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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[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);
bfcd3a46
JP		 84
85static LIST_HEAD(devlink_list);
86
87/* devlink_mutex
88 *
89 * An overall lock guarding every operation coming from userspace.
90 * It also guards devlink devices list and it is taken when
91 * driver registers/unregisters it.
92 */
93static DEFINE_MUTEX(devlink_mutex);
94
bfcd3a46
JP		 95static struct net *devlink_net(const struct devlink *devlink)
96{
97 return read_pnet(&devlink->_net);
98}
99
100static void devlink_net_set(struct devlink *devlink, struct net *net)
101{
102 write_pnet(&devlink->_net, net);
103}
104
105static struct devlink *devlink_get_from_attrs(struct net *net,
106 struct nlattr **attrs)
107{
108 struct devlink *devlink;
109 char *busname;
110 char *devname;
111
112 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
113 return ERR_PTR(-EINVAL);
114
115 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
116 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
117
118 list_for_each_entry(devlink, &devlink_list, list) {
119 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
120 strcmp(dev_name(devlink->dev), devname) == 0 &&
121 net_eq(devlink_net(devlink), net))
122 return devlink;
123 }
124
125 return ERR_PTR(-ENODEV);
126}
127
128static struct devlink *devlink_get_from_info(struct genl_info *info)
129{
130 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
131}
132
133static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
134 int port_index)
135{
136 struct devlink_port *devlink_port;
137
138 list_for_each_entry(devlink_port, &devlink->port_list, list) {
139 if (devlink_port->index == port_index)
140 return devlink_port;
141 }
142 return NULL;
143}
144
145static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
146{
147 return devlink_port_get_by_index(devlink, port_index);
148}
149
150static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
151 struct nlattr **attrs)
152{
153 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
154 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
155 struct devlink_port *devlink_port;
156
157 devlink_port = devlink_port_get_by_index(devlink, port_index);
158 if (!devlink_port)
159 return ERR_PTR(-ENODEV);
160 return devlink_port;
161 }
162 return ERR_PTR(-EINVAL);
163}
164
165static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
166 struct genl_info *info)
167{
168 return devlink_port_get_from_attrs(devlink, info->attrs);
169}
170
bf797471
JP		 171struct devlink_sb {
172 struct list_head list;
173 unsigned int index;
174 u32 size;
175 u16 ingress_pools_count;
176 u16 egress_pools_count;
177 u16 ingress_tc_count;
178 u16 egress_tc_count;
179};
180
181static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
182{
183 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
184}
185
186static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
187 unsigned int sb_index)
188{
189 struct devlink_sb *devlink_sb;
190
191 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
192 if (devlink_sb->index == sb_index)
193 return devlink_sb;
194 }
195 return NULL;
196}
197
198static bool devlink_sb_index_exists(struct devlink *devlink,
199 unsigned int sb_index)
200{
201 return devlink_sb_get_by_index(devlink, sb_index);
202}
203
204static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
205 struct nlattr **attrs)
206{
207 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
208 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
209 struct devlink_sb *devlink_sb;
210
211 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
212 if (!devlink_sb)
213 return ERR_PTR(-ENODEV);
214 return devlink_sb;
215 }
216 return ERR_PTR(-EINVAL);
217}
218
219static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
220 struct genl_info *info)
221{
222 return devlink_sb_get_from_attrs(devlink, info->attrs);
223}
224
225static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
226 struct nlattr **attrs,
227 u16 *p_pool_index)
228{
229 u16 val;
230
231 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
232 return -EINVAL;
233
234 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
235 if (val >= devlink_sb_pool_count(devlink_sb))
236 return -EINVAL;
237 *p_pool_index = val;
238 return 0;
239}
240
241static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
242 struct genl_info *info,
243 u16 *p_pool_index)
244{
245 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
246 p_pool_index);
247}
248
249static int
250devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
251 enum devlink_sb_pool_type *p_pool_type)
252{
253 u8 val;
254
255 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
256 return -EINVAL;
257
258 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
259 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
260 val != DEVLINK_SB_POOL_TYPE_EGRESS)
261 return -EINVAL;
262 *p_pool_type = val;
263 return 0;
264}
265
266static int
267devlink_sb_pool_type_get_from_info(struct genl_info *info,
268 enum devlink_sb_pool_type *p_pool_type)
269{
270 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
271}
272
273static int
274devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
275 enum devlink_sb_threshold_type *p_th_type)
276{
277 u8 val;
278
279 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
280 return -EINVAL;
281
282 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
283 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
284 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
285 return -EINVAL;
286 *p_th_type = val;
287 return 0;
288}
289
290static int
291devlink_sb_th_type_get_from_info(struct genl_info *info,
292 enum devlink_sb_threshold_type *p_th_type)
293{
294 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
295}
296
297static int
298devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
299 struct nlattr **attrs,
300 enum devlink_sb_pool_type pool_type,
301 u16 *p_tc_index)
302{
303 u16 val;
304
305 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
306 return -EINVAL;
307
308 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
309 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
310 val >= devlink_sb->ingress_tc_count)
311 return -EINVAL;
312 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
313 val >= devlink_sb->egress_tc_count)
314 return -EINVAL;
315 *p_tc_index = val;
316 return 0;
317}
318
319static int
320devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
321 struct genl_info *info,
322 enum devlink_sb_pool_type pool_type,
323 u16 *p_tc_index)
324{
325 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
326 pool_type, p_tc_index);
327}
328
b16ebe92
AV		 329struct devlink_region {
330 struct devlink *devlink;
331 struct list_head list;
332 const char *name;
333 struct list_head snapshot_list;
334 u32 max_snapshots;
335 u32 cur_snapshots;
336 u64 size;
337};
338
d7e52722
AV		 339struct devlink_snapshot {
340 struct list_head list;
341 struct devlink_region *region;
342 devlink_snapshot_data_dest_t *data_destructor;
343 u64 data_len;
344 u8 *data;
345 u32 id;
346};
347
b16ebe92
AV		 348static struct devlink_region *
349devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
350{
351 struct devlink_region *region;
352
353 list_for_each_entry(region, &devlink->region_list, list)
354 if (!strcmp(region->name, region_name))
355 return region;
356
357 return NULL;
358}
359
d7e52722
AV		 360static struct devlink_snapshot *
361devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
362{
363 struct devlink_snapshot *snapshot;
364
365 list_for_each_entry(snapshot, &region->snapshot_list, list)
366 if (snapshot->id == id)
367 return snapshot;
368
369 return NULL;
370}
371
372static void devlink_region_snapshot_del(struct devlink_snapshot *snapshot)
373{
374 snapshot->region->cur_snapshots--;
375 list_del(&snapshot->list);
376 (*snapshot->data_destructor)(snapshot->data);
377 kfree(snapshot);
378}
379
1fc2257e
JP		 380#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
381#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 382#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
2406e7e5
AS		 383
384/* The per devlink instance lock is taken by default in the pre-doit
385 * operation, yet several commands do not require this. The global
386 * devlink lock is taken and protects from disruption by user-calls.
387 */
388#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
bfcd3a46
JP		 389
390static int devlink_nl_pre_doit(const struct genl_ops *ops,
391 struct sk_buff *skb, struct genl_info *info)
392{
393 struct devlink *devlink;
2406e7e5 394 int err;
bfcd3a46
JP		 395
396 mutex_lock(&devlink_mutex);
397 devlink = devlink_get_from_info(info);
398 if (IS_ERR(devlink)) {
399 mutex_unlock(&devlink_mutex);
400 return PTR_ERR(devlink);
401 }
2406e7e5
AS		 402 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
403 mutex_lock(&devlink->lock);
1fc2257e
JP		 404 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
405 info->user_ptr[0] = devlink;
406 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 407 struct devlink_port *devlink_port;
408
bfcd3a46
JP		 409 devlink_port = devlink_port_get_from_info(devlink, info);
410 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 411 err = PTR_ERR(devlink_port);
412 goto unlock;
bfcd3a46 413 }
1fc2257e 414 info->user_ptr[0] = devlink_port;
bfcd3a46 415 }
bf797471
JP		 416 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
417 struct devlink_sb *devlink_sb;
418
419 devlink_sb = devlink_sb_get_from_info(devlink, info);
420 if (IS_ERR(devlink_sb)) {
2406e7e5
AS		 421 err = PTR_ERR(devlink_sb);
422 goto unlock;
bf797471
JP		 423 }
424 info->user_ptr[1] = devlink_sb;
425 }
bfcd3a46 426 return 0;
2406e7e5
AS		 427
428unlock:
429 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
430 mutex_unlock(&devlink->lock);
431 mutex_unlock(&devlink_mutex);
432 return err;
bfcd3a46
JP		 433}
434
435static void devlink_nl_post_doit(const struct genl_ops *ops,
436 struct sk_buff *skb, struct genl_info *info)
437{
2406e7e5
AS		 438 struct devlink *devlink;
439
440 devlink = devlink_get_from_info(info);
441 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
442 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 443 mutex_unlock(&devlink_mutex);
444}
445
489111e5 446static struct genl_family devlink_nl_family;
bfcd3a46
JP		 447
448enum devlink_multicast_groups {
449 DEVLINK_MCGRP_CONFIG,
450};
451
452static const struct genl_multicast_group devlink_nl_mcgrps[] = {
453 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
454};
455
456static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
457{
458 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
459 return -EMSGSIZE;
460 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
461 return -EMSGSIZE;
462 return 0;
463}
464
465static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
466 enum devlink_command cmd, u32 portid,
467 u32 seq, int flags)
468{
469 void *hdr;
470
471 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
472 if (!hdr)
473 return -EMSGSIZE;
474
475 if (devlink_nl_put_handle(msg, devlink))
476 goto nla_put_failure;
477
478 genlmsg_end(msg, hdr);
479 return 0;
480
481nla_put_failure:
482 genlmsg_cancel(msg, hdr);
483 return -EMSGSIZE;
484}
485
486static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
487{
488 struct sk_buff *msg;
489 int err;
490
491 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
492
493 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
494 if (!msg)
495 return;
496
497 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
498 if (err) {
499 nlmsg_free(msg);
500 return;
501 }
502
503 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
504 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
505}
506
b9ffcbaf
JP		 507static int devlink_nl_port_attrs_put(struct sk_buff *msg,
508 struct devlink_port *devlink_port)
509{
510 struct devlink_port_attrs *attrs = &devlink_port->attrs;
511
512 if (!attrs->set)
513 return 0;
5ec1380a
JP		 514 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
515 return -EMSGSIZE;
b9ffcbaf
JP		 516 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, attrs->port_number))
517 return -EMSGSIZE;
518 if (!attrs->split)
519 return 0;
520 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, attrs->port_number))
521 return -EMSGSIZE;
522 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
523 attrs->split_subport_number))
524 return -EMSGSIZE;
525 return 0;
526}
527
bfcd3a46
JP		 528static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
529 struct devlink_port *devlink_port,
530 enum devlink_command cmd, u32 portid,
531 u32 seq, int flags)
532{
533 void *hdr;
534
535 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
536 if (!hdr)
537 return -EMSGSIZE;
538
539 if (devlink_nl_put_handle(msg, devlink))
540 goto nla_put_failure;
541 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
542 goto nla_put_failure;
543 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
544 goto nla_put_failure;
545 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
546 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
547 devlink_port->desired_type))
548 goto nla_put_failure;
549 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
550 struct net_device *netdev = devlink_port->type_dev;
551
552 if (netdev &&
553 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
554 netdev->ifindex) ||
555 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
556 netdev->name)))
557 goto nla_put_failure;
558 }
559 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
560 struct ib_device *ibdev = devlink_port->type_dev;
561
562 if (ibdev &&
563 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
564 ibdev->name))
565 goto nla_put_failure;
566 }
b9ffcbaf 567 if (devlink_nl_port_attrs_put(msg, devlink_port))
bfcd3a46
JP		 568 goto nla_put_failure;
569
570 genlmsg_end(msg, hdr);
571 return 0;
572
573nla_put_failure:
574 genlmsg_cancel(msg, hdr);
575 return -EMSGSIZE;
576}
577
578static void devlink_port_notify(struct devlink_port *devlink_port,
579 enum devlink_command cmd)
580{
581 struct devlink *devlink = devlink_port->devlink;
582 struct sk_buff *msg;
583 int err;
584
585 if (!devlink_port->registered)
586 return;
587
588 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
589
590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
591 if (!msg)
592 return;
593
594 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
595 if (err) {
596 nlmsg_free(msg);
597 return;
598 }
599
600 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
601 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
602}
603
604static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
605{
606 struct devlink *devlink = info->user_ptr[0];
607 struct sk_buff *msg;
608 int err;
609
610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
611 if (!msg)
612 return -ENOMEM;
613
614 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
615 info->snd_portid, info->snd_seq, 0);
616 if (err) {
617 nlmsg_free(msg);
618 return err;
619 }
620
621 return genlmsg_reply(msg, info);
622}
623
624static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
625 struct netlink_callback *cb)
626{
627 struct devlink *devlink;
628 int start = cb->args[0];
629 int idx = 0;
630 int err;
631
632 mutex_lock(&devlink_mutex);
633 list_for_each_entry(devlink, &devlink_list, list) {
634 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
635 continue;
636 if (idx < start) {
637 idx++;
638 continue;
639 }
640 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
641 NETLINK_CB(cb->skb).portid,
642 cb->nlh->nlmsg_seq, NLM_F_MULTI);
643 if (err)
644 goto out;
645 idx++;
646 }
647out:
648 mutex_unlock(&devlink_mutex);
649
650 cb->args[0] = idx;
651 return msg->len;
652}
653
654static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
655 struct genl_info *info)
656{
1fc2257e
JP		 657 struct devlink_port *devlink_port = info->user_ptr[0];
658 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 659 struct sk_buff *msg;
660 int err;
661
662 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
663 if (!msg)
664 return -ENOMEM;
665
666 err = devlink_nl_port_fill(msg, devlink, devlink_port,
667 DEVLINK_CMD_PORT_NEW,
668 info->snd_portid, info->snd_seq, 0);
669 if (err) {
670 nlmsg_free(msg);
671 return err;
672 }
673
674 return genlmsg_reply(msg, info);
675}
676
677static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
678 struct netlink_callback *cb)
679{
680 struct devlink *devlink;
681 struct devlink_port *devlink_port;
682 int start = cb->args[0];
683 int idx = 0;
684 int err;
685
686 mutex_lock(&devlink_mutex);
bfcd3a46
JP		 687 list_for_each_entry(devlink, &devlink_list, list) {
688 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
689 continue;
2406e7e5 690 mutex_lock(&devlink->lock);
bfcd3a46
JP		 691 list_for_each_entry(devlink_port, &devlink->port_list, list) {
692 if (idx < start) {
693 idx++;
694 continue;
695 }
696 err = devlink_nl_port_fill(msg, devlink, devlink_port,
697 DEVLINK_CMD_NEW,
698 NETLINK_CB(cb->skb).portid,
699 cb->nlh->nlmsg_seq,
700 NLM_F_MULTI);
2406e7e5
AS		 701 if (err) {
702 mutex_unlock(&devlink->lock);
bfcd3a46 703 goto out;
2406e7e5 704 }
bfcd3a46
JP		 705 idx++;
706 }
2406e7e5 707 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 708 }
709out:
bfcd3a46
JP		 710 mutex_unlock(&devlink_mutex);
711
712 cb->args[0] = idx;
713 return msg->len;
714}
715
716static int devlink_port_type_set(struct devlink *devlink,
717 struct devlink_port *devlink_port,
718 enum devlink_port_type port_type)
719
720{
721 int err;
722
723 if (devlink->ops && devlink->ops->port_type_set) {
724 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
725 return -EINVAL;
6edf1017
ER		 726 if (port_type == devlink_port->type)
727 return 0;
bfcd3a46
JP		 728 err = devlink->ops->port_type_set(devlink_port, port_type);
729 if (err)
730 return err;
731 devlink_port->desired_type = port_type;
732 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
733 return 0;
734 }
735 return -EOPNOTSUPP;
736}
737
738static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
739 struct genl_info *info)
740{
1fc2257e
JP		 741 struct devlink_port *devlink_port = info->user_ptr[0];
742 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 743 int err;
744
745 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
746 enum devlink_port_type port_type;
747
748 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
749 err = devlink_port_type_set(devlink, devlink_port, port_type);
750 if (err)
751 return err;
752 }
753 return 0;
754}
755
ac0fc8a1
DA		 756static int devlink_port_split(struct devlink *devlink, u32 port_index,
757 u32 count, struct netlink_ext_ack *extack)
bfcd3a46
JP		 758
759{
760 if (devlink->ops && devlink->ops->port_split)
ac0fc8a1
DA		 761 return devlink->ops->port_split(devlink, port_index, count,
762 extack);
bfcd3a46
JP		 763 return -EOPNOTSUPP;
764}
765
766static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
767 struct genl_info *info)
768{
769 struct devlink *devlink = info->user_ptr[0];
770 u32 port_index;
771 u32 count;
772
773 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
774 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
775 return -EINVAL;
776
777 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
778 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
ac0fc8a1 779 return devlink_port_split(devlink, port_index, count, info->extack);
bfcd3a46
JP		 780}
781
ac0fc8a1
DA		 782static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
783 struct netlink_ext_ack *extack)
bfcd3a46
JP		 784
785{
786 if (devlink->ops && devlink->ops->port_unsplit)
ac0fc8a1 787 return devlink->ops->port_unsplit(devlink, port_index, extack);
bfcd3a46
JP		 788 return -EOPNOTSUPP;
789}
790
791static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
792 struct genl_info *info)
793{
794 struct devlink *devlink = info->user_ptr[0];
795 u32 port_index;
796
797 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
798 return -EINVAL;
799
800 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
ac0fc8a1 801 return devlink_port_unsplit(devlink, port_index, info->extack);
bfcd3a46
JP		 802}
803
bf797471
JP		 804static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
805 struct devlink_sb *devlink_sb,
806 enum devlink_command cmd, u32 portid,
807 u32 seq, int flags)
808{
809 void *hdr;
810
811 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
812 if (!hdr)
813 return -EMSGSIZE;
814
815 if (devlink_nl_put_handle(msg, devlink))
816 goto nla_put_failure;
817 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
818 goto nla_put_failure;
819 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
820 goto nla_put_failure;
821 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
822 devlink_sb->ingress_pools_count))
823 goto nla_put_failure;
824 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
825 devlink_sb->egress_pools_count))
826 goto nla_put_failure;
827 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
828 devlink_sb->ingress_tc_count))
829 goto nla_put_failure;
830 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
831 devlink_sb->egress_tc_count))
832 goto nla_put_failure;
833
834 genlmsg_end(msg, hdr);
835 return 0;
836
837nla_put_failure:
838 genlmsg_cancel(msg, hdr);
839 return -EMSGSIZE;
840}
841
842static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
843 struct genl_info *info)
844{
845 struct devlink *devlink = info->user_ptr[0];
846 struct devlink_sb *devlink_sb = info->user_ptr[1];
847 struct sk_buff *msg;
848 int err;
849
850 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
851 if (!msg)
852 return -ENOMEM;
853
854 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
855 DEVLINK_CMD_SB_NEW,
856 info->snd_portid, info->snd_seq, 0);
857 if (err) {
858 nlmsg_free(msg);
859 return err;
860 }
861
862 return genlmsg_reply(msg, info);
863}
864
865static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
866 struct netlink_callback *cb)
867{
868 struct devlink *devlink;
869 struct devlink_sb *devlink_sb;
870 int start = cb->args[0];
871 int idx = 0;
872 int err;
873
874 mutex_lock(&devlink_mutex);
875 list_for_each_entry(devlink, &devlink_list, list) {
876 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
877 continue;
2406e7e5 878 mutex_lock(&devlink->lock);
bf797471
JP		 879 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
880 if (idx < start) {
881 idx++;
882 continue;
883 }
884 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
885 DEVLINK_CMD_SB_NEW,
886 NETLINK_CB(cb->skb).portid,
887 cb->nlh->nlmsg_seq,
888 NLM_F_MULTI);
2406e7e5
AS		 889 if (err) {
890 mutex_unlock(&devlink->lock);
bf797471 891 goto out;
2406e7e5 892 }
bf797471
JP		 893 idx++;
894 }
2406e7e5 895 mutex_unlock(&devlink->lock);
bf797471
JP		 896 }
897out:
898 mutex_unlock(&devlink_mutex);
899
900 cb->args[0] = idx;
901 return msg->len;
902}
903
904static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
905 struct devlink_sb *devlink_sb,
906 u16 pool_index, enum devlink_command cmd,
907 u32 portid, u32 seq, int flags)
908{
909 struct devlink_sb_pool_info pool_info;
910 void *hdr;
911 int err;
912
913 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
914 pool_index, &pool_info);
915 if (err)
916 return err;
917
918 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
919 if (!hdr)
920 return -EMSGSIZE;
921
922 if (devlink_nl_put_handle(msg, devlink))
923 goto nla_put_failure;
924 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
925 goto nla_put_failure;
926 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
927 goto nla_put_failure;
928 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
929 goto nla_put_failure;
930 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
931 goto nla_put_failure;
932 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
933 pool_info.threshold_type))
934 goto nla_put_failure;
935
936 genlmsg_end(msg, hdr);
937 return 0;
938
939nla_put_failure:
940 genlmsg_cancel(msg, hdr);
941 return -EMSGSIZE;
942}
943
944static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
945 struct genl_info *info)
946{
947 struct devlink *devlink = info->user_ptr[0];
948 struct devlink_sb *devlink_sb = info->user_ptr[1];
949 struct sk_buff *msg;
950 u16 pool_index;
951 int err;
952
953 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
954 &pool_index);
955 if (err)
956 return err;
957
958 if (!devlink->ops || !devlink->ops->sb_pool_get)
959 return -EOPNOTSUPP;
960
961 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
962 if (!msg)
963 return -ENOMEM;
964
965 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
966 DEVLINK_CMD_SB_POOL_NEW,
967 info->snd_portid, info->snd_seq, 0);
968 if (err) {
969 nlmsg_free(msg);
970 return err;
971 }
972
973 return genlmsg_reply(msg, info);
974}
975
976static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
977 struct devlink *devlink,
978 struct devlink_sb *devlink_sb,
979 u32 portid, u32 seq)
980{
981 u16 pool_count = devlink_sb_pool_count(devlink_sb);
982 u16 pool_index;
983 int err;
984
985 for (pool_index = 0; pool_index < pool_count; pool_index++) {
986 if (*p_idx < start) {
987 (*p_idx)++;
988 continue;
989 }
990 err = devlink_nl_sb_pool_fill(msg, devlink,
991 devlink_sb,
992 pool_index,
993 DEVLINK_CMD_SB_POOL_NEW,
994 portid, seq, NLM_F_MULTI);
995 if (err)
996 return err;
997 (*p_idx)++;
998 }
999 return 0;
1000}
1001
1002static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1003 struct netlink_callback *cb)
1004{
1005 struct devlink *devlink;
1006 struct devlink_sb *devlink_sb;
1007 int start = cb->args[0];
1008 int idx = 0;
1009 int err;
1010
1011 mutex_lock(&devlink_mutex);
1012 list_for_each_entry(devlink, &devlink_list, list) {
1013 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1014 !devlink->ops || !devlink->ops->sb_pool_get)
1015 continue;
2406e7e5 1016 mutex_lock(&devlink->lock);
bf797471
JP		 1017 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1018 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1019 devlink_sb,
1020 NETLINK_CB(cb->skb).portid,
1021 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1022 if (err && err != -EOPNOTSUPP) {
1023 mutex_unlock(&devlink->lock);
bf797471 1024 goto out;
2406e7e5 1025 }
bf797471 1026 }
2406e7e5 1027 mutex_unlock(&devlink->lock);
bf797471
JP		 1028 }
1029out:
1030 mutex_unlock(&devlink_mutex);
1031
1032 cb->args[0] = idx;
1033 return msg->len;
1034}
1035
1036static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1037 u16 pool_index, u32 size,
1038 enum devlink_sb_threshold_type threshold_type)
1039
1040{
1041 const struct devlink_ops *ops = devlink->ops;
1042
1043 if (ops && ops->sb_pool_set)
1044 return ops->sb_pool_set(devlink, sb_index, pool_index,
1045 size, threshold_type);
1046 return -EOPNOTSUPP;
1047}
1048
1049static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1050 struct genl_info *info)
1051{
1052 struct devlink *devlink = info->user_ptr[0];
1053 struct devlink_sb *devlink_sb = info->user_ptr[1];
1054 enum devlink_sb_threshold_type threshold_type;
1055 u16 pool_index;
1056 u32 size;
1057 int err;
1058
1059 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1060 &pool_index);
1061 if (err)
1062 return err;
1063
1064 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1065 if (err)
1066 return err;
1067
1068 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1069 return -EINVAL;
1070
1071 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1072 return devlink_sb_pool_set(devlink, devlink_sb->index,
1073 pool_index, size, threshold_type);
1074}
1075
1076static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1077 struct devlink *devlink,
1078 struct devlink_port *devlink_port,
1079 struct devlink_sb *devlink_sb,
1080 u16 pool_index,
1081 enum devlink_command cmd,
1082 u32 portid, u32 seq, int flags)
1083{
df38dafd 1084 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1085 u32 threshold;
1086 void *hdr;
1087 int err;
1088
df38dafd
JP		 1089 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1090 pool_index, &threshold);
bf797471
JP		 1091 if (err)
1092 return err;
1093
1094 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1095 if (!hdr)
1096 return -EMSGSIZE;
1097
1098 if (devlink_nl_put_handle(msg, devlink))
1099 goto nla_put_failure;
1100 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1101 goto nla_put_failure;
1102 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1103 goto nla_put_failure;
1104 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1105 goto nla_put_failure;
1106 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1107 goto nla_put_failure;
1108
df38dafd
JP		 1109 if (ops->sb_occ_port_pool_get) {
1110 u32 cur;
1111 u32 max;
1112
1113 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1114 pool_index, &cur, &max);
1115 if (err && err != -EOPNOTSUPP)
1116 return err;
1117 if (!err) {
1118 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1119 goto nla_put_failure;
1120 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1121 goto nla_put_failure;
1122 }
1123 }
1124
bf797471
JP		 1125 genlmsg_end(msg, hdr);
1126 return 0;
1127
1128nla_put_failure:
1129 genlmsg_cancel(msg, hdr);
1130 return -EMSGSIZE;
1131}
1132
1133static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1134 struct genl_info *info)
1135{
1136 struct devlink_port *devlink_port = info->user_ptr[0];
1137 struct devlink *devlink = devlink_port->devlink;
1138 struct devlink_sb *devlink_sb = info->user_ptr[1];
1139 struct sk_buff *msg;
1140 u16 pool_index;
1141 int err;
1142
1143 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1144 &pool_index);
1145 if (err)
1146 return err;
1147
1148 if (!devlink->ops || !devlink->ops->sb_port_pool_get)
1149 return -EOPNOTSUPP;
1150
1151 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1152 if (!msg)
1153 return -ENOMEM;
1154
1155 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1156 devlink_sb, pool_index,
1157 DEVLINK_CMD_SB_PORT_POOL_NEW,
1158 info->snd_portid, info->snd_seq, 0);
1159 if (err) {
1160 nlmsg_free(msg);
1161 return err;
1162 }
1163
1164 return genlmsg_reply(msg, info);
1165}
1166
1167static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1168 struct devlink *devlink,
1169 struct devlink_sb *devlink_sb,
1170 u32 portid, u32 seq)
1171{
1172 struct devlink_port *devlink_port;
1173 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1174 u16 pool_index;
1175 int err;
1176
1177 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1178 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1179 if (*p_idx < start) {
1180 (*p_idx)++;
1181 continue;
1182 }
1183 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1184 devlink_port,
1185 devlink_sb,
1186 pool_index,
1187 DEVLINK_CMD_SB_PORT_POOL_NEW,
1188 portid, seq,
1189 NLM_F_MULTI);
1190 if (err)
1191 return err;
1192 (*p_idx)++;
1193 }
1194 }
1195 return 0;
1196}
1197
1198static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1199 struct netlink_callback *cb)
1200{
1201 struct devlink *devlink;
1202 struct devlink_sb *devlink_sb;
1203 int start = cb->args[0];
1204 int idx = 0;
1205 int err;
1206
1207 mutex_lock(&devlink_mutex);
bf797471
JP		 1208 list_for_each_entry(devlink, &devlink_list, list) {
1209 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1210 !devlink->ops || !devlink->ops->sb_port_pool_get)
1211 continue;
2406e7e5 1212 mutex_lock(&devlink->lock);
bf797471
JP		 1213 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1214 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1215 devlink, devlink_sb,
1216 NETLINK_CB(cb->skb).portid,
1217 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1218 if (err && err != -EOPNOTSUPP) {
1219 mutex_unlock(&devlink->lock);
bf797471 1220 goto out;
2406e7e5 1221 }
bf797471 1222 }
2406e7e5 1223 mutex_unlock(&devlink->lock);
bf797471
JP		 1224 }
1225out:
bf797471
JP		 1226 mutex_unlock(&devlink_mutex);
1227
1228 cb->args[0] = idx;
1229 return msg->len;
1230}
1231
1232static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1233 unsigned int sb_index, u16 pool_index,
1234 u32 threshold)
1235
1236{
1237 const struct devlink_ops *ops = devlink_port->devlink->ops;
1238
1239 if (ops && ops->sb_port_pool_set)
1240 return ops->sb_port_pool_set(devlink_port, sb_index,
1241 pool_index, threshold);
1242 return -EOPNOTSUPP;
1243}
1244
1245static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1246 struct genl_info *info)
1247{
1248 struct devlink_port *devlink_port = info->user_ptr[0];
1249 struct devlink_sb *devlink_sb = info->user_ptr[1];
1250 u16 pool_index;
1251 u32 threshold;
1252 int err;
1253
1254 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1255 &pool_index);
1256 if (err)
1257 return err;
1258
1259 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1260 return -EINVAL;
1261
1262 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1263 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1264 pool_index, threshold);
1265}
1266
1267static int
1268devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1269 struct devlink_port *devlink_port,
1270 struct devlink_sb *devlink_sb, u16 tc_index,
1271 enum devlink_sb_pool_type pool_type,
1272 enum devlink_command cmd,
1273 u32 portid, u32 seq, int flags)
1274{
df38dafd 1275 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1276 u16 pool_index;
1277 u32 threshold;
1278 void *hdr;
1279 int err;
1280
df38dafd
JP		 1281 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1282 tc_index, pool_type,
1283 &pool_index, &threshold);
bf797471
JP		 1284 if (err)
1285 return err;
1286
1287 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1288 if (!hdr)
1289 return -EMSGSIZE;
1290
1291 if (devlink_nl_put_handle(msg, devlink))
1292 goto nla_put_failure;
1293 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1294 goto nla_put_failure;
1295 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1296 goto nla_put_failure;
1297 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1298 goto nla_put_failure;
1299 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1300 goto nla_put_failure;
1301 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1302 goto nla_put_failure;
1303 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1304 goto nla_put_failure;
1305
df38dafd
JP		 1306 if (ops->sb_occ_tc_port_bind_get) {
1307 u32 cur;
1308 u32 max;
1309
1310 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1311 devlink_sb->index,
1312 tc_index, pool_type,
1313 &cur, &max);
1314 if (err && err != -EOPNOTSUPP)
1315 return err;
1316 if (!err) {
1317 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1318 goto nla_put_failure;
1319 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1320 goto nla_put_failure;
1321 }
1322 }
1323
bf797471
JP		 1324 genlmsg_end(msg, hdr);
1325 return 0;
1326
1327nla_put_failure:
1328 genlmsg_cancel(msg, hdr);
1329 return -EMSGSIZE;
1330}
1331
1332static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1333 struct genl_info *info)
1334{
1335 struct devlink_port *devlink_port = info->user_ptr[0];
1336 struct devlink *devlink = devlink_port->devlink;
1337 struct devlink_sb *devlink_sb = info->user_ptr[1];
1338 struct sk_buff *msg;
1339 enum devlink_sb_pool_type pool_type;
1340 u16 tc_index;
1341 int err;
1342
1343 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1344 if (err)
1345 return err;
1346
1347 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1348 pool_type, &tc_index);
1349 if (err)
1350 return err;
1351
1352 if (!devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
1353 return -EOPNOTSUPP;
1354
1355 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1356 if (!msg)
1357 return -ENOMEM;
1358
1359 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1360 devlink_sb, tc_index, pool_type,
1361 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1362 info->snd_portid,
1363 info->snd_seq, 0);
1364 if (err) {
1365 nlmsg_free(msg);
1366 return err;
1367 }
1368
1369 return genlmsg_reply(msg, info);
1370}
1371
1372static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1373 int start, int *p_idx,
1374 struct devlink *devlink,
1375 struct devlink_sb *devlink_sb,
1376 u32 portid, u32 seq)
1377{
1378 struct devlink_port *devlink_port;
1379 u16 tc_index;
1380 int err;
1381
1382 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1383 for (tc_index = 0;
1384 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1385 if (*p_idx < start) {
1386 (*p_idx)++;
1387 continue;
1388 }
1389 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1390 devlink_port,
1391 devlink_sb,
1392 tc_index,
1393 DEVLINK_SB_POOL_TYPE_INGRESS,
1394 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1395 portid, seq,
1396 NLM_F_MULTI);
1397 if (err)
1398 return err;
1399 (*p_idx)++;
1400 }
1401 for (tc_index = 0;
1402 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1403 if (*p_idx < start) {
1404 (*p_idx)++;
1405 continue;
1406 }
1407 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1408 devlink_port,
1409 devlink_sb,
1410 tc_index,
1411 DEVLINK_SB_POOL_TYPE_EGRESS,
1412 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1413 portid, seq,
1414 NLM_F_MULTI);
1415 if (err)
1416 return err;
1417 (*p_idx)++;
1418 }
1419 }
1420 return 0;
1421}
1422
1423static int
1424devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1425 struct netlink_callback *cb)
1426{
1427 struct devlink *devlink;
1428 struct devlink_sb *devlink_sb;
1429 int start = cb->args[0];
1430 int idx = 0;
1431 int err;
1432
1433 mutex_lock(&devlink_mutex);
bf797471
JP		 1434 list_for_each_entry(devlink, &devlink_list, list) {
1435 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1436 !devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
1437 continue;
2406e7e5
AS		 1438
1439 mutex_lock(&devlink->lock);
bf797471
JP		 1440 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1441 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1442 devlink,
1443 devlink_sb,
1444 NETLINK_CB(cb->skb).portid,
1445 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1446 if (err && err != -EOPNOTSUPP) {
1447 mutex_unlock(&devlink->lock);
bf797471 1448 goto out;
2406e7e5 1449 }
bf797471 1450 }
2406e7e5 1451 mutex_unlock(&devlink->lock);
bf797471
JP		 1452 }
1453out:
bf797471
JP		 1454 mutex_unlock(&devlink_mutex);
1455
1456 cb->args[0] = idx;
1457 return msg->len;
1458}
1459
1460static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1461 unsigned int sb_index, u16 tc_index,
1462 enum devlink_sb_pool_type pool_type,
1463 u16 pool_index, u32 threshold)
1464
1465{
1466 const struct devlink_ops *ops = devlink_port->devlink->ops;
1467
1468 if (ops && ops->sb_tc_pool_bind_set)
1469 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1470 tc_index, pool_type,
1471 pool_index, threshold);
1472 return -EOPNOTSUPP;
1473}
1474
1475static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1476 struct genl_info *info)
1477{
1478 struct devlink_port *devlink_port = info->user_ptr[0];
1479 struct devlink_sb *devlink_sb = info->user_ptr[1];
1480 enum devlink_sb_pool_type pool_type;
1481 u16 tc_index;
1482 u16 pool_index;
1483 u32 threshold;
1484 int err;
1485
1486 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1487 if (err)
1488 return err;
1489
1490 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1491 pool_type, &tc_index);
1492 if (err)
1493 return err;
1494
1495 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1496 &pool_index);
1497 if (err)
1498 return err;
1499
1500 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1501 return -EINVAL;
1502
1503 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1504 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1505 tc_index, pool_type,
1506 pool_index, threshold);
1507}
1508
df38dafd
JP		 1509static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1510 struct genl_info *info)
1511{
1512 struct devlink *devlink = info->user_ptr[0];
1513 struct devlink_sb *devlink_sb = info->user_ptr[1];
1514 const struct devlink_ops *ops = devlink->ops;
1515
1516 if (ops && ops->sb_occ_snapshot)
1517 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1518 return -EOPNOTSUPP;
1519}
1520
1521static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1522 struct genl_info *info)
1523{
1524 struct devlink *devlink = info->user_ptr[0];
1525 struct devlink_sb *devlink_sb = info->user_ptr[1];
1526 const struct devlink_ops *ops = devlink->ops;
1527
1528 if (ops && ops->sb_occ_max_clear)
1529 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1530 return -EOPNOTSUPP;
1531}
1532
21e3d2dd
JP		 1533static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1534 enum devlink_command cmd, u32 portid,
1535 u32 seq, int flags)
08f4b591 1536{
59bfde01 1537 const struct devlink_ops *ops = devlink->ops;
f43e9b06 1538 u8 inline_mode, encap_mode;
08f4b591 1539 void *hdr;
59bfde01
RD		 1540 int err = 0;
1541 u16 mode;
08f4b591
OG		 1542
1543 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1544 if (!hdr)
1545 return -EMSGSIZE;
1546
59bfde01
RD		 1547 err = devlink_nl_put_handle(msg, devlink);
1548 if (err)
1a6aa36b 1549 goto nla_put_failure;
08f4b591 1550
4456f61c
JP		 1551 if (ops->eswitch_mode_get) {
1552 err = ops->eswitch_mode_get(devlink, &mode);
1553 if (err)
1554 goto nla_put_failure;
1555 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1556 if (err)
1557 goto nla_put_failure;
1558 }
59bfde01
RD		 1559
1560 if (ops->eswitch_inline_mode_get) {
1561 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1562 if (err)
1a6aa36b 1563 goto nla_put_failure;
59bfde01
RD		 1564 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1565 inline_mode);
1566 if (err)
1a6aa36b 1567 goto nla_put_failure;
59bfde01 1568 }
08f4b591 1569
f43e9b06
RD		 1570 if (ops->eswitch_encap_mode_get) {
1571 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1572 if (err)
1573 goto nla_put_failure;
1574 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1575 if (err)
1576 goto nla_put_failure;
1577 }
1578
08f4b591
OG		 1579 genlmsg_end(msg, hdr);
1580 return 0;
1581
1a6aa36b 1582nla_put_failure:
08f4b591 1583 genlmsg_cancel(msg, hdr);
59bfde01 1584 return err;
08f4b591
OG		 1585}
1586
adf200f3
JP		 1587static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1588 struct genl_info *info)
08f4b591
OG		 1589{
1590 struct devlink *devlink = info->user_ptr[0];
1591 const struct devlink_ops *ops = devlink->ops;
1592 struct sk_buff *msg;
08f4b591
OG		 1593 int err;
1594
4456f61c 1595 if (!ops)
08f4b591
OG		 1596 return -EOPNOTSUPP;
1597
08f4b591
OG		 1598 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1599 if (!msg)
1600 return -ENOMEM;
1601
21e3d2dd
JP		 1602 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1603 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 1604
1605 if (err) {
1606 nlmsg_free(msg);
1607 return err;
1608 }
1609
1610 return genlmsg_reply(msg, info);
1611}
1612
adf200f3
JP		 1613static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1614 struct genl_info *info)
08f4b591
OG		 1615{
1616 struct devlink *devlink = info->user_ptr[0];
1617 const struct devlink_ops *ops = devlink->ops;
f43e9b06 1618 u8 inline_mode, encap_mode;
59bfde01 1619 int err = 0;
f43e9b06 1620 u16 mode;
08f4b591 1621
59bfde01
RD		 1622 if (!ops)
1623 return -EOPNOTSUPP;
08f4b591 1624
59bfde01
RD		 1625 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1626 if (!ops->eswitch_mode_set)
1627 return -EOPNOTSUPP;
1628 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
1629 err = ops->eswitch_mode_set(devlink, mode);
1630 if (err)
1631 return err;
1632 }
08f4b591 1633
59bfde01
RD		 1634 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1635 if (!ops->eswitch_inline_mode_set)
1636 return -EOPNOTSUPP;
1637 inline_mode = nla_get_u8(
1638 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
1639 err = ops->eswitch_inline_mode_set(devlink, inline_mode);
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]);
1648 err = ops->eswitch_encap_mode_set(devlink, encap_mode);
1649 if (err)
1650 return err;
1651 }
1652
1555d204
AS		 1653 return 0;
1654}
1655
1656int devlink_dpipe_match_put(struct sk_buff *skb,
1657 struct devlink_dpipe_match *match)
1658{
1659 struct devlink_dpipe_header *header = match->header;
1660 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1661 struct nlattr *match_attr;
1662
1663 match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
1664 if (!match_attr)
1665 return -EMSGSIZE;
1666
1667 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1668 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1669 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1670 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1671 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1672 goto nla_put_failure;
1673
1674 nla_nest_end(skb, match_attr);
1675 return 0;
1676
1677nla_put_failure:
1678 nla_nest_cancel(skb, match_attr);
1679 return -EMSGSIZE;
1680}
1681EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1682
1683static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1684 struct sk_buff *skb)
1685{
1686 struct nlattr *matches_attr;
1687
1688 matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1689 if (!matches_attr)
1690 return -EMSGSIZE;
1691
1692 if (table->table_ops->matches_dump(table->priv, skb))
1693 goto nla_put_failure;
1694
1695 nla_nest_end(skb, matches_attr);
1696 return 0;
1697
1698nla_put_failure:
1699 nla_nest_cancel(skb, matches_attr);
1700 return -EMSGSIZE;
1701}
1702
1703int devlink_dpipe_action_put(struct sk_buff *skb,
1704 struct devlink_dpipe_action *action)
1705{
1706 struct devlink_dpipe_header *header = action->header;
1707 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1708 struct nlattr *action_attr;
1709
1710 action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
1711 if (!action_attr)
1712 return -EMSGSIZE;
1713
1714 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1715 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1716 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1717 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1718 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1719 goto nla_put_failure;
1720
1721 nla_nest_end(skb, action_attr);
1722 return 0;
1723
1724nla_put_failure:
1725 nla_nest_cancel(skb, action_attr);
1726 return -EMSGSIZE;
1727}
1728EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1729
1730static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1731 struct sk_buff *skb)
1732{
1733 struct nlattr *actions_attr;
1734
1735 actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1736 if (!actions_attr)
1737 return -EMSGSIZE;
1738
1739 if (table->table_ops->actions_dump(table->priv, skb))
1740 goto nla_put_failure;
1741
1742 nla_nest_end(skb, actions_attr);
1743 return 0;
1744
1745nla_put_failure:
1746 nla_nest_cancel(skb, actions_attr);
1747 return -EMSGSIZE;
1748}
1749
1750static int devlink_dpipe_table_put(struct sk_buff *skb,
1751 struct devlink_dpipe_table *table)
1752{
1753 struct nlattr *table_attr;
ffd3cdcc 1754 u64 table_size;
1555d204 1755
ffd3cdcc 1756 table_size = table->table_ops->size_get(table->priv);
1555d204
AS		 1757 table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
1758 if (!table_attr)
1759 return -EMSGSIZE;
1760
1761 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 1762 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 1763 DEVLINK_ATTR_PAD))
1764 goto nla_put_failure;
1765 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1766 table->counters_enabled))
1767 goto nla_put_failure;
1768
56dc7cd0 1769 if (table->resource_valid) {
3d18e4f1
AS		 1770 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1771 table->resource_id, DEVLINK_ATTR_PAD) ||
1772 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1773 table->resource_units, DEVLINK_ATTR_PAD))
1774 goto nla_put_failure;
56dc7cd0 1775 }
1555d204
AS		 1776 if (devlink_dpipe_matches_put(table, skb))
1777 goto nla_put_failure;
1778
1779 if (devlink_dpipe_actions_put(table, skb))
1780 goto nla_put_failure;
1781
1782 nla_nest_end(skb, table_attr);
1783 return 0;
1784
1785nla_put_failure:
1786 nla_nest_cancel(skb, table_attr);
1787 return -EMSGSIZE;
1788}
1789
1790static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1791 struct genl_info *info)
1792{
1793 int err;
1794
1795 if (*pskb) {
1796 err = genlmsg_reply(*pskb, info);
1797 if (err)
1798 return err;
1799 }
1800 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1801 if (!*pskb)
1802 return -ENOMEM;
1803 return 0;
1804}
1805
1806static int devlink_dpipe_tables_fill(struct genl_info *info,
1807 enum devlink_command cmd, int flags,
1808 struct list_head *dpipe_tables,
1809 const char *table_name)
1810{
1811 struct devlink *devlink = info->user_ptr[0];
1812 struct devlink_dpipe_table *table;
1813 struct nlattr *tables_attr;
1814 struct sk_buff *skb = NULL;
1815 struct nlmsghdr *nlh;
1816 bool incomplete;
1817 void *hdr;
1818 int i;
1819 int err;
1820
1821 table = list_first_entry(dpipe_tables,
1822 struct devlink_dpipe_table, list);
1823start_again:
1824 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1825 if (err)
1826 return err;
1827
1828 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1829 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 1830 if (!hdr) {
1831 nlmsg_free(skb);
1555d204 1832 return -EMSGSIZE;
6044bd4a 1833 }
1555d204
AS		 1834
1835 if (devlink_nl_put_handle(skb, devlink))
1836 goto nla_put_failure;
1837 tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
1838 if (!tables_attr)
1839 goto nla_put_failure;
1840
1841 i = 0;
1842 incomplete = false;
1843 list_for_each_entry_from(table, dpipe_tables, list) {
1844 if (!table_name) {
1845 err = devlink_dpipe_table_put(skb, table);
1846 if (err) {
1847 if (!i)
1848 goto err_table_put;
1849 incomplete = true;
1850 break;
1851 }
1852 } else {
1853 if (!strcmp(table->name, table_name)) {
1854 err = devlink_dpipe_table_put(skb, table);
1855 if (err)
1856 break;
1857 }
1858 }
1859 i++;
1860 }
1861
1862 nla_nest_end(skb, tables_attr);
1863 genlmsg_end(skb, hdr);
1864 if (incomplete)
1865 goto start_again;
1866
1867send_done:
1868 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1869 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1870 if (!nlh) {
1871 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1872 if (err)
7fe4d6dc 1873 return err;
1555d204
AS		 1874 goto send_done;
1875 }
1876
1877 return genlmsg_reply(skb, info);
1878
1879nla_put_failure:
1880 err = -EMSGSIZE;
1881err_table_put:
1555d204
AS		 1882 nlmsg_free(skb);
1883 return err;
1884}
1885
1886static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1887 struct genl_info *info)
1888{
1889 struct devlink *devlink = info->user_ptr[0];
1890 const char *table_name = NULL;
1891
1892 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1893 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1894
1895 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1896 &devlink->dpipe_table_list,
1897 table_name);
1898}
1899
1900static int devlink_dpipe_value_put(struct sk_buff *skb,
1901 struct devlink_dpipe_value *value)
1902{
1903 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1904 value->value_size, value->value))
1905 return -EMSGSIZE;
1906 if (value->mask)
1907 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1908 value->value_size, value->mask))
1909 return -EMSGSIZE;
1910 if (value->mapping_valid)
1911 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1912 value->mapping_value))
1913 return -EMSGSIZE;
1914 return 0;
1915}
1916
1917static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1918 struct devlink_dpipe_value *value)
1919{
1920 if (!value->action)
1921 return -EINVAL;
1922 if (devlink_dpipe_action_put(skb, value->action))
1923 return -EMSGSIZE;
1924 if (devlink_dpipe_value_put(skb, value))
1925 return -EMSGSIZE;
1926 return 0;
1927}
1928
1929static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1930 struct devlink_dpipe_value *values,
1931 unsigned int values_count)
1932{
1933 struct nlattr *action_attr;
1934 int i;
1935 int err;
1936
1937 for (i = 0; i < values_count; i++) {
1938 action_attr = nla_nest_start(skb,
1939 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1940 if (!action_attr)
1941 return -EMSGSIZE;
1942 err = devlink_dpipe_action_value_put(skb, &values[i]);
1943 if (err)
1944 goto err_action_value_put;
1945 nla_nest_end(skb, action_attr);
1946 }
1947 return 0;
1948
1949err_action_value_put:
1950 nla_nest_cancel(skb, action_attr);
1951 return err;
1952}
1953
1954static int devlink_dpipe_match_value_put(struct sk_buff *skb,
1955 struct devlink_dpipe_value *value)
1956{
1957 if (!value->match)
1958 return -EINVAL;
1959 if (devlink_dpipe_match_put(skb, value->match))
1960 return -EMSGSIZE;
1961 if (devlink_dpipe_value_put(skb, value))
1962 return -EMSGSIZE;
1963 return 0;
1964}
1965
1966static int devlink_dpipe_match_values_put(struct sk_buff *skb,
1967 struct devlink_dpipe_value *values,
1968 unsigned int values_count)
1969{
1970 struct nlattr *match_attr;
1971 int i;
1972 int err;
1973
1974 for (i = 0; i < values_count; i++) {
1975 match_attr = nla_nest_start(skb,
1976 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1977 if (!match_attr)
1978 return -EMSGSIZE;
1979 err = devlink_dpipe_match_value_put(skb, &values[i]);
1980 if (err)
1981 goto err_match_value_put;
1982 nla_nest_end(skb, match_attr);
1983 }
1984 return 0;
1985
1986err_match_value_put:
1987 nla_nest_cancel(skb, match_attr);
1988 return err;
1989}
1990
1991static int devlink_dpipe_entry_put(struct sk_buff *skb,
1992 struct devlink_dpipe_entry *entry)
1993{
1994 struct nlattr *entry_attr, *matches_attr, *actions_attr;
1995 int err;
1996
1997 entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1998 if (!entry_attr)
1999 return -EMSGSIZE;
2000
2001 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2002 DEVLINK_ATTR_PAD))
2003 goto nla_put_failure;
2004 if (entry->counter_valid)
2005 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2006 entry->counter, DEVLINK_ATTR_PAD))
2007 goto nla_put_failure;
2008
2009 matches_attr = nla_nest_start(skb,
2010 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2011 if (!matches_attr)
2012 goto nla_put_failure;
2013
2014 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2015 entry->match_values_count);
2016 if (err) {
2017 nla_nest_cancel(skb, matches_attr);
2018 goto err_match_values_put;
2019 }
2020 nla_nest_end(skb, matches_attr);
2021
2022 actions_attr = nla_nest_start(skb,
2023 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2024 if (!actions_attr)
2025 goto nla_put_failure;
2026
2027 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2028 entry->action_values_count);
2029 if (err) {
2030 nla_nest_cancel(skb, actions_attr);
2031 goto err_action_values_put;
2032 }
2033 nla_nest_end(skb, actions_attr);
59bfde01 2034
1555d204 2035 nla_nest_end(skb, entry_attr);
59bfde01 2036 return 0;
1555d204
AS		 2037
2038nla_put_failure:
2039 err = -EMSGSIZE;
2040err_match_values_put:
2041err_action_values_put:
2042 nla_nest_cancel(skb, entry_attr);
2043 return err;
2044}
2045
2046static struct devlink_dpipe_table *
2047devlink_dpipe_table_find(struct list_head *dpipe_tables,
2048 const char *table_name)
2049{
2050 struct devlink_dpipe_table *table;
2051
2052 list_for_each_entry_rcu(table, dpipe_tables, list) {
2053 if (!strcmp(table->name, table_name))
2054 return table;
2055 }
2056 return NULL;
2057}
2058
2059int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2060{
2061 struct devlink *devlink;
2062 int err;
2063
2064 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2065 dump_ctx->info);
2066 if (err)
2067 return err;
2068
2069 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2070 dump_ctx->info->snd_portid,
2071 dump_ctx->info->snd_seq,
2072 &devlink_nl_family, NLM_F_MULTI,
2073 dump_ctx->cmd);
2074 if (!dump_ctx->hdr)
2075 goto nla_put_failure;
2076
2077 devlink = dump_ctx->info->user_ptr[0];
2078 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2079 goto nla_put_failure;
2080 dump_ctx->nest = nla_nest_start(dump_ctx->skb,
2081 DEVLINK_ATTR_DPIPE_ENTRIES);
2082 if (!dump_ctx->nest)
2083 goto nla_put_failure;
2084 return 0;
2085
2086nla_put_failure:
1555d204
AS		 2087 nlmsg_free(dump_ctx->skb);
2088 return -EMSGSIZE;
2089}
2090EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2091
2092int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2093 struct devlink_dpipe_entry *entry)
2094{
2095 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2096}
2097EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2098
2099int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2100{
2101 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2102 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2103 return 0;
2104}
2105EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2106
35807324
AS		 2107void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2108
2109{
2110 unsigned int value_count, value_index;
2111 struct devlink_dpipe_value *value;
2112
2113 value = entry->action_values;
2114 value_count = entry->action_values_count;
2115 for (value_index = 0; value_index < value_count; value_index++) {
2116 kfree(value[value_index].value);
2117 kfree(value[value_index].mask);
2118 }
2119
2120 value = entry->match_values;
2121 value_count = entry->match_values_count;
2122 for (value_index = 0; value_index < value_count; value_index++) {
2123 kfree(value[value_index].value);
2124 kfree(value[value_index].mask);
2125 }
2126}
2127EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2128
1555d204
AS		 2129static int devlink_dpipe_entries_fill(struct genl_info *info,
2130 enum devlink_command cmd, int flags,
2131 struct devlink_dpipe_table *table)
2132{
2133 struct devlink_dpipe_dump_ctx dump_ctx;
2134 struct nlmsghdr *nlh;
2135 int err;
2136
2137 dump_ctx.skb = NULL;
2138 dump_ctx.cmd = cmd;
2139 dump_ctx.info = info;
2140
2141 err = table->table_ops->entries_dump(table->priv,
2142 table->counters_enabled,
2143 &dump_ctx);
2144 if (err)
7fe4d6dc 2145 return err;
1555d204
AS		 2146
2147send_done:
2148 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2149 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2150 if (!nlh) {
2151 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2152 if (err)
7fe4d6dc 2153 return err;
1555d204
AS		 2154 goto send_done;
2155 }
2156 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 2157}
2158
2159static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2160 struct genl_info *info)
2161{
2162 struct devlink *devlink = info->user_ptr[0];
2163 struct devlink_dpipe_table *table;
2164 const char *table_name;
2165
2166 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2167 return -EINVAL;
2168
2169 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2170 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2171 table_name);
2172 if (!table)
2173 return -EINVAL;
2174
2175 if (!table->table_ops->entries_dump)
2176 return -EINVAL;
2177
2178 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2179 0, table);
2180}
2181
2182static int devlink_dpipe_fields_put(struct sk_buff *skb,
2183 const struct devlink_dpipe_header *header)
2184{
2185 struct devlink_dpipe_field *field;
2186 struct nlattr *field_attr;
2187 int i;
2188
2189 for (i = 0; i < header->fields_count; i++) {
2190 field = &header->fields[i];
2191 field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
2192 if (!field_attr)
2193 return -EMSGSIZE;
2194 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2195 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2196 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2197 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2198 goto nla_put_failure;
2199 nla_nest_end(skb, field_attr);
2200 }
2201 return 0;
2202
2203nla_put_failure:
2204 nla_nest_cancel(skb, field_attr);
2205 return -EMSGSIZE;
2206}
2207
2208static int devlink_dpipe_header_put(struct sk_buff *skb,
2209 struct devlink_dpipe_header *header)
2210{
2211 struct nlattr *fields_attr, *header_attr;
2212 int err;
2213
2214 header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2215 if (!header_attr)
1555d204
AS		 2216 return -EMSGSIZE;
2217
2218 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2219 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2220 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2221 goto nla_put_failure;
2222
2223 fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2224 if (!fields_attr)
2225 goto nla_put_failure;
2226
2227 err = devlink_dpipe_fields_put(skb, header);
2228 if (err) {
2229 nla_nest_cancel(skb, fields_attr);
2230 goto nla_put_failure;
2231 }
2232 nla_nest_end(skb, fields_attr);
2233 nla_nest_end(skb, header_attr);
2234 return 0;
2235
2236nla_put_failure:
2237 err = -EMSGSIZE;
2238 nla_nest_cancel(skb, header_attr);
2239 return err;
2240}
2241
2242static int devlink_dpipe_headers_fill(struct genl_info *info,
2243 enum devlink_command cmd, int flags,
2244 struct devlink_dpipe_headers *
2245 dpipe_headers)
2246{
2247 struct devlink *devlink = info->user_ptr[0];
2248 struct nlattr *headers_attr;
2249 struct sk_buff *skb = NULL;
2250 struct nlmsghdr *nlh;
2251 void *hdr;
2252 int i, j;
2253 int err;
2254
2255 i = 0;
2256start_again:
2257 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2258 if (err)
2259 return err;
2260
2261 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2262 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2263 if (!hdr) {
2264 nlmsg_free(skb);
1555d204 2265 return -EMSGSIZE;
6044bd4a 2266 }
1555d204
AS		 2267
2268 if (devlink_nl_put_handle(skb, devlink))
2269 goto nla_put_failure;
2270 headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2271 if (!headers_attr)
2272 goto nla_put_failure;
2273
2274 j = 0;
2275 for (; i < dpipe_headers->headers_count; i++) {
2276 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2277 if (err) {
2278 if (!j)
2279 goto err_table_put;
2280 break;
2281 }
2282 j++;
2283 }
2284 nla_nest_end(skb, headers_attr);
2285 genlmsg_end(skb, hdr);
2286 if (i != dpipe_headers->headers_count)
2287 goto start_again;
2288
2289send_done:
2290 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2291 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2292 if (!nlh) {
2293 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2294 if (err)
7fe4d6dc 2295 return err;
1555d204
AS		 2296 goto send_done;
2297 }
2298 return genlmsg_reply(skb, info);
2299
2300nla_put_failure:
2301 err = -EMSGSIZE;
2302err_table_put:
1555d204
AS		 2303 nlmsg_free(skb);
2304 return err;
2305}
2306
2307static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2308 struct genl_info *info)
2309{
2310 struct devlink *devlink = info->user_ptr[0];
2311
2312 if (!devlink->dpipe_headers)
2313 return -EOPNOTSUPP;
2314 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2315 0, devlink->dpipe_headers);
2316}
2317
2318static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2319 const char *table_name,
2320 bool enable)
2321{
2322 struct devlink_dpipe_table *table;
2323
2324 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2325 table_name);
2326 if (!table)
2327 return -EINVAL;
2328
2329 if (table->counter_control_extern)
2330 return -EOPNOTSUPP;
2331
2332 if (!(table->counters_enabled ^ enable))
2333 return 0;
2334
2335 table->counters_enabled = enable;
2336 if (table->table_ops->counters_set_update)
2337 table->table_ops->counters_set_update(table->priv, enable);
2338 return 0;
2339}
2340
2341static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2342 struct genl_info *info)
2343{
2344 struct devlink *devlink = info->user_ptr[0];
2345 const char *table_name;
2346 bool counters_enable;
2347
2348 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2349 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2350 return -EINVAL;
2351
2352 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2353 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2354
2355 return devlink_dpipe_table_counters_set(devlink, table_name,
2356 counters_enable);
08f4b591
OG		 2357}
2358
43dd7512 2359static struct devlink_resource *
d9f9b9a4
AS		 2360devlink_resource_find(struct devlink *devlink,
2361 struct devlink_resource *resource, u64 resource_id)
2362{
2363 struct list_head *resource_list;
2364
2365 if (resource)
2366 resource_list = &resource->resource_list;
2367 else
2368 resource_list = &devlink->resource_list;
2369
2370 list_for_each_entry(resource, resource_list, list) {
2371 struct devlink_resource *child_resource;
2372
2373 if (resource->id == resource_id)
2374 return resource;
2375
2376 child_resource = devlink_resource_find(devlink, resource,
2377 resource_id);
2378 if (child_resource)
2379 return child_resource;
2380 }
2381 return NULL;
2382}
2383
43dd7512
WY		 2384static void
2385devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 2386{
2387 struct devlink_resource *child_resource;
2388 bool size_valid = true;
2389 u64 parts_size = 0;
2390
2391 if (list_empty(&resource->resource_list))
2392 goto out;
2393
2394 list_for_each_entry(child_resource, &resource->resource_list, list)
2395 parts_size += child_resource->size_new;
2396
b9d17175 2397 if (parts_size > resource->size_new)
d9f9b9a4
AS		 2398 size_valid = false;
2399out:
2400 resource->size_valid = size_valid;
2401}
2402
cc944ead
AS		 2403static int
2404devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2405 struct netlink_ext_ack *extack)
2406{
2407 u64 reminder;
2408 int err = 0;
2409
0f3e9c97 2410 if (size > resource->size_params.size_max) {
cc944ead
AS		 2411 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2412 err = -EINVAL;
2413 }
2414
0f3e9c97 2415 if (size < resource->size_params.size_min) {
cc944ead
AS		 2416 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2417 err = -EINVAL;
2418 }
2419
0f3e9c97 2420 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 2421 if (reminder) {
2422 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2423 err = -EINVAL;
2424 }
2425
2426 return err;
2427}
2428
d9f9b9a4
AS		 2429static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2430 struct genl_info *info)
2431{
2432 struct devlink *devlink = info->user_ptr[0];
2433 struct devlink_resource *resource;
2434 u64 resource_id;
2435 u64 size;
2436 int err;
2437
2438 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2439 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2440 return -EINVAL;
2441 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2442
2443 resource = devlink_resource_find(devlink, NULL, resource_id);
2444 if (!resource)
2445 return -EINVAL;
2446
d9f9b9a4 2447 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 2448 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 2449 if (err)
2450 return err;
2451
2452 resource->size_new = size;
2453 devlink_resource_validate_children(resource);
2454 if (resource->parent)
2455 devlink_resource_validate_children(resource->parent);
2456 return 0;
2457}
2458
3d18e4f1 2459static int
d9f9b9a4
AS		 2460devlink_resource_size_params_put(struct devlink_resource *resource,
2461 struct sk_buff *skb)
2462{
2463 struct devlink_resource_size_params *size_params;
2464
77d27096 2465 size_params = &resource->size_params;
3d18e4f1
AS		 2466 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2467 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2468 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2469 size_params->size_max, DEVLINK_ATTR_PAD) ||
2470 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2471 size_params->size_min, DEVLINK_ATTR_PAD) ||
2472 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2473 return -EMSGSIZE;
2474 return 0;
d9f9b9a4
AS		 2475}
2476
fc56be47
JP		 2477static int devlink_resource_occ_put(struct devlink_resource *resource,
2478 struct sk_buff *skb)
2479{
2480 if (!resource->occ_get)
2481 return 0;
2482 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2483 resource->occ_get(resource->occ_get_priv),
2484 DEVLINK_ATTR_PAD);
2485}
2486
d9f9b9a4
AS		 2487static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2488 struct devlink_resource *resource)
2489{
2490 struct devlink_resource *child_resource;
2491 struct nlattr *child_resource_attr;
2492 struct nlattr *resource_attr;
2493
2494 resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE);
2495 if (!resource_attr)
2496 return -EMSGSIZE;
2497
2498 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2499 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2500 DEVLINK_ATTR_PAD) ||
2501 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2502 DEVLINK_ATTR_PAD))
2503 goto nla_put_failure;
2504 if (resource->size != resource->size_new)
2505 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2506 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 2507 if (devlink_resource_occ_put(resource, skb))
2508 goto nla_put_failure;
3d18e4f1
AS		 2509 if (devlink_resource_size_params_put(resource, skb))
2510 goto nla_put_failure;
d9f9b9a4
AS		 2511 if (list_empty(&resource->resource_list))
2512 goto out;
2513
2514 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2515 resource->size_valid))
2516 goto nla_put_failure;
2517
2518 child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2519 if (!child_resource_attr)
2520 goto nla_put_failure;
2521
2522 list_for_each_entry(child_resource, &resource->resource_list, list) {
2523 if (devlink_resource_put(devlink, skb, child_resource))
2524 goto resource_put_failure;
2525 }
2526
2527 nla_nest_end(skb, child_resource_attr);
2528out:
2529 nla_nest_end(skb, resource_attr);
2530 return 0;
2531
2532resource_put_failure:
2533 nla_nest_cancel(skb, child_resource_attr);
2534nla_put_failure:
2535 nla_nest_cancel(skb, resource_attr);
2536 return -EMSGSIZE;
2537}
2538
2539static int devlink_resource_fill(struct genl_info *info,
2540 enum devlink_command cmd, int flags)
2541{
2542 struct devlink *devlink = info->user_ptr[0];
2543 struct devlink_resource *resource;
2544 struct nlattr *resources_attr;
2545 struct sk_buff *skb = NULL;
2546 struct nlmsghdr *nlh;
2547 bool incomplete;
2548 void *hdr;
2549 int i;
2550 int err;
2551
2552 resource = list_first_entry(&devlink->resource_list,
2553 struct devlink_resource, list);
2554start_again:
2555 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2556 if (err)
2557 return err;
2558
2559 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2560 &devlink_nl_family, NLM_F_MULTI, cmd);
2561 if (!hdr) {
2562 nlmsg_free(skb);
2563 return -EMSGSIZE;
2564 }
2565
2566 if (devlink_nl_put_handle(skb, devlink))
2567 goto nla_put_failure;
2568
2569 resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2570 if (!resources_attr)
2571 goto nla_put_failure;
2572
2573 incomplete = false;
2574 i = 0;
2575 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2576 err = devlink_resource_put(devlink, skb, resource);
2577 if (err) {
2578 if (!i)
2579 goto err_resource_put;
2580 incomplete = true;
2581 break;
2582 }
2583 i++;
2584 }
2585 nla_nest_end(skb, resources_attr);
2586 genlmsg_end(skb, hdr);
2587 if (incomplete)
2588 goto start_again;
2589send_done:
2590 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2591 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2592 if (!nlh) {
2593 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2594 if (err)
83fe9a96 2595 return err;
d9f9b9a4
AS		 2596 goto send_done;
2597 }
2598 return genlmsg_reply(skb, info);
2599
2600nla_put_failure:
2601 err = -EMSGSIZE;
2602err_resource_put:
d9f9b9a4
AS		 2603 nlmsg_free(skb);
2604 return err;
2605}
2606
2607static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2608 struct genl_info *info)
2609{
2610 struct devlink *devlink = info->user_ptr[0];
2611
2612 if (list_empty(&devlink->resource_list))
2613 return -EOPNOTSUPP;
2614
2615 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2616}
2617
2d8dc5bb
AS		 2618static int
2619devlink_resources_validate(struct devlink *devlink,
2620 struct devlink_resource *resource,
2621 struct genl_info *info)
2622{
2623 struct list_head *resource_list;
2624 int err = 0;
2625
2626 if (resource)
2627 resource_list = &resource->resource_list;
2628 else
2629 resource_list = &devlink->resource_list;
2630
2631 list_for_each_entry(resource, resource_list, list) {
2632 if (!resource->size_valid)
2633 return -EINVAL;
2634 err = devlink_resources_validate(devlink, resource, info);
2635 if (err)
2636 return err;
2637 }
2638 return err;
2639}
2640
2641static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2642{
2643 struct devlink *devlink = info->user_ptr[0];
2644 int err;
2645
2646 if (!devlink->ops->reload)
2647 return -EOPNOTSUPP;
2648
2649 err = devlink_resources_validate(devlink, NULL, info);
2650 if (err) {
2651 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2652 return err;
2653 }
ac0fc8a1 2654 return devlink->ops->reload(devlink, info->extack);
2d8dc5bb
AS		 2655}
2656
036467c3
MS		 2657static const struct devlink_param devlink_param_generic[] = {
2658 {
2659 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2660 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2661 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2662 },
2663 {
2664 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2665 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2666 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2667 },
f567bcda
VV		 2668 {
2669 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2670 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2671 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2672 },
f6a69885
AV		 2673 {
2674 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2675 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2676 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2677 },
036467c3 2678};
eabaef18
MS		 2679
2680static int devlink_param_generic_verify(const struct devlink_param *param)
2681{
2682 /* verify it match generic parameter by id and name */
2683 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
2684 return -EINVAL;
2685 if (strcmp(param->name, devlink_param_generic[param->id].name))
2686 return -ENOENT;
2687
2688 WARN_ON(param->type != devlink_param_generic[param->id].type);
2689
2690 return 0;
2691}
2692
2693static int devlink_param_driver_verify(const struct devlink_param *param)
2694{
2695 int i;
2696
2697 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
2698 return -EINVAL;
2699 /* verify no such name in generic params */
2700 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
2701 if (!strcmp(param->name, devlink_param_generic[i].name))
2702 return -EEXIST;
2703
2704 return 0;
2705}
2706
2707static struct devlink_param_item *
2708devlink_param_find_by_name(struct list_head *param_list,
2709 const char *param_name)
2710{
2711 struct devlink_param_item *param_item;
2712
2713 list_for_each_entry(param_item, param_list, list)
2714 if (!strcmp(param_item->param->name, param_name))
2715 return param_item;
2716 return NULL;
2717}
2718
ec01aeb1
MS		 2719static struct devlink_param_item *
2720devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
2721{
2722 struct devlink_param_item *param_item;
2723
2724 list_for_each_entry(param_item, param_list, list)
2725 if (param_item->param->id == param_id)
2726 return param_item;
2727 return NULL;
2728}
2729
45f05def
MS		 2730static bool
2731devlink_param_cmode_is_supported(const struct devlink_param *param,
2732 enum devlink_param_cmode cmode)
2733{
2734 return test_bit(cmode, &param->supported_cmodes);
2735}
2736
2737static int devlink_param_get(struct devlink *devlink,
2738 const struct devlink_param *param,
2739 struct devlink_param_gset_ctx *ctx)
2740{
2741 if (!param->get)
2742 return -EOPNOTSUPP;
2743 return param->get(devlink, param->id, ctx);
2744}
2745
e3b7ca18
MS		 2746static int devlink_param_set(struct devlink *devlink,
2747 const struct devlink_param *param,
2748 struct devlink_param_gset_ctx *ctx)
2749{
2750 if (!param->set)
2751 return -EOPNOTSUPP;
2752 return param->set(devlink, param->id, ctx);
2753}
2754
45f05def
MS		 2755static int
2756devlink_param_type_to_nla_type(enum devlink_param_type param_type)
2757{
2758 switch (param_type) {
2759 case DEVLINK_PARAM_TYPE_U8:
2760 return NLA_U8;
2761 case DEVLINK_PARAM_TYPE_U16:
2762 return NLA_U16;
2763 case DEVLINK_PARAM_TYPE_U32:
2764 return NLA_U32;
2765 case DEVLINK_PARAM_TYPE_STRING:
2766 return NLA_STRING;
2767 case DEVLINK_PARAM_TYPE_BOOL:
2768 return NLA_FLAG;
2769 default:
2770 return -EINVAL;
2771 }
2772}
2773
2774static int
2775devlink_nl_param_value_fill_one(struct sk_buff *msg,
2776 enum devlink_param_type type,
2777 enum devlink_param_cmode cmode,
2778 union devlink_param_value val)
2779{
2780 struct nlattr *param_value_attr;
2781
2782 param_value_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUE);
2783 if (!param_value_attr)
2784 goto nla_put_failure;
2785
2786 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
2787 goto value_nest_cancel;
2788
2789 switch (type) {
2790 case DEVLINK_PARAM_TYPE_U8:
2791 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
2792 goto value_nest_cancel;
2793 break;
2794 case DEVLINK_PARAM_TYPE_U16:
2795 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
2796 goto value_nest_cancel;
2797 break;
2798 case DEVLINK_PARAM_TYPE_U32:
2799 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
2800 goto value_nest_cancel;
2801 break;
2802 case DEVLINK_PARAM_TYPE_STRING:
2803 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
2804 val.vstr))
2805 goto value_nest_cancel;
2806 break;
2807 case DEVLINK_PARAM_TYPE_BOOL:
2808 if (val.vbool &&
2809 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
2810 goto value_nest_cancel;
2811 break;
2812 }
2813
2814 nla_nest_end(msg, param_value_attr);
2815 return 0;
2816
2817value_nest_cancel:
2818 nla_nest_cancel(msg, param_value_attr);
2819nla_put_failure:
2820 return -EMSGSIZE;
2821}
2822
2823static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
2824 struct devlink_param_item *param_item,
2825 enum devlink_command cmd,
2826 u32 portid, u32 seq, int flags)
2827{
2828 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
2829 const struct devlink_param *param = param_item->param;
2830 struct devlink_param_gset_ctx ctx;
2831 struct nlattr *param_values_list;
2832 struct nlattr *param_attr;
2833 int nla_type;
2834 void *hdr;
2835 int err;
2836 int i;
2837
2838 /* Get value from driver part to driverinit configuration mode */
2839 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
2840 if (!devlink_param_cmode_is_supported(param, i))
2841 continue;
2842 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
2843 if (!param_item->driverinit_value_valid)
2844 return -EOPNOTSUPP;
2845 param_value[i] = param_item->driverinit_value;
2846 } else {
2847 ctx.cmode = i;
2848 err = devlink_param_get(devlink, param, &ctx);
2849 if (err)
2850 return err;
2851 param_value[i] = ctx.val;
2852 }
2853 }
2854
2855 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2856 if (!hdr)
2857 return -EMSGSIZE;
2858
2859 if (devlink_nl_put_handle(msg, devlink))
2860 goto genlmsg_cancel;
2861 param_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM);
2862 if (!param_attr)
2863 goto genlmsg_cancel;
2864 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
2865 goto param_nest_cancel;
2866 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
2867 goto param_nest_cancel;
2868
2869 nla_type = devlink_param_type_to_nla_type(param->type);
2870 if (nla_type < 0)
2871 goto param_nest_cancel;
2872 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
2873 goto param_nest_cancel;
2874
2875 param_values_list = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUES_LIST);
2876 if (!param_values_list)
2877 goto param_nest_cancel;
2878
2879 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
2880 if (!devlink_param_cmode_is_supported(param, i))
2881 continue;
2882 err = devlink_nl_param_value_fill_one(msg, param->type,
2883 i, param_value[i]);
2884 if (err)
2885 goto values_list_nest_cancel;
2886 }
2887
2888 nla_nest_end(msg, param_values_list);
2889 nla_nest_end(msg, param_attr);
2890 genlmsg_end(msg, hdr);
2891 return 0;
2892
2893values_list_nest_cancel:
2894 nla_nest_end(msg, param_values_list);
2895param_nest_cancel:
2896 nla_nest_cancel(msg, param_attr);
2897genlmsg_cancel:
2898 genlmsg_cancel(msg, hdr);
2899 return -EMSGSIZE;
2900}
2901
ea601e17
MS		 2902static void devlink_param_notify(struct devlink *devlink,
2903 struct devlink_param_item *param_item,
2904 enum devlink_command cmd)
2905{
2906 struct sk_buff *msg;
2907 int err;
2908
2909 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL);
2910
2911 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2912 if (!msg)
2913 return;
2914 err = devlink_nl_param_fill(msg, devlink, param_item, cmd, 0, 0, 0);
2915 if (err) {
2916 nlmsg_free(msg);
2917 return;
2918 }
2919
2920 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2921 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2922}
2923
45f05def
MS		 2924static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
2925 struct netlink_callback *cb)
2926{
2927 struct devlink_param_item *param_item;
2928 struct devlink *devlink;
2929 int start = cb->args[0];
2930 int idx = 0;
2931 int err;
2932
2933 mutex_lock(&devlink_mutex);
2934 list_for_each_entry(devlink, &devlink_list, list) {
2935 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
2936 continue;
2937 mutex_lock(&devlink->lock);
2938 list_for_each_entry(param_item, &devlink->param_list, list) {
2939 if (idx < start) {
2940 idx++;
2941 continue;
2942 }
2943 err = devlink_nl_param_fill(msg, devlink, param_item,
2944 DEVLINK_CMD_PARAM_GET,
2945 NETLINK_CB(cb->skb).portid,
2946 cb->nlh->nlmsg_seq,
2947 NLM_F_MULTI);
2948 if (err) {
2949 mutex_unlock(&devlink->lock);
2950 goto out;
2951 }
2952 idx++;
2953 }
2954 mutex_unlock(&devlink->lock);
2955 }
2956out:
2957 mutex_unlock(&devlink_mutex);
2958
2959 cb->args[0] = idx;
2960 return msg->len;
2961}
2962
e3b7ca18
MS		 2963static int
2964devlink_param_type_get_from_info(struct genl_info *info,
2965 enum devlink_param_type *param_type)
2966{
2967 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
2968 return -EINVAL;
2969
2970 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
2971 case NLA_U8:
2972 *param_type = DEVLINK_PARAM_TYPE_U8;
2973 break;
2974 case NLA_U16:
2975 *param_type = DEVLINK_PARAM_TYPE_U16;
2976 break;
2977 case NLA_U32:
2978 *param_type = DEVLINK_PARAM_TYPE_U32;
2979 break;
2980 case NLA_STRING:
2981 *param_type = DEVLINK_PARAM_TYPE_STRING;
2982 break;
2983 case NLA_FLAG:
2984 *param_type = DEVLINK_PARAM_TYPE_BOOL;
2985 break;
2986 default:
2987 return -EINVAL;
2988 }
2989
2990 return 0;
2991}
2992
2993static int
2994devlink_param_value_get_from_info(const struct devlink_param *param,
2995 struct genl_info *info,
2996 union devlink_param_value *value)
2997{
2998 if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
2999 !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
3000 return -EINVAL;
3001
3002 switch (param->type) {
3003 case DEVLINK_PARAM_TYPE_U8:
3004 value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3005 break;
3006 case DEVLINK_PARAM_TYPE_U16:
3007 value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3008 break;
3009 case DEVLINK_PARAM_TYPE_U32:
3010 value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3011 break;
3012 case DEVLINK_PARAM_TYPE_STRING:
3013 if (nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) >
3014 DEVLINK_PARAM_MAX_STRING_VALUE)
3015 return -EINVAL;
3016 value->vstr = nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3017 break;
3018 case DEVLINK_PARAM_TYPE_BOOL:
3019 value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
3020 true : false;
3021 break;
3022 }
3023 return 0;
3024}
3025
45f05def
MS		 3026static struct devlink_param_item *
3027devlink_param_get_from_info(struct devlink *devlink,
3028 struct genl_info *info)
3029{
3030 char *param_name;
3031
3032 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3033 return NULL;
3034
3035 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
3036 return devlink_param_find_by_name(&devlink->param_list, param_name);
3037}
3038
3039static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3040 struct genl_info *info)
3041{
3042 struct devlink *devlink = info->user_ptr[0];
3043 struct devlink_param_item *param_item;
3044 struct sk_buff *msg;
3045 int err;
3046
3047 param_item = devlink_param_get_from_info(devlink, info);
3048 if (!param_item)
3049 return -EINVAL;
3050
3051 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3052 if (!msg)
3053 return -ENOMEM;
3054
3055 err = devlink_nl_param_fill(msg, devlink, param_item,
3056 DEVLINK_CMD_PARAM_GET,
3057 info->snd_portid, info->snd_seq, 0);
3058 if (err) {
3059 nlmsg_free(msg);
3060 return err;
3061 }
3062
3063 return genlmsg_reply(msg, info);
3064}
3065
e3b7ca18
MS		 3066static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3067 struct genl_info *info)
3068{
3069 struct devlink *devlink = info->user_ptr[0];
3070 enum devlink_param_type param_type;
3071 struct devlink_param_gset_ctx ctx;
3072 enum devlink_param_cmode cmode;
3073 struct devlink_param_item *param_item;
3074 const struct devlink_param *param;
3075 union devlink_param_value value;
3076 int err = 0;
3077
3078 param_item = devlink_param_get_from_info(devlink, info);
3079 if (!param_item)
3080 return -EINVAL;
3081 param = param_item->param;
3082 err = devlink_param_type_get_from_info(info, &param_type);
3083 if (err)
3084 return err;
3085 if (param_type != param->type)
3086 return -EINVAL;
3087 err = devlink_param_value_get_from_info(param, info, &value);
3088 if (err)
3089 return err;
3090 if (param->validate) {
3091 err = param->validate(devlink, param->id, value, info->extack);
3092 if (err)
3093 return err;
3094 }
3095
3096 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3097 return -EINVAL;
3098 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3099 if (!devlink_param_cmode_is_supported(param, cmode))
3100 return -EOPNOTSUPP;
3101
3102 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3103 param_item->driverinit_value = value;
3104 param_item->driverinit_value_valid = true;
3105 } else {
3106 if (!param->set)
3107 return -EOPNOTSUPP;
3108 ctx.val = value;
3109 ctx.cmode = cmode;
3110 err = devlink_param_set(devlink, param, &ctx);
3111 if (err)
3112 return err;
3113 }
3114
ea601e17 3115 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
e3b7ca18
MS		 3116 return 0;
3117}
3118
eabaef18
MS		 3119static int devlink_param_register_one(struct devlink *devlink,
3120 const struct devlink_param *param)
3121{
3122 struct devlink_param_item *param_item;
3123
3124 if (devlink_param_find_by_name(&devlink->param_list,
3125 param->name))
3126 return -EEXIST;
3127
3128 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3129 WARN_ON(param->get || param->set);
3130 else
3131 WARN_ON(!param->get || !param->set);
3132
3133 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3134 if (!param_item)
3135 return -ENOMEM;
3136 param_item->param = param;
3137
3138 list_add_tail(&param_item->list, &devlink->param_list);
ea601e17 3139 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
eabaef18
MS		 3140 return 0;
3141}
3142
3143static void devlink_param_unregister_one(struct devlink *devlink,
3144 const struct devlink_param *param)
3145{
3146 struct devlink_param_item *param_item;
3147
3148 param_item = devlink_param_find_by_name(&devlink->param_list,
3149 param->name);
3150 WARN_ON(!param_item);
ea601e17 3151 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 3152 list_del(&param_item->list);
3153 kfree(param_item);
3154}
3155
a006d467
AV		 3156static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3157 struct devlink *devlink,
3158 struct devlink_snapshot *snapshot)
3159{
3160 struct nlattr *snap_attr;
3161 int err;
3162
3163 snap_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
3164 if (!snap_attr)
3165 return -EINVAL;
3166
3167 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3168 if (err)
3169 goto nla_put_failure;
3170
3171 nla_nest_end(msg, snap_attr);
3172 return 0;
3173
3174nla_put_failure:
3175 nla_nest_cancel(msg, snap_attr);
3176 return err;
3177}
3178
3179static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3180 struct devlink *devlink,
3181 struct devlink_region *region)
3182{
3183 struct devlink_snapshot *snapshot;
3184 struct nlattr *snapshots_attr;
3185 int err;
3186
3187 snapshots_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOTS);
3188 if (!snapshots_attr)
3189 return -EINVAL;
3190
3191 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3192 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3193 if (err)
3194 goto nla_put_failure;
3195 }
3196
3197 nla_nest_end(msg, snapshots_attr);
3198 return 0;
3199
3200nla_put_failure:
3201 nla_nest_cancel(msg, snapshots_attr);
3202 return err;
3203}
3204
d8db7ea5
AV		 3205static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3206 enum devlink_command cmd, u32 portid,
3207 u32 seq, int flags,
3208 struct devlink_region *region)
3209{
3210 void *hdr;
3211 int err;
3212
3213 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3214 if (!hdr)
3215 return -EMSGSIZE;
3216
3217 err = devlink_nl_put_handle(msg, devlink);
3218 if (err)
3219 goto nla_put_failure;
3220
3221 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3222 if (err)
3223 goto nla_put_failure;
3224
3225 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3226 region->size,
3227 DEVLINK_ATTR_PAD);
3228 if (err)
3229 goto nla_put_failure;
3230
a006d467
AV		 3231 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3232 if (err)
3233 goto nla_put_failure;
3234
d8db7ea5
AV		 3235 genlmsg_end(msg, hdr);
3236 return 0;
3237
3238nla_put_failure:
3239 genlmsg_cancel(msg, hdr);
3240 return err;
3241}
3242
866319bb
AV		 3243static void devlink_nl_region_notify(struct devlink_region *region,
3244 struct devlink_snapshot *snapshot,
3245 enum devlink_command cmd)
3246{
3247 struct devlink *devlink = region->devlink;
3248 struct sk_buff *msg;
3249 void *hdr;
3250 int err;
3251
3252 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3253
3254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3255 if (!msg)
3256 return;
3257
3258 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3259 if (!hdr)
3260 goto out_free_msg;
3261
3262 err = devlink_nl_put_handle(msg, devlink);
3263 if (err)
3264 goto out_cancel_msg;
3265
3266 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3267 region->name);
3268 if (err)
3269 goto out_cancel_msg;
3270
3271 if (snapshot) {
3272 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3273 snapshot->id);
3274 if (err)
3275 goto out_cancel_msg;
3276 } else {
3277 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3278 region->size, DEVLINK_ATTR_PAD);
3279 if (err)
3280 goto out_cancel_msg;
3281 }
3282 genlmsg_end(msg, hdr);
3283
3284 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3285 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3286
3287 return;
3288
3289out_cancel_msg:
3290 genlmsg_cancel(msg, hdr);
3291out_free_msg:
3292 nlmsg_free(msg);
3293}
3294
d8db7ea5
AV		 3295static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3296 struct genl_info *info)
3297{
3298 struct devlink *devlink = info->user_ptr[0];
3299 struct devlink_region *region;
3300 const char *region_name;
3301 struct sk_buff *msg;
3302 int err;
3303
3304 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3305 return -EINVAL;
3306
3307 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3308 region = devlink_region_get_by_name(devlink, region_name);
3309 if (!region)
3310 return -EINVAL;
3311
3312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3313 if (!msg)
3314 return -ENOMEM;
3315
3316 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3317 info->snd_portid, info->snd_seq, 0,
3318 region);
3319 if (err) {
3320 nlmsg_free(msg);
3321 return err;
3322 }
3323
3324 return genlmsg_reply(msg, info);
3325}
3326
3327static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3328 struct netlink_callback *cb)
3329{
3330 struct devlink_region *region;
3331 struct devlink *devlink;
3332 int start = cb->args[0];
3333 int idx = 0;
3334 int err;
3335
3336 mutex_lock(&devlink_mutex);
3337 list_for_each_entry(devlink, &devlink_list, list) {
3338 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3339 continue;
3340
3341 mutex_lock(&devlink->lock);
3342 list_for_each_entry(region, &devlink->region_list, list) {
3343 if (idx < start) {
3344 idx++;
3345 continue;
3346 }
3347 err = devlink_nl_region_fill(msg, devlink,
3348 DEVLINK_CMD_REGION_GET,
3349 NETLINK_CB(cb->skb).portid,
3350 cb->nlh->nlmsg_seq,
3351 NLM_F_MULTI, region);
3352 if (err) {
3353 mutex_unlock(&devlink->lock);
3354 goto out;
3355 }
3356 idx++;
3357 }
3358 mutex_unlock(&devlink->lock);
3359 }
3360out:
3361 mutex_unlock(&devlink_mutex);
3362 cb->args[0] = idx;
3363 return msg->len;
3364}
3365
866319bb
AV		 3366static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3367 struct genl_info *info)
3368{
3369 struct devlink *devlink = info->user_ptr[0];
3370 struct devlink_snapshot *snapshot;
3371 struct devlink_region *region;
3372 const char *region_name;
3373 u32 snapshot_id;
3374
3375 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3376 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3377 return -EINVAL;
3378
3379 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3380 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3381
3382 region = devlink_region_get_by_name(devlink, region_name);
3383 if (!region)
3384 return -EINVAL;
3385
3386 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3387 if (!snapshot)
3388 return -EINVAL;
3389
3390 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3391 devlink_region_snapshot_del(snapshot);
3392 return 0;
3393}
3394
4e54795a
AV		 3395static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3396 struct devlink *devlink,
3397 u8 *chunk, u32 chunk_size,
3398 u64 addr)
3399{
3400 struct nlattr *chunk_attr;
3401 int err;
3402
3403 chunk_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_CHUNK);
3404 if (!chunk_attr)
3405 return -EINVAL;
3406
3407 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3408 if (err)
3409 goto nla_put_failure;
3410
3411 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3412 DEVLINK_ATTR_PAD);
3413 if (err)
3414 goto nla_put_failure;
3415
3416 nla_nest_end(msg, chunk_attr);
3417 return 0;
3418
3419nla_put_failure:
3420 nla_nest_cancel(msg, chunk_attr);
3421 return err;
3422}
3423
3424#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3425
3426static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3427 struct devlink *devlink,
3428 struct devlink_region *region,
3429 struct nlattr **attrs,
3430 u64 start_offset,
3431 u64 end_offset,
3432 bool dump,
3433 u64 *new_offset)
3434{
3435 struct devlink_snapshot *snapshot;
3436 u64 curr_offset = start_offset;
3437 u32 snapshot_id;
3438 int err = 0;
3439
3440 *new_offset = start_offset;
3441
3442 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3443 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3444 if (!snapshot)
3445 return -EINVAL;
3446
3447 if (end_offset > snapshot->data_len || dump)
3448 end_offset = snapshot->data_len;
3449
3450 while (curr_offset < end_offset) {
3451 u32 data_size;
3452 u8 *data;
3453
3454 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3455 data_size = end_offset - curr_offset;
3456 else
3457 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3458
3459 data = &snapshot->data[curr_offset];
3460 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3461 data, data_size,
3462 curr_offset);
3463 if (err)
3464 break;
3465
3466 curr_offset += data_size;
3467 }
3468 *new_offset = curr_offset;
3469
3470 return err;
3471}
3472
3473static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3474 struct netlink_callback *cb)
3475{
3476 u64 ret_offset, start_offset, end_offset = 0;
3477 struct nlattr *attrs[DEVLINK_ATTR_MAX + 1];
3478 const struct genl_ops *ops = cb->data;
3479 struct devlink_region *region;
3480 struct nlattr *chunks_attr;
3481 const char *region_name;
3482 struct devlink *devlink;
3483 bool dump = true;
3484 void *hdr;
3485 int err;
3486
3487 start_offset = *((u64 *)&cb->args[0]);
3488
3489 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + devlink_nl_family.hdrsize,
3490 attrs, DEVLINK_ATTR_MAX, ops->policy, NULL);
3491 if (err)
3492 goto out;
3493
3494 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
3495 if (IS_ERR(devlink))
3496 goto out;
3497
3498 mutex_lock(&devlink_mutex);
3499 mutex_lock(&devlink->lock);
3500
3501 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
3502 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3503 goto out_unlock;
3504
3505 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3506 region = devlink_region_get_by_name(devlink, region_name);
3507 if (!region)
3508 goto out_unlock;
3509
3510 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3511 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3512 DEVLINK_CMD_REGION_READ);
3513 if (!hdr)
3514 goto out_unlock;
3515
3516 err = devlink_nl_put_handle(skb, devlink);
3517 if (err)
3518 goto nla_put_failure;
3519
3520 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
3521 if (err)
3522 goto nla_put_failure;
3523
3524 chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS);
3525 if (!chunks_attr)
3526 goto nla_put_failure;
3527
3528 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
3529 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
3530 if (!start_offset)
3531 start_offset =
3532 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3533
3534 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3535 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
3536 dump = false;
3537 }
3538
3539 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
3540 region, attrs,
3541 start_offset,
3542 end_offset, dump,
3543 &ret_offset);
3544
3545 if (err && err != -EMSGSIZE)
3546 goto nla_put_failure;
3547
3548 /* Check if there was any progress done to prevent infinite loop */
3549 if (ret_offset == start_offset)
3550 goto nla_put_failure;
3551
3552 *((u64 *)&cb->args[0]) = ret_offset;
3553
3554 nla_nest_end(skb, chunks_attr);
3555 genlmsg_end(skb, hdr);
3556 mutex_unlock(&devlink->lock);
3557 mutex_unlock(&devlink_mutex);
3558
3559 return skb->len;
3560
3561nla_put_failure:
3562 genlmsg_cancel(skb, hdr);
3563out_unlock:
3564 mutex_unlock(&devlink->lock);
3565 mutex_unlock(&devlink_mutex);
3566out:
3567 return 0;
3568}
3569
bfcd3a46
JP		 3570static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
3571 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
3572 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
3573 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
3574 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
3575 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 3576 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
3577 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
3578 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
3579 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
3580 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
3581 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
3582 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 3583 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 3584 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 3585 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 3586 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
3587 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 3588 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
3589 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 3590 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
3591 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
3592 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 3593 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 3594 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
bfcd3a46
JP		 3595};
3596
3597static const struct genl_ops devlink_nl_ops[] = {
3598 {
3599 .cmd = DEVLINK_CMD_GET,
3600 .doit = devlink_nl_cmd_get_doit,
3601 .dumpit = devlink_nl_cmd_get_dumpit,
3602 .policy = devlink_nl_policy,
1fc2257e 3603 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 3604 /* can be retrieved by unprivileged users */
3605 },
3606 {
3607 .cmd = DEVLINK_CMD_PORT_GET,
3608 .doit = devlink_nl_cmd_port_get_doit,
3609 .dumpit = devlink_nl_cmd_port_get_dumpit,
3610 .policy = devlink_nl_policy,
3611 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
3612 /* can be retrieved by unprivileged users */
3613 },
3614 {
3615 .cmd = DEVLINK_CMD_PORT_SET,
3616 .doit = devlink_nl_cmd_port_set_doit,
3617 .policy = devlink_nl_policy,
3618 .flags = GENL_ADMIN_PERM,
3619 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
3620 },
3621 {
3622 .cmd = DEVLINK_CMD_PORT_SPLIT,
3623 .doit = devlink_nl_cmd_port_split_doit,
3624 .policy = devlink_nl_policy,
3625 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 3626 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3627 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 3628 },
3629 {
3630 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
3631 .doit = devlink_nl_cmd_port_unsplit_doit,
3632 .policy = devlink_nl_policy,
3633 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 3634 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3635 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 3636 },
bf797471
JP		 3637 {
3638 .cmd = DEVLINK_CMD_SB_GET,
3639 .doit = devlink_nl_cmd_sb_get_doit,
3640 .dumpit = devlink_nl_cmd_sb_get_dumpit,
3641 .policy = devlink_nl_policy,
3642 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3643 DEVLINK_NL_FLAG_NEED_SB,
3644 /* can be retrieved by unprivileged users */
3645 },
3646 {
3647 .cmd = DEVLINK_CMD_SB_POOL_GET,
3648 .doit = devlink_nl_cmd_sb_pool_get_doit,
3649 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
3650 .policy = devlink_nl_policy,
3651 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3652 DEVLINK_NL_FLAG_NEED_SB,
3653 /* can be retrieved by unprivileged users */
3654 },
3655 {
3656 .cmd = DEVLINK_CMD_SB_POOL_SET,
3657 .doit = devlink_nl_cmd_sb_pool_set_doit,
3658 .policy = devlink_nl_policy,
3659 .flags = GENL_ADMIN_PERM,
3660 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3661 DEVLINK_NL_FLAG_NEED_SB,
3662 },
3663 {
3664 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
3665 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
3666 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
3667 .policy = devlink_nl_policy,
3668 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3669 DEVLINK_NL_FLAG_NEED_SB,
3670 /* can be retrieved by unprivileged users */
3671 },
3672 {
3673 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
3674 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
3675 .policy = devlink_nl_policy,
3676 .flags = GENL_ADMIN_PERM,
3677 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3678 DEVLINK_NL_FLAG_NEED_SB,
3679 },
3680 {
3681 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
3682 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
3683 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
3684 .policy = devlink_nl_policy,
3685 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3686 DEVLINK_NL_FLAG_NEED_SB,
3687 /* can be retrieved by unprivileged users */
3688 },
3689 {
3690 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
3691 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
3692 .policy = devlink_nl_policy,
3693 .flags = GENL_ADMIN_PERM,
3694 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3695 DEVLINK_NL_FLAG_NEED_SB,
3696 },
df38dafd
JP		 3697 {
3698 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
3699 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
3700 .policy = devlink_nl_policy,
3701 .flags = GENL_ADMIN_PERM,
3702 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 3703 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 3704 },
3705 {
3706 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
3707 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
3708 .policy = devlink_nl_policy,
3709 .flags = GENL_ADMIN_PERM,
3710 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 3711 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 3712 },
08f4b591 3713 {
adf200f3
JP		 3714 .cmd = DEVLINK_CMD_ESWITCH_GET,
3715 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 3716 .policy = devlink_nl_policy,
3717 .flags = GENL_ADMIN_PERM,
3718 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3719 },
3720 {
adf200f3
JP		 3721 .cmd = DEVLINK_CMD_ESWITCH_SET,
3722 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591
OG		 3723 .policy = devlink_nl_policy,
3724 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 3725 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3726 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 3727 },
1555d204
AS		 3728 {
3729 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
3730 .doit = devlink_nl_cmd_dpipe_table_get,
3731 .policy = devlink_nl_policy,
1555d204 3732 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 3733 /* can be retrieved by unprivileged users */
1555d204
AS		 3734 },
3735 {
3736 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
3737 .doit = devlink_nl_cmd_dpipe_entries_get,
3738 .policy = devlink_nl_policy,
1555d204 3739 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 3740 /* can be retrieved by unprivileged users */
1555d204
AS		 3741 },
3742 {
3743 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
3744 .doit = devlink_nl_cmd_dpipe_headers_get,
3745 .policy = devlink_nl_policy,
1555d204 3746 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 3747 /* can be retrieved by unprivileged users */
1555d204
AS		 3748 },
3749 {
3750 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
3751 .doit = devlink_nl_cmd_dpipe_table_counters_set,
3752 .policy = devlink_nl_policy,
3753 .flags = GENL_ADMIN_PERM,
3754 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3755 },
d9f9b9a4
AS		 3756 {
3757 .cmd = DEVLINK_CMD_RESOURCE_SET,
3758 .doit = devlink_nl_cmd_resource_set,
3759 .policy = devlink_nl_policy,
3760 .flags = GENL_ADMIN_PERM,
3761 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3762 },
3763 {
3764 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
3765 .doit = devlink_nl_cmd_resource_dump,
3766 .policy = devlink_nl_policy,
d9f9b9a4 3767 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 3768 /* can be retrieved by unprivileged users */
d9f9b9a4 3769 },
2d8dc5bb
AS		 3770 {
3771 .cmd = DEVLINK_CMD_RELOAD,
3772 .doit = devlink_nl_cmd_reload,
3773 .policy = devlink_nl_policy,
3774 .flags = GENL_ADMIN_PERM,
3775 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3776 DEVLINK_NL_FLAG_NO_LOCK,
3777 },
45f05def
MS		 3778 {
3779 .cmd = DEVLINK_CMD_PARAM_GET,
3780 .doit = devlink_nl_cmd_param_get_doit,
3781 .dumpit = devlink_nl_cmd_param_get_dumpit,
3782 .policy = devlink_nl_policy,
3783 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3784 /* can be retrieved by unprivileged users */
3785 },
e3b7ca18
MS		 3786 {
3787 .cmd = DEVLINK_CMD_PARAM_SET,
3788 .doit = devlink_nl_cmd_param_set_doit,
3789 .policy = devlink_nl_policy,
3790 .flags = GENL_ADMIN_PERM,
3791 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3792 },
d8db7ea5
AV		 3793 {
3794 .cmd = DEVLINK_CMD_REGION_GET,
3795 .doit = devlink_nl_cmd_region_get_doit,
3796 .dumpit = devlink_nl_cmd_region_get_dumpit,
3797 .policy = devlink_nl_policy,
3798 .flags = GENL_ADMIN_PERM,
3799 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3800 },
866319bb
AV		 3801 {
3802 .cmd = DEVLINK_CMD_REGION_DEL,
3803 .doit = devlink_nl_cmd_region_del,
3804 .policy = devlink_nl_policy,
3805 .flags = GENL_ADMIN_PERM,
3806 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3807 },
4e54795a
AV		 3808 {
3809 .cmd = DEVLINK_CMD_REGION_READ,
3810 .dumpit = devlink_nl_cmd_region_read_dumpit,
3811 .policy = devlink_nl_policy,
3812 .flags = GENL_ADMIN_PERM,
3813 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3814 },
bfcd3a46
JP		 3815};
3816
56989f6d 3817static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 3818 .name = DEVLINK_GENL_NAME,
3819 .version = DEVLINK_GENL_VERSION,
3820 .maxattr = DEVLINK_ATTR_MAX,
3821 .netnsok = true,
3822 .pre_doit = devlink_nl_pre_doit,
3823 .post_doit = devlink_nl_post_doit,
3824 .module = THIS_MODULE,
3825 .ops = devlink_nl_ops,
3826 .n_ops = ARRAY_SIZE(devlink_nl_ops),
3827 .mcgrps = devlink_nl_mcgrps,
3828 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
3829};
3830
bfcd3a46
JP		 3831/**
3832 * devlink_alloc - Allocate new devlink instance resources
3833 *
3834 * @ops: ops
3835 * @priv_size: size of user private data
3836 *
3837 * Allocate new devlink instance resources, including devlink index
3838 * and name.
3839 */
3840struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
3841{
3842 struct devlink *devlink;
3843
3844 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
3845 if (!devlink)
3846 return NULL;
3847 devlink->ops = ops;
3848 devlink_net_set(devlink, &init_net);
3849 INIT_LIST_HEAD(&devlink->port_list);
bf797471 3850 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 3851 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 3852 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 3853 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 3854 INIT_LIST_HEAD(&devlink->region_list);
2406e7e5 3855 mutex_init(&devlink->lock);
bfcd3a46
JP		 3856 return devlink;
3857}
3858EXPORT_SYMBOL_GPL(devlink_alloc);
3859
3860/**
3861 * devlink_register - Register devlink instance
3862 *
3863 * @devlink: devlink
3864 */
3865int devlink_register(struct devlink *devlink, struct device *dev)
3866{
3867 mutex_lock(&devlink_mutex);
3868 devlink->dev = dev;
3869 list_add_tail(&devlink->list, &devlink_list);
3870 devlink_notify(devlink, DEVLINK_CMD_NEW);
3871 mutex_unlock(&devlink_mutex);
3872 return 0;
3873}
3874EXPORT_SYMBOL_GPL(devlink_register);
3875
3876/**
3877 * devlink_unregister - Unregister devlink instance
3878 *
3879 * @devlink: devlink
3880 */
3881void devlink_unregister(struct devlink *devlink)
3882{
3883 mutex_lock(&devlink_mutex);
3884 devlink_notify(devlink, DEVLINK_CMD_DEL);
3885 list_del(&devlink->list);
3886 mutex_unlock(&devlink_mutex);
3887}
3888EXPORT_SYMBOL_GPL(devlink_unregister);
3889
3890/**
3891 * devlink_free - Free devlink instance resources
3892 *
3893 * @devlink: devlink
3894 */
3895void devlink_free(struct devlink *devlink)
3896{
3897 kfree(devlink);
3898}
3899EXPORT_SYMBOL_GPL(devlink_free);
3900
3901/**
3902 * devlink_port_register - Register devlink port
3903 *
3904 * @devlink: devlink
3905 * @devlink_port: devlink port
3906 * @port_index
3907 *
3908 * Register devlink port with provided port index. User can use
3909 * any indexing, even hw-related one. devlink_port structure
3910 * is convenient to be embedded inside user driver private structure.
3911 * Note that the caller should take care of zeroing the devlink_port
3912 * structure.
3913 */
3914int devlink_port_register(struct devlink *devlink,
3915 struct devlink_port *devlink_port,
3916 unsigned int port_index)
3917{
2406e7e5 3918 mutex_lock(&devlink->lock);
bfcd3a46 3919 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 3920 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 3921 return -EEXIST;
3922 }
3923 devlink_port->devlink = devlink;
3924 devlink_port->index = port_index;
bfcd3a46
JP		 3925 devlink_port->registered = true;
3926 list_add_tail(&devlink_port->list, &devlink->port_list);
2406e7e5 3927 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 3928 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
3929 return 0;
3930}
3931EXPORT_SYMBOL_GPL(devlink_port_register);
3932
3933/**
3934 * devlink_port_unregister - Unregister devlink port
3935 *
3936 * @devlink_port: devlink port
3937 */
3938void devlink_port_unregister(struct devlink_port *devlink_port)
3939{
2406e7e5
AS		 3940 struct devlink *devlink = devlink_port->devlink;
3941
bfcd3a46 3942 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 3943 mutex_lock(&devlink->lock);
bfcd3a46 3944 list_del(&devlink_port->list);
2406e7e5 3945 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 3946}
3947EXPORT_SYMBOL_GPL(devlink_port_unregister);
3948
3949static void __devlink_port_type_set(struct devlink_port *devlink_port,
3950 enum devlink_port_type type,
3951 void *type_dev)
3952{
3953 devlink_port->type = type;
3954 devlink_port->type_dev = type_dev;
3955 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
3956}
3957
3958/**
3959 * devlink_port_type_eth_set - Set port type to Ethernet
3960 *
3961 * @devlink_port: devlink port
3962 * @netdev: related netdevice
3963 */
3964void devlink_port_type_eth_set(struct devlink_port *devlink_port,
3965 struct net_device *netdev)
3966{
3967 return __devlink_port_type_set(devlink_port,
3968 DEVLINK_PORT_TYPE_ETH, netdev);
3969}
3970EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
3971
3972/**
3973 * devlink_port_type_ib_set - Set port type to InfiniBand
3974 *
3975 * @devlink_port: devlink port
3976 * @ibdev: related IB device
3977 */
3978void devlink_port_type_ib_set(struct devlink_port *devlink_port,
3979 struct ib_device *ibdev)
3980{
3981 return __devlink_port_type_set(devlink_port,
3982 DEVLINK_PORT_TYPE_IB, ibdev);
3983}
3984EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
3985
3986/**
3987 * devlink_port_type_clear - Clear port type
3988 *
3989 * @devlink_port: devlink port
3990 */
3991void devlink_port_type_clear(struct devlink_port *devlink_port)
3992{
3993 return __devlink_port_type_set(devlink_port,
3994 DEVLINK_PORT_TYPE_NOTSET, NULL);
3995}
3996EXPORT_SYMBOL_GPL(devlink_port_type_clear);
3997
3998/**
b9ffcbaf 3999 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 4000 *
4001 * @devlink_port: devlink port
5ec1380a 4002 * @flavour: flavour of the port
b9ffcbaf
JP		 4003 * @port_number: number of the port that is facing user, for example
4004 * the front panel port number
4005 * @split: indicates if this is split port
4006 * @split_subport_number: if the port is split, this is the number
4007 * of subport.
bfcd3a46 4008 */
b9ffcbaf 4009void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 4010 enum devlink_port_flavour flavour,
b9ffcbaf
JP		 4011 u32 port_number, bool split,
4012 u32 split_subport_number)
bfcd3a46 4013{
b9ffcbaf
JP		 4014 struct devlink_port_attrs *attrs = &devlink_port->attrs;
4015
4016 attrs->set = true;
5ec1380a 4017 attrs->flavour = flavour;
b9ffcbaf
JP		 4018 attrs->port_number = port_number;
4019 attrs->split = split;
4020 attrs->split_subport_number = split_subport_number;
bfcd3a46
JP		 4021 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
4022}
b9ffcbaf 4023EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 4024
08474c1a
JP		 4025int devlink_port_get_phys_port_name(struct devlink_port *devlink_port,
4026 char *name, size_t len)
4027{
4028 struct devlink_port_attrs *attrs = &devlink_port->attrs;
4029 int n = 0;
4030
4031 if (!attrs->set)
4032 return -EOPNOTSUPP;
4033
4034 switch (attrs->flavour) {
4035 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
4036 if (!attrs->split)
4037 n = snprintf(name, len, "p%u", attrs->port_number);
4038 else
4039 n = snprintf(name, len, "p%us%u", attrs->port_number,
4040 attrs->split_subport_number);
4041 break;
4042 case DEVLINK_PORT_FLAVOUR_CPU:
4043 case DEVLINK_PORT_FLAVOUR_DSA:
4044 /* As CPU and DSA ports do not have a netdevice associated
4045 * case should not ever happen.
4046 */
4047 WARN_ON(1);
4048 return -EINVAL;
4049 }
4050
4051 if (n >= len)
4052 return -EINVAL;
4053
4054 return 0;
4055}
4056EXPORT_SYMBOL_GPL(devlink_port_get_phys_port_name);
4057
bf797471
JP		 4058int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
4059 u32 size, u16 ingress_pools_count,
4060 u16 egress_pools_count, u16 ingress_tc_count,
4061 u16 egress_tc_count)
4062{
4063 struct devlink_sb *devlink_sb;
4064 int err = 0;
4065
2406e7e5 4066 mutex_lock(&devlink->lock);
bf797471
JP		 4067 if (devlink_sb_index_exists(devlink, sb_index)) {
4068 err = -EEXIST;
4069 goto unlock;
4070 }
4071
4072 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
4073 if (!devlink_sb) {
4074 err = -ENOMEM;
4075 goto unlock;
4076 }
4077 devlink_sb->index = sb_index;
4078 devlink_sb->size = size;
4079 devlink_sb->ingress_pools_count = ingress_pools_count;
4080 devlink_sb->egress_pools_count = egress_pools_count;
4081 devlink_sb->ingress_tc_count = ingress_tc_count;
4082 devlink_sb->egress_tc_count = egress_tc_count;
4083 list_add_tail(&devlink_sb->list, &devlink->sb_list);
4084unlock:
2406e7e5 4085 mutex_unlock(&devlink->lock);
bf797471
JP		 4086 return err;
4087}
4088EXPORT_SYMBOL_GPL(devlink_sb_register);
4089
4090void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
4091{
4092 struct devlink_sb *devlink_sb;
4093
2406e7e5 4094 mutex_lock(&devlink->lock);
bf797471
JP		 4095 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
4096 WARN_ON(!devlink_sb);
4097 list_del(&devlink_sb->list);
2406e7e5 4098 mutex_unlock(&devlink->lock);
bf797471
JP		 4099 kfree(devlink_sb);
4100}
4101EXPORT_SYMBOL_GPL(devlink_sb_unregister);
4102
1555d204
AS		 4103/**
4104 * devlink_dpipe_headers_register - register dpipe headers
4105 *
4106 * @devlink: devlink
4107 * @dpipe_headers: dpipe header array
4108 *
4109 * Register the headers supported by hardware.
4110 */
4111int devlink_dpipe_headers_register(struct devlink *devlink,
4112 struct devlink_dpipe_headers *dpipe_headers)
4113{
2406e7e5 4114 mutex_lock(&devlink->lock);
1555d204 4115 devlink->dpipe_headers = dpipe_headers;
2406e7e5 4116 mutex_unlock(&devlink->lock);
1555d204
AS		 4117 return 0;
4118}
4119EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
4120
4121/**
4122 * devlink_dpipe_headers_unregister - unregister dpipe headers
4123 *
4124 * @devlink: devlink
4125 *
4126 * Unregister the headers supported by hardware.
4127 */
4128void devlink_dpipe_headers_unregister(struct devlink *devlink)
4129{
2406e7e5 4130 mutex_lock(&devlink->lock);
1555d204 4131 devlink->dpipe_headers = NULL;
2406e7e5 4132 mutex_unlock(&devlink->lock);
1555d204
AS		 4133}
4134EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
4135
4136/**
4137 * devlink_dpipe_table_counter_enabled - check if counter allocation
4138 * required
4139 * @devlink: devlink
4140 * @table_name: tables name
4141 *
4142 * Used by driver to check if counter allocation is required.
4143 * After counter allocation is turned on the table entries
4144 * are updated to include counter statistics.
4145 *
4146 * After that point on the driver must respect the counter
4147 * state so that each entry added to the table is added
4148 * with a counter.
4149 */
4150bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
4151 const char *table_name)
4152{
4153 struct devlink_dpipe_table *table;
4154 bool enabled;
4155
4156 rcu_read_lock();
4157 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
4158 table_name);
4159 enabled = false;
4160 if (table)
4161 enabled = table->counters_enabled;
4162 rcu_read_unlock();
4163 return enabled;
4164}
4165EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
4166
4167/**
4168 * devlink_dpipe_table_register - register dpipe table
4169 *
4170 * @devlink: devlink
4171 * @table_name: table name
4172 * @table_ops: table ops
4173 * @priv: priv
1555d204
AS		 4174 * @counter_control_extern: external control for counters
4175 */
4176int devlink_dpipe_table_register(struct devlink *devlink,
4177 const char *table_name,
4178 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 4179 void *priv, bool counter_control_extern)
1555d204
AS		 4180{
4181 struct devlink_dpipe_table *table;
4182
4183 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
4184 return -EEXIST;
4185
ffd3cdcc
AS		 4186 if (WARN_ON(!table_ops->size_get))
4187 return -EINVAL;
4188
1555d204
AS		 4189 table = kzalloc(sizeof(*table), GFP_KERNEL);
4190 if (!table)
4191 return -ENOMEM;
4192
4193 table->name = table_name;
4194 table->table_ops = table_ops;
4195 table->priv = priv;
1555d204
AS		 4196 table->counter_control_extern = counter_control_extern;
4197
2406e7e5 4198 mutex_lock(&devlink->lock);
1555d204 4199 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
2406e7e5 4200 mutex_unlock(&devlink->lock);
1555d204
AS		 4201 return 0;
4202}
4203EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
4204
4205/**
4206 * devlink_dpipe_table_unregister - unregister dpipe table
4207 *
4208 * @devlink: devlink
4209 * @table_name: table name
4210 */
4211void devlink_dpipe_table_unregister(struct devlink *devlink,
4212 const char *table_name)
4213{
4214 struct devlink_dpipe_table *table;
4215
2406e7e5 4216 mutex_lock(&devlink->lock);
1555d204
AS		 4217 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
4218 table_name);
4219 if (!table)
4220 goto unlock;
4221 list_del_rcu(&table->list);
2406e7e5 4222 mutex_unlock(&devlink->lock);
1555d204
AS		 4223 kfree_rcu(table, rcu);
4224 return;
4225unlock:
2406e7e5 4226 mutex_unlock(&devlink->lock);
1555d204
AS		 4227}
4228EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
4229
d9f9b9a4
AS		 4230/**
4231 * devlink_resource_register - devlink resource register
4232 *
4233 * @devlink: devlink
4234 * @resource_name: resource's name
4235 * @top_hierarchy: top hierarchy
4236 * @reload_required: reload is required for new configuration to
4237 * apply
4238 * @resource_size: resource's size
4239 * @resource_id: resource's id
4240 * @parent_reosurce_id: resource's parent id
4241 * @size params: size parameters
d9f9b9a4
AS		 4242 */
4243int devlink_resource_register(struct devlink *devlink,
4244 const char *resource_name,
d9f9b9a4
AS		 4245 u64 resource_size,
4246 u64 resource_id,
4247 u64 parent_resource_id,
fc56be47 4248 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 4249{
4250 struct devlink_resource *resource;
4251 struct list_head *resource_list;
14530746 4252 bool top_hierarchy;
d9f9b9a4
AS		 4253 int err = 0;
4254
14530746
DA		 4255 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
4256
d9f9b9a4
AS		 4257 mutex_lock(&devlink->lock);
4258 resource = devlink_resource_find(devlink, NULL, resource_id);
4259 if (resource) {
4260 err = -EINVAL;
4261 goto out;
4262 }
4263
4264 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
4265 if (!resource) {
4266 err = -ENOMEM;
4267 goto out;
4268 }
4269
4270 if (top_hierarchy) {
4271 resource_list = &devlink->resource_list;
4272 } else {
4273 struct devlink_resource *parent_resource;
4274
4275 parent_resource = devlink_resource_find(devlink, NULL,
4276 parent_resource_id);
4277 if (parent_resource) {
4278 resource_list = &parent_resource->resource_list;
4279 resource->parent = parent_resource;
4280 } else {
b75703de 4281 kfree(resource);
d9f9b9a4
AS		 4282 err = -EINVAL;
4283 goto out;
4284 }
4285 }
4286
4287 resource->name = resource_name;
4288 resource->size = resource_size;
4289 resource->size_new = resource_size;
4290 resource->id = resource_id;
d9f9b9a4 4291 resource->size_valid = true;
77d27096
JP		 4292 memcpy(&resource->size_params, size_params,
4293 sizeof(resource->size_params));
d9f9b9a4
AS		 4294 INIT_LIST_HEAD(&resource->resource_list);
4295 list_add_tail(&resource->list, resource_list);
4296out:
4297 mutex_unlock(&devlink->lock);
4298 return err;
4299}
4300EXPORT_SYMBOL_GPL(devlink_resource_register);
4301
4302/**
4303 * devlink_resources_unregister - free all resources
4304 *
4305 * @devlink: devlink
4306 * @resource: resource
4307 */
4308void devlink_resources_unregister(struct devlink *devlink,
4309 struct devlink_resource *resource)
4310{
4311 struct devlink_resource *tmp, *child_resource;
4312 struct list_head *resource_list;
4313
4314 if (resource)
4315 resource_list = &resource->resource_list;
4316 else
4317 resource_list = &devlink->resource_list;
4318
4319 if (!resource)
4320 mutex_lock(&devlink->lock);
4321
4322 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
4323 devlink_resources_unregister(devlink, child_resource);
4324 list_del(&child_resource->list);
4325 kfree(child_resource);
4326 }
4327
4328 if (!resource)
4329 mutex_unlock(&devlink->lock);
4330}
4331EXPORT_SYMBOL_GPL(devlink_resources_unregister);
4332
4333/**
4334 * devlink_resource_size_get - get and update size
4335 *
4336 * @devlink: devlink
4337 * @resource_id: the requested resource id
4338 * @p_resource_size: ptr to update
4339 */
4340int devlink_resource_size_get(struct devlink *devlink,
4341 u64 resource_id,
4342 u64 *p_resource_size)
4343{
4344 struct devlink_resource *resource;
4345 int err = 0;
4346
4347 mutex_lock(&devlink->lock);
4348 resource = devlink_resource_find(devlink, NULL, resource_id);
4349 if (!resource) {
4350 err = -EINVAL;
4351 goto out;
4352 }
4353 *p_resource_size = resource->size_new;
4354 resource->size = resource->size_new;
4355out:
4356 mutex_unlock(&devlink->lock);
4357 return err;
4358}
4359EXPORT_SYMBOL_GPL(devlink_resource_size_get);
4360
56dc7cd0
AS		 4361/**
4362 * devlink_dpipe_table_resource_set - set the resource id
4363 *
4364 * @devlink: devlink
4365 * @table_name: table name
4366 * @resource_id: resource id
4367 * @resource_units: number of resource's units consumed per table's entry
4368 */
4369int devlink_dpipe_table_resource_set(struct devlink *devlink,
4370 const char *table_name, u64 resource_id,
4371 u64 resource_units)
4372{
4373 struct devlink_dpipe_table *table;
4374 int err = 0;
4375
4376 mutex_lock(&devlink->lock);
4377 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
4378 table_name);
4379 if (!table) {
4380 err = -EINVAL;
4381 goto out;
4382 }
4383 table->resource_id = resource_id;
4384 table->resource_units = resource_units;
4385 table->resource_valid = true;
4386out:
4387 mutex_unlock(&devlink->lock);
4388 return err;
4389}
4390EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
4391
fc56be47
JP		 4392/**
4393 * devlink_resource_occ_get_register - register occupancy getter
4394 *
4395 * @devlink: devlink
4396 * @resource_id: resource id
4397 * @occ_get: occupancy getter callback
4398 * @occ_get_priv: occupancy getter callback priv
4399 */
4400void devlink_resource_occ_get_register(struct devlink *devlink,
4401 u64 resource_id,
4402 devlink_resource_occ_get_t *occ_get,
4403 void *occ_get_priv)
4404{
4405 struct devlink_resource *resource;
4406
4407 mutex_lock(&devlink->lock);
4408 resource = devlink_resource_find(devlink, NULL, resource_id);
4409 if (WARN_ON(!resource))
4410 goto out;
4411 WARN_ON(resource->occ_get);
4412
4413 resource->occ_get = occ_get;
4414 resource->occ_get_priv = occ_get_priv;
4415out:
4416 mutex_unlock(&devlink->lock);
4417}
4418EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
4419
4420/**
4421 * devlink_resource_occ_get_unregister - unregister occupancy getter
4422 *
4423 * @devlink: devlink
4424 * @resource_id: resource id
4425 */
4426void devlink_resource_occ_get_unregister(struct devlink *devlink,
4427 u64 resource_id)
4428{
4429 struct devlink_resource *resource;
4430
4431 mutex_lock(&devlink->lock);
4432 resource = devlink_resource_find(devlink, NULL, resource_id);
4433 if (WARN_ON(!resource))
4434 goto out;
4435 WARN_ON(!resource->occ_get);
4436
4437 resource->occ_get = NULL;
4438 resource->occ_get_priv = NULL;
4439out:
4440 mutex_unlock(&devlink->lock);
4441}
4442EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
4443
eabaef18
MS		 4444/**
4445 * devlink_params_register - register configuration parameters
4446 *
4447 * @devlink: devlink
4448 * @params: configuration parameters array
4449 * @params_count: number of parameters provided
4450 *
4451 * Register the configuration parameters supported by the driver.
4452 */
4453int devlink_params_register(struct devlink *devlink,
4454 const struct devlink_param *params,
4455 size_t params_count)
4456{
4457 const struct devlink_param *param = params;
4458 int i;
4459 int err;
4460
4461 mutex_lock(&devlink->lock);
4462 for (i = 0; i < params_count; i++, param++) {
4463 if (!param || !param->name || !param->supported_cmodes) {
4464 err = -EINVAL;
4465 goto rollback;
4466 }
4467 if (param->generic) {
4468 err = devlink_param_generic_verify(param);
4469 if (err)
4470 goto rollback;
4471 } else {
4472 err = devlink_param_driver_verify(param);
4473 if (err)
4474 goto rollback;
4475 }
4476 err = devlink_param_register_one(devlink, param);
4477 if (err)
4478 goto rollback;
4479 }
4480
4481 mutex_unlock(&devlink->lock);
4482 return 0;
4483
4484rollback:
4485 if (!i)
4486 goto unlock;
4487 for (param--; i > 0; i--, param--)
4488 devlink_param_unregister_one(devlink, param);
4489unlock:
4490 mutex_unlock(&devlink->lock);
4491 return err;
4492}
4493EXPORT_SYMBOL_GPL(devlink_params_register);
4494
4495/**
4496 * devlink_params_unregister - unregister configuration parameters
4497 * @devlink: devlink
4498 * @params: configuration parameters to unregister
4499 * @params_count: number of parameters provided
4500 */
4501void devlink_params_unregister(struct devlink *devlink,
4502 const struct devlink_param *params,
4503 size_t params_count)
4504{
4505 const struct devlink_param *param = params;
4506 int i;
4507
4508 mutex_lock(&devlink->lock);
4509 for (i = 0; i < params_count; i++, param++)
4510 devlink_param_unregister_one(devlink, param);
4511 mutex_unlock(&devlink->lock);
4512}
4513EXPORT_SYMBOL_GPL(devlink_params_unregister);
4514
ec01aeb1
MS		 4515/**
4516 * devlink_param_driverinit_value_get - get configuration parameter
4517 * value for driver initializing
4518 *
4519 * @devlink: devlink
4520 * @param_id: parameter ID
4521 * @init_val: value of parameter in driverinit configuration mode
4522 *
4523 * This function should be used by the driver to get driverinit
4524 * configuration for initialization after reload command.
4525 */
4526int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
4527 union devlink_param_value *init_val)
4528{
4529 struct devlink_param_item *param_item;
4530
4531 if (!devlink->ops || !devlink->ops->reload)
4532 return -EOPNOTSUPP;
4533
4534 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
4535 if (!param_item)
4536 return -EINVAL;
4537
4538 if (!param_item->driverinit_value_valid ||
4539 !devlink_param_cmode_is_supported(param_item->param,
4540 DEVLINK_PARAM_CMODE_DRIVERINIT))
4541 return -EOPNOTSUPP;
4542
4543 *init_val = param_item->driverinit_value;
4544
4545 return 0;
4546}
4547EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
4548
4549/**
4550 * devlink_param_driverinit_value_set - set value of configuration
4551 * parameter for driverinit
4552 * configuration mode
4553 *
4554 * @devlink: devlink
4555 * @param_id: parameter ID
4556 * @init_val: value of parameter to set for driverinit configuration mode
4557 *
4558 * This function should be used by the driver to set driverinit
4559 * configuration mode default value.
4560 */
4561int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
4562 union devlink_param_value init_val)
4563{
4564 struct devlink_param_item *param_item;
4565
4566 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
4567 if (!param_item)
4568 return -EINVAL;
4569
4570 if (!devlink_param_cmode_is_supported(param_item->param,
4571 DEVLINK_PARAM_CMODE_DRIVERINIT))
4572 return -EOPNOTSUPP;
4573
4574 param_item->driverinit_value = init_val;
4575 param_item->driverinit_value_valid = true;
4576
ea601e17 4577 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 4578 return 0;
4579}
4580EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
4581
ea601e17
MS		 4582/**
4583 * devlink_param_value_changed - notify devlink on a parameter's value
4584 * change. Should be called by the driver
4585 * right after the change.
4586 *
4587 * @devlink: devlink
4588 * @param_id: parameter ID
4589 *
4590 * This function should be used by the driver to notify devlink on value
4591 * change, excluding driverinit configuration mode.
4592 * For driverinit configuration mode driver should use the function
4593 * devlink_param_driverinit_value_set() instead.
4594 */
4595void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
4596{
4597 struct devlink_param_item *param_item;
4598
4599 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
4600 WARN_ON(!param_item);
4601
4602 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
4603}
4604EXPORT_SYMBOL_GPL(devlink_param_value_changed);
4605
b16ebe92
AV		 4606/**
4607 * devlink_region_create - create a new address region
4608 *
4609 * @devlink: devlink
4610 * @region_name: region name
4611 * @region_max_snapshots: Maximum supported number of snapshots for region
4612 * @region_size: size of region
4613 */
4614struct devlink_region *devlink_region_create(struct devlink *devlink,
4615 const char *region_name,
4616 u32 region_max_snapshots,
4617 u64 region_size)
4618{
4619 struct devlink_region *region;
4620 int err = 0;
4621
4622 mutex_lock(&devlink->lock);
4623
4624 if (devlink_region_get_by_name(devlink, region_name)) {
4625 err = -EEXIST;
4626 goto unlock;
4627 }
4628
4629 region = kzalloc(sizeof(*region), GFP_KERNEL);
4630 if (!region) {
4631 err = -ENOMEM;
4632 goto unlock;
4633 }
4634
4635 region->devlink = devlink;
4636 region->max_snapshots = region_max_snapshots;
4637 region->name = region_name;
4638 region->size = region_size;
4639 INIT_LIST_HEAD(&region->snapshot_list);
4640 list_add_tail(&region->list, &devlink->region_list);
866319bb 4641 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 4642
4643 mutex_unlock(&devlink->lock);
4644 return region;
4645
4646unlock:
4647 mutex_unlock(&devlink->lock);
4648 return ERR_PTR(err);
4649}
4650EXPORT_SYMBOL_GPL(devlink_region_create);
4651
4652/**
4653 * devlink_region_destroy - destroy address region
4654 *
4655 * @region: devlink region to destroy
4656 */
4657void devlink_region_destroy(struct devlink_region *region)
4658{
4659 struct devlink *devlink = region->devlink;
d7e52722 4660 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 4661
4662 mutex_lock(&devlink->lock);
d7e52722
AV		 4663
4664 /* Free all snapshots of region */
4665 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
4666 devlink_region_snapshot_del(snapshot);
4667
b16ebe92 4668 list_del(&region->list);
866319bb
AV		 4669
4670 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 4671 mutex_unlock(&devlink->lock);
4672 kfree(region);
4673}
4674EXPORT_SYMBOL_GPL(devlink_region_destroy);
4675
ccadfa44
AV		 4676/**
4677 * devlink_region_shapshot_id_get - get snapshot ID
4678 *
4679 * This callback should be called when adding a new snapshot,
4680 * Driver should use the same id for multiple snapshots taken
4681 * on multiple regions at the same time/by the same trigger.
4682 *
4683 * @devlink: devlink
4684 */
4685u32 devlink_region_shapshot_id_get(struct devlink *devlink)
4686{
4687 u32 id;
4688
4689 mutex_lock(&devlink->lock);
4690 id = ++devlink->snapshot_id;
4691 mutex_unlock(&devlink->lock);
4692
4693 return id;
4694}
4695EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get);
4696
d7e52722
AV		 4697/**
4698 * devlink_region_snapshot_create - create a new snapshot
4699 * This will add a new snapshot of a region. The snapshot
4700 * will be stored on the region struct and can be accessed
4701 * from devlink. This is useful for future analyses of snapshots.
4702 * Multiple snapshots can be created on a region.
4703 * The @snapshot_id should be obtained using the getter function.
4704 *
4705 * @devlink_region: devlink region of the snapshot
4706 * @data_len: size of snapshot data
4707 * @data: snapshot data
4708 * @snapshot_id: snapshot id to be created
4709 * @data_destructor: pointer to destructor function to free data
4710 */
4711int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len,
4712 u8 *data, u32 snapshot_id,
4713 devlink_snapshot_data_dest_t *data_destructor)
4714{
4715 struct devlink *devlink = region->devlink;
4716 struct devlink_snapshot *snapshot;
4717 int err;
4718
4719 mutex_lock(&devlink->lock);
4720
4721 /* check if region can hold one more snapshot */
4722 if (region->cur_snapshots == region->max_snapshots) {
4723 err = -ENOMEM;
4724 goto unlock;
4725 }
4726
4727 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4728 err = -EEXIST;
4729 goto unlock;
4730 }
4731
4732 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
4733 if (!snapshot) {
4734 err = -ENOMEM;
4735 goto unlock;
4736 }
4737
4738 snapshot->id = snapshot_id;
4739 snapshot->region = region;
4740 snapshot->data = data;
4741 snapshot->data_len = data_len;
4742 snapshot->data_destructor = data_destructor;
4743
4744 list_add_tail(&snapshot->list, &region->snapshot_list);
4745
4746 region->cur_snapshots++;
4747
866319bb 4748 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 4749 mutex_unlock(&devlink->lock);
4750 return 0;
4751
4752unlock:
4753 mutex_unlock(&devlink->lock);
4754 return err;
4755}
4756EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
4757
bfcd3a46
JP		 4758static int __init devlink_module_init(void)
4759{
489111e5 4760 return genl_register_family(&devlink_nl_family);
bfcd3a46
JP		 4761}
4762
4763static void __exit devlink_module_exit(void)
4764{
4765 genl_unregister_family(&devlink_nl_family);
4766}
4767
4768module_init(devlink_module_init);
4769module_exit(devlink_module_exit);
4770
4771MODULE_LICENSE("GPL v2");
4772MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
4773MODULE_DESCRIPTION("Network physical device Netlink interface");
4774MODULE_ALIAS_GENL_FAMILY(DEVLINK_GENL_NAME);
Linux 6.x block layer and io_uring tree(s)