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devlink: Add generic parameter ignore_ari
[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]);
db7ff19e 1629 err = ops->eswitch_mode_set(devlink, mode, info->extack);
59bfde01
RD		 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]);
db7ff19e
EB		 1639 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
1640 info->extack);
59bfde01
RD		 1641 if (err)
1642 return err;
1643 }
f43e9b06
RD		 1644
1645 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1646 if (!ops->eswitch_encap_mode_set)
1647 return -EOPNOTSUPP;
1648 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
db7ff19e
EB		 1649 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
1650 info->extack);
f43e9b06
RD		 1651 if (err)
1652 return err;
1653 }
1654
1555d204
AS		 1655 return 0;
1656}
1657
1658int devlink_dpipe_match_put(struct sk_buff *skb,
1659 struct devlink_dpipe_match *match)
1660{
1661 struct devlink_dpipe_header *header = match->header;
1662 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1663 struct nlattr *match_attr;
1664
1665 match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
1666 if (!match_attr)
1667 return -EMSGSIZE;
1668
1669 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1670 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1671 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1672 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1673 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1674 goto nla_put_failure;
1675
1676 nla_nest_end(skb, match_attr);
1677 return 0;
1678
1679nla_put_failure:
1680 nla_nest_cancel(skb, match_attr);
1681 return -EMSGSIZE;
1682}
1683EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1684
1685static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1686 struct sk_buff *skb)
1687{
1688 struct nlattr *matches_attr;
1689
1690 matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1691 if (!matches_attr)
1692 return -EMSGSIZE;
1693
1694 if (table->table_ops->matches_dump(table->priv, skb))
1695 goto nla_put_failure;
1696
1697 nla_nest_end(skb, matches_attr);
1698 return 0;
1699
1700nla_put_failure:
1701 nla_nest_cancel(skb, matches_attr);
1702 return -EMSGSIZE;
1703}
1704
1705int devlink_dpipe_action_put(struct sk_buff *skb,
1706 struct devlink_dpipe_action *action)
1707{
1708 struct devlink_dpipe_header *header = action->header;
1709 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1710 struct nlattr *action_attr;
1711
1712 action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
1713 if (!action_attr)
1714 return -EMSGSIZE;
1715
1716 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1717 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1718 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1719 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1720 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1721 goto nla_put_failure;
1722
1723 nla_nest_end(skb, action_attr);
1724 return 0;
1725
1726nla_put_failure:
1727 nla_nest_cancel(skb, action_attr);
1728 return -EMSGSIZE;
1729}
1730EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1731
1732static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1733 struct sk_buff *skb)
1734{
1735 struct nlattr *actions_attr;
1736
1737 actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1738 if (!actions_attr)
1739 return -EMSGSIZE;
1740
1741 if (table->table_ops->actions_dump(table->priv, skb))
1742 goto nla_put_failure;
1743
1744 nla_nest_end(skb, actions_attr);
1745 return 0;
1746
1747nla_put_failure:
1748 nla_nest_cancel(skb, actions_attr);
1749 return -EMSGSIZE;
1750}
1751
1752static int devlink_dpipe_table_put(struct sk_buff *skb,
1753 struct devlink_dpipe_table *table)
1754{
1755 struct nlattr *table_attr;
ffd3cdcc 1756 u64 table_size;
1555d204 1757
ffd3cdcc 1758 table_size = table->table_ops->size_get(table->priv);
1555d204
AS		 1759 table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
1760 if (!table_attr)
1761 return -EMSGSIZE;
1762
1763 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 1764 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 1765 DEVLINK_ATTR_PAD))
1766 goto nla_put_failure;
1767 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1768 table->counters_enabled))
1769 goto nla_put_failure;
1770
56dc7cd0 1771 if (table->resource_valid) {
3d18e4f1
AS		 1772 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1773 table->resource_id, DEVLINK_ATTR_PAD) ||
1774 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1775 table->resource_units, DEVLINK_ATTR_PAD))
1776 goto nla_put_failure;
56dc7cd0 1777 }
1555d204
AS		 1778 if (devlink_dpipe_matches_put(table, skb))
1779 goto nla_put_failure;
1780
1781 if (devlink_dpipe_actions_put(table, skb))
1782 goto nla_put_failure;
1783
1784 nla_nest_end(skb, table_attr);
1785 return 0;
1786
1787nla_put_failure:
1788 nla_nest_cancel(skb, table_attr);
1789 return -EMSGSIZE;
1790}
1791
1792static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1793 struct genl_info *info)
1794{
1795 int err;
1796
1797 if (*pskb) {
1798 err = genlmsg_reply(*pskb, info);
1799 if (err)
1800 return err;
1801 }
1802 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1803 if (!*pskb)
1804 return -ENOMEM;
1805 return 0;
1806}
1807
1808static int devlink_dpipe_tables_fill(struct genl_info *info,
1809 enum devlink_command cmd, int flags,
1810 struct list_head *dpipe_tables,
1811 const char *table_name)
1812{
1813 struct devlink *devlink = info->user_ptr[0];
1814 struct devlink_dpipe_table *table;
1815 struct nlattr *tables_attr;
1816 struct sk_buff *skb = NULL;
1817 struct nlmsghdr *nlh;
1818 bool incomplete;
1819 void *hdr;
1820 int i;
1821 int err;
1822
1823 table = list_first_entry(dpipe_tables,
1824 struct devlink_dpipe_table, list);
1825start_again:
1826 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1827 if (err)
1828 return err;
1829
1830 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1831 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 1832 if (!hdr) {
1833 nlmsg_free(skb);
1555d204 1834 return -EMSGSIZE;
6044bd4a 1835 }
1555d204
AS		 1836
1837 if (devlink_nl_put_handle(skb, devlink))
1838 goto nla_put_failure;
1839 tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
1840 if (!tables_attr)
1841 goto nla_put_failure;
1842
1843 i = 0;
1844 incomplete = false;
1845 list_for_each_entry_from(table, dpipe_tables, list) {
1846 if (!table_name) {
1847 err = devlink_dpipe_table_put(skb, table);
1848 if (err) {
1849 if (!i)
1850 goto err_table_put;
1851 incomplete = true;
1852 break;
1853 }
1854 } else {
1855 if (!strcmp(table->name, table_name)) {
1856 err = devlink_dpipe_table_put(skb, table);
1857 if (err)
1858 break;
1859 }
1860 }
1861 i++;
1862 }
1863
1864 nla_nest_end(skb, tables_attr);
1865 genlmsg_end(skb, hdr);
1866 if (incomplete)
1867 goto start_again;
1868
1869send_done:
1870 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1871 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1872 if (!nlh) {
1873 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1874 if (err)
7fe4d6dc 1875 return err;
1555d204
AS		 1876 goto send_done;
1877 }
1878
1879 return genlmsg_reply(skb, info);
1880
1881nla_put_failure:
1882 err = -EMSGSIZE;
1883err_table_put:
1555d204
AS		 1884 nlmsg_free(skb);
1885 return err;
1886}
1887
1888static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1889 struct genl_info *info)
1890{
1891 struct devlink *devlink = info->user_ptr[0];
1892 const char *table_name = NULL;
1893
1894 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1895 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1896
1897 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1898 &devlink->dpipe_table_list,
1899 table_name);
1900}
1901
1902static int devlink_dpipe_value_put(struct sk_buff *skb,
1903 struct devlink_dpipe_value *value)
1904{
1905 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1906 value->value_size, value->value))
1907 return -EMSGSIZE;
1908 if (value->mask)
1909 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1910 value->value_size, value->mask))
1911 return -EMSGSIZE;
1912 if (value->mapping_valid)
1913 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1914 value->mapping_value))
1915 return -EMSGSIZE;
1916 return 0;
1917}
1918
1919static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1920 struct devlink_dpipe_value *value)
1921{
1922 if (!value->action)
1923 return -EINVAL;
1924 if (devlink_dpipe_action_put(skb, value->action))
1925 return -EMSGSIZE;
1926 if (devlink_dpipe_value_put(skb, value))
1927 return -EMSGSIZE;
1928 return 0;
1929}
1930
1931static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1932 struct devlink_dpipe_value *values,
1933 unsigned int values_count)
1934{
1935 struct nlattr *action_attr;
1936 int i;
1937 int err;
1938
1939 for (i = 0; i < values_count; i++) {
1940 action_attr = nla_nest_start(skb,
1941 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1942 if (!action_attr)
1943 return -EMSGSIZE;
1944 err = devlink_dpipe_action_value_put(skb, &values[i]);
1945 if (err)
1946 goto err_action_value_put;
1947 nla_nest_end(skb, action_attr);
1948 }
1949 return 0;
1950
1951err_action_value_put:
1952 nla_nest_cancel(skb, action_attr);
1953 return err;
1954}
1955
1956static int devlink_dpipe_match_value_put(struct sk_buff *skb,
1957 struct devlink_dpipe_value *value)
1958{
1959 if (!value->match)
1960 return -EINVAL;
1961 if (devlink_dpipe_match_put(skb, value->match))
1962 return -EMSGSIZE;
1963 if (devlink_dpipe_value_put(skb, value))
1964 return -EMSGSIZE;
1965 return 0;
1966}
1967
1968static int devlink_dpipe_match_values_put(struct sk_buff *skb,
1969 struct devlink_dpipe_value *values,
1970 unsigned int values_count)
1971{
1972 struct nlattr *match_attr;
1973 int i;
1974 int err;
1975
1976 for (i = 0; i < values_count; i++) {
1977 match_attr = nla_nest_start(skb,
1978 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1979 if (!match_attr)
1980 return -EMSGSIZE;
1981 err = devlink_dpipe_match_value_put(skb, &values[i]);
1982 if (err)
1983 goto err_match_value_put;
1984 nla_nest_end(skb, match_attr);
1985 }
1986 return 0;
1987
1988err_match_value_put:
1989 nla_nest_cancel(skb, match_attr);
1990 return err;
1991}
1992
1993static int devlink_dpipe_entry_put(struct sk_buff *skb,
1994 struct devlink_dpipe_entry *entry)
1995{
1996 struct nlattr *entry_attr, *matches_attr, *actions_attr;
1997 int err;
1998
1999 entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
2000 if (!entry_attr)
2001 return -EMSGSIZE;
2002
2003 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2004 DEVLINK_ATTR_PAD))
2005 goto nla_put_failure;
2006 if (entry->counter_valid)
2007 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2008 entry->counter, DEVLINK_ATTR_PAD))
2009 goto nla_put_failure;
2010
2011 matches_attr = nla_nest_start(skb,
2012 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2013 if (!matches_attr)
2014 goto nla_put_failure;
2015
2016 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2017 entry->match_values_count);
2018 if (err) {
2019 nla_nest_cancel(skb, matches_attr);
2020 goto err_match_values_put;
2021 }
2022 nla_nest_end(skb, matches_attr);
2023
2024 actions_attr = nla_nest_start(skb,
2025 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2026 if (!actions_attr)
2027 goto nla_put_failure;
2028
2029 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2030 entry->action_values_count);
2031 if (err) {
2032 nla_nest_cancel(skb, actions_attr);
2033 goto err_action_values_put;
2034 }
2035 nla_nest_end(skb, actions_attr);
59bfde01 2036
1555d204 2037 nla_nest_end(skb, entry_attr);
59bfde01 2038 return 0;
1555d204
AS		 2039
2040nla_put_failure:
2041 err = -EMSGSIZE;
2042err_match_values_put:
2043err_action_values_put:
2044 nla_nest_cancel(skb, entry_attr);
2045 return err;
2046}
2047
2048static struct devlink_dpipe_table *
2049devlink_dpipe_table_find(struct list_head *dpipe_tables,
2050 const char *table_name)
2051{
2052 struct devlink_dpipe_table *table;
2053
2054 list_for_each_entry_rcu(table, dpipe_tables, list) {
2055 if (!strcmp(table->name, table_name))
2056 return table;
2057 }
2058 return NULL;
2059}
2060
2061int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2062{
2063 struct devlink *devlink;
2064 int err;
2065
2066 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2067 dump_ctx->info);
2068 if (err)
2069 return err;
2070
2071 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2072 dump_ctx->info->snd_portid,
2073 dump_ctx->info->snd_seq,
2074 &devlink_nl_family, NLM_F_MULTI,
2075 dump_ctx->cmd);
2076 if (!dump_ctx->hdr)
2077 goto nla_put_failure;
2078
2079 devlink = dump_ctx->info->user_ptr[0];
2080 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2081 goto nla_put_failure;
2082 dump_ctx->nest = nla_nest_start(dump_ctx->skb,
2083 DEVLINK_ATTR_DPIPE_ENTRIES);
2084 if (!dump_ctx->nest)
2085 goto nla_put_failure;
2086 return 0;
2087
2088nla_put_failure:
1555d204
AS		 2089 nlmsg_free(dump_ctx->skb);
2090 return -EMSGSIZE;
2091}
2092EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2093
2094int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2095 struct devlink_dpipe_entry *entry)
2096{
2097 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2098}
2099EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2100
2101int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2102{
2103 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2104 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2105 return 0;
2106}
2107EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2108
35807324
AS		 2109void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2110
2111{
2112 unsigned int value_count, value_index;
2113 struct devlink_dpipe_value *value;
2114
2115 value = entry->action_values;
2116 value_count = entry->action_values_count;
2117 for (value_index = 0; value_index < value_count; value_index++) {
2118 kfree(value[value_index].value);
2119 kfree(value[value_index].mask);
2120 }
2121
2122 value = entry->match_values;
2123 value_count = entry->match_values_count;
2124 for (value_index = 0; value_index < value_count; value_index++) {
2125 kfree(value[value_index].value);
2126 kfree(value[value_index].mask);
2127 }
2128}
2129EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2130
1555d204
AS		 2131static int devlink_dpipe_entries_fill(struct genl_info *info,
2132 enum devlink_command cmd, int flags,
2133 struct devlink_dpipe_table *table)
2134{
2135 struct devlink_dpipe_dump_ctx dump_ctx;
2136 struct nlmsghdr *nlh;
2137 int err;
2138
2139 dump_ctx.skb = NULL;
2140 dump_ctx.cmd = cmd;
2141 dump_ctx.info = info;
2142
2143 err = table->table_ops->entries_dump(table->priv,
2144 table->counters_enabled,
2145 &dump_ctx);
2146 if (err)
7fe4d6dc 2147 return err;
1555d204
AS		 2148
2149send_done:
2150 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2151 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2152 if (!nlh) {
2153 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2154 if (err)
7fe4d6dc 2155 return err;
1555d204
AS		 2156 goto send_done;
2157 }
2158 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 2159}
2160
2161static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2162 struct genl_info *info)
2163{
2164 struct devlink *devlink = info->user_ptr[0];
2165 struct devlink_dpipe_table *table;
2166 const char *table_name;
2167
2168 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2169 return -EINVAL;
2170
2171 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2172 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2173 table_name);
2174 if (!table)
2175 return -EINVAL;
2176
2177 if (!table->table_ops->entries_dump)
2178 return -EINVAL;
2179
2180 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2181 0, table);
2182}
2183
2184static int devlink_dpipe_fields_put(struct sk_buff *skb,
2185 const struct devlink_dpipe_header *header)
2186{
2187 struct devlink_dpipe_field *field;
2188 struct nlattr *field_attr;
2189 int i;
2190
2191 for (i = 0; i < header->fields_count; i++) {
2192 field = &header->fields[i];
2193 field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
2194 if (!field_attr)
2195 return -EMSGSIZE;
2196 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2197 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2198 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2199 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2200 goto nla_put_failure;
2201 nla_nest_end(skb, field_attr);
2202 }
2203 return 0;
2204
2205nla_put_failure:
2206 nla_nest_cancel(skb, field_attr);
2207 return -EMSGSIZE;
2208}
2209
2210static int devlink_dpipe_header_put(struct sk_buff *skb,
2211 struct devlink_dpipe_header *header)
2212{
2213 struct nlattr *fields_attr, *header_attr;
2214 int err;
2215
2216 header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2217 if (!header_attr)
1555d204
AS		 2218 return -EMSGSIZE;
2219
2220 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2221 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2222 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2223 goto nla_put_failure;
2224
2225 fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2226 if (!fields_attr)
2227 goto nla_put_failure;
2228
2229 err = devlink_dpipe_fields_put(skb, header);
2230 if (err) {
2231 nla_nest_cancel(skb, fields_attr);
2232 goto nla_put_failure;
2233 }
2234 nla_nest_end(skb, fields_attr);
2235 nla_nest_end(skb, header_attr);
2236 return 0;
2237
2238nla_put_failure:
2239 err = -EMSGSIZE;
2240 nla_nest_cancel(skb, header_attr);
2241 return err;
2242}
2243
2244static int devlink_dpipe_headers_fill(struct genl_info *info,
2245 enum devlink_command cmd, int flags,
2246 struct devlink_dpipe_headers *
2247 dpipe_headers)
2248{
2249 struct devlink *devlink = info->user_ptr[0];
2250 struct nlattr *headers_attr;
2251 struct sk_buff *skb = NULL;
2252 struct nlmsghdr *nlh;
2253 void *hdr;
2254 int i, j;
2255 int err;
2256
2257 i = 0;
2258start_again:
2259 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2260 if (err)
2261 return err;
2262
2263 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2264 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2265 if (!hdr) {
2266 nlmsg_free(skb);
1555d204 2267 return -EMSGSIZE;
6044bd4a 2268 }
1555d204
AS		 2269
2270 if (devlink_nl_put_handle(skb, devlink))
2271 goto nla_put_failure;
2272 headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2273 if (!headers_attr)
2274 goto nla_put_failure;
2275
2276 j = 0;
2277 for (; i < dpipe_headers->headers_count; i++) {
2278 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2279 if (err) {
2280 if (!j)
2281 goto err_table_put;
2282 break;
2283 }
2284 j++;
2285 }
2286 nla_nest_end(skb, headers_attr);
2287 genlmsg_end(skb, hdr);
2288 if (i != dpipe_headers->headers_count)
2289 goto start_again;
2290
2291send_done:
2292 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2293 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2294 if (!nlh) {
2295 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2296 if (err)
7fe4d6dc 2297 return err;
1555d204
AS		 2298 goto send_done;
2299 }
2300 return genlmsg_reply(skb, info);
2301
2302nla_put_failure:
2303 err = -EMSGSIZE;
2304err_table_put:
1555d204
AS		 2305 nlmsg_free(skb);
2306 return err;
2307}
2308
2309static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2310 struct genl_info *info)
2311{
2312 struct devlink *devlink = info->user_ptr[0];
2313
2314 if (!devlink->dpipe_headers)
2315 return -EOPNOTSUPP;
2316 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2317 0, devlink->dpipe_headers);
2318}
2319
2320static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2321 const char *table_name,
2322 bool enable)
2323{
2324 struct devlink_dpipe_table *table;
2325
2326 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2327 table_name);
2328 if (!table)
2329 return -EINVAL;
2330
2331 if (table->counter_control_extern)
2332 return -EOPNOTSUPP;
2333
2334 if (!(table->counters_enabled ^ enable))
2335 return 0;
2336
2337 table->counters_enabled = enable;
2338 if (table->table_ops->counters_set_update)
2339 table->table_ops->counters_set_update(table->priv, enable);
2340 return 0;
2341}
2342
2343static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2344 struct genl_info *info)
2345{
2346 struct devlink *devlink = info->user_ptr[0];
2347 const char *table_name;
2348 bool counters_enable;
2349
2350 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2351 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2352 return -EINVAL;
2353
2354 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2355 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2356
2357 return devlink_dpipe_table_counters_set(devlink, table_name,
2358 counters_enable);
08f4b591
OG		 2359}
2360
43dd7512 2361static struct devlink_resource *
d9f9b9a4
AS		 2362devlink_resource_find(struct devlink *devlink,
2363 struct devlink_resource *resource, u64 resource_id)
2364{
2365 struct list_head *resource_list;
2366
2367 if (resource)
2368 resource_list = &resource->resource_list;
2369 else
2370 resource_list = &devlink->resource_list;
2371
2372 list_for_each_entry(resource, resource_list, list) {
2373 struct devlink_resource *child_resource;
2374
2375 if (resource->id == resource_id)
2376 return resource;
2377
2378 child_resource = devlink_resource_find(devlink, resource,
2379 resource_id);
2380 if (child_resource)
2381 return child_resource;
2382 }
2383 return NULL;
2384}
2385
43dd7512
WY		 2386static void
2387devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 2388{
2389 struct devlink_resource *child_resource;
2390 bool size_valid = true;
2391 u64 parts_size = 0;
2392
2393 if (list_empty(&resource->resource_list))
2394 goto out;
2395
2396 list_for_each_entry(child_resource, &resource->resource_list, list)
2397 parts_size += child_resource->size_new;
2398
b9d17175 2399 if (parts_size > resource->size_new)
d9f9b9a4
AS		 2400 size_valid = false;
2401out:
2402 resource->size_valid = size_valid;
2403}
2404
cc944ead
AS		 2405static int
2406devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2407 struct netlink_ext_ack *extack)
2408{
2409 u64 reminder;
2410 int err = 0;
2411
0f3e9c97 2412 if (size > resource->size_params.size_max) {
cc944ead
AS		 2413 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2414 err = -EINVAL;
2415 }
2416
0f3e9c97 2417 if (size < resource->size_params.size_min) {
cc944ead
AS		 2418 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2419 err = -EINVAL;
2420 }
2421
0f3e9c97 2422 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 2423 if (reminder) {
2424 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2425 err = -EINVAL;
2426 }
2427
2428 return err;
2429}
2430
d9f9b9a4
AS		 2431static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2432 struct genl_info *info)
2433{
2434 struct devlink *devlink = info->user_ptr[0];
2435 struct devlink_resource *resource;
2436 u64 resource_id;
2437 u64 size;
2438 int err;
2439
2440 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2441 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2442 return -EINVAL;
2443 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2444
2445 resource = devlink_resource_find(devlink, NULL, resource_id);
2446 if (!resource)
2447 return -EINVAL;
2448
d9f9b9a4 2449 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 2450 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 2451 if (err)
2452 return err;
2453
2454 resource->size_new = size;
2455 devlink_resource_validate_children(resource);
2456 if (resource->parent)
2457 devlink_resource_validate_children(resource->parent);
2458 return 0;
2459}
2460
3d18e4f1 2461static int
d9f9b9a4
AS		 2462devlink_resource_size_params_put(struct devlink_resource *resource,
2463 struct sk_buff *skb)
2464{
2465 struct devlink_resource_size_params *size_params;
2466
77d27096 2467 size_params = &resource->size_params;
3d18e4f1
AS		 2468 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2469 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2470 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2471 size_params->size_max, DEVLINK_ATTR_PAD) ||
2472 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2473 size_params->size_min, DEVLINK_ATTR_PAD) ||
2474 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2475 return -EMSGSIZE;
2476 return 0;
d9f9b9a4
AS		 2477}
2478
fc56be47
JP		 2479static int devlink_resource_occ_put(struct devlink_resource *resource,
2480 struct sk_buff *skb)
2481{
2482 if (!resource->occ_get)
2483 return 0;
2484 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2485 resource->occ_get(resource->occ_get_priv),
2486 DEVLINK_ATTR_PAD);
2487}
2488
d9f9b9a4
AS		 2489static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2490 struct devlink_resource *resource)
2491{
2492 struct devlink_resource *child_resource;
2493 struct nlattr *child_resource_attr;
2494 struct nlattr *resource_attr;
2495
2496 resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE);
2497 if (!resource_attr)
2498 return -EMSGSIZE;
2499
2500 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2501 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2502 DEVLINK_ATTR_PAD) ||
2503 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2504 DEVLINK_ATTR_PAD))
2505 goto nla_put_failure;
2506 if (resource->size != resource->size_new)
2507 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2508 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 2509 if (devlink_resource_occ_put(resource, skb))
2510 goto nla_put_failure;
3d18e4f1
AS		 2511 if (devlink_resource_size_params_put(resource, skb))
2512 goto nla_put_failure;
d9f9b9a4
AS		 2513 if (list_empty(&resource->resource_list))
2514 goto out;
2515
2516 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2517 resource->size_valid))
2518 goto nla_put_failure;
2519
2520 child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2521 if (!child_resource_attr)
2522 goto nla_put_failure;
2523
2524 list_for_each_entry(child_resource, &resource->resource_list, list) {
2525 if (devlink_resource_put(devlink, skb, child_resource))
2526 goto resource_put_failure;
2527 }
2528
2529 nla_nest_end(skb, child_resource_attr);
2530out:
2531 nla_nest_end(skb, resource_attr);
2532 return 0;
2533
2534resource_put_failure:
2535 nla_nest_cancel(skb, child_resource_attr);
2536nla_put_failure:
2537 nla_nest_cancel(skb, resource_attr);
2538 return -EMSGSIZE;
2539}
2540
2541static int devlink_resource_fill(struct genl_info *info,
2542 enum devlink_command cmd, int flags)
2543{
2544 struct devlink *devlink = info->user_ptr[0];
2545 struct devlink_resource *resource;
2546 struct nlattr *resources_attr;
2547 struct sk_buff *skb = NULL;
2548 struct nlmsghdr *nlh;
2549 bool incomplete;
2550 void *hdr;
2551 int i;
2552 int err;
2553
2554 resource = list_first_entry(&devlink->resource_list,
2555 struct devlink_resource, list);
2556start_again:
2557 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2558 if (err)
2559 return err;
2560
2561 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2562 &devlink_nl_family, NLM_F_MULTI, cmd);
2563 if (!hdr) {
2564 nlmsg_free(skb);
2565 return -EMSGSIZE;
2566 }
2567
2568 if (devlink_nl_put_handle(skb, devlink))
2569 goto nla_put_failure;
2570
2571 resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2572 if (!resources_attr)
2573 goto nla_put_failure;
2574
2575 incomplete = false;
2576 i = 0;
2577 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2578 err = devlink_resource_put(devlink, skb, resource);
2579 if (err) {
2580 if (!i)
2581 goto err_resource_put;
2582 incomplete = true;
2583 break;
2584 }
2585 i++;
2586 }
2587 nla_nest_end(skb, resources_attr);
2588 genlmsg_end(skb, hdr);
2589 if (incomplete)
2590 goto start_again;
2591send_done:
2592 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2593 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2594 if (!nlh) {
2595 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2596 if (err)
83fe9a96 2597 return err;
d9f9b9a4
AS		 2598 goto send_done;
2599 }
2600 return genlmsg_reply(skb, info);
2601
2602nla_put_failure:
2603 err = -EMSGSIZE;
2604err_resource_put:
d9f9b9a4
AS		 2605 nlmsg_free(skb);
2606 return err;
2607}
2608
2609static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2610 struct genl_info *info)
2611{
2612 struct devlink *devlink = info->user_ptr[0];
2613
2614 if (list_empty(&devlink->resource_list))
2615 return -EOPNOTSUPP;
2616
2617 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2618}
2619
2d8dc5bb
AS		 2620static int
2621devlink_resources_validate(struct devlink *devlink,
2622 struct devlink_resource *resource,
2623 struct genl_info *info)
2624{
2625 struct list_head *resource_list;
2626 int err = 0;
2627
2628 if (resource)
2629 resource_list = &resource->resource_list;
2630 else
2631 resource_list = &devlink->resource_list;
2632
2633 list_for_each_entry(resource, resource_list, list) {
2634 if (!resource->size_valid)
2635 return -EINVAL;
2636 err = devlink_resources_validate(devlink, resource, info);
2637 if (err)
2638 return err;
2639 }
2640 return err;
2641}
2642
2643static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2644{
2645 struct devlink *devlink = info->user_ptr[0];
2646 int err;
2647
2648 if (!devlink->ops->reload)
2649 return -EOPNOTSUPP;
2650
2651 err = devlink_resources_validate(devlink, NULL, info);
2652 if (err) {
2653 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2654 return err;
2655 }
ac0fc8a1 2656 return devlink->ops->reload(devlink, info->extack);
2d8dc5bb
AS		 2657}
2658
036467c3
MS		 2659static const struct devlink_param devlink_param_generic[] = {
2660 {
2661 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2662 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2663 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2664 },
2665 {
2666 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2667 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2668 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2669 },
f567bcda
VV		 2670 {
2671 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2672 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2673 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2674 },
f6a69885
AV		 2675 {
2676 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2677 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2678 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2679 },
e3b51061
VV		 2680 {
2681 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2682 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2683 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2684 },
036467c3 2685};
eabaef18
MS		 2686
2687static int devlink_param_generic_verify(const struct devlink_param *param)
2688{
2689 /* verify it match generic parameter by id and name */
2690 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
2691 return -EINVAL;
2692 if (strcmp(param->name, devlink_param_generic[param->id].name))
2693 return -ENOENT;
2694
2695 WARN_ON(param->type != devlink_param_generic[param->id].type);
2696
2697 return 0;
2698}
2699
2700static int devlink_param_driver_verify(const struct devlink_param *param)
2701{
2702 int i;
2703
2704 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
2705 return -EINVAL;
2706 /* verify no such name in generic params */
2707 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
2708 if (!strcmp(param->name, devlink_param_generic[i].name))
2709 return -EEXIST;
2710
2711 return 0;
2712}
2713
2714static struct devlink_param_item *
2715devlink_param_find_by_name(struct list_head *param_list,
2716 const char *param_name)
2717{
2718 struct devlink_param_item *param_item;
2719
2720 list_for_each_entry(param_item, param_list, list)
2721 if (!strcmp(param_item->param->name, param_name))
2722 return param_item;
2723 return NULL;
2724}
2725
ec01aeb1
MS		 2726static struct devlink_param_item *
2727devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
2728{
2729 struct devlink_param_item *param_item;
2730
2731 list_for_each_entry(param_item, param_list, list)
2732 if (param_item->param->id == param_id)
2733 return param_item;
2734 return NULL;
2735}
2736
45f05def
MS		 2737static bool
2738devlink_param_cmode_is_supported(const struct devlink_param *param,
2739 enum devlink_param_cmode cmode)
2740{
2741 return test_bit(cmode, &param->supported_cmodes);
2742}
2743
2744static int devlink_param_get(struct devlink *devlink,
2745 const struct devlink_param *param,
2746 struct devlink_param_gset_ctx *ctx)
2747{
2748 if (!param->get)
2749 return -EOPNOTSUPP;
2750 return param->get(devlink, param->id, ctx);
2751}
2752
e3b7ca18
MS		 2753static int devlink_param_set(struct devlink *devlink,
2754 const struct devlink_param *param,
2755 struct devlink_param_gset_ctx *ctx)
2756{
2757 if (!param->set)
2758 return -EOPNOTSUPP;
2759 return param->set(devlink, param->id, ctx);
2760}
2761
45f05def
MS		 2762static int
2763devlink_param_type_to_nla_type(enum devlink_param_type param_type)
2764{
2765 switch (param_type) {
2766 case DEVLINK_PARAM_TYPE_U8:
2767 return NLA_U8;
2768 case DEVLINK_PARAM_TYPE_U16:
2769 return NLA_U16;
2770 case DEVLINK_PARAM_TYPE_U32:
2771 return NLA_U32;
2772 case DEVLINK_PARAM_TYPE_STRING:
2773 return NLA_STRING;
2774 case DEVLINK_PARAM_TYPE_BOOL:
2775 return NLA_FLAG;
2776 default:
2777 return -EINVAL;
2778 }
2779}
2780
2781static int
2782devlink_nl_param_value_fill_one(struct sk_buff *msg,
2783 enum devlink_param_type type,
2784 enum devlink_param_cmode cmode,
2785 union devlink_param_value val)
2786{
2787 struct nlattr *param_value_attr;
2788
2789 param_value_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUE);
2790 if (!param_value_attr)
2791 goto nla_put_failure;
2792
2793 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
2794 goto value_nest_cancel;
2795
2796 switch (type) {
2797 case DEVLINK_PARAM_TYPE_U8:
2798 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
2799 goto value_nest_cancel;
2800 break;
2801 case DEVLINK_PARAM_TYPE_U16:
2802 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
2803 goto value_nest_cancel;
2804 break;
2805 case DEVLINK_PARAM_TYPE_U32:
2806 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
2807 goto value_nest_cancel;
2808 break;
2809 case DEVLINK_PARAM_TYPE_STRING:
2810 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
2811 val.vstr))
2812 goto value_nest_cancel;
2813 break;
2814 case DEVLINK_PARAM_TYPE_BOOL:
2815 if (val.vbool &&
2816 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
2817 goto value_nest_cancel;
2818 break;
2819 }
2820
2821 nla_nest_end(msg, param_value_attr);
2822 return 0;
2823
2824value_nest_cancel:
2825 nla_nest_cancel(msg, param_value_attr);
2826nla_put_failure:
2827 return -EMSGSIZE;
2828}
2829
2830static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
2831 struct devlink_param_item *param_item,
2832 enum devlink_command cmd,
2833 u32 portid, u32 seq, int flags)
2834{
2835 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
2836 const struct devlink_param *param = param_item->param;
2837 struct devlink_param_gset_ctx ctx;
2838 struct nlattr *param_values_list;
2839 struct nlattr *param_attr;
2840 int nla_type;
2841 void *hdr;
2842 int err;
2843 int i;
2844
2845 /* Get value from driver part to driverinit configuration mode */
2846 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
2847 if (!devlink_param_cmode_is_supported(param, i))
2848 continue;
2849 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
2850 if (!param_item->driverinit_value_valid)
2851 return -EOPNOTSUPP;
2852 param_value[i] = param_item->driverinit_value;
2853 } else {
2854 ctx.cmode = i;
2855 err = devlink_param_get(devlink, param, &ctx);
2856 if (err)
2857 return err;
2858 param_value[i] = ctx.val;
2859 }
2860 }
2861
2862 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2863 if (!hdr)
2864 return -EMSGSIZE;
2865
2866 if (devlink_nl_put_handle(msg, devlink))
2867 goto genlmsg_cancel;
2868 param_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM);
2869 if (!param_attr)
2870 goto genlmsg_cancel;
2871 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
2872 goto param_nest_cancel;
2873 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
2874 goto param_nest_cancel;
2875
2876 nla_type = devlink_param_type_to_nla_type(param->type);
2877 if (nla_type < 0)
2878 goto param_nest_cancel;
2879 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
2880 goto param_nest_cancel;
2881
2882 param_values_list = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUES_LIST);
2883 if (!param_values_list)
2884 goto param_nest_cancel;
2885
2886 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
2887 if (!devlink_param_cmode_is_supported(param, i))
2888 continue;
2889 err = devlink_nl_param_value_fill_one(msg, param->type,
2890 i, param_value[i]);
2891 if (err)
2892 goto values_list_nest_cancel;
2893 }
2894
2895 nla_nest_end(msg, param_values_list);
2896 nla_nest_end(msg, param_attr);
2897 genlmsg_end(msg, hdr);
2898 return 0;
2899
2900values_list_nest_cancel:
2901 nla_nest_end(msg, param_values_list);
2902param_nest_cancel:
2903 nla_nest_cancel(msg, param_attr);
2904genlmsg_cancel:
2905 genlmsg_cancel(msg, hdr);
2906 return -EMSGSIZE;
2907}
2908
ea601e17
MS		 2909static void devlink_param_notify(struct devlink *devlink,
2910 struct devlink_param_item *param_item,
2911 enum devlink_command cmd)
2912{
2913 struct sk_buff *msg;
2914 int err;
2915
2916 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL);
2917
2918 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2919 if (!msg)
2920 return;
2921 err = devlink_nl_param_fill(msg, devlink, param_item, cmd, 0, 0, 0);
2922 if (err) {
2923 nlmsg_free(msg);
2924 return;
2925 }
2926
2927 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2928 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2929}
2930
45f05def
MS		 2931static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
2932 struct netlink_callback *cb)
2933{
2934 struct devlink_param_item *param_item;
2935 struct devlink *devlink;
2936 int start = cb->args[0];
2937 int idx = 0;
2938 int err;
2939
2940 mutex_lock(&devlink_mutex);
2941 list_for_each_entry(devlink, &devlink_list, list) {
2942 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
2943 continue;
2944 mutex_lock(&devlink->lock);
2945 list_for_each_entry(param_item, &devlink->param_list, list) {
2946 if (idx < start) {
2947 idx++;
2948 continue;
2949 }
2950 err = devlink_nl_param_fill(msg, devlink, param_item,
2951 DEVLINK_CMD_PARAM_GET,
2952 NETLINK_CB(cb->skb).portid,
2953 cb->nlh->nlmsg_seq,
2954 NLM_F_MULTI);
2955 if (err) {
2956 mutex_unlock(&devlink->lock);
2957 goto out;
2958 }
2959 idx++;
2960 }
2961 mutex_unlock(&devlink->lock);
2962 }
2963out:
2964 mutex_unlock(&devlink_mutex);
2965
2966 cb->args[0] = idx;
2967 return msg->len;
2968}
2969
e3b7ca18
MS		 2970static int
2971devlink_param_type_get_from_info(struct genl_info *info,
2972 enum devlink_param_type *param_type)
2973{
2974 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
2975 return -EINVAL;
2976
2977 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
2978 case NLA_U8:
2979 *param_type = DEVLINK_PARAM_TYPE_U8;
2980 break;
2981 case NLA_U16:
2982 *param_type = DEVLINK_PARAM_TYPE_U16;
2983 break;
2984 case NLA_U32:
2985 *param_type = DEVLINK_PARAM_TYPE_U32;
2986 break;
2987 case NLA_STRING:
2988 *param_type = DEVLINK_PARAM_TYPE_STRING;
2989 break;
2990 case NLA_FLAG:
2991 *param_type = DEVLINK_PARAM_TYPE_BOOL;
2992 break;
2993 default:
2994 return -EINVAL;
2995 }
2996
2997 return 0;
2998}
2999
3000static int
3001devlink_param_value_get_from_info(const struct devlink_param *param,
3002 struct genl_info *info,
3003 union devlink_param_value *value)
3004{
3005 if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
3006 !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
3007 return -EINVAL;
3008
3009 switch (param->type) {
3010 case DEVLINK_PARAM_TYPE_U8:
3011 value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3012 break;
3013 case DEVLINK_PARAM_TYPE_U16:
3014 value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3015 break;
3016 case DEVLINK_PARAM_TYPE_U32:
3017 value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3018 break;
3019 case DEVLINK_PARAM_TYPE_STRING:
3020 if (nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) >
3021 DEVLINK_PARAM_MAX_STRING_VALUE)
3022 return -EINVAL;
3023 value->vstr = nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3024 break;
3025 case DEVLINK_PARAM_TYPE_BOOL:
3026 value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
3027 true : false;
3028 break;
3029 }
3030 return 0;
3031}
3032
45f05def
MS		 3033static struct devlink_param_item *
3034devlink_param_get_from_info(struct devlink *devlink,
3035 struct genl_info *info)
3036{
3037 char *param_name;
3038
3039 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3040 return NULL;
3041
3042 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
3043 return devlink_param_find_by_name(&devlink->param_list, param_name);
3044}
3045
3046static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3047 struct genl_info *info)
3048{
3049 struct devlink *devlink = info->user_ptr[0];
3050 struct devlink_param_item *param_item;
3051 struct sk_buff *msg;
3052 int err;
3053
3054 param_item = devlink_param_get_from_info(devlink, info);
3055 if (!param_item)
3056 return -EINVAL;
3057
3058 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3059 if (!msg)
3060 return -ENOMEM;
3061
3062 err = devlink_nl_param_fill(msg, devlink, param_item,
3063 DEVLINK_CMD_PARAM_GET,
3064 info->snd_portid, info->snd_seq, 0);
3065 if (err) {
3066 nlmsg_free(msg);
3067 return err;
3068 }
3069
3070 return genlmsg_reply(msg, info);
3071}
3072
e3b7ca18
MS		 3073static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3074 struct genl_info *info)
3075{
3076 struct devlink *devlink = info->user_ptr[0];
3077 enum devlink_param_type param_type;
3078 struct devlink_param_gset_ctx ctx;
3079 enum devlink_param_cmode cmode;
3080 struct devlink_param_item *param_item;
3081 const struct devlink_param *param;
3082 union devlink_param_value value;
3083 int err = 0;
3084
3085 param_item = devlink_param_get_from_info(devlink, info);
3086 if (!param_item)
3087 return -EINVAL;
3088 param = param_item->param;
3089 err = devlink_param_type_get_from_info(info, &param_type);
3090 if (err)
3091 return err;
3092 if (param_type != param->type)
3093 return -EINVAL;
3094 err = devlink_param_value_get_from_info(param, info, &value);
3095 if (err)
3096 return err;
3097 if (param->validate) {
3098 err = param->validate(devlink, param->id, value, info->extack);
3099 if (err)
3100 return err;
3101 }
3102
3103 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3104 return -EINVAL;
3105 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3106 if (!devlink_param_cmode_is_supported(param, cmode))
3107 return -EOPNOTSUPP;
3108
3109 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3110 param_item->driverinit_value = value;
3111 param_item->driverinit_value_valid = true;
3112 } else {
3113 if (!param->set)
3114 return -EOPNOTSUPP;
3115 ctx.val = value;
3116 ctx.cmode = cmode;
3117 err = devlink_param_set(devlink, param, &ctx);
3118 if (err)
3119 return err;
3120 }
3121
ea601e17 3122 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
e3b7ca18
MS		 3123 return 0;
3124}
3125
eabaef18
MS		 3126static int devlink_param_register_one(struct devlink *devlink,
3127 const struct devlink_param *param)
3128{
3129 struct devlink_param_item *param_item;
3130
3131 if (devlink_param_find_by_name(&devlink->param_list,
3132 param->name))
3133 return -EEXIST;
3134
3135 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3136 WARN_ON(param->get || param->set);
3137 else
3138 WARN_ON(!param->get || !param->set);
3139
3140 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3141 if (!param_item)
3142 return -ENOMEM;
3143 param_item->param = param;
3144
3145 list_add_tail(&param_item->list, &devlink->param_list);
ea601e17 3146 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
eabaef18
MS		 3147 return 0;
3148}
3149
3150static void devlink_param_unregister_one(struct devlink *devlink,
3151 const struct devlink_param *param)
3152{
3153 struct devlink_param_item *param_item;
3154
3155 param_item = devlink_param_find_by_name(&devlink->param_list,
3156 param->name);
3157 WARN_ON(!param_item);
ea601e17 3158 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 3159 list_del(&param_item->list);
3160 kfree(param_item);
3161}
3162
a006d467
AV		 3163static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3164 struct devlink *devlink,
3165 struct devlink_snapshot *snapshot)
3166{
3167 struct nlattr *snap_attr;
3168 int err;
3169
3170 snap_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
3171 if (!snap_attr)
3172 return -EINVAL;
3173
3174 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3175 if (err)
3176 goto nla_put_failure;
3177
3178 nla_nest_end(msg, snap_attr);
3179 return 0;
3180
3181nla_put_failure:
3182 nla_nest_cancel(msg, snap_attr);
3183 return err;
3184}
3185
3186static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3187 struct devlink *devlink,
3188 struct devlink_region *region)
3189{
3190 struct devlink_snapshot *snapshot;
3191 struct nlattr *snapshots_attr;
3192 int err;
3193
3194 snapshots_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOTS);
3195 if (!snapshots_attr)
3196 return -EINVAL;
3197
3198 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3199 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3200 if (err)
3201 goto nla_put_failure;
3202 }
3203
3204 nla_nest_end(msg, snapshots_attr);
3205 return 0;
3206
3207nla_put_failure:
3208 nla_nest_cancel(msg, snapshots_attr);
3209 return err;
3210}
3211
d8db7ea5
AV		 3212static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3213 enum devlink_command cmd, u32 portid,
3214 u32 seq, int flags,
3215 struct devlink_region *region)
3216{
3217 void *hdr;
3218 int err;
3219
3220 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3221 if (!hdr)
3222 return -EMSGSIZE;
3223
3224 err = devlink_nl_put_handle(msg, devlink);
3225 if (err)
3226 goto nla_put_failure;
3227
3228 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3229 if (err)
3230 goto nla_put_failure;
3231
3232 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3233 region->size,
3234 DEVLINK_ATTR_PAD);
3235 if (err)
3236 goto nla_put_failure;
3237
a006d467
AV		 3238 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3239 if (err)
3240 goto nla_put_failure;
3241
d8db7ea5
AV		 3242 genlmsg_end(msg, hdr);
3243 return 0;
3244
3245nla_put_failure:
3246 genlmsg_cancel(msg, hdr);
3247 return err;
3248}
3249
866319bb
AV		 3250static void devlink_nl_region_notify(struct devlink_region *region,
3251 struct devlink_snapshot *snapshot,
3252 enum devlink_command cmd)
3253{
3254 struct devlink *devlink = region->devlink;
3255 struct sk_buff *msg;
3256 void *hdr;
3257 int err;
3258
3259 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3260
3261 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3262 if (!msg)
3263 return;
3264
3265 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3266 if (!hdr)
3267 goto out_free_msg;
3268
3269 err = devlink_nl_put_handle(msg, devlink);
3270 if (err)
3271 goto out_cancel_msg;
3272
3273 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3274 region->name);
3275 if (err)
3276 goto out_cancel_msg;
3277
3278 if (snapshot) {
3279 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3280 snapshot->id);
3281 if (err)
3282 goto out_cancel_msg;
3283 } else {
3284 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3285 region->size, DEVLINK_ATTR_PAD);
3286 if (err)
3287 goto out_cancel_msg;
3288 }
3289 genlmsg_end(msg, hdr);
3290
3291 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3292 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3293
3294 return;
3295
3296out_cancel_msg:
3297 genlmsg_cancel(msg, hdr);
3298out_free_msg:
3299 nlmsg_free(msg);
3300}
3301
d8db7ea5
AV		 3302static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3303 struct genl_info *info)
3304{
3305 struct devlink *devlink = info->user_ptr[0];
3306 struct devlink_region *region;
3307 const char *region_name;
3308 struct sk_buff *msg;
3309 int err;
3310
3311 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3312 return -EINVAL;
3313
3314 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3315 region = devlink_region_get_by_name(devlink, region_name);
3316 if (!region)
3317 return -EINVAL;
3318
3319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3320 if (!msg)
3321 return -ENOMEM;
3322
3323 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3324 info->snd_portid, info->snd_seq, 0,
3325 region);
3326 if (err) {
3327 nlmsg_free(msg);
3328 return err;
3329 }
3330
3331 return genlmsg_reply(msg, info);
3332}
3333
3334static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3335 struct netlink_callback *cb)
3336{
3337 struct devlink_region *region;
3338 struct devlink *devlink;
3339 int start = cb->args[0];
3340 int idx = 0;
3341 int err;
3342
3343 mutex_lock(&devlink_mutex);
3344 list_for_each_entry(devlink, &devlink_list, list) {
3345 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3346 continue;
3347
3348 mutex_lock(&devlink->lock);
3349 list_for_each_entry(region, &devlink->region_list, list) {
3350 if (idx < start) {
3351 idx++;
3352 continue;
3353 }
3354 err = devlink_nl_region_fill(msg, devlink,
3355 DEVLINK_CMD_REGION_GET,
3356 NETLINK_CB(cb->skb).portid,
3357 cb->nlh->nlmsg_seq,
3358 NLM_F_MULTI, region);
3359 if (err) {
3360 mutex_unlock(&devlink->lock);
3361 goto out;
3362 }
3363 idx++;
3364 }
3365 mutex_unlock(&devlink->lock);
3366 }
3367out:
3368 mutex_unlock(&devlink_mutex);
3369 cb->args[0] = idx;
3370 return msg->len;
3371}
3372
866319bb
AV		 3373static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3374 struct genl_info *info)
3375{
3376 struct devlink *devlink = info->user_ptr[0];
3377 struct devlink_snapshot *snapshot;
3378 struct devlink_region *region;
3379 const char *region_name;
3380 u32 snapshot_id;
3381
3382 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3383 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3384 return -EINVAL;
3385
3386 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3387 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3388
3389 region = devlink_region_get_by_name(devlink, region_name);
3390 if (!region)
3391 return -EINVAL;
3392
3393 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3394 if (!snapshot)
3395 return -EINVAL;
3396
3397 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3398 devlink_region_snapshot_del(snapshot);
3399 return 0;
3400}
3401
4e54795a
AV		 3402static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3403 struct devlink *devlink,
3404 u8 *chunk, u32 chunk_size,
3405 u64 addr)
3406{
3407 struct nlattr *chunk_attr;
3408 int err;
3409
3410 chunk_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_CHUNK);
3411 if (!chunk_attr)
3412 return -EINVAL;
3413
3414 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3415 if (err)
3416 goto nla_put_failure;
3417
3418 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3419 DEVLINK_ATTR_PAD);
3420 if (err)
3421 goto nla_put_failure;
3422
3423 nla_nest_end(msg, chunk_attr);
3424 return 0;
3425
3426nla_put_failure:
3427 nla_nest_cancel(msg, chunk_attr);
3428 return err;
3429}
3430
3431#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3432
3433static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3434 struct devlink *devlink,
3435 struct devlink_region *region,
3436 struct nlattr **attrs,
3437 u64 start_offset,
3438 u64 end_offset,
3439 bool dump,
3440 u64 *new_offset)
3441{
3442 struct devlink_snapshot *snapshot;
3443 u64 curr_offset = start_offset;
3444 u32 snapshot_id;
3445 int err = 0;
3446
3447 *new_offset = start_offset;
3448
3449 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3450 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3451 if (!snapshot)
3452 return -EINVAL;
3453
3454 if (end_offset > snapshot->data_len || dump)
3455 end_offset = snapshot->data_len;
3456
3457 while (curr_offset < end_offset) {
3458 u32 data_size;
3459 u8 *data;
3460
3461 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3462 data_size = end_offset - curr_offset;
3463 else
3464 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3465
3466 data = &snapshot->data[curr_offset];
3467 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3468 data, data_size,
3469 curr_offset);
3470 if (err)
3471 break;
3472
3473 curr_offset += data_size;
3474 }
3475 *new_offset = curr_offset;
3476
3477 return err;
3478}
3479
3480static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3481 struct netlink_callback *cb)
3482{
3483 u64 ret_offset, start_offset, end_offset = 0;
3484 struct nlattr *attrs[DEVLINK_ATTR_MAX + 1];
3485 const struct genl_ops *ops = cb->data;
3486 struct devlink_region *region;
3487 struct nlattr *chunks_attr;
3488 const char *region_name;
3489 struct devlink *devlink;
3490 bool dump = true;
3491 void *hdr;
3492 int err;
3493
3494 start_offset = *((u64 *)&cb->args[0]);
3495
3496 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + devlink_nl_family.hdrsize,
3497 attrs, DEVLINK_ATTR_MAX, ops->policy, NULL);
3498 if (err)
3499 goto out;
3500
3501 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
3502 if (IS_ERR(devlink))
3503 goto out;
3504
3505 mutex_lock(&devlink_mutex);
3506 mutex_lock(&devlink->lock);
3507
3508 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
3509 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3510 goto out_unlock;
3511
3512 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3513 region = devlink_region_get_by_name(devlink, region_name);
3514 if (!region)
3515 goto out_unlock;
3516
3517 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3518 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3519 DEVLINK_CMD_REGION_READ);
3520 if (!hdr)
3521 goto out_unlock;
3522
3523 err = devlink_nl_put_handle(skb, devlink);
3524 if (err)
3525 goto nla_put_failure;
3526
3527 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
3528 if (err)
3529 goto nla_put_failure;
3530
3531 chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS);
3532 if (!chunks_attr)
3533 goto nla_put_failure;
3534
3535 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
3536 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
3537 if (!start_offset)
3538 start_offset =
3539 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3540
3541 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3542 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
3543 dump = false;
3544 }
3545
3546 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
3547 region, attrs,
3548 start_offset,
3549 end_offset, dump,
3550 &ret_offset);
3551
3552 if (err && err != -EMSGSIZE)
3553 goto nla_put_failure;
3554
3555 /* Check if there was any progress done to prevent infinite loop */
3556 if (ret_offset == start_offset)
3557 goto nla_put_failure;
3558
3559 *((u64 *)&cb->args[0]) = ret_offset;
3560
3561 nla_nest_end(skb, chunks_attr);
3562 genlmsg_end(skb, hdr);
3563 mutex_unlock(&devlink->lock);
3564 mutex_unlock(&devlink_mutex);
3565
3566 return skb->len;
3567
3568nla_put_failure:
3569 genlmsg_cancel(skb, hdr);
3570out_unlock:
3571 mutex_unlock(&devlink->lock);
3572 mutex_unlock(&devlink_mutex);
3573out:
3574 return 0;
3575}
3576
bfcd3a46
JP		 3577static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
3578 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
3579 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
3580 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
3581 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
3582 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 3583 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
3584 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
3585 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
3586 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
3587 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
3588 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
3589 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 3590 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 3591 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 3592 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 3593 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
3594 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 3595 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
3596 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 3597 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
3598 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
3599 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 3600 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 3601 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
bfcd3a46
JP		 3602};
3603
3604static const struct genl_ops devlink_nl_ops[] = {
3605 {
3606 .cmd = DEVLINK_CMD_GET,
3607 .doit = devlink_nl_cmd_get_doit,
3608 .dumpit = devlink_nl_cmd_get_dumpit,
3609 .policy = devlink_nl_policy,
1fc2257e 3610 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 3611 /* can be retrieved by unprivileged users */
3612 },
3613 {
3614 .cmd = DEVLINK_CMD_PORT_GET,
3615 .doit = devlink_nl_cmd_port_get_doit,
3616 .dumpit = devlink_nl_cmd_port_get_dumpit,
3617 .policy = devlink_nl_policy,
3618 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
3619 /* can be retrieved by unprivileged users */
3620 },
3621 {
3622 .cmd = DEVLINK_CMD_PORT_SET,
3623 .doit = devlink_nl_cmd_port_set_doit,
3624 .policy = devlink_nl_policy,
3625 .flags = GENL_ADMIN_PERM,
3626 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
3627 },
3628 {
3629 .cmd = DEVLINK_CMD_PORT_SPLIT,
3630 .doit = devlink_nl_cmd_port_split_doit,
3631 .policy = devlink_nl_policy,
3632 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 3633 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3634 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 3635 },
3636 {
3637 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
3638 .doit = devlink_nl_cmd_port_unsplit_doit,
3639 .policy = devlink_nl_policy,
3640 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 3641 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3642 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 3643 },
bf797471
JP		 3644 {
3645 .cmd = DEVLINK_CMD_SB_GET,
3646 .doit = devlink_nl_cmd_sb_get_doit,
3647 .dumpit = devlink_nl_cmd_sb_get_dumpit,
3648 .policy = devlink_nl_policy,
3649 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3650 DEVLINK_NL_FLAG_NEED_SB,
3651 /* can be retrieved by unprivileged users */
3652 },
3653 {
3654 .cmd = DEVLINK_CMD_SB_POOL_GET,
3655 .doit = devlink_nl_cmd_sb_pool_get_doit,
3656 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
3657 .policy = devlink_nl_policy,
3658 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3659 DEVLINK_NL_FLAG_NEED_SB,
3660 /* can be retrieved by unprivileged users */
3661 },
3662 {
3663 .cmd = DEVLINK_CMD_SB_POOL_SET,
3664 .doit = devlink_nl_cmd_sb_pool_set_doit,
3665 .policy = devlink_nl_policy,
3666 .flags = GENL_ADMIN_PERM,
3667 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3668 DEVLINK_NL_FLAG_NEED_SB,
3669 },
3670 {
3671 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
3672 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
3673 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
3674 .policy = devlink_nl_policy,
3675 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3676 DEVLINK_NL_FLAG_NEED_SB,
3677 /* can be retrieved by unprivileged users */
3678 },
3679 {
3680 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
3681 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
3682 .policy = devlink_nl_policy,
3683 .flags = GENL_ADMIN_PERM,
3684 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3685 DEVLINK_NL_FLAG_NEED_SB,
3686 },
3687 {
3688 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
3689 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
3690 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
3691 .policy = devlink_nl_policy,
3692 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3693 DEVLINK_NL_FLAG_NEED_SB,
3694 /* can be retrieved by unprivileged users */
3695 },
3696 {
3697 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
3698 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
3699 .policy = devlink_nl_policy,
3700 .flags = GENL_ADMIN_PERM,
3701 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
3702 DEVLINK_NL_FLAG_NEED_SB,
3703 },
df38dafd
JP		 3704 {
3705 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
3706 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
3707 .policy = devlink_nl_policy,
3708 .flags = GENL_ADMIN_PERM,
3709 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 3710 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 3711 },
3712 {
3713 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
3714 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
3715 .policy = devlink_nl_policy,
3716 .flags = GENL_ADMIN_PERM,
3717 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 3718 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 3719 },
08f4b591 3720 {
adf200f3
JP		 3721 .cmd = DEVLINK_CMD_ESWITCH_GET,
3722 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 3723 .policy = devlink_nl_policy,
3724 .flags = GENL_ADMIN_PERM,
3725 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3726 },
3727 {
adf200f3
JP		 3728 .cmd = DEVLINK_CMD_ESWITCH_SET,
3729 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591
OG		 3730 .policy = devlink_nl_policy,
3731 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 3732 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3733 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 3734 },
1555d204
AS		 3735 {
3736 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
3737 .doit = devlink_nl_cmd_dpipe_table_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_ENTRIES_GET,
3744 .doit = devlink_nl_cmd_dpipe_entries_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_HEADERS_GET,
3751 .doit = devlink_nl_cmd_dpipe_headers_get,
3752 .policy = devlink_nl_policy,
1555d204 3753 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 3754 /* can be retrieved by unprivileged users */
1555d204
AS		 3755 },
3756 {
3757 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
3758 .doit = devlink_nl_cmd_dpipe_table_counters_set,
3759 .policy = devlink_nl_policy,
3760 .flags = GENL_ADMIN_PERM,
3761 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3762 },
d9f9b9a4
AS		 3763 {
3764 .cmd = DEVLINK_CMD_RESOURCE_SET,
3765 .doit = devlink_nl_cmd_resource_set,
3766 .policy = devlink_nl_policy,
3767 .flags = GENL_ADMIN_PERM,
3768 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3769 },
3770 {
3771 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
3772 .doit = devlink_nl_cmd_resource_dump,
3773 .policy = devlink_nl_policy,
d9f9b9a4 3774 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 3775 /* can be retrieved by unprivileged users */
d9f9b9a4 3776 },
2d8dc5bb
AS		 3777 {
3778 .cmd = DEVLINK_CMD_RELOAD,
3779 .doit = devlink_nl_cmd_reload,
3780 .policy = devlink_nl_policy,
3781 .flags = GENL_ADMIN_PERM,
3782 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
3783 DEVLINK_NL_FLAG_NO_LOCK,
3784 },
45f05def
MS		 3785 {
3786 .cmd = DEVLINK_CMD_PARAM_GET,
3787 .doit = devlink_nl_cmd_param_get_doit,
3788 .dumpit = devlink_nl_cmd_param_get_dumpit,
3789 .policy = devlink_nl_policy,
3790 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3791 /* can be retrieved by unprivileged users */
3792 },
e3b7ca18
MS		 3793 {
3794 .cmd = DEVLINK_CMD_PARAM_SET,
3795 .doit = devlink_nl_cmd_param_set_doit,
3796 .policy = devlink_nl_policy,
3797 .flags = GENL_ADMIN_PERM,
3798 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3799 },
d8db7ea5
AV		 3800 {
3801 .cmd = DEVLINK_CMD_REGION_GET,
3802 .doit = devlink_nl_cmd_region_get_doit,
3803 .dumpit = devlink_nl_cmd_region_get_dumpit,
3804 .policy = devlink_nl_policy,
3805 .flags = GENL_ADMIN_PERM,
3806 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3807 },
866319bb
AV		 3808 {
3809 .cmd = DEVLINK_CMD_REGION_DEL,
3810 .doit = devlink_nl_cmd_region_del,
3811 .policy = devlink_nl_policy,
3812 .flags = GENL_ADMIN_PERM,
3813 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3814 },
4e54795a
AV		 3815 {
3816 .cmd = DEVLINK_CMD_REGION_READ,
3817 .dumpit = devlink_nl_cmd_region_read_dumpit,
3818 .policy = devlink_nl_policy,
3819 .flags = GENL_ADMIN_PERM,
3820 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
3821 },
bfcd3a46
JP		 3822};
3823
56989f6d 3824static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 3825 .name = DEVLINK_GENL_NAME,
3826 .version = DEVLINK_GENL_VERSION,
3827 .maxattr = DEVLINK_ATTR_MAX,
3828 .netnsok = true,
3829 .pre_doit = devlink_nl_pre_doit,
3830 .post_doit = devlink_nl_post_doit,
3831 .module = THIS_MODULE,
3832 .ops = devlink_nl_ops,
3833 .n_ops = ARRAY_SIZE(devlink_nl_ops),
3834 .mcgrps = devlink_nl_mcgrps,
3835 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
3836};
3837
bfcd3a46
JP		 3838/**
3839 * devlink_alloc - Allocate new devlink instance resources
3840 *
3841 * @ops: ops
3842 * @priv_size: size of user private data
3843 *
3844 * Allocate new devlink instance resources, including devlink index
3845 * and name.
3846 */
3847struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
3848{
3849 struct devlink *devlink;
3850
3851 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
3852 if (!devlink)
3853 return NULL;
3854 devlink->ops = ops;
3855 devlink_net_set(devlink, &init_net);
3856 INIT_LIST_HEAD(&devlink->port_list);
bf797471 3857 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 3858 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 3859 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 3860 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 3861 INIT_LIST_HEAD(&devlink->region_list);
2406e7e5 3862 mutex_init(&devlink->lock);
bfcd3a46
JP		 3863 return devlink;
3864}
3865EXPORT_SYMBOL_GPL(devlink_alloc);
3866
3867/**
3868 * devlink_register - Register devlink instance
3869 *
3870 * @devlink: devlink
3871 */
3872int devlink_register(struct devlink *devlink, struct device *dev)
3873{
3874 mutex_lock(&devlink_mutex);
3875 devlink->dev = dev;
3876 list_add_tail(&devlink->list, &devlink_list);
3877 devlink_notify(devlink, DEVLINK_CMD_NEW);
3878 mutex_unlock(&devlink_mutex);
3879 return 0;
3880}
3881EXPORT_SYMBOL_GPL(devlink_register);
3882
3883/**
3884 * devlink_unregister - Unregister devlink instance
3885 *
3886 * @devlink: devlink
3887 */
3888void devlink_unregister(struct devlink *devlink)
3889{
3890 mutex_lock(&devlink_mutex);
3891 devlink_notify(devlink, DEVLINK_CMD_DEL);
3892 list_del(&devlink->list);
3893 mutex_unlock(&devlink_mutex);
3894}
3895EXPORT_SYMBOL_GPL(devlink_unregister);
3896
3897/**
3898 * devlink_free - Free devlink instance resources
3899 *
3900 * @devlink: devlink
3901 */
3902void devlink_free(struct devlink *devlink)
3903{
3904 kfree(devlink);
3905}
3906EXPORT_SYMBOL_GPL(devlink_free);
3907
3908/**
3909 * devlink_port_register - Register devlink port
3910 *
3911 * @devlink: devlink
3912 * @devlink_port: devlink port
3913 * @port_index
3914 *
3915 * Register devlink port with provided port index. User can use
3916 * any indexing, even hw-related one. devlink_port structure
3917 * is convenient to be embedded inside user driver private structure.
3918 * Note that the caller should take care of zeroing the devlink_port
3919 * structure.
3920 */
3921int devlink_port_register(struct devlink *devlink,
3922 struct devlink_port *devlink_port,
3923 unsigned int port_index)
3924{
2406e7e5 3925 mutex_lock(&devlink->lock);
bfcd3a46 3926 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 3927 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 3928 return -EEXIST;
3929 }
3930 devlink_port->devlink = devlink;
3931 devlink_port->index = port_index;
bfcd3a46
JP		 3932 devlink_port->registered = true;
3933 list_add_tail(&devlink_port->list, &devlink->port_list);
2406e7e5 3934 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 3935 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
3936 return 0;
3937}
3938EXPORT_SYMBOL_GPL(devlink_port_register);
3939
3940/**
3941 * devlink_port_unregister - Unregister devlink port
3942 *
3943 * @devlink_port: devlink port
3944 */
3945void devlink_port_unregister(struct devlink_port *devlink_port)
3946{
2406e7e5
AS		 3947 struct devlink *devlink = devlink_port->devlink;
3948
bfcd3a46 3949 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 3950 mutex_lock(&devlink->lock);
bfcd3a46 3951 list_del(&devlink_port->list);
2406e7e5 3952 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 3953}
3954EXPORT_SYMBOL_GPL(devlink_port_unregister);
3955
3956static void __devlink_port_type_set(struct devlink_port *devlink_port,
3957 enum devlink_port_type type,
3958 void *type_dev)
3959{
3960 devlink_port->type = type;
3961 devlink_port->type_dev = type_dev;
3962 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
3963}
3964
3965/**
3966 * devlink_port_type_eth_set - Set port type to Ethernet
3967 *
3968 * @devlink_port: devlink port
3969 * @netdev: related netdevice
3970 */
3971void devlink_port_type_eth_set(struct devlink_port *devlink_port,
3972 struct net_device *netdev)
3973{
3974 return __devlink_port_type_set(devlink_port,
3975 DEVLINK_PORT_TYPE_ETH, netdev);
3976}
3977EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
3978
3979/**
3980 * devlink_port_type_ib_set - Set port type to InfiniBand
3981 *
3982 * @devlink_port: devlink port
3983 * @ibdev: related IB device
3984 */
3985void devlink_port_type_ib_set(struct devlink_port *devlink_port,
3986 struct ib_device *ibdev)
3987{
3988 return __devlink_port_type_set(devlink_port,
3989 DEVLINK_PORT_TYPE_IB, ibdev);
3990}
3991EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
3992
3993/**
3994 * devlink_port_type_clear - Clear port type
3995 *
3996 * @devlink_port: devlink port
3997 */
3998void devlink_port_type_clear(struct devlink_port *devlink_port)
3999{
4000 return __devlink_port_type_set(devlink_port,
4001 DEVLINK_PORT_TYPE_NOTSET, NULL);
4002}
4003EXPORT_SYMBOL_GPL(devlink_port_type_clear);
4004
4005/**
b9ffcbaf 4006 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 4007 *
4008 * @devlink_port: devlink port
5ec1380a 4009 * @flavour: flavour of the port
b9ffcbaf
JP		 4010 * @port_number: number of the port that is facing user, for example
4011 * the front panel port number
4012 * @split: indicates if this is split port
4013 * @split_subport_number: if the port is split, this is the number
4014 * of subport.
bfcd3a46 4015 */
b9ffcbaf 4016void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 4017 enum devlink_port_flavour flavour,
b9ffcbaf
JP		 4018 u32 port_number, bool split,
4019 u32 split_subport_number)
bfcd3a46 4020{
b9ffcbaf
JP		 4021 struct devlink_port_attrs *attrs = &devlink_port->attrs;
4022
4023 attrs->set = true;
5ec1380a 4024 attrs->flavour = flavour;
b9ffcbaf
JP		 4025 attrs->port_number = port_number;
4026 attrs->split = split;
4027 attrs->split_subport_number = split_subport_number;
bfcd3a46
JP		 4028 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
4029}
b9ffcbaf 4030EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 4031
08474c1a
JP		 4032int devlink_port_get_phys_port_name(struct devlink_port *devlink_port,
4033 char *name, size_t len)
4034{
4035 struct devlink_port_attrs *attrs = &devlink_port->attrs;
4036 int n = 0;
4037
4038 if (!attrs->set)
4039 return -EOPNOTSUPP;
4040
4041 switch (attrs->flavour) {
4042 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
4043 if (!attrs->split)
4044 n = snprintf(name, len, "p%u", attrs->port_number);
4045 else
4046 n = snprintf(name, len, "p%us%u", attrs->port_number,
4047 attrs->split_subport_number);
4048 break;
4049 case DEVLINK_PORT_FLAVOUR_CPU:
4050 case DEVLINK_PORT_FLAVOUR_DSA:
4051 /* As CPU and DSA ports do not have a netdevice associated
4052 * case should not ever happen.
4053 */
4054 WARN_ON(1);
4055 return -EINVAL;
4056 }
4057
4058 if (n >= len)
4059 return -EINVAL;
4060
4061 return 0;
4062}
4063EXPORT_SYMBOL_GPL(devlink_port_get_phys_port_name);
4064
bf797471
JP		 4065int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
4066 u32 size, u16 ingress_pools_count,
4067 u16 egress_pools_count, u16 ingress_tc_count,
4068 u16 egress_tc_count)
4069{
4070 struct devlink_sb *devlink_sb;
4071 int err = 0;
4072
2406e7e5 4073 mutex_lock(&devlink->lock);
bf797471
JP		 4074 if (devlink_sb_index_exists(devlink, sb_index)) {
4075 err = -EEXIST;
4076 goto unlock;
4077 }
4078
4079 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
4080 if (!devlink_sb) {
4081 err = -ENOMEM;
4082 goto unlock;
4083 }
4084 devlink_sb->index = sb_index;
4085 devlink_sb->size = size;
4086 devlink_sb->ingress_pools_count = ingress_pools_count;
4087 devlink_sb->egress_pools_count = egress_pools_count;
4088 devlink_sb->ingress_tc_count = ingress_tc_count;
4089 devlink_sb->egress_tc_count = egress_tc_count;
4090 list_add_tail(&devlink_sb->list, &devlink->sb_list);
4091unlock:
2406e7e5 4092 mutex_unlock(&devlink->lock);
bf797471
JP		 4093 return err;
4094}
4095EXPORT_SYMBOL_GPL(devlink_sb_register);
4096
4097void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
4098{
4099 struct devlink_sb *devlink_sb;
4100
2406e7e5 4101 mutex_lock(&devlink->lock);
bf797471
JP		 4102 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
4103 WARN_ON(!devlink_sb);
4104 list_del(&devlink_sb->list);
2406e7e5 4105 mutex_unlock(&devlink->lock);
bf797471
JP		 4106 kfree(devlink_sb);
4107}
4108EXPORT_SYMBOL_GPL(devlink_sb_unregister);
4109
1555d204
AS		 4110/**
4111 * devlink_dpipe_headers_register - register dpipe headers
4112 *
4113 * @devlink: devlink
4114 * @dpipe_headers: dpipe header array
4115 *
4116 * Register the headers supported by hardware.
4117 */
4118int devlink_dpipe_headers_register(struct devlink *devlink,
4119 struct devlink_dpipe_headers *dpipe_headers)
4120{
2406e7e5 4121 mutex_lock(&devlink->lock);
1555d204 4122 devlink->dpipe_headers = dpipe_headers;
2406e7e5 4123 mutex_unlock(&devlink->lock);
1555d204
AS		 4124 return 0;
4125}
4126EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
4127
4128/**
4129 * devlink_dpipe_headers_unregister - unregister dpipe headers
4130 *
4131 * @devlink: devlink
4132 *
4133 * Unregister the headers supported by hardware.
4134 */
4135void devlink_dpipe_headers_unregister(struct devlink *devlink)
4136{
2406e7e5 4137 mutex_lock(&devlink->lock);
1555d204 4138 devlink->dpipe_headers = NULL;
2406e7e5 4139 mutex_unlock(&devlink->lock);
1555d204
AS		 4140}
4141EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
4142
4143/**
4144 * devlink_dpipe_table_counter_enabled - check if counter allocation
4145 * required
4146 * @devlink: devlink
4147 * @table_name: tables name
4148 *
4149 * Used by driver to check if counter allocation is required.
4150 * After counter allocation is turned on the table entries
4151 * are updated to include counter statistics.
4152 *
4153 * After that point on the driver must respect the counter
4154 * state so that each entry added to the table is added
4155 * with a counter.
4156 */
4157bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
4158 const char *table_name)
4159{
4160 struct devlink_dpipe_table *table;
4161 bool enabled;
4162
4163 rcu_read_lock();
4164 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
4165 table_name);
4166 enabled = false;
4167 if (table)
4168 enabled = table->counters_enabled;
4169 rcu_read_unlock();
4170 return enabled;
4171}
4172EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
4173
4174/**
4175 * devlink_dpipe_table_register - register dpipe table
4176 *
4177 * @devlink: devlink
4178 * @table_name: table name
4179 * @table_ops: table ops
4180 * @priv: priv
1555d204
AS		 4181 * @counter_control_extern: external control for counters
4182 */
4183int devlink_dpipe_table_register(struct devlink *devlink,
4184 const char *table_name,
4185 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 4186 void *priv, bool counter_control_extern)
1555d204
AS		 4187{
4188 struct devlink_dpipe_table *table;
4189
4190 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
4191 return -EEXIST;
4192
ffd3cdcc
AS		 4193 if (WARN_ON(!table_ops->size_get))
4194 return -EINVAL;
4195
1555d204
AS		 4196 table = kzalloc(sizeof(*table), GFP_KERNEL);
4197 if (!table)
4198 return -ENOMEM;
4199
4200 table->name = table_name;
4201 table->table_ops = table_ops;
4202 table->priv = priv;
1555d204
AS		 4203 table->counter_control_extern = counter_control_extern;
4204
2406e7e5 4205 mutex_lock(&devlink->lock);
1555d204 4206 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
2406e7e5 4207 mutex_unlock(&devlink->lock);
1555d204
AS		 4208 return 0;
4209}
4210EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
4211
4212/**
4213 * devlink_dpipe_table_unregister - unregister dpipe table
4214 *
4215 * @devlink: devlink
4216 * @table_name: table name
4217 */
4218void devlink_dpipe_table_unregister(struct devlink *devlink,
4219 const char *table_name)
4220{
4221 struct devlink_dpipe_table *table;
4222
2406e7e5 4223 mutex_lock(&devlink->lock);
1555d204
AS		 4224 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
4225 table_name);
4226 if (!table)
4227 goto unlock;
4228 list_del_rcu(&table->list);
2406e7e5 4229 mutex_unlock(&devlink->lock);
1555d204
AS		 4230 kfree_rcu(table, rcu);
4231 return;
4232unlock:
2406e7e5 4233 mutex_unlock(&devlink->lock);
1555d204
AS		 4234}
4235EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
4236
d9f9b9a4
AS		 4237/**
4238 * devlink_resource_register - devlink resource register
4239 *
4240 * @devlink: devlink
4241 * @resource_name: resource's name
4242 * @top_hierarchy: top hierarchy
4243 * @reload_required: reload is required for new configuration to
4244 * apply
4245 * @resource_size: resource's size
4246 * @resource_id: resource's id
4247 * @parent_reosurce_id: resource's parent id
4248 * @size params: size parameters
d9f9b9a4
AS		 4249 */
4250int devlink_resource_register(struct devlink *devlink,
4251 const char *resource_name,
d9f9b9a4
AS		 4252 u64 resource_size,
4253 u64 resource_id,
4254 u64 parent_resource_id,
fc56be47 4255 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 4256{
4257 struct devlink_resource *resource;
4258 struct list_head *resource_list;
14530746 4259 bool top_hierarchy;
d9f9b9a4
AS		 4260 int err = 0;
4261
14530746
DA		 4262 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
4263
d9f9b9a4
AS		 4264 mutex_lock(&devlink->lock);
4265 resource = devlink_resource_find(devlink, NULL, resource_id);
4266 if (resource) {
4267 err = -EINVAL;
4268 goto out;
4269 }
4270
4271 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
4272 if (!resource) {
4273 err = -ENOMEM;
4274 goto out;
4275 }
4276
4277 if (top_hierarchy) {
4278 resource_list = &devlink->resource_list;
4279 } else {
4280 struct devlink_resource *parent_resource;
4281
4282 parent_resource = devlink_resource_find(devlink, NULL,
4283 parent_resource_id);
4284 if (parent_resource) {
4285 resource_list = &parent_resource->resource_list;
4286 resource->parent = parent_resource;
4287 } else {
b75703de 4288 kfree(resource);
d9f9b9a4
AS		 4289 err = -EINVAL;
4290 goto out;
4291 }
4292 }
4293
4294 resource->name = resource_name;
4295 resource->size = resource_size;
4296 resource->size_new = resource_size;
4297 resource->id = resource_id;
d9f9b9a4 4298 resource->size_valid = true;
77d27096
JP		 4299 memcpy(&resource->size_params, size_params,
4300 sizeof(resource->size_params));
d9f9b9a4
AS		 4301 INIT_LIST_HEAD(&resource->resource_list);
4302 list_add_tail(&resource->list, resource_list);
4303out:
4304 mutex_unlock(&devlink->lock);
4305 return err;
4306}
4307EXPORT_SYMBOL_GPL(devlink_resource_register);
4308
4309/**
4310 * devlink_resources_unregister - free all resources
4311 *
4312 * @devlink: devlink
4313 * @resource: resource
4314 */
4315void devlink_resources_unregister(struct devlink *devlink,
4316 struct devlink_resource *resource)
4317{
4318 struct devlink_resource *tmp, *child_resource;
4319 struct list_head *resource_list;
4320
4321 if (resource)
4322 resource_list = &resource->resource_list;
4323 else
4324 resource_list = &devlink->resource_list;
4325
4326 if (!resource)
4327 mutex_lock(&devlink->lock);
4328
4329 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
4330 devlink_resources_unregister(devlink, child_resource);
4331 list_del(&child_resource->list);
4332 kfree(child_resource);
4333 }
4334
4335 if (!resource)
4336 mutex_unlock(&devlink->lock);
4337}
4338EXPORT_SYMBOL_GPL(devlink_resources_unregister);
4339
4340/**
4341 * devlink_resource_size_get - get and update size
4342 *
4343 * @devlink: devlink
4344 * @resource_id: the requested resource id
4345 * @p_resource_size: ptr to update
4346 */
4347int devlink_resource_size_get(struct devlink *devlink,
4348 u64 resource_id,
4349 u64 *p_resource_size)
4350{
4351 struct devlink_resource *resource;
4352 int err = 0;
4353
4354 mutex_lock(&devlink->lock);
4355 resource = devlink_resource_find(devlink, NULL, resource_id);
4356 if (!resource) {
4357 err = -EINVAL;
4358 goto out;
4359 }
4360 *p_resource_size = resource->size_new;
4361 resource->size = resource->size_new;
4362out:
4363 mutex_unlock(&devlink->lock);
4364 return err;
4365}
4366EXPORT_SYMBOL_GPL(devlink_resource_size_get);
4367
56dc7cd0
AS		 4368/**
4369 * devlink_dpipe_table_resource_set - set the resource id
4370 *
4371 * @devlink: devlink
4372 * @table_name: table name
4373 * @resource_id: resource id
4374 * @resource_units: number of resource's units consumed per table's entry
4375 */
4376int devlink_dpipe_table_resource_set(struct devlink *devlink,
4377 const char *table_name, u64 resource_id,
4378 u64 resource_units)
4379{
4380 struct devlink_dpipe_table *table;
4381 int err = 0;
4382
4383 mutex_lock(&devlink->lock);
4384 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
4385 table_name);
4386 if (!table) {
4387 err = -EINVAL;
4388 goto out;
4389 }
4390 table->resource_id = resource_id;
4391 table->resource_units = resource_units;
4392 table->resource_valid = true;
4393out:
4394 mutex_unlock(&devlink->lock);
4395 return err;
4396}
4397EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
4398
fc56be47
JP		 4399/**
4400 * devlink_resource_occ_get_register - register occupancy getter
4401 *
4402 * @devlink: devlink
4403 * @resource_id: resource id
4404 * @occ_get: occupancy getter callback
4405 * @occ_get_priv: occupancy getter callback priv
4406 */
4407void devlink_resource_occ_get_register(struct devlink *devlink,
4408 u64 resource_id,
4409 devlink_resource_occ_get_t *occ_get,
4410 void *occ_get_priv)
4411{
4412 struct devlink_resource *resource;
4413
4414 mutex_lock(&devlink->lock);
4415 resource = devlink_resource_find(devlink, NULL, resource_id);
4416 if (WARN_ON(!resource))
4417 goto out;
4418 WARN_ON(resource->occ_get);
4419
4420 resource->occ_get = occ_get;
4421 resource->occ_get_priv = occ_get_priv;
4422out:
4423 mutex_unlock(&devlink->lock);
4424}
4425EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
4426
4427/**
4428 * devlink_resource_occ_get_unregister - unregister occupancy getter
4429 *
4430 * @devlink: devlink
4431 * @resource_id: resource id
4432 */
4433void devlink_resource_occ_get_unregister(struct devlink *devlink,
4434 u64 resource_id)
4435{
4436 struct devlink_resource *resource;
4437
4438 mutex_lock(&devlink->lock);
4439 resource = devlink_resource_find(devlink, NULL, resource_id);
4440 if (WARN_ON(!resource))
4441 goto out;
4442 WARN_ON(!resource->occ_get);
4443
4444 resource->occ_get = NULL;
4445 resource->occ_get_priv = NULL;
4446out:
4447 mutex_unlock(&devlink->lock);
4448}
4449EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
4450
eabaef18
MS		 4451/**
4452 * devlink_params_register - register configuration parameters
4453 *
4454 * @devlink: devlink
4455 * @params: configuration parameters array
4456 * @params_count: number of parameters provided
4457 *
4458 * Register the configuration parameters supported by the driver.
4459 */
4460int devlink_params_register(struct devlink *devlink,
4461 const struct devlink_param *params,
4462 size_t params_count)
4463{
4464 const struct devlink_param *param = params;
4465 int i;
4466 int err;
4467
4468 mutex_lock(&devlink->lock);
4469 for (i = 0; i < params_count; i++, param++) {
4470 if (!param || !param->name || !param->supported_cmodes) {
4471 err = -EINVAL;
4472 goto rollback;
4473 }
4474 if (param->generic) {
4475 err = devlink_param_generic_verify(param);
4476 if (err)
4477 goto rollback;
4478 } else {
4479 err = devlink_param_driver_verify(param);
4480 if (err)
4481 goto rollback;
4482 }
4483 err = devlink_param_register_one(devlink, param);
4484 if (err)
4485 goto rollback;
4486 }
4487
4488 mutex_unlock(&devlink->lock);
4489 return 0;
4490
4491rollback:
4492 if (!i)
4493 goto unlock;
4494 for (param--; i > 0; i--, param--)
4495 devlink_param_unregister_one(devlink, param);
4496unlock:
4497 mutex_unlock(&devlink->lock);
4498 return err;
4499}
4500EXPORT_SYMBOL_GPL(devlink_params_register);
4501
4502/**
4503 * devlink_params_unregister - unregister configuration parameters
4504 * @devlink: devlink
4505 * @params: configuration parameters to unregister
4506 * @params_count: number of parameters provided
4507 */
4508void devlink_params_unregister(struct devlink *devlink,
4509 const struct devlink_param *params,
4510 size_t params_count)
4511{
4512 const struct devlink_param *param = params;
4513 int i;
4514
4515 mutex_lock(&devlink->lock);
4516 for (i = 0; i < params_count; i++, param++)
4517 devlink_param_unregister_one(devlink, param);
4518 mutex_unlock(&devlink->lock);
4519}
4520EXPORT_SYMBOL_GPL(devlink_params_unregister);
4521
ec01aeb1
MS		 4522/**
4523 * devlink_param_driverinit_value_get - get configuration parameter
4524 * value for driver initializing
4525 *
4526 * @devlink: devlink
4527 * @param_id: parameter ID
4528 * @init_val: value of parameter in driverinit configuration mode
4529 *
4530 * This function should be used by the driver to get driverinit
4531 * configuration for initialization after reload command.
4532 */
4533int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
4534 union devlink_param_value *init_val)
4535{
4536 struct devlink_param_item *param_item;
4537
4538 if (!devlink->ops || !devlink->ops->reload)
4539 return -EOPNOTSUPP;
4540
4541 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
4542 if (!param_item)
4543 return -EINVAL;
4544
4545 if (!param_item->driverinit_value_valid ||
4546 !devlink_param_cmode_is_supported(param_item->param,
4547 DEVLINK_PARAM_CMODE_DRIVERINIT))
4548 return -EOPNOTSUPP;
4549
4550 *init_val = param_item->driverinit_value;
4551
4552 return 0;
4553}
4554EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
4555
4556/**
4557 * devlink_param_driverinit_value_set - set value of configuration
4558 * parameter for driverinit
4559 * configuration mode
4560 *
4561 * @devlink: devlink
4562 * @param_id: parameter ID
4563 * @init_val: value of parameter to set for driverinit configuration mode
4564 *
4565 * This function should be used by the driver to set driverinit
4566 * configuration mode default value.
4567 */
4568int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
4569 union devlink_param_value init_val)
4570{
4571 struct devlink_param_item *param_item;
4572
4573 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
4574 if (!param_item)
4575 return -EINVAL;
4576
4577 if (!devlink_param_cmode_is_supported(param_item->param,
4578 DEVLINK_PARAM_CMODE_DRIVERINIT))
4579 return -EOPNOTSUPP;
4580
4581 param_item->driverinit_value = init_val;
4582 param_item->driverinit_value_valid = true;
4583
ea601e17 4584 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 4585 return 0;
4586}
4587EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
4588
ea601e17
MS		 4589/**
4590 * devlink_param_value_changed - notify devlink on a parameter's value
4591 * change. Should be called by the driver
4592 * right after the change.
4593 *
4594 * @devlink: devlink
4595 * @param_id: parameter ID
4596 *
4597 * This function should be used by the driver to notify devlink on value
4598 * change, excluding driverinit configuration mode.
4599 * For driverinit configuration mode driver should use the function
4600 * devlink_param_driverinit_value_set() instead.
4601 */
4602void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
4603{
4604 struct devlink_param_item *param_item;
4605
4606 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
4607 WARN_ON(!param_item);
4608
4609 devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
4610}
4611EXPORT_SYMBOL_GPL(devlink_param_value_changed);
4612
b16ebe92
AV		 4613/**
4614 * devlink_region_create - create a new address region
4615 *
4616 * @devlink: devlink
4617 * @region_name: region name
4618 * @region_max_snapshots: Maximum supported number of snapshots for region
4619 * @region_size: size of region
4620 */
4621struct devlink_region *devlink_region_create(struct devlink *devlink,
4622 const char *region_name,
4623 u32 region_max_snapshots,
4624 u64 region_size)
4625{
4626 struct devlink_region *region;
4627 int err = 0;
4628
4629 mutex_lock(&devlink->lock);
4630
4631 if (devlink_region_get_by_name(devlink, region_name)) {
4632 err = -EEXIST;
4633 goto unlock;
4634 }
4635
4636 region = kzalloc(sizeof(*region), GFP_KERNEL);
4637 if (!region) {
4638 err = -ENOMEM;
4639 goto unlock;
4640 }
4641
4642 region->devlink = devlink;
4643 region->max_snapshots = region_max_snapshots;
4644 region->name = region_name;
4645 region->size = region_size;
4646 INIT_LIST_HEAD(&region->snapshot_list);
4647 list_add_tail(&region->list, &devlink->region_list);
866319bb 4648 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 4649
4650 mutex_unlock(&devlink->lock);
4651 return region;
4652
4653unlock:
4654 mutex_unlock(&devlink->lock);
4655 return ERR_PTR(err);
4656}
4657EXPORT_SYMBOL_GPL(devlink_region_create);
4658
4659/**
4660 * devlink_region_destroy - destroy address region
4661 *
4662 * @region: devlink region to destroy
4663 */
4664void devlink_region_destroy(struct devlink_region *region)
4665{
4666 struct devlink *devlink = region->devlink;
d7e52722 4667 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 4668
4669 mutex_lock(&devlink->lock);
d7e52722
AV		 4670
4671 /* Free all snapshots of region */
4672 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
4673 devlink_region_snapshot_del(snapshot);
4674
b16ebe92 4675 list_del(&region->list);
866319bb
AV		 4676
4677 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 4678 mutex_unlock(&devlink->lock);
4679 kfree(region);
4680}
4681EXPORT_SYMBOL_GPL(devlink_region_destroy);
4682
ccadfa44
AV		 4683/**
4684 * devlink_region_shapshot_id_get - get snapshot ID
4685 *
4686 * This callback should be called when adding a new snapshot,
4687 * Driver should use the same id for multiple snapshots taken
4688 * on multiple regions at the same time/by the same trigger.
4689 *
4690 * @devlink: devlink
4691 */
4692u32 devlink_region_shapshot_id_get(struct devlink *devlink)
4693{
4694 u32 id;
4695
4696 mutex_lock(&devlink->lock);
4697 id = ++devlink->snapshot_id;
4698 mutex_unlock(&devlink->lock);
4699
4700 return id;
4701}
4702EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get);
4703
d7e52722
AV		 4704/**
4705 * devlink_region_snapshot_create - create a new snapshot
4706 * This will add a new snapshot of a region. The snapshot
4707 * will be stored on the region struct and can be accessed
4708 * from devlink. This is useful for future analyses of snapshots.
4709 * Multiple snapshots can be created on a region.
4710 * The @snapshot_id should be obtained using the getter function.
4711 *
4712 * @devlink_region: devlink region of the snapshot
4713 * @data_len: size of snapshot data
4714 * @data: snapshot data
4715 * @snapshot_id: snapshot id to be created
4716 * @data_destructor: pointer to destructor function to free data
4717 */
4718int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len,
4719 u8 *data, u32 snapshot_id,
4720 devlink_snapshot_data_dest_t *data_destructor)
4721{
4722 struct devlink *devlink = region->devlink;
4723 struct devlink_snapshot *snapshot;
4724 int err;
4725
4726 mutex_lock(&devlink->lock);
4727
4728 /* check if region can hold one more snapshot */
4729 if (region->cur_snapshots == region->max_snapshots) {
4730 err = -ENOMEM;
4731 goto unlock;
4732 }
4733
4734 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4735 err = -EEXIST;
4736 goto unlock;
4737 }
4738
4739 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
4740 if (!snapshot) {
4741 err = -ENOMEM;
4742 goto unlock;
4743 }
4744
4745 snapshot->id = snapshot_id;
4746 snapshot->region = region;
4747 snapshot->data = data;
4748 snapshot->data_len = data_len;
4749 snapshot->data_destructor = data_destructor;
4750
4751 list_add_tail(&snapshot->list, &region->snapshot_list);
4752
4753 region->cur_snapshots++;
4754
866319bb 4755 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 4756 mutex_unlock(&devlink->lock);
4757 return 0;
4758
4759unlock:
4760 mutex_unlock(&devlink->lock);
4761 return err;
4762}
4763EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
4764
bfcd3a46
JP		 4765static int __init devlink_module_init(void)
4766{
489111e5 4767 return genl_register_family(&devlink_nl_family);
bfcd3a46
JP		 4768}
4769
4770static void __exit devlink_module_exit(void)
4771{
4772 genl_unregister_family(&devlink_nl_family);
4773}
4774
4775module_init(devlink_module_init);
4776module_exit(devlink_module_exit);
4777
4778MODULE_LICENSE("GPL v2");
4779MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
4780MODULE_DESCRIPTION("Network physical device Netlink interface");
4781MODULE_ALIAS_GENL_FAMILY(DEVLINK_GENL_NAME);
Linux 6.x block layer and io_uring tree(s)