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Merge tag 'mmc-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[linux-2.6-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
32EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
bfcd3a46
JP		 33
34static LIST_HEAD(devlink_list);
35
36/* devlink_mutex
37 *
38 * An overall lock guarding every operation coming from userspace.
39 * It also guards devlink devices list and it is taken when
40 * driver registers/unregisters it.
41 */
42static DEFINE_MUTEX(devlink_mutex);
43
44/* devlink_port_mutex
45 *
46 * Shared lock to guard lists of ports in all devlink devices.
47 */
48static DEFINE_MUTEX(devlink_port_mutex);
49
50static struct net *devlink_net(const struct devlink *devlink)
51{
52 return read_pnet(&devlink->_net);
53}
54
55static void devlink_net_set(struct devlink *devlink, struct net *net)
56{
57 write_pnet(&devlink->_net, net);
58}
59
60static struct devlink *devlink_get_from_attrs(struct net *net,
61 struct nlattr **attrs)
62{
63 struct devlink *devlink;
64 char *busname;
65 char *devname;
66
67 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
68 return ERR_PTR(-EINVAL);
69
70 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
71 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
72
73 list_for_each_entry(devlink, &devlink_list, list) {
74 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
75 strcmp(dev_name(devlink->dev), devname) == 0 &&
76 net_eq(devlink_net(devlink), net))
77 return devlink;
78 }
79
80 return ERR_PTR(-ENODEV);
81}
82
83static struct devlink *devlink_get_from_info(struct genl_info *info)
84{
85 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
86}
87
88static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
89 int port_index)
90{
91 struct devlink_port *devlink_port;
92
93 list_for_each_entry(devlink_port, &devlink->port_list, list) {
94 if (devlink_port->index == port_index)
95 return devlink_port;
96 }
97 return NULL;
98}
99
100static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
101{
102 return devlink_port_get_by_index(devlink, port_index);
103}
104
105static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
106 struct nlattr **attrs)
107{
108 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
109 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
110 struct devlink_port *devlink_port;
111
112 devlink_port = devlink_port_get_by_index(devlink, port_index);
113 if (!devlink_port)
114 return ERR_PTR(-ENODEV);
115 return devlink_port;
116 }
117 return ERR_PTR(-EINVAL);
118}
119
120static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
121 struct genl_info *info)
122{
123 return devlink_port_get_from_attrs(devlink, info->attrs);
124}
125
bf797471
JP		 126struct devlink_sb {
127 struct list_head list;
128 unsigned int index;
129 u32 size;
130 u16 ingress_pools_count;
131 u16 egress_pools_count;
132 u16 ingress_tc_count;
133 u16 egress_tc_count;
134};
135
136static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
137{
138 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
139}
140
141static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
142 unsigned int sb_index)
143{
144 struct devlink_sb *devlink_sb;
145
146 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
147 if (devlink_sb->index == sb_index)
148 return devlink_sb;
149 }
150 return NULL;
151}
152
153static bool devlink_sb_index_exists(struct devlink *devlink,
154 unsigned int sb_index)
155{
156 return devlink_sb_get_by_index(devlink, sb_index);
157}
158
159static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
160 struct nlattr **attrs)
161{
162 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
163 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
164 struct devlink_sb *devlink_sb;
165
166 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
167 if (!devlink_sb)
168 return ERR_PTR(-ENODEV);
169 return devlink_sb;
170 }
171 return ERR_PTR(-EINVAL);
172}
173
174static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
175 struct genl_info *info)
176{
177 return devlink_sb_get_from_attrs(devlink, info->attrs);
178}
179
180static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
181 struct nlattr **attrs,
182 u16 *p_pool_index)
183{
184 u16 val;
185
186 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
187 return -EINVAL;
188
189 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
190 if (val >= devlink_sb_pool_count(devlink_sb))
191 return -EINVAL;
192 *p_pool_index = val;
193 return 0;
194}
195
196static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
197 struct genl_info *info,
198 u16 *p_pool_index)
199{
200 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
201 p_pool_index);
202}
203
204static int
205devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
206 enum devlink_sb_pool_type *p_pool_type)
207{
208 u8 val;
209
210 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
211 return -EINVAL;
212
213 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
214 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
215 val != DEVLINK_SB_POOL_TYPE_EGRESS)
216 return -EINVAL;
217 *p_pool_type = val;
218 return 0;
219}
220
221static int
222devlink_sb_pool_type_get_from_info(struct genl_info *info,
223 enum devlink_sb_pool_type *p_pool_type)
224{
225 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
226}
227
228static int
229devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
230 enum devlink_sb_threshold_type *p_th_type)
231{
232 u8 val;
233
234 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
235 return -EINVAL;
236
237 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
238 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
239 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
240 return -EINVAL;
241 *p_th_type = val;
242 return 0;
243}
244
245static int
246devlink_sb_th_type_get_from_info(struct genl_info *info,
247 enum devlink_sb_threshold_type *p_th_type)
248{
249 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
250}
251
252static int
253devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
254 struct nlattr **attrs,
255 enum devlink_sb_pool_type pool_type,
256 u16 *p_tc_index)
257{
258 u16 val;
259
260 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
261 return -EINVAL;
262
263 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
264 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
265 val >= devlink_sb->ingress_tc_count)
266 return -EINVAL;
267 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
268 val >= devlink_sb->egress_tc_count)
269 return -EINVAL;
270 *p_tc_index = val;
271 return 0;
272}
273
274static int
275devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
276 struct genl_info *info,
277 enum devlink_sb_pool_type pool_type,
278 u16 *p_tc_index)
279{
280 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
281 pool_type, p_tc_index);
282}
283
1fc2257e
JP		 284#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
285#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 286#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
df38dafd
JP		 287#define DEVLINK_NL_FLAG_LOCK_PORTS BIT(3)
288 /* port is not needed but we need to ensure they don't
289 * change in the middle of command
290 */
bfcd3a46
JP		 291
292static int devlink_nl_pre_doit(const struct genl_ops *ops,
293 struct sk_buff *skb, struct genl_info *info)
294{
295 struct devlink *devlink;
296
297 mutex_lock(&devlink_mutex);
298 devlink = devlink_get_from_info(info);
299 if (IS_ERR(devlink)) {
300 mutex_unlock(&devlink_mutex);
301 return PTR_ERR(devlink);
302 }
1fc2257e
JP		 303 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
304 info->user_ptr[0] = devlink;
305 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 306 struct devlink_port *devlink_port;
307
308 mutex_lock(&devlink_port_mutex);
309 devlink_port = devlink_port_get_from_info(devlink, info);
310 if (IS_ERR(devlink_port)) {
311 mutex_unlock(&devlink_port_mutex);
312 mutex_unlock(&devlink_mutex);
313 return PTR_ERR(devlink_port);
314 }
1fc2257e 315 info->user_ptr[0] = devlink_port;
bfcd3a46 316 }
df38dafd
JP		 317 if (ops->internal_flags & DEVLINK_NL_FLAG_LOCK_PORTS) {
318 mutex_lock(&devlink_port_mutex);
319 }
bf797471
JP		 320 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
321 struct devlink_sb *devlink_sb;
322
323 devlink_sb = devlink_sb_get_from_info(devlink, info);
324 if (IS_ERR(devlink_sb)) {
325 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT)
326 mutex_unlock(&devlink_port_mutex);
327 mutex_unlock(&devlink_mutex);
328 return PTR_ERR(devlink_sb);
329 }
330 info->user_ptr[1] = devlink_sb;
331 }
bfcd3a46
JP		 332 return 0;
333}
334
335static void devlink_nl_post_doit(const struct genl_ops *ops,
336 struct sk_buff *skb, struct genl_info *info)
337{
df38dafd
JP		 338 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT ||
339 ops->internal_flags & DEVLINK_NL_FLAG_LOCK_PORTS)
bfcd3a46
JP		 340 mutex_unlock(&devlink_port_mutex);
341 mutex_unlock(&devlink_mutex);
342}
343
489111e5 344static struct genl_family devlink_nl_family;
bfcd3a46
JP		 345
346enum devlink_multicast_groups {
347 DEVLINK_MCGRP_CONFIG,
348};
349
350static const struct genl_multicast_group devlink_nl_mcgrps[] = {
351 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
352};
353
354static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
355{
356 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
357 return -EMSGSIZE;
358 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
359 return -EMSGSIZE;
360 return 0;
361}
362
363static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
364 enum devlink_command cmd, u32 portid,
365 u32 seq, int flags)
366{
367 void *hdr;
368
369 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
370 if (!hdr)
371 return -EMSGSIZE;
372
373 if (devlink_nl_put_handle(msg, devlink))
374 goto nla_put_failure;
375
376 genlmsg_end(msg, hdr);
377 return 0;
378
379nla_put_failure:
380 genlmsg_cancel(msg, hdr);
381 return -EMSGSIZE;
382}
383
384static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
385{
386 struct sk_buff *msg;
387 int err;
388
389 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
390
391 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
392 if (!msg)
393 return;
394
395 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
396 if (err) {
397 nlmsg_free(msg);
398 return;
399 }
400
401 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
402 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
403}
404
405static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
406 struct devlink_port *devlink_port,
407 enum devlink_command cmd, u32 portid,
408 u32 seq, int flags)
409{
410 void *hdr;
411
412 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
413 if (!hdr)
414 return -EMSGSIZE;
415
416 if (devlink_nl_put_handle(msg, devlink))
417 goto nla_put_failure;
418 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
419 goto nla_put_failure;
420 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
421 goto nla_put_failure;
422 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
423 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
424 devlink_port->desired_type))
425 goto nla_put_failure;
426 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
427 struct net_device *netdev = devlink_port->type_dev;
428
429 if (netdev &&
430 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
431 netdev->ifindex) ||
432 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
433 netdev->name)))
434 goto nla_put_failure;
435 }
436 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
437 struct ib_device *ibdev = devlink_port->type_dev;
438
439 if (ibdev &&
440 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
441 ibdev->name))
442 goto nla_put_failure;
443 }
444 if (devlink_port->split &&
445 nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
446 devlink_port->split_group))
447 goto nla_put_failure;
448
449 genlmsg_end(msg, hdr);
450 return 0;
451
452nla_put_failure:
453 genlmsg_cancel(msg, hdr);
454 return -EMSGSIZE;
455}
456
457static void devlink_port_notify(struct devlink_port *devlink_port,
458 enum devlink_command cmd)
459{
460 struct devlink *devlink = devlink_port->devlink;
461 struct sk_buff *msg;
462 int err;
463
464 if (!devlink_port->registered)
465 return;
466
467 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
468
469 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
470 if (!msg)
471 return;
472
473 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
474 if (err) {
475 nlmsg_free(msg);
476 return;
477 }
478
479 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
480 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
481}
482
483static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
484{
485 struct devlink *devlink = info->user_ptr[0];
486 struct sk_buff *msg;
487 int err;
488
489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
490 if (!msg)
491 return -ENOMEM;
492
493 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
494 info->snd_portid, info->snd_seq, 0);
495 if (err) {
496 nlmsg_free(msg);
497 return err;
498 }
499
500 return genlmsg_reply(msg, info);
501}
502
503static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
504 struct netlink_callback *cb)
505{
506 struct devlink *devlink;
507 int start = cb->args[0];
508 int idx = 0;
509 int err;
510
511 mutex_lock(&devlink_mutex);
512 list_for_each_entry(devlink, &devlink_list, list) {
513 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
514 continue;
515 if (idx < start) {
516 idx++;
517 continue;
518 }
519 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
520 NETLINK_CB(cb->skb).portid,
521 cb->nlh->nlmsg_seq, NLM_F_MULTI);
522 if (err)
523 goto out;
524 idx++;
525 }
526out:
527 mutex_unlock(&devlink_mutex);
528
529 cb->args[0] = idx;
530 return msg->len;
531}
532
533static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
534 struct genl_info *info)
535{
1fc2257e
JP		 536 struct devlink_port *devlink_port = info->user_ptr[0];
537 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 538 struct sk_buff *msg;
539 int err;
540
541 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
542 if (!msg)
543 return -ENOMEM;
544
545 err = devlink_nl_port_fill(msg, devlink, devlink_port,
546 DEVLINK_CMD_PORT_NEW,
547 info->snd_portid, info->snd_seq, 0);
548 if (err) {
549 nlmsg_free(msg);
550 return err;
551 }
552
553 return genlmsg_reply(msg, info);
554}
555
556static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
557 struct netlink_callback *cb)
558{
559 struct devlink *devlink;
560 struct devlink_port *devlink_port;
561 int start = cb->args[0];
562 int idx = 0;
563 int err;
564
565 mutex_lock(&devlink_mutex);
566 mutex_lock(&devlink_port_mutex);
567 list_for_each_entry(devlink, &devlink_list, list) {
568 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
569 continue;
570 list_for_each_entry(devlink_port, &devlink->port_list, list) {
571 if (idx < start) {
572 idx++;
573 continue;
574 }
575 err = devlink_nl_port_fill(msg, devlink, devlink_port,
576 DEVLINK_CMD_NEW,
577 NETLINK_CB(cb->skb).portid,
578 cb->nlh->nlmsg_seq,
579 NLM_F_MULTI);
580 if (err)
581 goto out;
582 idx++;
583 }
584 }
585out:
586 mutex_unlock(&devlink_port_mutex);
587 mutex_unlock(&devlink_mutex);
588
589 cb->args[0] = idx;
590 return msg->len;
591}
592
593static int devlink_port_type_set(struct devlink *devlink,
594 struct devlink_port *devlink_port,
595 enum devlink_port_type port_type)
596
597{
598 int err;
599
600 if (devlink->ops && devlink->ops->port_type_set) {
601 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
602 return -EINVAL;
6edf1017
ER		 603 if (port_type == devlink_port->type)
604 return 0;
bfcd3a46
JP		 605 err = devlink->ops->port_type_set(devlink_port, port_type);
606 if (err)
607 return err;
608 devlink_port->desired_type = port_type;
609 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
610 return 0;
611 }
612 return -EOPNOTSUPP;
613}
614
615static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
616 struct genl_info *info)
617{
1fc2257e
JP		 618 struct devlink_port *devlink_port = info->user_ptr[0];
619 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 620 int err;
621
622 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
623 enum devlink_port_type port_type;
624
625 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
626 err = devlink_port_type_set(devlink, devlink_port, port_type);
627 if (err)
628 return err;
629 }
630 return 0;
631}
632
633static int devlink_port_split(struct devlink *devlink,
634 u32 port_index, u32 count)
635
636{
637 if (devlink->ops && devlink->ops->port_split)
638 return devlink->ops->port_split(devlink, port_index, count);
639 return -EOPNOTSUPP;
640}
641
642static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
643 struct genl_info *info)
644{
645 struct devlink *devlink = info->user_ptr[0];
646 u32 port_index;
647 u32 count;
648
649 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
650 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
651 return -EINVAL;
652
653 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
654 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
655 return devlink_port_split(devlink, port_index, count);
656}
657
658static int devlink_port_unsplit(struct devlink *devlink, u32 port_index)
659
660{
661 if (devlink->ops && devlink->ops->port_unsplit)
662 return devlink->ops->port_unsplit(devlink, port_index);
663 return -EOPNOTSUPP;
664}
665
666static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
667 struct genl_info *info)
668{
669 struct devlink *devlink = info->user_ptr[0];
670 u32 port_index;
671
672 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
673 return -EINVAL;
674
675 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
676 return devlink_port_unsplit(devlink, port_index);
677}
678
bf797471
JP		 679static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
680 struct devlink_sb *devlink_sb,
681 enum devlink_command cmd, u32 portid,
682 u32 seq, int flags)
683{
684 void *hdr;
685
686 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
687 if (!hdr)
688 return -EMSGSIZE;
689
690 if (devlink_nl_put_handle(msg, devlink))
691 goto nla_put_failure;
692 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
693 goto nla_put_failure;
694 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
695 goto nla_put_failure;
696 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
697 devlink_sb->ingress_pools_count))
698 goto nla_put_failure;
699 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
700 devlink_sb->egress_pools_count))
701 goto nla_put_failure;
702 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
703 devlink_sb->ingress_tc_count))
704 goto nla_put_failure;
705 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
706 devlink_sb->egress_tc_count))
707 goto nla_put_failure;
708
709 genlmsg_end(msg, hdr);
710 return 0;
711
712nla_put_failure:
713 genlmsg_cancel(msg, hdr);
714 return -EMSGSIZE;
715}
716
717static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
718 struct genl_info *info)
719{
720 struct devlink *devlink = info->user_ptr[0];
721 struct devlink_sb *devlink_sb = info->user_ptr[1];
722 struct sk_buff *msg;
723 int err;
724
725 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
726 if (!msg)
727 return -ENOMEM;
728
729 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
730 DEVLINK_CMD_SB_NEW,
731 info->snd_portid, info->snd_seq, 0);
732 if (err) {
733 nlmsg_free(msg);
734 return err;
735 }
736
737 return genlmsg_reply(msg, info);
738}
739
740static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
741 struct netlink_callback *cb)
742{
743 struct devlink *devlink;
744 struct devlink_sb *devlink_sb;
745 int start = cb->args[0];
746 int idx = 0;
747 int err;
748
749 mutex_lock(&devlink_mutex);
750 list_for_each_entry(devlink, &devlink_list, list) {
751 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
752 continue;
753 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
754 if (idx < start) {
755 idx++;
756 continue;
757 }
758 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
759 DEVLINK_CMD_SB_NEW,
760 NETLINK_CB(cb->skb).portid,
761 cb->nlh->nlmsg_seq,
762 NLM_F_MULTI);
763 if (err)
764 goto out;
765 idx++;
766 }
767 }
768out:
769 mutex_unlock(&devlink_mutex);
770
771 cb->args[0] = idx;
772 return msg->len;
773}
774
775static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
776 struct devlink_sb *devlink_sb,
777 u16 pool_index, enum devlink_command cmd,
778 u32 portid, u32 seq, int flags)
779{
780 struct devlink_sb_pool_info pool_info;
781 void *hdr;
782 int err;
783
784 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
785 pool_index, &pool_info);
786 if (err)
787 return err;
788
789 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
790 if (!hdr)
791 return -EMSGSIZE;
792
793 if (devlink_nl_put_handle(msg, devlink))
794 goto nla_put_failure;
795 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
796 goto nla_put_failure;
797 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
798 goto nla_put_failure;
799 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
800 goto nla_put_failure;
801 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
802 goto nla_put_failure;
803 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
804 pool_info.threshold_type))
805 goto nla_put_failure;
806
807 genlmsg_end(msg, hdr);
808 return 0;
809
810nla_put_failure:
811 genlmsg_cancel(msg, hdr);
812 return -EMSGSIZE;
813}
814
815static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
816 struct genl_info *info)
817{
818 struct devlink *devlink = info->user_ptr[0];
819 struct devlink_sb *devlink_sb = info->user_ptr[1];
820 struct sk_buff *msg;
821 u16 pool_index;
822 int err;
823
824 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
825 &pool_index);
826 if (err)
827 return err;
828
829 if (!devlink->ops || !devlink->ops->sb_pool_get)
830 return -EOPNOTSUPP;
831
832 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
833 if (!msg)
834 return -ENOMEM;
835
836 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
837 DEVLINK_CMD_SB_POOL_NEW,
838 info->snd_portid, info->snd_seq, 0);
839 if (err) {
840 nlmsg_free(msg);
841 return err;
842 }
843
844 return genlmsg_reply(msg, info);
845}
846
847static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
848 struct devlink *devlink,
849 struct devlink_sb *devlink_sb,
850 u32 portid, u32 seq)
851{
852 u16 pool_count = devlink_sb_pool_count(devlink_sb);
853 u16 pool_index;
854 int err;
855
856 for (pool_index = 0; pool_index < pool_count; pool_index++) {
857 if (*p_idx < start) {
858 (*p_idx)++;
859 continue;
860 }
861 err = devlink_nl_sb_pool_fill(msg, devlink,
862 devlink_sb,
863 pool_index,
864 DEVLINK_CMD_SB_POOL_NEW,
865 portid, seq, NLM_F_MULTI);
866 if (err)
867 return err;
868 (*p_idx)++;
869 }
870 return 0;
871}
872
873static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
874 struct netlink_callback *cb)
875{
876 struct devlink *devlink;
877 struct devlink_sb *devlink_sb;
878 int start = cb->args[0];
879 int idx = 0;
880 int err;
881
882 mutex_lock(&devlink_mutex);
883 list_for_each_entry(devlink, &devlink_list, list) {
884 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
885 !devlink->ops || !devlink->ops->sb_pool_get)
886 continue;
887 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
888 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
889 devlink_sb,
890 NETLINK_CB(cb->skb).portid,
891 cb->nlh->nlmsg_seq);
892 if (err && err != -EOPNOTSUPP)
893 goto out;
894 }
895 }
896out:
897 mutex_unlock(&devlink_mutex);
898
899 cb->args[0] = idx;
900 return msg->len;
901}
902
903static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
904 u16 pool_index, u32 size,
905 enum devlink_sb_threshold_type threshold_type)
906
907{
908 const struct devlink_ops *ops = devlink->ops;
909
910 if (ops && ops->sb_pool_set)
911 return ops->sb_pool_set(devlink, sb_index, pool_index,
912 size, threshold_type);
913 return -EOPNOTSUPP;
914}
915
916static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
917 struct genl_info *info)
918{
919 struct devlink *devlink = info->user_ptr[0];
920 struct devlink_sb *devlink_sb = info->user_ptr[1];
921 enum devlink_sb_threshold_type threshold_type;
922 u16 pool_index;
923 u32 size;
924 int err;
925
926 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
927 &pool_index);
928 if (err)
929 return err;
930
931 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
932 if (err)
933 return err;
934
935 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
936 return -EINVAL;
937
938 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
939 return devlink_sb_pool_set(devlink, devlink_sb->index,
940 pool_index, size, threshold_type);
941}
942
943static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
944 struct devlink *devlink,
945 struct devlink_port *devlink_port,
946 struct devlink_sb *devlink_sb,
947 u16 pool_index,
948 enum devlink_command cmd,
949 u32 portid, u32 seq, int flags)
950{
df38dafd 951 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 952 u32 threshold;
953 void *hdr;
954 int err;
955
df38dafd
JP		 956 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
957 pool_index, &threshold);
bf797471
JP		 958 if (err)
959 return err;
960
961 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
962 if (!hdr)
963 return -EMSGSIZE;
964
965 if (devlink_nl_put_handle(msg, devlink))
966 goto nla_put_failure;
967 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
968 goto nla_put_failure;
969 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
970 goto nla_put_failure;
971 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
972 goto nla_put_failure;
973 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
974 goto nla_put_failure;
975
df38dafd
JP		 976 if (ops->sb_occ_port_pool_get) {
977 u32 cur;
978 u32 max;
979
980 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
981 pool_index, &cur, &max);
982 if (err && err != -EOPNOTSUPP)
983 return err;
984 if (!err) {
985 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
986 goto nla_put_failure;
987 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
988 goto nla_put_failure;
989 }
990 }
991
bf797471
JP		 992 genlmsg_end(msg, hdr);
993 return 0;
994
995nla_put_failure:
996 genlmsg_cancel(msg, hdr);
997 return -EMSGSIZE;
998}
999
1000static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1001 struct genl_info *info)
1002{
1003 struct devlink_port *devlink_port = info->user_ptr[0];
1004 struct devlink *devlink = devlink_port->devlink;
1005 struct devlink_sb *devlink_sb = info->user_ptr[1];
1006 struct sk_buff *msg;
1007 u16 pool_index;
1008 int err;
1009
1010 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1011 &pool_index);
1012 if (err)
1013 return err;
1014
1015 if (!devlink->ops || !devlink->ops->sb_port_pool_get)
1016 return -EOPNOTSUPP;
1017
1018 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1019 if (!msg)
1020 return -ENOMEM;
1021
1022 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1023 devlink_sb, pool_index,
1024 DEVLINK_CMD_SB_PORT_POOL_NEW,
1025 info->snd_portid, info->snd_seq, 0);
1026 if (err) {
1027 nlmsg_free(msg);
1028 return err;
1029 }
1030
1031 return genlmsg_reply(msg, info);
1032}
1033
1034static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1035 struct devlink *devlink,
1036 struct devlink_sb *devlink_sb,
1037 u32 portid, u32 seq)
1038{
1039 struct devlink_port *devlink_port;
1040 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1041 u16 pool_index;
1042 int err;
1043
1044 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1045 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1046 if (*p_idx < start) {
1047 (*p_idx)++;
1048 continue;
1049 }
1050 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1051 devlink_port,
1052 devlink_sb,
1053 pool_index,
1054 DEVLINK_CMD_SB_PORT_POOL_NEW,
1055 portid, seq,
1056 NLM_F_MULTI);
1057 if (err)
1058 return err;
1059 (*p_idx)++;
1060 }
1061 }
1062 return 0;
1063}
1064
1065static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1066 struct netlink_callback *cb)
1067{
1068 struct devlink *devlink;
1069 struct devlink_sb *devlink_sb;
1070 int start = cb->args[0];
1071 int idx = 0;
1072 int err;
1073
1074 mutex_lock(&devlink_mutex);
1075 mutex_lock(&devlink_port_mutex);
1076 list_for_each_entry(devlink, &devlink_list, list) {
1077 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1078 !devlink->ops || !devlink->ops->sb_port_pool_get)
1079 continue;
1080 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1081 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1082 devlink, devlink_sb,
1083 NETLINK_CB(cb->skb).portid,
1084 cb->nlh->nlmsg_seq);
1085 if (err && err != -EOPNOTSUPP)
1086 goto out;
1087 }
1088 }
1089out:
1090 mutex_unlock(&devlink_port_mutex);
1091 mutex_unlock(&devlink_mutex);
1092
1093 cb->args[0] = idx;
1094 return msg->len;
1095}
1096
1097static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1098 unsigned int sb_index, u16 pool_index,
1099 u32 threshold)
1100
1101{
1102 const struct devlink_ops *ops = devlink_port->devlink->ops;
1103
1104 if (ops && ops->sb_port_pool_set)
1105 return ops->sb_port_pool_set(devlink_port, sb_index,
1106 pool_index, threshold);
1107 return -EOPNOTSUPP;
1108}
1109
1110static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1111 struct genl_info *info)
1112{
1113 struct devlink_port *devlink_port = info->user_ptr[0];
1114 struct devlink_sb *devlink_sb = info->user_ptr[1];
1115 u16 pool_index;
1116 u32 threshold;
1117 int err;
1118
1119 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1120 &pool_index);
1121 if (err)
1122 return err;
1123
1124 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1125 return -EINVAL;
1126
1127 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1128 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1129 pool_index, threshold);
1130}
1131
1132static int
1133devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1134 struct devlink_port *devlink_port,
1135 struct devlink_sb *devlink_sb, u16 tc_index,
1136 enum devlink_sb_pool_type pool_type,
1137 enum devlink_command cmd,
1138 u32 portid, u32 seq, int flags)
1139{
df38dafd 1140 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1141 u16 pool_index;
1142 u32 threshold;
1143 void *hdr;
1144 int err;
1145
df38dafd
JP		 1146 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1147 tc_index, pool_type,
1148 &pool_index, &threshold);
bf797471
JP		 1149 if (err)
1150 return err;
1151
1152 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1153 if (!hdr)
1154 return -EMSGSIZE;
1155
1156 if (devlink_nl_put_handle(msg, devlink))
1157 goto nla_put_failure;
1158 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1159 goto nla_put_failure;
1160 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1161 goto nla_put_failure;
1162 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1163 goto nla_put_failure;
1164 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1165 goto nla_put_failure;
1166 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1167 goto nla_put_failure;
1168 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1169 goto nla_put_failure;
1170
df38dafd
JP		 1171 if (ops->sb_occ_tc_port_bind_get) {
1172 u32 cur;
1173 u32 max;
1174
1175 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1176 devlink_sb->index,
1177 tc_index, pool_type,
1178 &cur, &max);
1179 if (err && err != -EOPNOTSUPP)
1180 return err;
1181 if (!err) {
1182 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1183 goto nla_put_failure;
1184 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1185 goto nla_put_failure;
1186 }
1187 }
1188
bf797471
JP		 1189 genlmsg_end(msg, hdr);
1190 return 0;
1191
1192nla_put_failure:
1193 genlmsg_cancel(msg, hdr);
1194 return -EMSGSIZE;
1195}
1196
1197static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1198 struct genl_info *info)
1199{
1200 struct devlink_port *devlink_port = info->user_ptr[0];
1201 struct devlink *devlink = devlink_port->devlink;
1202 struct devlink_sb *devlink_sb = info->user_ptr[1];
1203 struct sk_buff *msg;
1204 enum devlink_sb_pool_type pool_type;
1205 u16 tc_index;
1206 int err;
1207
1208 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1209 if (err)
1210 return err;
1211
1212 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1213 pool_type, &tc_index);
1214 if (err)
1215 return err;
1216
1217 if (!devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
1218 return -EOPNOTSUPP;
1219
1220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1221 if (!msg)
1222 return -ENOMEM;
1223
1224 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1225 devlink_sb, tc_index, pool_type,
1226 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1227 info->snd_portid,
1228 info->snd_seq, 0);
1229 if (err) {
1230 nlmsg_free(msg);
1231 return err;
1232 }
1233
1234 return genlmsg_reply(msg, info);
1235}
1236
1237static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1238 int start, int *p_idx,
1239 struct devlink *devlink,
1240 struct devlink_sb *devlink_sb,
1241 u32 portid, u32 seq)
1242{
1243 struct devlink_port *devlink_port;
1244 u16 tc_index;
1245 int err;
1246
1247 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1248 for (tc_index = 0;
1249 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1250 if (*p_idx < start) {
1251 (*p_idx)++;
1252 continue;
1253 }
1254 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1255 devlink_port,
1256 devlink_sb,
1257 tc_index,
1258 DEVLINK_SB_POOL_TYPE_INGRESS,
1259 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1260 portid, seq,
1261 NLM_F_MULTI);
1262 if (err)
1263 return err;
1264 (*p_idx)++;
1265 }
1266 for (tc_index = 0;
1267 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1268 if (*p_idx < start) {
1269 (*p_idx)++;
1270 continue;
1271 }
1272 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1273 devlink_port,
1274 devlink_sb,
1275 tc_index,
1276 DEVLINK_SB_POOL_TYPE_EGRESS,
1277 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1278 portid, seq,
1279 NLM_F_MULTI);
1280 if (err)
1281 return err;
1282 (*p_idx)++;
1283 }
1284 }
1285 return 0;
1286}
1287
1288static int
1289devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1290 struct netlink_callback *cb)
1291{
1292 struct devlink *devlink;
1293 struct devlink_sb *devlink_sb;
1294 int start = cb->args[0];
1295 int idx = 0;
1296 int err;
1297
1298 mutex_lock(&devlink_mutex);
1299 mutex_lock(&devlink_port_mutex);
1300 list_for_each_entry(devlink, &devlink_list, list) {
1301 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1302 !devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
1303 continue;
1304 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1305 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1306 devlink,
1307 devlink_sb,
1308 NETLINK_CB(cb->skb).portid,
1309 cb->nlh->nlmsg_seq);
1310 if (err && err != -EOPNOTSUPP)
1311 goto out;
1312 }
1313 }
1314out:
1315 mutex_unlock(&devlink_port_mutex);
1316 mutex_unlock(&devlink_mutex);
1317
1318 cb->args[0] = idx;
1319 return msg->len;
1320}
1321
1322static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1323 unsigned int sb_index, u16 tc_index,
1324 enum devlink_sb_pool_type pool_type,
1325 u16 pool_index, u32 threshold)
1326
1327{
1328 const struct devlink_ops *ops = devlink_port->devlink->ops;
1329
1330 if (ops && ops->sb_tc_pool_bind_set)
1331 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1332 tc_index, pool_type,
1333 pool_index, threshold);
1334 return -EOPNOTSUPP;
1335}
1336
1337static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1338 struct genl_info *info)
1339{
1340 struct devlink_port *devlink_port = info->user_ptr[0];
1341 struct devlink_sb *devlink_sb = info->user_ptr[1];
1342 enum devlink_sb_pool_type pool_type;
1343 u16 tc_index;
1344 u16 pool_index;
1345 u32 threshold;
1346 int err;
1347
1348 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1349 if (err)
1350 return err;
1351
1352 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1353 pool_type, &tc_index);
1354 if (err)
1355 return err;
1356
1357 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1358 &pool_index);
1359 if (err)
1360 return err;
1361
1362 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1363 return -EINVAL;
1364
1365 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1366 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1367 tc_index, pool_type,
1368 pool_index, threshold);
1369}
1370
df38dafd
JP		 1371static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1372 struct genl_info *info)
1373{
1374 struct devlink *devlink = info->user_ptr[0];
1375 struct devlink_sb *devlink_sb = info->user_ptr[1];
1376 const struct devlink_ops *ops = devlink->ops;
1377
1378 if (ops && ops->sb_occ_snapshot)
1379 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1380 return -EOPNOTSUPP;
1381}
1382
1383static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1384 struct genl_info *info)
1385{
1386 struct devlink *devlink = info->user_ptr[0];
1387 struct devlink_sb *devlink_sb = info->user_ptr[1];
1388 const struct devlink_ops *ops = devlink->ops;
1389
1390 if (ops && ops->sb_occ_max_clear)
1391 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1392 return -EOPNOTSUPP;
1393}
1394
21e3d2dd
JP		 1395static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1396 enum devlink_command cmd, u32 portid,
1397 u32 seq, int flags)
08f4b591 1398{
59bfde01 1399 const struct devlink_ops *ops = devlink->ops;
f43e9b06 1400 u8 inline_mode, encap_mode;
08f4b591 1401 void *hdr;
59bfde01
RD		 1402 int err = 0;
1403 u16 mode;
08f4b591
OG		 1404
1405 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1406 if (!hdr)
1407 return -EMSGSIZE;
1408
59bfde01
RD		 1409 err = devlink_nl_put_handle(msg, devlink);
1410 if (err)
1a6aa36b 1411 goto nla_put_failure;
08f4b591 1412
4456f61c
JP		 1413 if (ops->eswitch_mode_get) {
1414 err = ops->eswitch_mode_get(devlink, &mode);
1415 if (err)
1416 goto nla_put_failure;
1417 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1418 if (err)
1419 goto nla_put_failure;
1420 }
59bfde01
RD		 1421
1422 if (ops->eswitch_inline_mode_get) {
1423 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1424 if (err)
1a6aa36b 1425 goto nla_put_failure;
59bfde01
RD		 1426 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1427 inline_mode);
1428 if (err)
1a6aa36b 1429 goto nla_put_failure;
59bfde01 1430 }
08f4b591 1431
f43e9b06
RD		 1432 if (ops->eswitch_encap_mode_get) {
1433 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1434 if (err)
1435 goto nla_put_failure;
1436 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1437 if (err)
1438 goto nla_put_failure;
1439 }
1440
08f4b591
OG		 1441 genlmsg_end(msg, hdr);
1442 return 0;
1443
1a6aa36b 1444nla_put_failure:
08f4b591 1445 genlmsg_cancel(msg, hdr);
59bfde01 1446 return err;
08f4b591
OG		 1447}
1448
adf200f3
JP		 1449static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1450 struct genl_info *info)
08f4b591
OG		 1451{
1452 struct devlink *devlink = info->user_ptr[0];
1453 const struct devlink_ops *ops = devlink->ops;
1454 struct sk_buff *msg;
08f4b591
OG		 1455 int err;
1456
4456f61c 1457 if (!ops)
08f4b591
OG		 1458 return -EOPNOTSUPP;
1459
08f4b591
OG		 1460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1461 if (!msg)
1462 return -ENOMEM;
1463
21e3d2dd
JP		 1464 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1465 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 1466
1467 if (err) {
1468 nlmsg_free(msg);
1469 return err;
1470 }
1471
1472 return genlmsg_reply(msg, info);
1473}
1474
adf200f3
JP		 1475static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1476 struct genl_info *info)
08f4b591
OG		 1477{
1478 struct devlink *devlink = info->user_ptr[0];
1479 const struct devlink_ops *ops = devlink->ops;
f43e9b06 1480 u8 inline_mode, encap_mode;
59bfde01 1481 int err = 0;
f43e9b06 1482 u16 mode;
08f4b591 1483
59bfde01
RD		 1484 if (!ops)
1485 return -EOPNOTSUPP;
08f4b591 1486
59bfde01
RD		 1487 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1488 if (!ops->eswitch_mode_set)
1489 return -EOPNOTSUPP;
1490 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
1491 err = ops->eswitch_mode_set(devlink, mode);
1492 if (err)
1493 return err;
1494 }
08f4b591 1495
59bfde01
RD		 1496 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1497 if (!ops->eswitch_inline_mode_set)
1498 return -EOPNOTSUPP;
1499 inline_mode = nla_get_u8(
1500 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
1501 err = ops->eswitch_inline_mode_set(devlink, inline_mode);
1502 if (err)
1503 return err;
1504 }
f43e9b06
RD		 1505
1506 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1507 if (!ops->eswitch_encap_mode_set)
1508 return -EOPNOTSUPP;
1509 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
1510 err = ops->eswitch_encap_mode_set(devlink, encap_mode);
1511 if (err)
1512 return err;
1513 }
1514
1555d204
AS		 1515 return 0;
1516}
1517
1518int devlink_dpipe_match_put(struct sk_buff *skb,
1519 struct devlink_dpipe_match *match)
1520{
1521 struct devlink_dpipe_header *header = match->header;
1522 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1523 struct nlattr *match_attr;
1524
1525 match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
1526 if (!match_attr)
1527 return -EMSGSIZE;
1528
1529 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1530 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1531 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1532 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1533 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1534 goto nla_put_failure;
1535
1536 nla_nest_end(skb, match_attr);
1537 return 0;
1538
1539nla_put_failure:
1540 nla_nest_cancel(skb, match_attr);
1541 return -EMSGSIZE;
1542}
1543EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1544
1545static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1546 struct sk_buff *skb)
1547{
1548 struct nlattr *matches_attr;
1549
1550 matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1551 if (!matches_attr)
1552 return -EMSGSIZE;
1553
1554 if (table->table_ops->matches_dump(table->priv, skb))
1555 goto nla_put_failure;
1556
1557 nla_nest_end(skb, matches_attr);
1558 return 0;
1559
1560nla_put_failure:
1561 nla_nest_cancel(skb, matches_attr);
1562 return -EMSGSIZE;
1563}
1564
1565int devlink_dpipe_action_put(struct sk_buff *skb,
1566 struct devlink_dpipe_action *action)
1567{
1568 struct devlink_dpipe_header *header = action->header;
1569 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1570 struct nlattr *action_attr;
1571
1572 action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
1573 if (!action_attr)
1574 return -EMSGSIZE;
1575
1576 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1577 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1578 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1579 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1580 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1581 goto nla_put_failure;
1582
1583 nla_nest_end(skb, action_attr);
1584 return 0;
1585
1586nla_put_failure:
1587 nla_nest_cancel(skb, action_attr);
1588 return -EMSGSIZE;
1589}
1590EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1591
1592static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1593 struct sk_buff *skb)
1594{
1595 struct nlattr *actions_attr;
1596
1597 actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1598 if (!actions_attr)
1599 return -EMSGSIZE;
1600
1601 if (table->table_ops->actions_dump(table->priv, skb))
1602 goto nla_put_failure;
1603
1604 nla_nest_end(skb, actions_attr);
1605 return 0;
1606
1607nla_put_failure:
1608 nla_nest_cancel(skb, actions_attr);
1609 return -EMSGSIZE;
1610}
1611
1612static int devlink_dpipe_table_put(struct sk_buff *skb,
1613 struct devlink_dpipe_table *table)
1614{
1615 struct nlattr *table_attr;
1616
1617 table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
1618 if (!table_attr)
1619 return -EMSGSIZE;
1620
1621 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
1622 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table->size,
1623 DEVLINK_ATTR_PAD))
1624 goto nla_put_failure;
1625 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1626 table->counters_enabled))
1627 goto nla_put_failure;
1628
1629 if (devlink_dpipe_matches_put(table, skb))
1630 goto nla_put_failure;
1631
1632 if (devlink_dpipe_actions_put(table, skb))
1633 goto nla_put_failure;
1634
1635 nla_nest_end(skb, table_attr);
1636 return 0;
1637
1638nla_put_failure:
1639 nla_nest_cancel(skb, table_attr);
1640 return -EMSGSIZE;
1641}
1642
1643static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1644 struct genl_info *info)
1645{
1646 int err;
1647
1648 if (*pskb) {
1649 err = genlmsg_reply(*pskb, info);
1650 if (err)
1651 return err;
1652 }
1653 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1654 if (!*pskb)
1655 return -ENOMEM;
1656 return 0;
1657}
1658
1659static int devlink_dpipe_tables_fill(struct genl_info *info,
1660 enum devlink_command cmd, int flags,
1661 struct list_head *dpipe_tables,
1662 const char *table_name)
1663{
1664 struct devlink *devlink = info->user_ptr[0];
1665 struct devlink_dpipe_table *table;
1666 struct nlattr *tables_attr;
1667 struct sk_buff *skb = NULL;
1668 struct nlmsghdr *nlh;
1669 bool incomplete;
1670 void *hdr;
1671 int i;
1672 int err;
1673
1674 table = list_first_entry(dpipe_tables,
1675 struct devlink_dpipe_table, list);
1676start_again:
1677 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1678 if (err)
1679 return err;
1680
1681 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1682 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 1683 if (!hdr) {
1684 nlmsg_free(skb);
1555d204 1685 return -EMSGSIZE;
6044bd4a 1686 }
1555d204
AS		 1687
1688 if (devlink_nl_put_handle(skb, devlink))
1689 goto nla_put_failure;
1690 tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
1691 if (!tables_attr)
1692 goto nla_put_failure;
1693
1694 i = 0;
1695 incomplete = false;
1696 list_for_each_entry_from(table, dpipe_tables, list) {
1697 if (!table_name) {
1698 err = devlink_dpipe_table_put(skb, table);
1699 if (err) {
1700 if (!i)
1701 goto err_table_put;
1702 incomplete = true;
1703 break;
1704 }
1705 } else {
1706 if (!strcmp(table->name, table_name)) {
1707 err = devlink_dpipe_table_put(skb, table);
1708 if (err)
1709 break;
1710 }
1711 }
1712 i++;
1713 }
1714
1715 nla_nest_end(skb, tables_attr);
1716 genlmsg_end(skb, hdr);
1717 if (incomplete)
1718 goto start_again;
1719
1720send_done:
1721 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1722 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1723 if (!nlh) {
1724 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1725 if (err)
1726 goto err_skb_send_alloc;
1727 goto send_done;
1728 }
1729
1730 return genlmsg_reply(skb, info);
1731
1732nla_put_failure:
1733 err = -EMSGSIZE;
1734err_table_put:
1735err_skb_send_alloc:
1736 genlmsg_cancel(skb, hdr);
1737 nlmsg_free(skb);
1738 return err;
1739}
1740
1741static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1742 struct genl_info *info)
1743{
1744 struct devlink *devlink = info->user_ptr[0];
1745 const char *table_name = NULL;
1746
1747 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1748 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1749
1750 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1751 &devlink->dpipe_table_list,
1752 table_name);
1753}
1754
1755static int devlink_dpipe_value_put(struct sk_buff *skb,
1756 struct devlink_dpipe_value *value)
1757{
1758 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1759 value->value_size, value->value))
1760 return -EMSGSIZE;
1761 if (value->mask)
1762 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1763 value->value_size, value->mask))
1764 return -EMSGSIZE;
1765 if (value->mapping_valid)
1766 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1767 value->mapping_value))
1768 return -EMSGSIZE;
1769 return 0;
1770}
1771
1772static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1773 struct devlink_dpipe_value *value)
1774{
1775 if (!value->action)
1776 return -EINVAL;
1777 if (devlink_dpipe_action_put(skb, value->action))
1778 return -EMSGSIZE;
1779 if (devlink_dpipe_value_put(skb, value))
1780 return -EMSGSIZE;
1781 return 0;
1782}
1783
1784static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1785 struct devlink_dpipe_value *values,
1786 unsigned int values_count)
1787{
1788 struct nlattr *action_attr;
1789 int i;
1790 int err;
1791
1792 for (i = 0; i < values_count; i++) {
1793 action_attr = nla_nest_start(skb,
1794 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1795 if (!action_attr)
1796 return -EMSGSIZE;
1797 err = devlink_dpipe_action_value_put(skb, &values[i]);
1798 if (err)
1799 goto err_action_value_put;
1800 nla_nest_end(skb, action_attr);
1801 }
1802 return 0;
1803
1804err_action_value_put:
1805 nla_nest_cancel(skb, action_attr);
1806 return err;
1807}
1808
1809static int devlink_dpipe_match_value_put(struct sk_buff *skb,
1810 struct devlink_dpipe_value *value)
1811{
1812 if (!value->match)
1813 return -EINVAL;
1814 if (devlink_dpipe_match_put(skb, value->match))
1815 return -EMSGSIZE;
1816 if (devlink_dpipe_value_put(skb, value))
1817 return -EMSGSIZE;
1818 return 0;
1819}
1820
1821static int devlink_dpipe_match_values_put(struct sk_buff *skb,
1822 struct devlink_dpipe_value *values,
1823 unsigned int values_count)
1824{
1825 struct nlattr *match_attr;
1826 int i;
1827 int err;
1828
1829 for (i = 0; i < values_count; i++) {
1830 match_attr = nla_nest_start(skb,
1831 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1832 if (!match_attr)
1833 return -EMSGSIZE;
1834 err = devlink_dpipe_match_value_put(skb, &values[i]);
1835 if (err)
1836 goto err_match_value_put;
1837 nla_nest_end(skb, match_attr);
1838 }
1839 return 0;
1840
1841err_match_value_put:
1842 nla_nest_cancel(skb, match_attr);
1843 return err;
1844}
1845
1846static int devlink_dpipe_entry_put(struct sk_buff *skb,
1847 struct devlink_dpipe_entry *entry)
1848{
1849 struct nlattr *entry_attr, *matches_attr, *actions_attr;
1850 int err;
1851
1852 entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1853 if (!entry_attr)
1854 return -EMSGSIZE;
1855
1856 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
1857 DEVLINK_ATTR_PAD))
1858 goto nla_put_failure;
1859 if (entry->counter_valid)
1860 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
1861 entry->counter, DEVLINK_ATTR_PAD))
1862 goto nla_put_failure;
1863
1864 matches_attr = nla_nest_start(skb,
1865 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
1866 if (!matches_attr)
1867 goto nla_put_failure;
1868
1869 err = devlink_dpipe_match_values_put(skb, entry->match_values,
1870 entry->match_values_count);
1871 if (err) {
1872 nla_nest_cancel(skb, matches_attr);
1873 goto err_match_values_put;
1874 }
1875 nla_nest_end(skb, matches_attr);
1876
1877 actions_attr = nla_nest_start(skb,
1878 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
1879 if (!actions_attr)
1880 goto nla_put_failure;
1881
1882 err = devlink_dpipe_action_values_put(skb, entry->action_values,
1883 entry->action_values_count);
1884 if (err) {
1885 nla_nest_cancel(skb, actions_attr);
1886 goto err_action_values_put;
1887 }
1888 nla_nest_end(skb, actions_attr);
59bfde01 1889
1555d204 1890 nla_nest_end(skb, entry_attr);
59bfde01 1891 return 0;
1555d204
AS		 1892
1893nla_put_failure:
1894 err = -EMSGSIZE;
1895err_match_values_put:
1896err_action_values_put:
1897 nla_nest_cancel(skb, entry_attr);
1898 return err;
1899}
1900
1901static struct devlink_dpipe_table *
1902devlink_dpipe_table_find(struct list_head *dpipe_tables,
1903 const char *table_name)
1904{
1905 struct devlink_dpipe_table *table;
1906
1907 list_for_each_entry_rcu(table, dpipe_tables, list) {
1908 if (!strcmp(table->name, table_name))
1909 return table;
1910 }
1911 return NULL;
1912}
1913
1914int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
1915{
1916 struct devlink *devlink;
1917 int err;
1918
1919 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
1920 dump_ctx->info);
1921 if (err)
1922 return err;
1923
1924 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
1925 dump_ctx->info->snd_portid,
1926 dump_ctx->info->snd_seq,
1927 &devlink_nl_family, NLM_F_MULTI,
1928 dump_ctx->cmd);
1929 if (!dump_ctx->hdr)
1930 goto nla_put_failure;
1931
1932 devlink = dump_ctx->info->user_ptr[0];
1933 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
1934 goto nla_put_failure;
1935 dump_ctx->nest = nla_nest_start(dump_ctx->skb,
1936 DEVLINK_ATTR_DPIPE_ENTRIES);
1937 if (!dump_ctx->nest)
1938 goto nla_put_failure;
1939 return 0;
1940
1941nla_put_failure:
1942 genlmsg_cancel(dump_ctx->skb, dump_ctx->hdr);
1943 nlmsg_free(dump_ctx->skb);
1944 return -EMSGSIZE;
1945}
1946EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
1947
1948int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
1949 struct devlink_dpipe_entry *entry)
1950{
1951 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
1952}
1953EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
1954
1955int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
1956{
1957 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
1958 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
1959 return 0;
1960}
1961EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
1962
1963static int devlink_dpipe_entries_fill(struct genl_info *info,
1964 enum devlink_command cmd, int flags,
1965 struct devlink_dpipe_table *table)
1966{
1967 struct devlink_dpipe_dump_ctx dump_ctx;
1968 struct nlmsghdr *nlh;
1969 int err;
1970
1971 dump_ctx.skb = NULL;
1972 dump_ctx.cmd = cmd;
1973 dump_ctx.info = info;
1974
1975 err = table->table_ops->entries_dump(table->priv,
1976 table->counters_enabled,
1977 &dump_ctx);
1978 if (err)
1979 goto err_entries_dump;
1980
1981send_done:
1982 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
1983 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1984 if (!nlh) {
1985 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
1986 if (err)
1987 goto err_skb_send_alloc;
1988 goto send_done;
1989 }
1990 return genlmsg_reply(dump_ctx.skb, info);
1991
1992err_entries_dump:
1993err_skb_send_alloc:
1994 genlmsg_cancel(dump_ctx.skb, dump_ctx.hdr);
1995 nlmsg_free(dump_ctx.skb);
1996 return err;
1997}
1998
1999static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2000 struct genl_info *info)
2001{
2002 struct devlink *devlink = info->user_ptr[0];
2003 struct devlink_dpipe_table *table;
2004 const char *table_name;
2005
2006 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2007 return -EINVAL;
2008
2009 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2010 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2011 table_name);
2012 if (!table)
2013 return -EINVAL;
2014
2015 if (!table->table_ops->entries_dump)
2016 return -EINVAL;
2017
2018 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2019 0, table);
2020}
2021
2022static int devlink_dpipe_fields_put(struct sk_buff *skb,
2023 const struct devlink_dpipe_header *header)
2024{
2025 struct devlink_dpipe_field *field;
2026 struct nlattr *field_attr;
2027 int i;
2028
2029 for (i = 0; i < header->fields_count; i++) {
2030 field = &header->fields[i];
2031 field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
2032 if (!field_attr)
2033 return -EMSGSIZE;
2034 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2035 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2036 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2037 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2038 goto nla_put_failure;
2039 nla_nest_end(skb, field_attr);
2040 }
2041 return 0;
2042
2043nla_put_failure:
2044 nla_nest_cancel(skb, field_attr);
2045 return -EMSGSIZE;
2046}
2047
2048static int devlink_dpipe_header_put(struct sk_buff *skb,
2049 struct devlink_dpipe_header *header)
2050{
2051 struct nlattr *fields_attr, *header_attr;
2052 int err;
2053
2054 header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2055 if (!header_attr)
1555d204
AS		 2056 return -EMSGSIZE;
2057
2058 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2059 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2060 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2061 goto nla_put_failure;
2062
2063 fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2064 if (!fields_attr)
2065 goto nla_put_failure;
2066
2067 err = devlink_dpipe_fields_put(skb, header);
2068 if (err) {
2069 nla_nest_cancel(skb, fields_attr);
2070 goto nla_put_failure;
2071 }
2072 nla_nest_end(skb, fields_attr);
2073 nla_nest_end(skb, header_attr);
2074 return 0;
2075
2076nla_put_failure:
2077 err = -EMSGSIZE;
2078 nla_nest_cancel(skb, header_attr);
2079 return err;
2080}
2081
2082static int devlink_dpipe_headers_fill(struct genl_info *info,
2083 enum devlink_command cmd, int flags,
2084 struct devlink_dpipe_headers *
2085 dpipe_headers)
2086{
2087 struct devlink *devlink = info->user_ptr[0];
2088 struct nlattr *headers_attr;
2089 struct sk_buff *skb = NULL;
2090 struct nlmsghdr *nlh;
2091 void *hdr;
2092 int i, j;
2093 int err;
2094
2095 i = 0;
2096start_again:
2097 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2098 if (err)
2099 return err;
2100
2101 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2102 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2103 if (!hdr) {
2104 nlmsg_free(skb);
1555d204 2105 return -EMSGSIZE;
6044bd4a 2106 }
1555d204
AS		 2107
2108 if (devlink_nl_put_handle(skb, devlink))
2109 goto nla_put_failure;
2110 headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2111 if (!headers_attr)
2112 goto nla_put_failure;
2113
2114 j = 0;
2115 for (; i < dpipe_headers->headers_count; i++) {
2116 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2117 if (err) {
2118 if (!j)
2119 goto err_table_put;
2120 break;
2121 }
2122 j++;
2123 }
2124 nla_nest_end(skb, headers_attr);
2125 genlmsg_end(skb, hdr);
2126 if (i != dpipe_headers->headers_count)
2127 goto start_again;
2128
2129send_done:
2130 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2131 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2132 if (!nlh) {
2133 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2134 if (err)
2135 goto err_skb_send_alloc;
2136 goto send_done;
2137 }
2138 return genlmsg_reply(skb, info);
2139
2140nla_put_failure:
2141 err = -EMSGSIZE;
2142err_table_put:
2143err_skb_send_alloc:
2144 genlmsg_cancel(skb, hdr);
2145 nlmsg_free(skb);
2146 return err;
2147}
2148
2149static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2150 struct genl_info *info)
2151{
2152 struct devlink *devlink = info->user_ptr[0];
2153
2154 if (!devlink->dpipe_headers)
2155 return -EOPNOTSUPP;
2156 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2157 0, devlink->dpipe_headers);
2158}
2159
2160static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2161 const char *table_name,
2162 bool enable)
2163{
2164 struct devlink_dpipe_table *table;
2165
2166 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2167 table_name);
2168 if (!table)
2169 return -EINVAL;
2170
2171 if (table->counter_control_extern)
2172 return -EOPNOTSUPP;
2173
2174 if (!(table->counters_enabled ^ enable))
2175 return 0;
2176
2177 table->counters_enabled = enable;
2178 if (table->table_ops->counters_set_update)
2179 table->table_ops->counters_set_update(table->priv, enable);
2180 return 0;
2181}
2182
2183static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2184 struct genl_info *info)
2185{
2186 struct devlink *devlink = info->user_ptr[0];
2187 const char *table_name;
2188 bool counters_enable;
2189
2190 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2191 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2192 return -EINVAL;
2193
2194 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2195 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2196
2197 return devlink_dpipe_table_counters_set(devlink, table_name,
2198 counters_enable);
08f4b591
OG		 2199}
2200
bfcd3a46
JP		 2201static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
2202 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
2203 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
2204 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
2205 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
2206 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 2207 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
2208 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
2209 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
2210 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
2211 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
2212 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
2213 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 2214 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 2215 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 2216 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 2217 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
2218 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
bfcd3a46
JP		 2219};
2220
2221static const struct genl_ops devlink_nl_ops[] = {
2222 {
2223 .cmd = DEVLINK_CMD_GET,
2224 .doit = devlink_nl_cmd_get_doit,
2225 .dumpit = devlink_nl_cmd_get_dumpit,
2226 .policy = devlink_nl_policy,
1fc2257e 2227 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 2228 /* can be retrieved by unprivileged users */
2229 },
2230 {
2231 .cmd = DEVLINK_CMD_PORT_GET,
2232 .doit = devlink_nl_cmd_port_get_doit,
2233 .dumpit = devlink_nl_cmd_port_get_dumpit,
2234 .policy = devlink_nl_policy,
2235 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
2236 /* can be retrieved by unprivileged users */
2237 },
2238 {
2239 .cmd = DEVLINK_CMD_PORT_SET,
2240 .doit = devlink_nl_cmd_port_set_doit,
2241 .policy = devlink_nl_policy,
2242 .flags = GENL_ADMIN_PERM,
2243 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
2244 },
2245 {
2246 .cmd = DEVLINK_CMD_PORT_SPLIT,
2247 .doit = devlink_nl_cmd_port_split_doit,
2248 .policy = devlink_nl_policy,
2249 .flags = GENL_ADMIN_PERM,
1fc2257e 2250 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 2251 },
2252 {
2253 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
2254 .doit = devlink_nl_cmd_port_unsplit_doit,
2255 .policy = devlink_nl_policy,
2256 .flags = GENL_ADMIN_PERM,
1fc2257e 2257 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46 2258 },
bf797471
JP		 2259 {
2260 .cmd = DEVLINK_CMD_SB_GET,
2261 .doit = devlink_nl_cmd_sb_get_doit,
2262 .dumpit = devlink_nl_cmd_sb_get_dumpit,
2263 .policy = devlink_nl_policy,
2264 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2265 DEVLINK_NL_FLAG_NEED_SB,
2266 /* can be retrieved by unprivileged users */
2267 },
2268 {
2269 .cmd = DEVLINK_CMD_SB_POOL_GET,
2270 .doit = devlink_nl_cmd_sb_pool_get_doit,
2271 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
2272 .policy = devlink_nl_policy,
2273 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2274 DEVLINK_NL_FLAG_NEED_SB,
2275 /* can be retrieved by unprivileged users */
2276 },
2277 {
2278 .cmd = DEVLINK_CMD_SB_POOL_SET,
2279 .doit = devlink_nl_cmd_sb_pool_set_doit,
2280 .policy = devlink_nl_policy,
2281 .flags = GENL_ADMIN_PERM,
2282 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2283 DEVLINK_NL_FLAG_NEED_SB,
2284 },
2285 {
2286 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
2287 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
2288 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
2289 .policy = devlink_nl_policy,
2290 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
2291 DEVLINK_NL_FLAG_NEED_SB,
2292 /* can be retrieved by unprivileged users */
2293 },
2294 {
2295 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
2296 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
2297 .policy = devlink_nl_policy,
2298 .flags = GENL_ADMIN_PERM,
2299 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
2300 DEVLINK_NL_FLAG_NEED_SB,
2301 },
2302 {
2303 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
2304 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
2305 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
2306 .policy = devlink_nl_policy,
2307 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
2308 DEVLINK_NL_FLAG_NEED_SB,
2309 /* can be retrieved by unprivileged users */
2310 },
2311 {
2312 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
2313 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
2314 .policy = devlink_nl_policy,
2315 .flags = GENL_ADMIN_PERM,
2316 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
2317 DEVLINK_NL_FLAG_NEED_SB,
2318 },
df38dafd
JP		 2319 {
2320 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
2321 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
2322 .policy = devlink_nl_policy,
2323 .flags = GENL_ADMIN_PERM,
2324 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2325 DEVLINK_NL_FLAG_NEED_SB |
2326 DEVLINK_NL_FLAG_LOCK_PORTS,
2327 },
2328 {
2329 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
2330 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
2331 .policy = devlink_nl_policy,
2332 .flags = GENL_ADMIN_PERM,
2333 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2334 DEVLINK_NL_FLAG_NEED_SB |
2335 DEVLINK_NL_FLAG_LOCK_PORTS,
2336 },
08f4b591 2337 {
adf200f3
JP		 2338 .cmd = DEVLINK_CMD_ESWITCH_GET,
2339 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 2340 .policy = devlink_nl_policy,
2341 .flags = GENL_ADMIN_PERM,
2342 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
2343 },
2344 {
adf200f3
JP		 2345 .cmd = DEVLINK_CMD_ESWITCH_SET,
2346 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591
OG		 2347 .policy = devlink_nl_policy,
2348 .flags = GENL_ADMIN_PERM,
2349 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
2350 },
1555d204
AS		 2351 {
2352 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
2353 .doit = devlink_nl_cmd_dpipe_table_get,
2354 .policy = devlink_nl_policy,
2355 .flags = GENL_ADMIN_PERM,
2356 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
2357 },
2358 {
2359 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
2360 .doit = devlink_nl_cmd_dpipe_entries_get,
2361 .policy = devlink_nl_policy,
2362 .flags = GENL_ADMIN_PERM,
2363 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
2364 },
2365 {
2366 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
2367 .doit = devlink_nl_cmd_dpipe_headers_get,
2368 .policy = devlink_nl_policy,
2369 .flags = GENL_ADMIN_PERM,
2370 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
2371 },
2372 {
2373 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
2374 .doit = devlink_nl_cmd_dpipe_table_counters_set,
2375 .policy = devlink_nl_policy,
2376 .flags = GENL_ADMIN_PERM,
2377 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
2378 },
bfcd3a46
JP		 2379};
2380
56989f6d 2381static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 2382 .name = DEVLINK_GENL_NAME,
2383 .version = DEVLINK_GENL_VERSION,
2384 .maxattr = DEVLINK_ATTR_MAX,
2385 .netnsok = true,
2386 .pre_doit = devlink_nl_pre_doit,
2387 .post_doit = devlink_nl_post_doit,
2388 .module = THIS_MODULE,
2389 .ops = devlink_nl_ops,
2390 .n_ops = ARRAY_SIZE(devlink_nl_ops),
2391 .mcgrps = devlink_nl_mcgrps,
2392 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
2393};
2394
bfcd3a46
JP		 2395/**
2396 * devlink_alloc - Allocate new devlink instance resources
2397 *
2398 * @ops: ops
2399 * @priv_size: size of user private data
2400 *
2401 * Allocate new devlink instance resources, including devlink index
2402 * and name.
2403 */
2404struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
2405{
2406 struct devlink *devlink;
2407
2408 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
2409 if (!devlink)
2410 return NULL;
2411 devlink->ops = ops;
2412 devlink_net_set(devlink, &init_net);
2413 INIT_LIST_HEAD(&devlink->port_list);
bf797471 2414 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 2415 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
bfcd3a46
JP		 2416 return devlink;
2417}
2418EXPORT_SYMBOL_GPL(devlink_alloc);
2419
2420/**
2421 * devlink_register - Register devlink instance
2422 *
2423 * @devlink: devlink
2424 */
2425int devlink_register(struct devlink *devlink, struct device *dev)
2426{
2427 mutex_lock(&devlink_mutex);
2428 devlink->dev = dev;
2429 list_add_tail(&devlink->list, &devlink_list);
2430 devlink_notify(devlink, DEVLINK_CMD_NEW);
2431 mutex_unlock(&devlink_mutex);
2432 return 0;
2433}
2434EXPORT_SYMBOL_GPL(devlink_register);
2435
2436/**
2437 * devlink_unregister - Unregister devlink instance
2438 *
2439 * @devlink: devlink
2440 */
2441void devlink_unregister(struct devlink *devlink)
2442{
2443 mutex_lock(&devlink_mutex);
2444 devlink_notify(devlink, DEVLINK_CMD_DEL);
2445 list_del(&devlink->list);
2446 mutex_unlock(&devlink_mutex);
2447}
2448EXPORT_SYMBOL_GPL(devlink_unregister);
2449
2450/**
2451 * devlink_free - Free devlink instance resources
2452 *
2453 * @devlink: devlink
2454 */
2455void devlink_free(struct devlink *devlink)
2456{
2457 kfree(devlink);
2458}
2459EXPORT_SYMBOL_GPL(devlink_free);
2460
2461/**
2462 * devlink_port_register - Register devlink port
2463 *
2464 * @devlink: devlink
2465 * @devlink_port: devlink port
2466 * @port_index
2467 *
2468 * Register devlink port with provided port index. User can use
2469 * any indexing, even hw-related one. devlink_port structure
2470 * is convenient to be embedded inside user driver private structure.
2471 * Note that the caller should take care of zeroing the devlink_port
2472 * structure.
2473 */
2474int devlink_port_register(struct devlink *devlink,
2475 struct devlink_port *devlink_port,
2476 unsigned int port_index)
2477{
2478 mutex_lock(&devlink_port_mutex);
2479 if (devlink_port_index_exists(devlink, port_index)) {
2480 mutex_unlock(&devlink_port_mutex);
2481 return -EEXIST;
2482 }
2483 devlink_port->devlink = devlink;
2484 devlink_port->index = port_index;
bfcd3a46
JP		 2485 devlink_port->registered = true;
2486 list_add_tail(&devlink_port->list, &devlink->port_list);
2487 mutex_unlock(&devlink_port_mutex);
2488 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
2489 return 0;
2490}
2491EXPORT_SYMBOL_GPL(devlink_port_register);
2492
2493/**
2494 * devlink_port_unregister - Unregister devlink port
2495 *
2496 * @devlink_port: devlink port
2497 */
2498void devlink_port_unregister(struct devlink_port *devlink_port)
2499{
2500 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2501 mutex_lock(&devlink_port_mutex);
2502 list_del(&devlink_port->list);
2503 mutex_unlock(&devlink_port_mutex);
2504}
2505EXPORT_SYMBOL_GPL(devlink_port_unregister);
2506
2507static void __devlink_port_type_set(struct devlink_port *devlink_port,
2508 enum devlink_port_type type,
2509 void *type_dev)
2510{
2511 devlink_port->type = type;
2512 devlink_port->type_dev = type_dev;
2513 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
2514}
2515
2516/**
2517 * devlink_port_type_eth_set - Set port type to Ethernet
2518 *
2519 * @devlink_port: devlink port
2520 * @netdev: related netdevice
2521 */
2522void devlink_port_type_eth_set(struct devlink_port *devlink_port,
2523 struct net_device *netdev)
2524{
2525 return __devlink_port_type_set(devlink_port,
2526 DEVLINK_PORT_TYPE_ETH, netdev);
2527}
2528EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
2529
2530/**
2531 * devlink_port_type_ib_set - Set port type to InfiniBand
2532 *
2533 * @devlink_port: devlink port
2534 * @ibdev: related IB device
2535 */
2536void devlink_port_type_ib_set(struct devlink_port *devlink_port,
2537 struct ib_device *ibdev)
2538{
2539 return __devlink_port_type_set(devlink_port,
2540 DEVLINK_PORT_TYPE_IB, ibdev);
2541}
2542EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
2543
2544/**
2545 * devlink_port_type_clear - Clear port type
2546 *
2547 * @devlink_port: devlink port
2548 */
2549void devlink_port_type_clear(struct devlink_port *devlink_port)
2550{
2551 return __devlink_port_type_set(devlink_port,
2552 DEVLINK_PORT_TYPE_NOTSET, NULL);
2553}
2554EXPORT_SYMBOL_GPL(devlink_port_type_clear);
2555
2556/**
2557 * devlink_port_split_set - Set port is split
2558 *
2559 * @devlink_port: devlink port
2560 * @split_group: split group - identifies group split port is part of
2561 */
2562void devlink_port_split_set(struct devlink_port *devlink_port,
2563 u32 split_group)
2564{
2565 devlink_port->split = true;
2566 devlink_port->split_group = split_group;
2567 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
2568}
2569EXPORT_SYMBOL_GPL(devlink_port_split_set);
2570
bf797471
JP		 2571int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
2572 u32 size, u16 ingress_pools_count,
2573 u16 egress_pools_count, u16 ingress_tc_count,
2574 u16 egress_tc_count)
2575{
2576 struct devlink_sb *devlink_sb;
2577 int err = 0;
2578
2579 mutex_lock(&devlink_mutex);
2580 if (devlink_sb_index_exists(devlink, sb_index)) {
2581 err = -EEXIST;
2582 goto unlock;
2583 }
2584
2585 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
2586 if (!devlink_sb) {
2587 err = -ENOMEM;
2588 goto unlock;
2589 }
2590 devlink_sb->index = sb_index;
2591 devlink_sb->size = size;
2592 devlink_sb->ingress_pools_count = ingress_pools_count;
2593 devlink_sb->egress_pools_count = egress_pools_count;
2594 devlink_sb->ingress_tc_count = ingress_tc_count;
2595 devlink_sb->egress_tc_count = egress_tc_count;
2596 list_add_tail(&devlink_sb->list, &devlink->sb_list);
2597unlock:
2598 mutex_unlock(&devlink_mutex);
2599 return err;
2600}
2601EXPORT_SYMBOL_GPL(devlink_sb_register);
2602
2603void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
2604{
2605 struct devlink_sb *devlink_sb;
2606
2607 mutex_lock(&devlink_mutex);
2608 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
2609 WARN_ON(!devlink_sb);
2610 list_del(&devlink_sb->list);
2611 mutex_unlock(&devlink_mutex);
2612 kfree(devlink_sb);
2613}
2614EXPORT_SYMBOL_GPL(devlink_sb_unregister);
2615
1555d204
AS		 2616/**
2617 * devlink_dpipe_headers_register - register dpipe headers
2618 *
2619 * @devlink: devlink
2620 * @dpipe_headers: dpipe header array
2621 *
2622 * Register the headers supported by hardware.
2623 */
2624int devlink_dpipe_headers_register(struct devlink *devlink,
2625 struct devlink_dpipe_headers *dpipe_headers)
2626{
2627 mutex_lock(&devlink_mutex);
2628 devlink->dpipe_headers = dpipe_headers;
2629 mutex_unlock(&devlink_mutex);
2630 return 0;
2631}
2632EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
2633
2634/**
2635 * devlink_dpipe_headers_unregister - unregister dpipe headers
2636 *
2637 * @devlink: devlink
2638 *
2639 * Unregister the headers supported by hardware.
2640 */
2641void devlink_dpipe_headers_unregister(struct devlink *devlink)
2642{
2643 mutex_lock(&devlink_mutex);
2644 devlink->dpipe_headers = NULL;
2645 mutex_unlock(&devlink_mutex);
2646}
2647EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
2648
2649/**
2650 * devlink_dpipe_table_counter_enabled - check if counter allocation
2651 * required
2652 * @devlink: devlink
2653 * @table_name: tables name
2654 *
2655 * Used by driver to check if counter allocation is required.
2656 * After counter allocation is turned on the table entries
2657 * are updated to include counter statistics.
2658 *
2659 * After that point on the driver must respect the counter
2660 * state so that each entry added to the table is added
2661 * with a counter.
2662 */
2663bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
2664 const char *table_name)
2665{
2666 struct devlink_dpipe_table *table;
2667 bool enabled;
2668
2669 rcu_read_lock();
2670 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2671 table_name);
2672 enabled = false;
2673 if (table)
2674 enabled = table->counters_enabled;
2675 rcu_read_unlock();
2676 return enabled;
2677}
2678EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
2679
2680/**
2681 * devlink_dpipe_table_register - register dpipe table
2682 *
2683 * @devlink: devlink
2684 * @table_name: table name
2685 * @table_ops: table ops
2686 * @priv: priv
2687 * @size: size
2688 * @counter_control_extern: external control for counters
2689 */
2690int devlink_dpipe_table_register(struct devlink *devlink,
2691 const char *table_name,
2692 struct devlink_dpipe_table_ops *table_ops,
2693 void *priv, u64 size,
2694 bool counter_control_extern)
2695{
2696 struct devlink_dpipe_table *table;
2697
2698 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
2699 return -EEXIST;
2700
2701 table = kzalloc(sizeof(*table), GFP_KERNEL);
2702 if (!table)
2703 return -ENOMEM;
2704
2705 table->name = table_name;
2706 table->table_ops = table_ops;
2707 table->priv = priv;
2708 table->size = size;
2709 table->counter_control_extern = counter_control_extern;
2710
2711 mutex_lock(&devlink_mutex);
2712 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
2713 mutex_unlock(&devlink_mutex);
2714 return 0;
2715}
2716EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
2717
2718/**
2719 * devlink_dpipe_table_unregister - unregister dpipe table
2720 *
2721 * @devlink: devlink
2722 * @table_name: table name
2723 */
2724void devlink_dpipe_table_unregister(struct devlink *devlink,
2725 const char *table_name)
2726{
2727 struct devlink_dpipe_table *table;
2728
2729 mutex_lock(&devlink_mutex);
2730 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2731 table_name);
2732 if (!table)
2733 goto unlock;
2734 list_del_rcu(&table->list);
2735 mutex_unlock(&devlink_mutex);
2736 kfree_rcu(table, rcu);
2737 return;
2738unlock:
2739 mutex_unlock(&devlink_mutex);
2740}
2741EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
2742
bfcd3a46
JP		 2743static int __init devlink_module_init(void)
2744{
489111e5 2745 return genl_register_family(&devlink_nl_family);
bfcd3a46
JP		 2746}
2747
2748static void __exit devlink_module_exit(void)
2749{
2750 genl_unregister_family(&devlink_nl_family);
2751}
2752
2753module_init(devlink_module_init);
2754module_exit(devlink_module_exit);
2755
2756MODULE_LICENSE("GPL v2");
2757MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
2758MODULE_DESCRIPTION("Network physical device Netlink interface");
2759MODULE_ALIAS_GENL_FAMILY(DEVLINK_GENL_NAME);
Linux 6.x block layer and io_uring tree(s)