blob: 78e22cea4cc79589e22781849a843397904e220c [file] [log] [blame]
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01001/*
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>
Jiri Pirkoe5224f02016-07-12 18:05:03 +020029#define CREATE_TRACE_POINTS
30#include <trace/events/devlink.h>
31
Arkadi Sharshevsky11770092017-08-24 08:39:59 +020032static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
33 {
David Ahern12bdc5e2017-08-30 17:07:30 -070034 .name = "destination mac",
Arkadi Sharshevsky11770092017-08-24 08:39:59 +020035 .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
Arkadi Sharshevsky3fb886e2017-08-24 08:40:00 +020049static 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
Arkadi Sharshevsky1797f5b2017-08-31 17:59:12 +020066static 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
Jiri Pirkoe5224f02016-07-12 18:05:03 +020083EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
Nir Dotan57186a52019-02-04 18:47:45 +000084EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +010085
86static LIST_HEAD(devlink_list);
87
88/* devlink_mutex
89 *
90 * An overall lock guarding every operation coming from userspace.
91 * It also guards devlink devices list and it is taken when
92 * driver registers/unregisters it.
93 */
94static DEFINE_MUTEX(devlink_mutex);
95
Jiri Pirkobfcd3a42016-02-26 17:32:23 +010096static struct net *devlink_net(const struct devlink *devlink)
97{
98 return read_pnet(&devlink->_net);
99}
100
101static void devlink_net_set(struct devlink *devlink, struct net *net)
102{
103 write_pnet(&devlink->_net, net);
104}
105
106static struct devlink *devlink_get_from_attrs(struct net *net,
107 struct nlattr **attrs)
108{
109 struct devlink *devlink;
110 char *busname;
111 char *devname;
112
113 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
114 return ERR_PTR(-EINVAL);
115
116 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
117 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
118
Parav Panditdac7c082019-02-12 14:24:08 -0600119 lockdep_assert_held(&devlink_mutex);
120
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100121 list_for_each_entry(devlink, &devlink_list, list) {
122 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
123 strcmp(dev_name(devlink->dev), devname) == 0 &&
124 net_eq(devlink_net(devlink), net))
125 return devlink;
126 }
127
128 return ERR_PTR(-ENODEV);
129}
130
131static struct devlink *devlink_get_from_info(struct genl_info *info)
132{
133 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
134}
135
136static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
137 int port_index)
138{
139 struct devlink_port *devlink_port;
140
141 list_for_each_entry(devlink_port, &devlink->port_list, list) {
142 if (devlink_port->index == port_index)
143 return devlink_port;
144 }
145 return NULL;
146}
147
148static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
149{
150 return devlink_port_get_by_index(devlink, port_index);
151}
152
153static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
154 struct nlattr **attrs)
155{
156 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
157 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
158 struct devlink_port *devlink_port;
159
160 devlink_port = devlink_port_get_by_index(devlink, port_index);
161 if (!devlink_port)
162 return ERR_PTR(-ENODEV);
163 return devlink_port;
164 }
165 return ERR_PTR(-EINVAL);
166}
167
168static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
169 struct genl_info *info)
170{
171 return devlink_port_get_from_attrs(devlink, info->attrs);
172}
173
Jiri Pirkobf797472016-04-14 18:19:13 +0200174struct devlink_sb {
175 struct list_head list;
176 unsigned int index;
177 u32 size;
178 u16 ingress_pools_count;
179 u16 egress_pools_count;
180 u16 ingress_tc_count;
181 u16 egress_tc_count;
182};
183
184static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
185{
186 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
187}
188
189static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
190 unsigned int sb_index)
191{
192 struct devlink_sb *devlink_sb;
193
194 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
195 if (devlink_sb->index == sb_index)
196 return devlink_sb;
197 }
198 return NULL;
199}
200
201static bool devlink_sb_index_exists(struct devlink *devlink,
202 unsigned int sb_index)
203{
204 return devlink_sb_get_by_index(devlink, sb_index);
205}
206
207static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
208 struct nlattr **attrs)
209{
210 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
211 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
212 struct devlink_sb *devlink_sb;
213
214 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
215 if (!devlink_sb)
216 return ERR_PTR(-ENODEV);
217 return devlink_sb;
218 }
219 return ERR_PTR(-EINVAL);
220}
221
222static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
223 struct genl_info *info)
224{
225 return devlink_sb_get_from_attrs(devlink, info->attrs);
226}
227
228static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
229 struct nlattr **attrs,
230 u16 *p_pool_index)
231{
232 u16 val;
233
234 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
235 return -EINVAL;
236
237 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
238 if (val >= devlink_sb_pool_count(devlink_sb))
239 return -EINVAL;
240 *p_pool_index = val;
241 return 0;
242}
243
244static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
245 struct genl_info *info,
246 u16 *p_pool_index)
247{
248 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
249 p_pool_index);
250}
251
252static int
253devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
254 enum devlink_sb_pool_type *p_pool_type)
255{
256 u8 val;
257
258 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
259 return -EINVAL;
260
261 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
262 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
263 val != DEVLINK_SB_POOL_TYPE_EGRESS)
264 return -EINVAL;
265 *p_pool_type = val;
266 return 0;
267}
268
269static int
270devlink_sb_pool_type_get_from_info(struct genl_info *info,
271 enum devlink_sb_pool_type *p_pool_type)
272{
273 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
274}
275
276static int
277devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
278 enum devlink_sb_threshold_type *p_th_type)
279{
280 u8 val;
281
282 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
283 return -EINVAL;
284
285 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
286 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
287 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
288 return -EINVAL;
289 *p_th_type = val;
290 return 0;
291}
292
293static int
294devlink_sb_th_type_get_from_info(struct genl_info *info,
295 enum devlink_sb_threshold_type *p_th_type)
296{
297 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
298}
299
300static int
301devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
302 struct nlattr **attrs,
303 enum devlink_sb_pool_type pool_type,
304 u16 *p_tc_index)
305{
306 u16 val;
307
308 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
309 return -EINVAL;
310
311 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
312 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
313 val >= devlink_sb->ingress_tc_count)
314 return -EINVAL;
315 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
316 val >= devlink_sb->egress_tc_count)
317 return -EINVAL;
318 *p_tc_index = val;
319 return 0;
320}
321
322static int
323devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
324 struct genl_info *info,
325 enum devlink_sb_pool_type pool_type,
326 u16 *p_tc_index)
327{
328 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
329 pool_type, p_tc_index);
330}
331
Alex Veskerb16ebe92018-07-12 15:13:08 +0300332struct devlink_region {
333 struct devlink *devlink;
334 struct list_head list;
335 const char *name;
336 struct list_head snapshot_list;
337 u32 max_snapshots;
338 u32 cur_snapshots;
339 u64 size;
340};
341
Alex Veskerd7e52722018-07-12 15:13:10 +0300342struct devlink_snapshot {
343 struct list_head list;
344 struct devlink_region *region;
345 devlink_snapshot_data_dest_t *data_destructor;
346 u64 data_len;
347 u8 *data;
348 u32 id;
349};
350
Alex Veskerb16ebe92018-07-12 15:13:08 +0300351static struct devlink_region *
352devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
353{
354 struct devlink_region *region;
355
356 list_for_each_entry(region, &devlink->region_list, list)
357 if (!strcmp(region->name, region_name))
358 return region;
359
360 return NULL;
361}
362
Alex Veskerd7e52722018-07-12 15:13:10 +0300363static struct devlink_snapshot *
364devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
365{
366 struct devlink_snapshot *snapshot;
367
368 list_for_each_entry(snapshot, &region->snapshot_list, list)
369 if (snapshot->id == id)
370 return snapshot;
371
372 return NULL;
373}
374
375static void devlink_region_snapshot_del(struct devlink_snapshot *snapshot)
376{
377 snapshot->region->cur_snapshots--;
378 list_del(&snapshot->list);
379 (*snapshot->data_destructor)(snapshot->data);
380 kfree(snapshot);
381}
382
Jiri Pirko1fc2257e2016-04-08 19:12:48 +0200383#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
384#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
Jiri Pirkobf797472016-04-14 18:19:13 +0200385#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100386
387/* The per devlink instance lock is taken by default in the pre-doit
388 * operation, yet several commands do not require this. The global
389 * devlink lock is taken and protects from disruption by user-calls.
390 */
391#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100392
393static int devlink_nl_pre_doit(const struct genl_ops *ops,
394 struct sk_buff *skb, struct genl_info *info)
395{
396 struct devlink *devlink;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100397 int err;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100398
399 mutex_lock(&devlink_mutex);
400 devlink = devlink_get_from_info(info);
401 if (IS_ERR(devlink)) {
402 mutex_unlock(&devlink_mutex);
403 return PTR_ERR(devlink);
404 }
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100405 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
406 mutex_lock(&devlink->lock);
Jiri Pirko1fc2257e2016-04-08 19:12:48 +0200407 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
408 info->user_ptr[0] = devlink;
409 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100410 struct devlink_port *devlink_port;
411
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100412 devlink_port = devlink_port_get_from_info(devlink, info);
413 if (IS_ERR(devlink_port)) {
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100414 err = PTR_ERR(devlink_port);
415 goto unlock;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100416 }
Jiri Pirko1fc2257e2016-04-08 19:12:48 +0200417 info->user_ptr[0] = devlink_port;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100418 }
Jiri Pirkobf797472016-04-14 18:19:13 +0200419 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
420 struct devlink_sb *devlink_sb;
421
422 devlink_sb = devlink_sb_get_from_info(devlink, info);
423 if (IS_ERR(devlink_sb)) {
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100424 err = PTR_ERR(devlink_sb);
425 goto unlock;
Jiri Pirkobf797472016-04-14 18:19:13 +0200426 }
427 info->user_ptr[1] = devlink_sb;
428 }
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100429 return 0;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100430
431unlock:
432 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
433 mutex_unlock(&devlink->lock);
434 mutex_unlock(&devlink_mutex);
435 return err;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100436}
437
438static void devlink_nl_post_doit(const struct genl_ops *ops,
439 struct sk_buff *skb, struct genl_info *info)
440{
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100441 struct devlink *devlink;
442
443 devlink = devlink_get_from_info(info);
444 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
445 mutex_unlock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100446 mutex_unlock(&devlink_mutex);
447}
448
Johannes Berg489111e2016-10-24 14:40:03 +0200449static struct genl_family devlink_nl_family;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100450
451enum devlink_multicast_groups {
452 DEVLINK_MCGRP_CONFIG,
453};
454
455static const struct genl_multicast_group devlink_nl_mcgrps[] = {
456 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
457};
458
459static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
460{
461 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
462 return -EMSGSIZE;
463 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
464 return -EMSGSIZE;
465 return 0;
466}
467
468static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
469 enum devlink_command cmd, u32 portid,
470 u32 seq, int flags)
471{
472 void *hdr;
473
474 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
475 if (!hdr)
476 return -EMSGSIZE;
477
478 if (devlink_nl_put_handle(msg, devlink))
479 goto nla_put_failure;
480
481 genlmsg_end(msg, hdr);
482 return 0;
483
484nla_put_failure:
485 genlmsg_cancel(msg, hdr);
486 return -EMSGSIZE;
487}
488
489static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
490{
491 struct sk_buff *msg;
492 int err;
493
494 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
495
496 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
497 if (!msg)
498 return;
499
500 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
501 if (err) {
502 nlmsg_free(msg);
503 return;
504 }
505
506 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
507 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
508}
509
Jiri Pirkob9ffcba2018-05-18 09:29:00 +0200510static int devlink_nl_port_attrs_put(struct sk_buff *msg,
511 struct devlink_port *devlink_port)
512{
513 struct devlink_port_attrs *attrs = &devlink_port->attrs;
514
515 if (!attrs->set)
516 return 0;
Jiri Pirko5ec13802018-05-18 09:29:01 +0200517 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
518 return -EMSGSIZE;
Jiri Pirkob9ffcba2018-05-18 09:29:00 +0200519 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, attrs->port_number))
520 return -EMSGSIZE;
521 if (!attrs->split)
522 return 0;
523 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, attrs->port_number))
524 return -EMSGSIZE;
525 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
526 attrs->split_subport_number))
527 return -EMSGSIZE;
528 return 0;
529}
530
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100531static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
532 struct devlink_port *devlink_port,
533 enum devlink_command cmd, u32 portid,
534 u32 seq, int flags)
535{
536 void *hdr;
537
538 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
539 if (!hdr)
540 return -EMSGSIZE;
541
542 if (devlink_nl_put_handle(msg, devlink))
543 goto nla_put_failure;
544 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
545 goto nla_put_failure;
546 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
547 goto nla_put_failure;
548 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
549 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
550 devlink_port->desired_type))
551 goto nla_put_failure;
552 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
553 struct net_device *netdev = devlink_port->type_dev;
554
555 if (netdev &&
556 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
557 netdev->ifindex) ||
558 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
559 netdev->name)))
560 goto nla_put_failure;
561 }
562 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
563 struct ib_device *ibdev = devlink_port->type_dev;
564
565 if (ibdev &&
566 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
567 ibdev->name))
568 goto nla_put_failure;
569 }
Jiri Pirkob9ffcba2018-05-18 09:29:00 +0200570 if (devlink_nl_port_attrs_put(msg, devlink_port))
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100571 goto nla_put_failure;
572
573 genlmsg_end(msg, hdr);
574 return 0;
575
576nla_put_failure:
577 genlmsg_cancel(msg, hdr);
578 return -EMSGSIZE;
579}
580
581static void devlink_port_notify(struct devlink_port *devlink_port,
582 enum devlink_command cmd)
583{
584 struct devlink *devlink = devlink_port->devlink;
585 struct sk_buff *msg;
586 int err;
587
588 if (!devlink_port->registered)
589 return;
590
591 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
592
593 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
594 if (!msg)
595 return;
596
597 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
598 if (err) {
599 nlmsg_free(msg);
600 return;
601 }
602
603 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
604 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
605}
606
607static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
608{
609 struct devlink *devlink = info->user_ptr[0];
610 struct sk_buff *msg;
611 int err;
612
613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
614 if (!msg)
615 return -ENOMEM;
616
617 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
618 info->snd_portid, info->snd_seq, 0);
619 if (err) {
620 nlmsg_free(msg);
621 return err;
622 }
623
624 return genlmsg_reply(msg, info);
625}
626
627static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
628 struct netlink_callback *cb)
629{
630 struct devlink *devlink;
631 int start = cb->args[0];
632 int idx = 0;
633 int err;
634
635 mutex_lock(&devlink_mutex);
636 list_for_each_entry(devlink, &devlink_list, list) {
637 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
638 continue;
639 if (idx < start) {
640 idx++;
641 continue;
642 }
643 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
644 NETLINK_CB(cb->skb).portid,
645 cb->nlh->nlmsg_seq, NLM_F_MULTI);
646 if (err)
647 goto out;
648 idx++;
649 }
650out:
651 mutex_unlock(&devlink_mutex);
652
653 cb->args[0] = idx;
654 return msg->len;
655}
656
657static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
658 struct genl_info *info)
659{
Jiri Pirko1fc2257e2016-04-08 19:12:48 +0200660 struct devlink_port *devlink_port = info->user_ptr[0];
661 struct devlink *devlink = devlink_port->devlink;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100662 struct sk_buff *msg;
663 int err;
664
665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
666 if (!msg)
667 return -ENOMEM;
668
669 err = devlink_nl_port_fill(msg, devlink, devlink_port,
670 DEVLINK_CMD_PORT_NEW,
671 info->snd_portid, info->snd_seq, 0);
672 if (err) {
673 nlmsg_free(msg);
674 return err;
675 }
676
677 return genlmsg_reply(msg, info);
678}
679
680static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
681 struct netlink_callback *cb)
682{
683 struct devlink *devlink;
684 struct devlink_port *devlink_port;
685 int start = cb->args[0];
686 int idx = 0;
687 int err;
688
689 mutex_lock(&devlink_mutex);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100690 list_for_each_entry(devlink, &devlink_list, list) {
691 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
692 continue;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100693 mutex_lock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100694 list_for_each_entry(devlink_port, &devlink->port_list, list) {
695 if (idx < start) {
696 idx++;
697 continue;
698 }
699 err = devlink_nl_port_fill(msg, devlink, devlink_port,
700 DEVLINK_CMD_NEW,
701 NETLINK_CB(cb->skb).portid,
702 cb->nlh->nlmsg_seq,
703 NLM_F_MULTI);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100704 if (err) {
705 mutex_unlock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100706 goto out;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100707 }
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100708 idx++;
709 }
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100710 mutex_unlock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100711 }
712out:
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100713 mutex_unlock(&devlink_mutex);
714
715 cb->args[0] = idx;
716 return msg->len;
717}
718
719static int devlink_port_type_set(struct devlink *devlink,
720 struct devlink_port *devlink_port,
721 enum devlink_port_type port_type)
722
723{
724 int err;
725
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -0800726 if (devlink->ops->port_type_set) {
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100727 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
728 return -EINVAL;
Elad Raz6edf1012016-10-23 17:43:05 +0200729 if (port_type == devlink_port->type)
730 return 0;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100731 err = devlink->ops->port_type_set(devlink_port, port_type);
732 if (err)
733 return err;
734 devlink_port->desired_type = port_type;
735 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
736 return 0;
737 }
738 return -EOPNOTSUPP;
739}
740
741static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
742 struct genl_info *info)
743{
Jiri Pirko1fc2257e2016-04-08 19:12:48 +0200744 struct devlink_port *devlink_port = info->user_ptr[0];
745 struct devlink *devlink = devlink_port->devlink;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100746 int err;
747
748 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
749 enum devlink_port_type port_type;
750
751 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
752 err = devlink_port_type_set(devlink, devlink_port, port_type);
753 if (err)
754 return err;
755 }
756 return 0;
757}
758
David Ahernac0fc8a2018-06-05 08:14:09 -0700759static int devlink_port_split(struct devlink *devlink, u32 port_index,
760 u32 count, struct netlink_ext_ack *extack)
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100761
762{
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -0800763 if (devlink->ops->port_split)
David Ahernac0fc8a2018-06-05 08:14:09 -0700764 return devlink->ops->port_split(devlink, port_index, count,
765 extack);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100766 return -EOPNOTSUPP;
767}
768
769static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
770 struct genl_info *info)
771{
772 struct devlink *devlink = info->user_ptr[0];
773 u32 port_index;
774 u32 count;
775
776 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
777 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
778 return -EINVAL;
779
780 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
781 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
David Ahernac0fc8a2018-06-05 08:14:09 -0700782 return devlink_port_split(devlink, port_index, count, info->extack);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100783}
784
David Ahernac0fc8a2018-06-05 08:14:09 -0700785static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
786 struct netlink_ext_ack *extack)
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100787
788{
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -0800789 if (devlink->ops->port_unsplit)
David Ahernac0fc8a2018-06-05 08:14:09 -0700790 return devlink->ops->port_unsplit(devlink, port_index, extack);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100791 return -EOPNOTSUPP;
792}
793
794static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
795 struct genl_info *info)
796{
797 struct devlink *devlink = info->user_ptr[0];
798 u32 port_index;
799
800 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
801 return -EINVAL;
802
803 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
David Ahernac0fc8a2018-06-05 08:14:09 -0700804 return devlink_port_unsplit(devlink, port_index, info->extack);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +0100805}
806
Jiri Pirkobf797472016-04-14 18:19:13 +0200807static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
808 struct devlink_sb *devlink_sb,
809 enum devlink_command cmd, u32 portid,
810 u32 seq, int flags)
811{
812 void *hdr;
813
814 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
815 if (!hdr)
816 return -EMSGSIZE;
817
818 if (devlink_nl_put_handle(msg, devlink))
819 goto nla_put_failure;
820 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
821 goto nla_put_failure;
822 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
823 goto nla_put_failure;
824 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
825 devlink_sb->ingress_pools_count))
826 goto nla_put_failure;
827 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
828 devlink_sb->egress_pools_count))
829 goto nla_put_failure;
830 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
831 devlink_sb->ingress_tc_count))
832 goto nla_put_failure;
833 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
834 devlink_sb->egress_tc_count))
835 goto nla_put_failure;
836
837 genlmsg_end(msg, hdr);
838 return 0;
839
840nla_put_failure:
841 genlmsg_cancel(msg, hdr);
842 return -EMSGSIZE;
843}
844
845static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
846 struct genl_info *info)
847{
848 struct devlink *devlink = info->user_ptr[0];
849 struct devlink_sb *devlink_sb = info->user_ptr[1];
850 struct sk_buff *msg;
851 int err;
852
853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
854 if (!msg)
855 return -ENOMEM;
856
857 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
858 DEVLINK_CMD_SB_NEW,
859 info->snd_portid, info->snd_seq, 0);
860 if (err) {
861 nlmsg_free(msg);
862 return err;
863 }
864
865 return genlmsg_reply(msg, info);
866}
867
868static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
869 struct netlink_callback *cb)
870{
871 struct devlink *devlink;
872 struct devlink_sb *devlink_sb;
873 int start = cb->args[0];
874 int idx = 0;
875 int err;
876
877 mutex_lock(&devlink_mutex);
878 list_for_each_entry(devlink, &devlink_list, list) {
879 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
880 continue;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100881 mutex_lock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +0200882 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
883 if (idx < start) {
884 idx++;
885 continue;
886 }
887 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
888 DEVLINK_CMD_SB_NEW,
889 NETLINK_CB(cb->skb).portid,
890 cb->nlh->nlmsg_seq,
891 NLM_F_MULTI);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100892 if (err) {
893 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +0200894 goto out;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100895 }
Jiri Pirkobf797472016-04-14 18:19:13 +0200896 idx++;
897 }
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +0100898 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +0200899 }
900out:
901 mutex_unlock(&devlink_mutex);
902
903 cb->args[0] = idx;
904 return msg->len;
905}
906
907static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
908 struct devlink_sb *devlink_sb,
909 u16 pool_index, enum devlink_command cmd,
910 u32 portid, u32 seq, int flags)
911{
912 struct devlink_sb_pool_info pool_info;
913 void *hdr;
914 int err;
915
916 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
917 pool_index, &pool_info);
918 if (err)
919 return err;
920
921 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
922 if (!hdr)
923 return -EMSGSIZE;
924
925 if (devlink_nl_put_handle(msg, devlink))
926 goto nla_put_failure;
927 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
928 goto nla_put_failure;
929 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
930 goto nla_put_failure;
931 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
932 goto nla_put_failure;
933 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
934 goto nla_put_failure;
935 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
936 pool_info.threshold_type))
937 goto nla_put_failure;
Jakub Kicinskibff57312019-02-01 17:56:28 -0800938 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
939 pool_info.cell_size))
940 goto nla_put_failure;
Jiri Pirkobf797472016-04-14 18:19:13 +0200941
942 genlmsg_end(msg, hdr);
943 return 0;
944
945nla_put_failure:
946 genlmsg_cancel(msg, hdr);
947 return -EMSGSIZE;
948}
949
950static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
951 struct genl_info *info)
952{
953 struct devlink *devlink = info->user_ptr[0];
954 struct devlink_sb *devlink_sb = info->user_ptr[1];
955 struct sk_buff *msg;
956 u16 pool_index;
957 int err;
958
959 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
960 &pool_index);
961 if (err)
962 return err;
963
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -0800964 if (!devlink->ops->sb_pool_get)
Jiri Pirkobf797472016-04-14 18:19:13 +0200965 return -EOPNOTSUPP;
966
967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
968 if (!msg)
969 return -ENOMEM;
970
971 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
972 DEVLINK_CMD_SB_POOL_NEW,
973 info->snd_portid, info->snd_seq, 0);
974 if (err) {
975 nlmsg_free(msg);
976 return err;
977 }
978
979 return genlmsg_reply(msg, info);
980}
981
982static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
983 struct devlink *devlink,
984 struct devlink_sb *devlink_sb,
985 u32 portid, u32 seq)
986{
987 u16 pool_count = devlink_sb_pool_count(devlink_sb);
988 u16 pool_index;
989 int err;
990
991 for (pool_index = 0; pool_index < pool_count; pool_index++) {
992 if (*p_idx < start) {
993 (*p_idx)++;
994 continue;
995 }
996 err = devlink_nl_sb_pool_fill(msg, devlink,
997 devlink_sb,
998 pool_index,
999 DEVLINK_CMD_SB_POOL_NEW,
1000 portid, seq, NLM_F_MULTI);
1001 if (err)
1002 return err;
1003 (*p_idx)++;
1004 }
1005 return 0;
1006}
1007
1008static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1009 struct netlink_callback *cb)
1010{
1011 struct devlink *devlink;
1012 struct devlink_sb *devlink_sb;
1013 int start = cb->args[0];
1014 int idx = 0;
1015 int err;
1016
1017 mutex_lock(&devlink_mutex);
1018 list_for_each_entry(devlink, &devlink_list, list) {
1019 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001020 !devlink->ops->sb_pool_get)
Jiri Pirkobf797472016-04-14 18:19:13 +02001021 continue;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001022 mutex_lock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001023 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1024 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1025 devlink_sb,
1026 NETLINK_CB(cb->skb).portid,
1027 cb->nlh->nlmsg_seq);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001028 if (err && err != -EOPNOTSUPP) {
1029 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001030 goto out;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001031 }
Jiri Pirkobf797472016-04-14 18:19:13 +02001032 }
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001033 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001034 }
1035out:
1036 mutex_unlock(&devlink_mutex);
1037
1038 cb->args[0] = idx;
1039 return msg->len;
1040}
1041
1042static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1043 u16 pool_index, u32 size,
1044 enum devlink_sb_threshold_type threshold_type)
1045
1046{
1047 const struct devlink_ops *ops = devlink->ops;
1048
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001049 if (ops->sb_pool_set)
Jiri Pirkobf797472016-04-14 18:19:13 +02001050 return ops->sb_pool_set(devlink, sb_index, pool_index,
1051 size, threshold_type);
1052 return -EOPNOTSUPP;
1053}
1054
1055static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1056 struct genl_info *info)
1057{
1058 struct devlink *devlink = info->user_ptr[0];
1059 struct devlink_sb *devlink_sb = info->user_ptr[1];
1060 enum devlink_sb_threshold_type threshold_type;
1061 u16 pool_index;
1062 u32 size;
1063 int err;
1064
1065 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1066 &pool_index);
1067 if (err)
1068 return err;
1069
1070 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1071 if (err)
1072 return err;
1073
1074 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1075 return -EINVAL;
1076
1077 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1078 return devlink_sb_pool_set(devlink, devlink_sb->index,
1079 pool_index, size, threshold_type);
1080}
1081
1082static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1083 struct devlink *devlink,
1084 struct devlink_port *devlink_port,
1085 struct devlink_sb *devlink_sb,
1086 u16 pool_index,
1087 enum devlink_command cmd,
1088 u32 portid, u32 seq, int flags)
1089{
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001090 const struct devlink_ops *ops = devlink->ops;
Jiri Pirkobf797472016-04-14 18:19:13 +02001091 u32 threshold;
1092 void *hdr;
1093 int err;
1094
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001095 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1096 pool_index, &threshold);
Jiri Pirkobf797472016-04-14 18:19:13 +02001097 if (err)
1098 return err;
1099
1100 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1101 if (!hdr)
1102 return -EMSGSIZE;
1103
1104 if (devlink_nl_put_handle(msg, devlink))
1105 goto nla_put_failure;
1106 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1107 goto nla_put_failure;
1108 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1109 goto nla_put_failure;
1110 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1111 goto nla_put_failure;
1112 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1113 goto nla_put_failure;
1114
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001115 if (ops->sb_occ_port_pool_get) {
1116 u32 cur;
1117 u32 max;
1118
1119 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1120 pool_index, &cur, &max);
1121 if (err && err != -EOPNOTSUPP)
1122 return err;
1123 if (!err) {
1124 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1125 goto nla_put_failure;
1126 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1127 goto nla_put_failure;
1128 }
1129 }
1130
Jiri Pirkobf797472016-04-14 18:19:13 +02001131 genlmsg_end(msg, hdr);
1132 return 0;
1133
1134nla_put_failure:
1135 genlmsg_cancel(msg, hdr);
1136 return -EMSGSIZE;
1137}
1138
1139static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1140 struct genl_info *info)
1141{
1142 struct devlink_port *devlink_port = info->user_ptr[0];
1143 struct devlink *devlink = devlink_port->devlink;
1144 struct devlink_sb *devlink_sb = info->user_ptr[1];
1145 struct sk_buff *msg;
1146 u16 pool_index;
1147 int err;
1148
1149 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1150 &pool_index);
1151 if (err)
1152 return err;
1153
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001154 if (!devlink->ops->sb_port_pool_get)
Jiri Pirkobf797472016-04-14 18:19:13 +02001155 return -EOPNOTSUPP;
1156
1157 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1158 if (!msg)
1159 return -ENOMEM;
1160
1161 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1162 devlink_sb, pool_index,
1163 DEVLINK_CMD_SB_PORT_POOL_NEW,
1164 info->snd_portid, info->snd_seq, 0);
1165 if (err) {
1166 nlmsg_free(msg);
1167 return err;
1168 }
1169
1170 return genlmsg_reply(msg, info);
1171}
1172
1173static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1174 struct devlink *devlink,
1175 struct devlink_sb *devlink_sb,
1176 u32 portid, u32 seq)
1177{
1178 struct devlink_port *devlink_port;
1179 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1180 u16 pool_index;
1181 int err;
1182
1183 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1184 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1185 if (*p_idx < start) {
1186 (*p_idx)++;
1187 continue;
1188 }
1189 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1190 devlink_port,
1191 devlink_sb,
1192 pool_index,
1193 DEVLINK_CMD_SB_PORT_POOL_NEW,
1194 portid, seq,
1195 NLM_F_MULTI);
1196 if (err)
1197 return err;
1198 (*p_idx)++;
1199 }
1200 }
1201 return 0;
1202}
1203
1204static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1205 struct netlink_callback *cb)
1206{
1207 struct devlink *devlink;
1208 struct devlink_sb *devlink_sb;
1209 int start = cb->args[0];
1210 int idx = 0;
1211 int err;
1212
1213 mutex_lock(&devlink_mutex);
Jiri Pirkobf797472016-04-14 18:19:13 +02001214 list_for_each_entry(devlink, &devlink_list, list) {
1215 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001216 !devlink->ops->sb_port_pool_get)
Jiri Pirkobf797472016-04-14 18:19:13 +02001217 continue;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001218 mutex_lock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001219 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1220 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1221 devlink, devlink_sb,
1222 NETLINK_CB(cb->skb).portid,
1223 cb->nlh->nlmsg_seq);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001224 if (err && err != -EOPNOTSUPP) {
1225 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001226 goto out;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001227 }
Jiri Pirkobf797472016-04-14 18:19:13 +02001228 }
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001229 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001230 }
1231out:
Jiri Pirkobf797472016-04-14 18:19:13 +02001232 mutex_unlock(&devlink_mutex);
1233
1234 cb->args[0] = idx;
1235 return msg->len;
1236}
1237
1238static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1239 unsigned int sb_index, u16 pool_index,
1240 u32 threshold)
1241
1242{
1243 const struct devlink_ops *ops = devlink_port->devlink->ops;
1244
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001245 if (ops->sb_port_pool_set)
Jiri Pirkobf797472016-04-14 18:19:13 +02001246 return ops->sb_port_pool_set(devlink_port, sb_index,
1247 pool_index, threshold);
1248 return -EOPNOTSUPP;
1249}
1250
1251static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1252 struct genl_info *info)
1253{
1254 struct devlink_port *devlink_port = info->user_ptr[0];
1255 struct devlink_sb *devlink_sb = info->user_ptr[1];
1256 u16 pool_index;
1257 u32 threshold;
1258 int err;
1259
1260 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1261 &pool_index);
1262 if (err)
1263 return err;
1264
1265 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1266 return -EINVAL;
1267
1268 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1269 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1270 pool_index, threshold);
1271}
1272
1273static int
1274devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1275 struct devlink_port *devlink_port,
1276 struct devlink_sb *devlink_sb, u16 tc_index,
1277 enum devlink_sb_pool_type pool_type,
1278 enum devlink_command cmd,
1279 u32 portid, u32 seq, int flags)
1280{
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001281 const struct devlink_ops *ops = devlink->ops;
Jiri Pirkobf797472016-04-14 18:19:13 +02001282 u16 pool_index;
1283 u32 threshold;
1284 void *hdr;
1285 int err;
1286
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001287 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1288 tc_index, pool_type,
1289 &pool_index, &threshold);
Jiri Pirkobf797472016-04-14 18:19:13 +02001290 if (err)
1291 return err;
1292
1293 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1294 if (!hdr)
1295 return -EMSGSIZE;
1296
1297 if (devlink_nl_put_handle(msg, devlink))
1298 goto nla_put_failure;
1299 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1300 goto nla_put_failure;
1301 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1302 goto nla_put_failure;
1303 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1304 goto nla_put_failure;
1305 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1306 goto nla_put_failure;
1307 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1308 goto nla_put_failure;
1309 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1310 goto nla_put_failure;
1311
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001312 if (ops->sb_occ_tc_port_bind_get) {
1313 u32 cur;
1314 u32 max;
1315
1316 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1317 devlink_sb->index,
1318 tc_index, pool_type,
1319 &cur, &max);
1320 if (err && err != -EOPNOTSUPP)
1321 return err;
1322 if (!err) {
1323 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1324 goto nla_put_failure;
1325 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1326 goto nla_put_failure;
1327 }
1328 }
1329
Jiri Pirkobf797472016-04-14 18:19:13 +02001330 genlmsg_end(msg, hdr);
1331 return 0;
1332
1333nla_put_failure:
1334 genlmsg_cancel(msg, hdr);
1335 return -EMSGSIZE;
1336}
1337
1338static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1339 struct genl_info *info)
1340{
1341 struct devlink_port *devlink_port = info->user_ptr[0];
1342 struct devlink *devlink = devlink_port->devlink;
1343 struct devlink_sb *devlink_sb = info->user_ptr[1];
1344 struct sk_buff *msg;
1345 enum devlink_sb_pool_type pool_type;
1346 u16 tc_index;
1347 int err;
1348
1349 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1350 if (err)
1351 return err;
1352
1353 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1354 pool_type, &tc_index);
1355 if (err)
1356 return err;
1357
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001358 if (!devlink->ops->sb_tc_pool_bind_get)
Jiri Pirkobf797472016-04-14 18:19:13 +02001359 return -EOPNOTSUPP;
1360
1361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1362 if (!msg)
1363 return -ENOMEM;
1364
1365 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1366 devlink_sb, tc_index, pool_type,
1367 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1368 info->snd_portid,
1369 info->snd_seq, 0);
1370 if (err) {
1371 nlmsg_free(msg);
1372 return err;
1373 }
1374
1375 return genlmsg_reply(msg, info);
1376}
1377
1378static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1379 int start, int *p_idx,
1380 struct devlink *devlink,
1381 struct devlink_sb *devlink_sb,
1382 u32 portid, u32 seq)
1383{
1384 struct devlink_port *devlink_port;
1385 u16 tc_index;
1386 int err;
1387
1388 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1389 for (tc_index = 0;
1390 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1391 if (*p_idx < start) {
1392 (*p_idx)++;
1393 continue;
1394 }
1395 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1396 devlink_port,
1397 devlink_sb,
1398 tc_index,
1399 DEVLINK_SB_POOL_TYPE_INGRESS,
1400 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1401 portid, seq,
1402 NLM_F_MULTI);
1403 if (err)
1404 return err;
1405 (*p_idx)++;
1406 }
1407 for (tc_index = 0;
1408 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1409 if (*p_idx < start) {
1410 (*p_idx)++;
1411 continue;
1412 }
1413 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1414 devlink_port,
1415 devlink_sb,
1416 tc_index,
1417 DEVLINK_SB_POOL_TYPE_EGRESS,
1418 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1419 portid, seq,
1420 NLM_F_MULTI);
1421 if (err)
1422 return err;
1423 (*p_idx)++;
1424 }
1425 }
1426 return 0;
1427}
1428
1429static int
1430devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1431 struct netlink_callback *cb)
1432{
1433 struct devlink *devlink;
1434 struct devlink_sb *devlink_sb;
1435 int start = cb->args[0];
1436 int idx = 0;
1437 int err;
1438
1439 mutex_lock(&devlink_mutex);
Jiri Pirkobf797472016-04-14 18:19:13 +02001440 list_for_each_entry(devlink, &devlink_list, list) {
1441 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001442 !devlink->ops->sb_tc_pool_bind_get)
Jiri Pirkobf797472016-04-14 18:19:13 +02001443 continue;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001444
1445 mutex_lock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001446 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1447 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1448 devlink,
1449 devlink_sb,
1450 NETLINK_CB(cb->skb).portid,
1451 cb->nlh->nlmsg_seq);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001452 if (err && err != -EOPNOTSUPP) {
1453 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001454 goto out;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001455 }
Jiri Pirkobf797472016-04-14 18:19:13 +02001456 }
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01001457 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02001458 }
1459out:
Jiri Pirkobf797472016-04-14 18:19:13 +02001460 mutex_unlock(&devlink_mutex);
1461
1462 cb->args[0] = idx;
1463 return msg->len;
1464}
1465
1466static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1467 unsigned int sb_index, u16 tc_index,
1468 enum devlink_sb_pool_type pool_type,
1469 u16 pool_index, u32 threshold)
1470
1471{
1472 const struct devlink_ops *ops = devlink_port->devlink->ops;
1473
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001474 if (ops->sb_tc_pool_bind_set)
Jiri Pirkobf797472016-04-14 18:19:13 +02001475 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1476 tc_index, pool_type,
1477 pool_index, threshold);
1478 return -EOPNOTSUPP;
1479}
1480
1481static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1482 struct genl_info *info)
1483{
1484 struct devlink_port *devlink_port = info->user_ptr[0];
1485 struct devlink_sb *devlink_sb = info->user_ptr[1];
1486 enum devlink_sb_pool_type pool_type;
1487 u16 tc_index;
1488 u16 pool_index;
1489 u32 threshold;
1490 int err;
1491
1492 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1493 if (err)
1494 return err;
1495
1496 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1497 pool_type, &tc_index);
1498 if (err)
1499 return err;
1500
1501 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1502 &pool_index);
1503 if (err)
1504 return err;
1505
1506 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1507 return -EINVAL;
1508
1509 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1510 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1511 tc_index, pool_type,
1512 pool_index, threshold);
1513}
1514
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001515static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1516 struct genl_info *info)
1517{
1518 struct devlink *devlink = info->user_ptr[0];
1519 struct devlink_sb *devlink_sb = info->user_ptr[1];
1520 const struct devlink_ops *ops = devlink->ops;
1521
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001522 if (ops->sb_occ_snapshot)
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001523 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1524 return -EOPNOTSUPP;
1525}
1526
1527static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1528 struct genl_info *info)
1529{
1530 struct devlink *devlink = info->user_ptr[0];
1531 struct devlink_sb *devlink_sb = info->user_ptr[1];
1532 const struct devlink_ops *ops = devlink->ops;
1533
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08001534 if (ops->sb_occ_max_clear)
Jiri Pirkodf38daf2016-04-14 18:19:14 +02001535 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1536 return -EOPNOTSUPP;
1537}
1538
Jiri Pirko21e3d2d2017-02-09 15:54:34 +01001539static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1540 enum devlink_command cmd, u32 portid,
1541 u32 seq, int flags)
Or Gerlitz08f4b592016-07-01 14:51:01 +03001542{
Roi Dayan59bfde02016-11-22 23:09:57 +02001543 const struct devlink_ops *ops = devlink->ops;
Roi Dayanf43e9b02016-09-25 13:52:44 +03001544 u8 inline_mode, encap_mode;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001545 void *hdr;
Roi Dayan59bfde02016-11-22 23:09:57 +02001546 int err = 0;
1547 u16 mode;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001548
1549 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1550 if (!hdr)
1551 return -EMSGSIZE;
1552
Roi Dayan59bfde02016-11-22 23:09:57 +02001553 err = devlink_nl_put_handle(msg, devlink);
1554 if (err)
Jiri Pirko1a6aa362017-02-09 15:54:35 +01001555 goto nla_put_failure;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001556
Jiri Pirko4456f612017-02-09 15:54:36 +01001557 if (ops->eswitch_mode_get) {
1558 err = ops->eswitch_mode_get(devlink, &mode);
1559 if (err)
1560 goto nla_put_failure;
1561 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1562 if (err)
1563 goto nla_put_failure;
1564 }
Roi Dayan59bfde02016-11-22 23:09:57 +02001565
1566 if (ops->eswitch_inline_mode_get) {
1567 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1568 if (err)
Jiri Pirko1a6aa362017-02-09 15:54:35 +01001569 goto nla_put_failure;
Roi Dayan59bfde02016-11-22 23:09:57 +02001570 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1571 inline_mode);
1572 if (err)
Jiri Pirko1a6aa362017-02-09 15:54:35 +01001573 goto nla_put_failure;
Roi Dayan59bfde02016-11-22 23:09:57 +02001574 }
Or Gerlitz08f4b592016-07-01 14:51:01 +03001575
Roi Dayanf43e9b02016-09-25 13:52:44 +03001576 if (ops->eswitch_encap_mode_get) {
1577 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1578 if (err)
1579 goto nla_put_failure;
1580 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1581 if (err)
1582 goto nla_put_failure;
1583 }
1584
Or Gerlitz08f4b592016-07-01 14:51:01 +03001585 genlmsg_end(msg, hdr);
1586 return 0;
1587
Jiri Pirko1a6aa362017-02-09 15:54:35 +01001588nla_put_failure:
Or Gerlitz08f4b592016-07-01 14:51:01 +03001589 genlmsg_cancel(msg, hdr);
Roi Dayan59bfde02016-11-22 23:09:57 +02001590 return err;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001591}
1592
Jiri Pirkoadf200f2017-02-09 15:54:33 +01001593static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1594 struct genl_info *info)
Or Gerlitz08f4b592016-07-01 14:51:01 +03001595{
1596 struct devlink *devlink = info->user_ptr[0];
Or Gerlitz08f4b592016-07-01 14:51:01 +03001597 struct sk_buff *msg;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001598 int err;
1599
Or Gerlitz08f4b592016-07-01 14:51:01 +03001600 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1601 if (!msg)
1602 return -ENOMEM;
1603
Jiri Pirko21e3d2d2017-02-09 15:54:34 +01001604 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1605 info->snd_portid, info->snd_seq, 0);
Or Gerlitz08f4b592016-07-01 14:51:01 +03001606
1607 if (err) {
1608 nlmsg_free(msg);
1609 return err;
1610 }
1611
1612 return genlmsg_reply(msg, info);
1613}
1614
Jiri Pirkoadf200f2017-02-09 15:54:33 +01001615static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1616 struct genl_info *info)
Or Gerlitz08f4b592016-07-01 14:51:01 +03001617{
1618 struct devlink *devlink = info->user_ptr[0];
1619 const struct devlink_ops *ops = devlink->ops;
Roi Dayanf43e9b02016-09-25 13:52:44 +03001620 u8 inline_mode, encap_mode;
Roi Dayan59bfde02016-11-22 23:09:57 +02001621 int err = 0;
Roi Dayanf43e9b02016-09-25 13:52:44 +03001622 u16 mode;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001623
Roi Dayan59bfde02016-11-22 23:09:57 +02001624 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1625 if (!ops->eswitch_mode_set)
1626 return -EOPNOTSUPP;
1627 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
Eli Britsteindb7ff192018-08-15 16:02:18 +03001628 err = ops->eswitch_mode_set(devlink, mode, info->extack);
Roi Dayan59bfde02016-11-22 23:09:57 +02001629 if (err)
1630 return err;
1631 }
Or Gerlitz08f4b592016-07-01 14:51:01 +03001632
Roi Dayan59bfde02016-11-22 23:09:57 +02001633 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1634 if (!ops->eswitch_inline_mode_set)
1635 return -EOPNOTSUPP;
1636 inline_mode = nla_get_u8(
1637 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
Eli Britsteindb7ff192018-08-15 16:02:18 +03001638 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
1639 info->extack);
Roi Dayan59bfde02016-11-22 23:09:57 +02001640 if (err)
1641 return err;
1642 }
Roi Dayanf43e9b02016-09-25 13:52:44 +03001643
1644 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1645 if (!ops->eswitch_encap_mode_set)
1646 return -EOPNOTSUPP;
1647 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
Eli Britsteindb7ff192018-08-15 16:02:18 +03001648 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
1649 info->extack);
Roi Dayanf43e9b02016-09-25 13:52:44 +03001650 if (err)
1651 return err;
1652 }
1653
Roi Dayan59bfde02016-11-22 23:09:57 +02001654 return 0;
Or Gerlitz08f4b592016-07-01 14:51:01 +03001655}
1656
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001657int devlink_dpipe_match_put(struct sk_buff *skb,
1658 struct devlink_dpipe_match *match)
1659{
1660 struct devlink_dpipe_header *header = match->header;
1661 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1662 struct nlattr *match_attr;
1663
1664 match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
1665 if (!match_attr)
1666 return -EMSGSIZE;
1667
1668 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1669 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1670 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1671 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1672 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1673 goto nla_put_failure;
1674
1675 nla_nest_end(skb, match_attr);
1676 return 0;
1677
1678nla_put_failure:
1679 nla_nest_cancel(skb, match_attr);
1680 return -EMSGSIZE;
1681}
1682EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1683
1684static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1685 struct sk_buff *skb)
1686{
1687 struct nlattr *matches_attr;
1688
1689 matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1690 if (!matches_attr)
1691 return -EMSGSIZE;
1692
1693 if (table->table_ops->matches_dump(table->priv, skb))
1694 goto nla_put_failure;
1695
1696 nla_nest_end(skb, matches_attr);
1697 return 0;
1698
1699nla_put_failure:
1700 nla_nest_cancel(skb, matches_attr);
1701 return -EMSGSIZE;
1702}
1703
1704int devlink_dpipe_action_put(struct sk_buff *skb,
1705 struct devlink_dpipe_action *action)
1706{
1707 struct devlink_dpipe_header *header = action->header;
1708 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1709 struct nlattr *action_attr;
1710
1711 action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
1712 if (!action_attr)
1713 return -EMSGSIZE;
1714
1715 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1716 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1717 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1718 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1719 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1720 goto nla_put_failure;
1721
1722 nla_nest_end(skb, action_attr);
1723 return 0;
1724
1725nla_put_failure:
1726 nla_nest_cancel(skb, action_attr);
1727 return -EMSGSIZE;
1728}
1729EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1730
1731static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1732 struct sk_buff *skb)
1733{
1734 struct nlattr *actions_attr;
1735
1736 actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1737 if (!actions_attr)
1738 return -EMSGSIZE;
1739
1740 if (table->table_ops->actions_dump(table->priv, skb))
1741 goto nla_put_failure;
1742
1743 nla_nest_end(skb, actions_attr);
1744 return 0;
1745
1746nla_put_failure:
1747 nla_nest_cancel(skb, actions_attr);
1748 return -EMSGSIZE;
1749}
1750
1751static int devlink_dpipe_table_put(struct sk_buff *skb,
1752 struct devlink_dpipe_table *table)
1753{
1754 struct nlattr *table_attr;
Arkadi Sharshevskyffd3cdc2017-08-24 08:40:02 +02001755 u64 table_size;
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001756
Arkadi Sharshevskyffd3cdc2017-08-24 08:40:02 +02001757 table_size = table->table_ops->size_get(table->priv);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001758 table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
1759 if (!table_attr)
1760 return -EMSGSIZE;
1761
1762 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
Arkadi Sharshevskyffd3cdc2017-08-24 08:40:02 +02001763 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001764 DEVLINK_ATTR_PAD))
1765 goto nla_put_failure;
1766 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1767 table->counters_enabled))
1768 goto nla_put_failure;
1769
Arkadi Sharshevsky56dc7cd2018-01-15 08:59:05 +01001770 if (table->resource_valid) {
Arkadi Sharshevsky3d18e4f2018-02-26 18:25:42 +02001771 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1772 table->resource_id, DEVLINK_ATTR_PAD) ||
1773 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1774 table->resource_units, DEVLINK_ATTR_PAD))
1775 goto nla_put_failure;
Arkadi Sharshevsky56dc7cd2018-01-15 08:59:05 +01001776 }
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001777 if (devlink_dpipe_matches_put(table, skb))
1778 goto nla_put_failure;
1779
1780 if (devlink_dpipe_actions_put(table, skb))
1781 goto nla_put_failure;
1782
1783 nla_nest_end(skb, table_attr);
1784 return 0;
1785
1786nla_put_failure:
1787 nla_nest_cancel(skb, table_attr);
1788 return -EMSGSIZE;
1789}
1790
1791static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1792 struct genl_info *info)
1793{
1794 int err;
1795
1796 if (*pskb) {
1797 err = genlmsg_reply(*pskb, info);
1798 if (err)
1799 return err;
1800 }
1801 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1802 if (!*pskb)
1803 return -ENOMEM;
1804 return 0;
1805}
1806
1807static int devlink_dpipe_tables_fill(struct genl_info *info,
1808 enum devlink_command cmd, int flags,
1809 struct list_head *dpipe_tables,
1810 const char *table_name)
1811{
1812 struct devlink *devlink = info->user_ptr[0];
1813 struct devlink_dpipe_table *table;
1814 struct nlattr *tables_attr;
1815 struct sk_buff *skb = NULL;
1816 struct nlmsghdr *nlh;
1817 bool incomplete;
1818 void *hdr;
1819 int i;
1820 int err;
1821
1822 table = list_first_entry(dpipe_tables,
1823 struct devlink_dpipe_table, list);
1824start_again:
1825 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1826 if (err)
1827 return err;
1828
1829 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1830 &devlink_nl_family, NLM_F_MULTI, cmd);
Haishuang Yan6044bd42017-06-05 08:57:21 +08001831 if (!hdr) {
1832 nlmsg_free(skb);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001833 return -EMSGSIZE;
Haishuang Yan6044bd42017-06-05 08:57:21 +08001834 }
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001835
1836 if (devlink_nl_put_handle(skb, devlink))
1837 goto nla_put_failure;
1838 tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
1839 if (!tables_attr)
1840 goto nla_put_failure;
1841
1842 i = 0;
1843 incomplete = false;
1844 list_for_each_entry_from(table, dpipe_tables, list) {
1845 if (!table_name) {
1846 err = devlink_dpipe_table_put(skb, table);
1847 if (err) {
1848 if (!i)
1849 goto err_table_put;
1850 incomplete = true;
1851 break;
1852 }
1853 } else {
1854 if (!strcmp(table->name, table_name)) {
1855 err = devlink_dpipe_table_put(skb, table);
1856 if (err)
1857 break;
1858 }
1859 }
1860 i++;
1861 }
1862
1863 nla_nest_end(skb, tables_attr);
1864 genlmsg_end(skb, hdr);
1865 if (incomplete)
1866 goto start_again;
1867
1868send_done:
1869 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1870 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1871 if (!nlh) {
1872 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1873 if (err)
Arkadi Sharshevsky7fe4d6d2018-03-18 17:37:22 +02001874 return err;
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001875 goto send_done;
1876 }
1877
1878 return genlmsg_reply(skb, info);
1879
1880nla_put_failure:
1881 err = -EMSGSIZE;
1882err_table_put:
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02001883 nlmsg_free(skb);
1884 return err;
1885}
1886
1887static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1888 struct genl_info *info)
1889{
1890 struct devlink *devlink = info->user_ptr[0];
1891 const char *table_name = NULL;
1892
1893 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1894 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1895
1896 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1897 &devlink->dpipe_table_list,
1898 table_name);
1899}
1900
1901static int devlink_dpipe_value_put(struct sk_buff *skb,
1902 struct devlink_dpipe_value *value)
1903{
1904 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1905 value->value_size, value->value))
1906 return -EMSGSIZE;
1907 if (value->mask)
1908 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1909 value->value_size, value->mask))
1910 return -EMSGSIZE;
1911 if (value->mapping_valid)
1912 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1913 value->mapping_value))
1914 return -EMSGSIZE;
1915 return 0;
1916}
1917
1918static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1919 struct devlink_dpipe_value *value)
1920{
1921 if (!value->action)
1922 return -EINVAL;
1923 if (devlink_dpipe_action_put(skb, value->action))
1924 return -EMSGSIZE;
1925 if (devlink_dpipe_value_put(skb, value))
1926 return -EMSGSIZE;
1927 return 0;
1928}
1929
1930static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1931 struct devlink_dpipe_value *values,
1932 unsigned int values_count)
1933{
1934 struct nlattr *action_attr;
1935 int i;
1936 int err;
1937
1938 for (i = 0; i < values_count; i++) {
1939 action_attr = nla_nest_start(skb,
1940 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1941 if (!action_attr)
1942 return -EMSGSIZE;
1943 err = devlink_dpipe_action_value_put(skb, &values[i]);
1944 if (err)
1945 goto err_action_value_put;
1946 nla_nest_end(skb, action_attr);
1947 }
1948 return 0;
1949
1950err_action_value_put:
1951 nla_nest_cancel(skb, action_attr);
1952 return err;
1953}
1954
1955static int devlink_dpipe_match_value_put(struct sk_buff *skb,
1956 struct devlink_dpipe_value *value)
1957{
1958 if (!value->match)
1959 return -EINVAL;
1960 if (devlink_dpipe_match_put(skb, value->match))
1961 return -EMSGSIZE;
1962 if (devlink_dpipe_value_put(skb, value))
1963 return -EMSGSIZE;
1964 return 0;
1965}
1966
1967static int devlink_dpipe_match_values_put(struct sk_buff *skb,
1968 struct devlink_dpipe_value *values,
1969 unsigned int values_count)
1970{
1971 struct nlattr *match_attr;
1972 int i;
1973 int err;
1974
1975 for (i = 0; i < values_count; i++) {
1976 match_attr = nla_nest_start(skb,
1977 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1978 if (!match_attr)
1979 return -EMSGSIZE;
1980 err = devlink_dpipe_match_value_put(skb, &values[i]);
1981 if (err)
1982 goto err_match_value_put;
1983 nla_nest_end(skb, match_attr);
1984 }
1985 return 0;
1986
1987err_match_value_put:
1988 nla_nest_cancel(skb, match_attr);
1989 return err;
1990}
1991
1992static int devlink_dpipe_entry_put(struct sk_buff *skb,
1993 struct devlink_dpipe_entry *entry)
1994{
1995 struct nlattr *entry_attr, *matches_attr, *actions_attr;
1996 int err;
1997
1998 entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1999 if (!entry_attr)
2000 return -EMSGSIZE;
2001
2002 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2003 DEVLINK_ATTR_PAD))
2004 goto nla_put_failure;
2005 if (entry->counter_valid)
2006 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2007 entry->counter, DEVLINK_ATTR_PAD))
2008 goto nla_put_failure;
2009
2010 matches_attr = nla_nest_start(skb,
2011 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2012 if (!matches_attr)
2013 goto nla_put_failure;
2014
2015 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2016 entry->match_values_count);
2017 if (err) {
2018 nla_nest_cancel(skb, matches_attr);
2019 goto err_match_values_put;
2020 }
2021 nla_nest_end(skb, matches_attr);
2022
2023 actions_attr = nla_nest_start(skb,
2024 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2025 if (!actions_attr)
2026 goto nla_put_failure;
2027
2028 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2029 entry->action_values_count);
2030 if (err) {
2031 nla_nest_cancel(skb, actions_attr);
2032 goto err_action_values_put;
2033 }
2034 nla_nest_end(skb, actions_attr);
2035
2036 nla_nest_end(skb, entry_attr);
2037 return 0;
2038
2039nla_put_failure:
2040 err = -EMSGSIZE;
2041err_match_values_put:
2042err_action_values_put:
2043 nla_nest_cancel(skb, entry_attr);
2044 return err;
2045}
2046
2047static struct devlink_dpipe_table *
2048devlink_dpipe_table_find(struct list_head *dpipe_tables,
2049 const char *table_name)
2050{
2051 struct devlink_dpipe_table *table;
2052
2053 list_for_each_entry_rcu(table, dpipe_tables, list) {
2054 if (!strcmp(table->name, table_name))
2055 return table;
2056 }
2057 return NULL;
2058}
2059
2060int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2061{
2062 struct devlink *devlink;
2063 int err;
2064
2065 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2066 dump_ctx->info);
2067 if (err)
2068 return err;
2069
2070 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2071 dump_ctx->info->snd_portid,
2072 dump_ctx->info->snd_seq,
2073 &devlink_nl_family, NLM_F_MULTI,
2074 dump_ctx->cmd);
2075 if (!dump_ctx->hdr)
2076 goto nla_put_failure;
2077
2078 devlink = dump_ctx->info->user_ptr[0];
2079 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2080 goto nla_put_failure;
2081 dump_ctx->nest = nla_nest_start(dump_ctx->skb,
2082 DEVLINK_ATTR_DPIPE_ENTRIES);
2083 if (!dump_ctx->nest)
2084 goto nla_put_failure;
2085 return 0;
2086
2087nla_put_failure:
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002088 nlmsg_free(dump_ctx->skb);
2089 return -EMSGSIZE;
2090}
2091EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2092
2093int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2094 struct devlink_dpipe_entry *entry)
2095{
2096 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2097}
2098EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2099
2100int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2101{
2102 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2103 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2104 return 0;
2105}
2106EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2107
Arkadi Sharshevsky35807322017-08-24 08:40:03 +02002108void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2109
2110{
2111 unsigned int value_count, value_index;
2112 struct devlink_dpipe_value *value;
2113
2114 value = entry->action_values;
2115 value_count = entry->action_values_count;
2116 for (value_index = 0; value_index < value_count; value_index++) {
2117 kfree(value[value_index].value);
2118 kfree(value[value_index].mask);
2119 }
2120
2121 value = entry->match_values;
2122 value_count = entry->match_values_count;
2123 for (value_index = 0; value_index < value_count; value_index++) {
2124 kfree(value[value_index].value);
2125 kfree(value[value_index].mask);
2126 }
2127}
2128EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2129
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002130static int devlink_dpipe_entries_fill(struct genl_info *info,
2131 enum devlink_command cmd, int flags,
2132 struct devlink_dpipe_table *table)
2133{
2134 struct devlink_dpipe_dump_ctx dump_ctx;
2135 struct nlmsghdr *nlh;
2136 int err;
2137
2138 dump_ctx.skb = NULL;
2139 dump_ctx.cmd = cmd;
2140 dump_ctx.info = info;
2141
2142 err = table->table_ops->entries_dump(table->priv,
2143 table->counters_enabled,
2144 &dump_ctx);
2145 if (err)
Arkadi Sharshevsky7fe4d6d2018-03-18 17:37:22 +02002146 return err;
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002147
2148send_done:
2149 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2150 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2151 if (!nlh) {
2152 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2153 if (err)
Arkadi Sharshevsky7fe4d6d2018-03-18 17:37:22 +02002154 return err;
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002155 goto send_done;
2156 }
2157 return genlmsg_reply(dump_ctx.skb, info);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002158}
2159
2160static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2161 struct genl_info *info)
2162{
2163 struct devlink *devlink = info->user_ptr[0];
2164 struct devlink_dpipe_table *table;
2165 const char *table_name;
2166
2167 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2168 return -EINVAL;
2169
2170 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2171 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2172 table_name);
2173 if (!table)
2174 return -EINVAL;
2175
2176 if (!table->table_ops->entries_dump)
2177 return -EINVAL;
2178
2179 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2180 0, table);
2181}
2182
2183static int devlink_dpipe_fields_put(struct sk_buff *skb,
2184 const struct devlink_dpipe_header *header)
2185{
2186 struct devlink_dpipe_field *field;
2187 struct nlattr *field_attr;
2188 int i;
2189
2190 for (i = 0; i < header->fields_count; i++) {
2191 field = &header->fields[i];
2192 field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
2193 if (!field_attr)
2194 return -EMSGSIZE;
2195 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2196 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2197 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2198 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2199 goto nla_put_failure;
2200 nla_nest_end(skb, field_attr);
2201 }
2202 return 0;
2203
2204nla_put_failure:
2205 nla_nest_cancel(skb, field_attr);
2206 return -EMSGSIZE;
2207}
2208
2209static int devlink_dpipe_header_put(struct sk_buff *skb,
2210 struct devlink_dpipe_header *header)
2211{
2212 struct nlattr *fields_attr, *header_attr;
2213 int err;
2214
2215 header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
Wei Yongjuncb6bf9c2017-04-11 16:02:02 +00002216 if (!header_attr)
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002217 return -EMSGSIZE;
2218
2219 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2220 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2221 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2222 goto nla_put_failure;
2223
2224 fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2225 if (!fields_attr)
2226 goto nla_put_failure;
2227
2228 err = devlink_dpipe_fields_put(skb, header);
2229 if (err) {
2230 nla_nest_cancel(skb, fields_attr);
2231 goto nla_put_failure;
2232 }
2233 nla_nest_end(skb, fields_attr);
2234 nla_nest_end(skb, header_attr);
2235 return 0;
2236
2237nla_put_failure:
2238 err = -EMSGSIZE;
2239 nla_nest_cancel(skb, header_attr);
2240 return err;
2241}
2242
2243static int devlink_dpipe_headers_fill(struct genl_info *info,
2244 enum devlink_command cmd, int flags,
2245 struct devlink_dpipe_headers *
2246 dpipe_headers)
2247{
2248 struct devlink *devlink = info->user_ptr[0];
2249 struct nlattr *headers_attr;
2250 struct sk_buff *skb = NULL;
2251 struct nlmsghdr *nlh;
2252 void *hdr;
2253 int i, j;
2254 int err;
2255
2256 i = 0;
2257start_again:
2258 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2259 if (err)
2260 return err;
2261
2262 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2263 &devlink_nl_family, NLM_F_MULTI, cmd);
Haishuang Yan6044bd42017-06-05 08:57:21 +08002264 if (!hdr) {
2265 nlmsg_free(skb);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002266 return -EMSGSIZE;
Haishuang Yan6044bd42017-06-05 08:57:21 +08002267 }
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002268
2269 if (devlink_nl_put_handle(skb, devlink))
2270 goto nla_put_failure;
2271 headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2272 if (!headers_attr)
2273 goto nla_put_failure;
2274
2275 j = 0;
2276 for (; i < dpipe_headers->headers_count; i++) {
2277 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2278 if (err) {
2279 if (!j)
2280 goto err_table_put;
2281 break;
2282 }
2283 j++;
2284 }
2285 nla_nest_end(skb, headers_attr);
2286 genlmsg_end(skb, hdr);
2287 if (i != dpipe_headers->headers_count)
2288 goto start_again;
2289
2290send_done:
2291 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2292 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2293 if (!nlh) {
2294 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2295 if (err)
Arkadi Sharshevsky7fe4d6d2018-03-18 17:37:22 +02002296 return err;
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002297 goto send_done;
2298 }
2299 return genlmsg_reply(skb, info);
2300
2301nla_put_failure:
2302 err = -EMSGSIZE;
2303err_table_put:
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02002304 nlmsg_free(skb);
2305 return err;
2306}
2307
2308static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2309 struct genl_info *info)
2310{
2311 struct devlink *devlink = info->user_ptr[0];
2312
2313 if (!devlink->dpipe_headers)
2314 return -EOPNOTSUPP;
2315 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2316 0, devlink->dpipe_headers);
2317}
2318
2319static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2320 const char *table_name,
2321 bool enable)
2322{
2323 struct devlink_dpipe_table *table;
2324
2325 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2326 table_name);
2327 if (!table)
2328 return -EINVAL;
2329
2330 if (table->counter_control_extern)
2331 return -EOPNOTSUPP;
2332
2333 if (!(table->counters_enabled ^ enable))
2334 return 0;
2335
2336 table->counters_enabled = enable;
2337 if (table->table_ops->counters_set_update)
2338 table->table_ops->counters_set_update(table->priv, enable);
2339 return 0;
2340}
2341
2342static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2343 struct genl_info *info)
2344{
2345 struct devlink *devlink = info->user_ptr[0];
2346 const char *table_name;
2347 bool counters_enable;
2348
2349 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2350 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2351 return -EINVAL;
2352
2353 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2354 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2355
2356 return devlink_dpipe_table_counters_set(devlink, table_name,
2357 counters_enable);
2358}
2359
Wei Yongjun43dd7512018-01-17 03:27:42 +00002360static struct devlink_resource *
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002361devlink_resource_find(struct devlink *devlink,
2362 struct devlink_resource *resource, u64 resource_id)
2363{
2364 struct list_head *resource_list;
2365
2366 if (resource)
2367 resource_list = &resource->resource_list;
2368 else
2369 resource_list = &devlink->resource_list;
2370
2371 list_for_each_entry(resource, resource_list, list) {
2372 struct devlink_resource *child_resource;
2373
2374 if (resource->id == resource_id)
2375 return resource;
2376
2377 child_resource = devlink_resource_find(devlink, resource,
2378 resource_id);
2379 if (child_resource)
2380 return child_resource;
2381 }
2382 return NULL;
2383}
2384
Wei Yongjun43dd7512018-01-17 03:27:42 +00002385static void
2386devlink_resource_validate_children(struct devlink_resource *resource)
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002387{
2388 struct devlink_resource *child_resource;
2389 bool size_valid = true;
2390 u64 parts_size = 0;
2391
2392 if (list_empty(&resource->resource_list))
2393 goto out;
2394
2395 list_for_each_entry(child_resource, &resource->resource_list, list)
2396 parts_size += child_resource->size_new;
2397
Arkadi Sharshevskyb9d17172018-02-26 10:59:53 +01002398 if (parts_size > resource->size_new)
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002399 size_valid = false;
2400out:
2401 resource->size_valid = size_valid;
2402}
2403
Arkadi Sharshevskycc944ea2018-02-20 08:44:20 +01002404static int
2405devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2406 struct netlink_ext_ack *extack)
2407{
2408 u64 reminder;
2409 int err = 0;
2410
David S. Miller0f3e9c92018-03-06 00:53:44 -05002411 if (size > resource->size_params.size_max) {
Arkadi Sharshevskycc944ea2018-02-20 08:44:20 +01002412 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2413 err = -EINVAL;
2414 }
2415
David S. Miller0f3e9c92018-03-06 00:53:44 -05002416 if (size < resource->size_params.size_min) {
Arkadi Sharshevskycc944ea2018-02-20 08:44:20 +01002417 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2418 err = -EINVAL;
2419 }
2420
David S. Miller0f3e9c92018-03-06 00:53:44 -05002421 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
Arkadi Sharshevskycc944ea2018-02-20 08:44:20 +01002422 if (reminder) {
2423 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2424 err = -EINVAL;
2425 }
2426
2427 return err;
2428}
2429
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002430static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2431 struct genl_info *info)
2432{
2433 struct devlink *devlink = info->user_ptr[0];
2434 struct devlink_resource *resource;
2435 u64 resource_id;
2436 u64 size;
2437 int err;
2438
2439 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2440 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2441 return -EINVAL;
2442 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2443
2444 resource = devlink_resource_find(devlink, NULL, resource_id);
2445 if (!resource)
2446 return -EINVAL;
2447
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002448 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
Arkadi Sharshevskycc944ea2018-02-20 08:44:20 +01002449 err = devlink_resource_validate_size(resource, size, info->extack);
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002450 if (err)
2451 return err;
2452
2453 resource->size_new = size;
2454 devlink_resource_validate_children(resource);
2455 if (resource->parent)
2456 devlink_resource_validate_children(resource->parent);
2457 return 0;
2458}
2459
Arkadi Sharshevsky3d18e4f2018-02-26 18:25:42 +02002460static int
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002461devlink_resource_size_params_put(struct devlink_resource *resource,
2462 struct sk_buff *skb)
2463{
2464 struct devlink_resource_size_params *size_params;
2465
Jiri Pirko77d27092018-02-28 13:12:09 +01002466 size_params = &resource->size_params;
Arkadi Sharshevsky3d18e4f2018-02-26 18:25:42 +02002467 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2468 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2469 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2470 size_params->size_max, DEVLINK_ATTR_PAD) ||
2471 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2472 size_params->size_min, DEVLINK_ATTR_PAD) ||
2473 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2474 return -EMSGSIZE;
2475 return 0;
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002476}
2477
Jiri Pirkofc56be42018-04-05 22:13:21 +02002478static int devlink_resource_occ_put(struct devlink_resource *resource,
2479 struct sk_buff *skb)
2480{
2481 if (!resource->occ_get)
2482 return 0;
2483 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2484 resource->occ_get(resource->occ_get_priv),
2485 DEVLINK_ATTR_PAD);
2486}
2487
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002488static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2489 struct devlink_resource *resource)
2490{
2491 struct devlink_resource *child_resource;
2492 struct nlattr *child_resource_attr;
2493 struct nlattr *resource_attr;
2494
2495 resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE);
2496 if (!resource_attr)
2497 return -EMSGSIZE;
2498
2499 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2500 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2501 DEVLINK_ATTR_PAD) ||
2502 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2503 DEVLINK_ATTR_PAD))
2504 goto nla_put_failure;
2505 if (resource->size != resource->size_new)
2506 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2507 resource->size_new, DEVLINK_ATTR_PAD);
Jiri Pirkofc56be42018-04-05 22:13:21 +02002508 if (devlink_resource_occ_put(resource, skb))
2509 goto nla_put_failure;
Arkadi Sharshevsky3d18e4f2018-02-26 18:25:42 +02002510 if (devlink_resource_size_params_put(resource, skb))
2511 goto nla_put_failure;
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002512 if (list_empty(&resource->resource_list))
2513 goto out;
2514
2515 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2516 resource->size_valid))
2517 goto nla_put_failure;
2518
2519 child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2520 if (!child_resource_attr)
2521 goto nla_put_failure;
2522
2523 list_for_each_entry(child_resource, &resource->resource_list, list) {
2524 if (devlink_resource_put(devlink, skb, child_resource))
2525 goto resource_put_failure;
2526 }
2527
2528 nla_nest_end(skb, child_resource_attr);
2529out:
2530 nla_nest_end(skb, resource_attr);
2531 return 0;
2532
2533resource_put_failure:
2534 nla_nest_cancel(skb, child_resource_attr);
2535nla_put_failure:
2536 nla_nest_cancel(skb, resource_attr);
2537 return -EMSGSIZE;
2538}
2539
2540static int devlink_resource_fill(struct genl_info *info,
2541 enum devlink_command cmd, int flags)
2542{
2543 struct devlink *devlink = info->user_ptr[0];
2544 struct devlink_resource *resource;
2545 struct nlattr *resources_attr;
2546 struct sk_buff *skb = NULL;
2547 struct nlmsghdr *nlh;
2548 bool incomplete;
2549 void *hdr;
2550 int i;
2551 int err;
2552
2553 resource = list_first_entry(&devlink->resource_list,
2554 struct devlink_resource, list);
2555start_again:
2556 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2557 if (err)
2558 return err;
2559
2560 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2561 &devlink_nl_family, NLM_F_MULTI, cmd);
2562 if (!hdr) {
2563 nlmsg_free(skb);
2564 return -EMSGSIZE;
2565 }
2566
2567 if (devlink_nl_put_handle(skb, devlink))
2568 goto nla_put_failure;
2569
2570 resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2571 if (!resources_attr)
2572 goto nla_put_failure;
2573
2574 incomplete = false;
2575 i = 0;
2576 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2577 err = devlink_resource_put(devlink, skb, resource);
2578 if (err) {
2579 if (!i)
2580 goto err_resource_put;
2581 incomplete = true;
2582 break;
2583 }
2584 i++;
2585 }
2586 nla_nest_end(skb, resources_attr);
2587 genlmsg_end(skb, hdr);
2588 if (incomplete)
2589 goto start_again;
2590send_done:
2591 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2592 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2593 if (!nlh) {
2594 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2595 if (err)
Dan Carpenter83fe9a92018-09-21 11:07:55 +03002596 return err;
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002597 goto send_done;
2598 }
2599 return genlmsg_reply(skb, info);
2600
2601nla_put_failure:
2602 err = -EMSGSIZE;
2603err_resource_put:
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01002604 nlmsg_free(skb);
2605 return err;
2606}
2607
2608static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2609 struct genl_info *info)
2610{
2611 struct devlink *devlink = info->user_ptr[0];
2612
2613 if (list_empty(&devlink->resource_list))
2614 return -EOPNOTSUPP;
2615
2616 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2617}
2618
Arkadi Sharshevsky2d8dc5b2018-01-15 08:59:04 +01002619static int
2620devlink_resources_validate(struct devlink *devlink,
2621 struct devlink_resource *resource,
2622 struct genl_info *info)
2623{
2624 struct list_head *resource_list;
2625 int err = 0;
2626
2627 if (resource)
2628 resource_list = &resource->resource_list;
2629 else
2630 resource_list = &devlink->resource_list;
2631
2632 list_for_each_entry(resource, resource_list, list) {
2633 if (!resource->size_valid)
2634 return -EINVAL;
2635 err = devlink_resources_validate(devlink, resource, info);
2636 if (err)
2637 return err;
2638 }
2639 return err;
2640}
2641
2642static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2643{
2644 struct devlink *devlink = info->user_ptr[0];
2645 int err;
2646
2647 if (!devlink->ops->reload)
2648 return -EOPNOTSUPP;
2649
2650 err = devlink_resources_validate(devlink, NULL, info);
2651 if (err) {
2652 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2653 return err;
2654 }
David Ahernac0fc8a2018-06-05 08:14:09 -07002655 return devlink->ops->reload(devlink, info->extack);
Arkadi Sharshevsky2d8dc5b2018-01-15 08:59:04 +01002656}
2657
Jakub Kicinski76726cc2019-02-14 13:40:44 -08002658static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
2659 struct genl_info *info)
2660{
2661 struct devlink *devlink = info->user_ptr[0];
2662 const char *file_name, *component;
2663 struct nlattr *nla_component;
2664
2665 if (!devlink->ops->flash_update)
2666 return -EOPNOTSUPP;
2667
2668 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
2669 return -EINVAL;
2670 file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
2671
2672 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
2673 component = nla_component ? nla_data(nla_component) : NULL;
2674
2675 return devlink->ops->flash_update(devlink, file_name, component,
2676 info->extack);
2677}
2678
Moshe Shemesh036467c2018-07-04 14:30:33 +03002679static const struct devlink_param devlink_param_generic[] = {
2680 {
2681 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2682 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2683 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2684 },
2685 {
2686 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2687 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2688 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2689 },
Vasundhara Volamf567bcd2018-07-04 14:30:36 +03002690 {
2691 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2692 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2693 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2694 },
Alex Veskerf6a698852018-07-12 15:13:17 +03002695 {
2696 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2697 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2698 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2699 },
Vasundhara Volame3b51062018-10-04 11:13:44 +05302700 {
2701 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2702 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2703 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2704 },
Vasundhara Volamf61cba42018-10-04 11:13:45 +05302705 {
2706 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
2707 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
2708 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
2709 },
Vasundhara Volam16511782018-10-04 11:13:46 +05302710 {
2711 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
2712 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
2713 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
2714 },
Shalom Toledo846e9802018-12-03 07:58:59 +00002715 {
2716 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
2717 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
2718 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
2719 },
Moshe Shemesh036467c2018-07-04 14:30:33 +03002720};
Moshe Shemesheabaef12018-07-04 14:30:28 +03002721
2722static int devlink_param_generic_verify(const struct devlink_param *param)
2723{
2724 /* verify it match generic parameter by id and name */
2725 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
2726 return -EINVAL;
2727 if (strcmp(param->name, devlink_param_generic[param->id].name))
2728 return -ENOENT;
2729
2730 WARN_ON(param->type != devlink_param_generic[param->id].type);
2731
2732 return 0;
2733}
2734
2735static int devlink_param_driver_verify(const struct devlink_param *param)
2736{
2737 int i;
2738
2739 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
2740 return -EINVAL;
2741 /* verify no such name in generic params */
2742 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
2743 if (!strcmp(param->name, devlink_param_generic[i].name))
2744 return -EEXIST;
2745
2746 return 0;
2747}
2748
2749static struct devlink_param_item *
2750devlink_param_find_by_name(struct list_head *param_list,
2751 const char *param_name)
2752{
2753 struct devlink_param_item *param_item;
2754
2755 list_for_each_entry(param_item, param_list, list)
2756 if (!strcmp(param_item->param->name, param_name))
2757 return param_item;
2758 return NULL;
2759}
2760
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03002761static struct devlink_param_item *
2762devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
2763{
2764 struct devlink_param_item *param_item;
2765
2766 list_for_each_entry(param_item, param_list, list)
2767 if (param_item->param->id == param_id)
2768 return param_item;
2769 return NULL;
2770}
2771
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002772static bool
2773devlink_param_cmode_is_supported(const struct devlink_param *param,
2774 enum devlink_param_cmode cmode)
2775{
2776 return test_bit(cmode, &param->supported_cmodes);
2777}
2778
2779static int devlink_param_get(struct devlink *devlink,
2780 const struct devlink_param *param,
2781 struct devlink_param_gset_ctx *ctx)
2782{
2783 if (!param->get)
2784 return -EOPNOTSUPP;
2785 return param->get(devlink, param->id, ctx);
2786}
2787
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03002788static int devlink_param_set(struct devlink *devlink,
2789 const struct devlink_param *param,
2790 struct devlink_param_gset_ctx *ctx)
2791{
2792 if (!param->set)
2793 return -EOPNOTSUPP;
2794 return param->set(devlink, param->id, ctx);
2795}
2796
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002797static int
2798devlink_param_type_to_nla_type(enum devlink_param_type param_type)
2799{
2800 switch (param_type) {
2801 case DEVLINK_PARAM_TYPE_U8:
2802 return NLA_U8;
2803 case DEVLINK_PARAM_TYPE_U16:
2804 return NLA_U16;
2805 case DEVLINK_PARAM_TYPE_U32:
2806 return NLA_U32;
2807 case DEVLINK_PARAM_TYPE_STRING:
2808 return NLA_STRING;
2809 case DEVLINK_PARAM_TYPE_BOOL:
2810 return NLA_FLAG;
2811 default:
2812 return -EINVAL;
2813 }
2814}
2815
2816static int
2817devlink_nl_param_value_fill_one(struct sk_buff *msg,
2818 enum devlink_param_type type,
2819 enum devlink_param_cmode cmode,
2820 union devlink_param_value val)
2821{
2822 struct nlattr *param_value_attr;
2823
2824 param_value_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUE);
2825 if (!param_value_attr)
2826 goto nla_put_failure;
2827
2828 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
2829 goto value_nest_cancel;
2830
2831 switch (type) {
2832 case DEVLINK_PARAM_TYPE_U8:
2833 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
2834 goto value_nest_cancel;
2835 break;
2836 case DEVLINK_PARAM_TYPE_U16:
2837 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
2838 goto value_nest_cancel;
2839 break;
2840 case DEVLINK_PARAM_TYPE_U32:
2841 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
2842 goto value_nest_cancel;
2843 break;
2844 case DEVLINK_PARAM_TYPE_STRING:
2845 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
2846 val.vstr))
2847 goto value_nest_cancel;
2848 break;
2849 case DEVLINK_PARAM_TYPE_BOOL:
2850 if (val.vbool &&
2851 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
2852 goto value_nest_cancel;
2853 break;
2854 }
2855
2856 nla_nest_end(msg, param_value_attr);
2857 return 0;
2858
2859value_nest_cancel:
2860 nla_nest_cancel(msg, param_value_attr);
2861nla_put_failure:
2862 return -EMSGSIZE;
2863}
2864
2865static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
Vasundhara Volamf4601de2019-01-28 18:00:21 +05302866 unsigned int port_index,
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002867 struct devlink_param_item *param_item,
2868 enum devlink_command cmd,
2869 u32 portid, u32 seq, int flags)
2870{
2871 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
Jiri Pirko7c62cfb2019-02-07 11:22:45 +00002872 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002873 const struct devlink_param *param = param_item->param;
2874 struct devlink_param_gset_ctx ctx;
2875 struct nlattr *param_values_list;
2876 struct nlattr *param_attr;
2877 int nla_type;
2878 void *hdr;
2879 int err;
2880 int i;
2881
2882 /* Get value from driver part to driverinit configuration mode */
2883 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
2884 if (!devlink_param_cmode_is_supported(param, i))
2885 continue;
2886 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
2887 if (!param_item->driverinit_value_valid)
2888 return -EOPNOTSUPP;
2889 param_value[i] = param_item->driverinit_value;
2890 } else {
Jiri Pirko7c62cfb2019-02-07 11:22:45 +00002891 if (!param_item->published)
2892 continue;
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002893 ctx.cmode = i;
2894 err = devlink_param_get(devlink, param, &ctx);
2895 if (err)
2896 return err;
2897 param_value[i] = ctx.val;
2898 }
Jiri Pirko7c62cfb2019-02-07 11:22:45 +00002899 param_value_set[i] = true;
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002900 }
2901
2902 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2903 if (!hdr)
2904 return -EMSGSIZE;
2905
2906 if (devlink_nl_put_handle(msg, devlink))
2907 goto genlmsg_cancel;
Vasundhara Volamf4601de2019-01-28 18:00:21 +05302908
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05302909 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
2910 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
2911 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
Vasundhara Volamf4601de2019-01-28 18:00:21 +05302912 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
2913 goto genlmsg_cancel;
2914
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002915 param_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM);
2916 if (!param_attr)
2917 goto genlmsg_cancel;
2918 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
2919 goto param_nest_cancel;
2920 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
2921 goto param_nest_cancel;
2922
2923 nla_type = devlink_param_type_to_nla_type(param->type);
2924 if (nla_type < 0)
2925 goto param_nest_cancel;
2926 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
2927 goto param_nest_cancel;
2928
2929 param_values_list = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUES_LIST);
2930 if (!param_values_list)
2931 goto param_nest_cancel;
2932
2933 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
Jiri Pirko7c62cfb2019-02-07 11:22:45 +00002934 if (!param_value_set[i])
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002935 continue;
2936 err = devlink_nl_param_value_fill_one(msg, param->type,
2937 i, param_value[i]);
2938 if (err)
2939 goto values_list_nest_cancel;
2940 }
2941
2942 nla_nest_end(msg, param_values_list);
2943 nla_nest_end(msg, param_attr);
2944 genlmsg_end(msg, hdr);
2945 return 0;
2946
2947values_list_nest_cancel:
2948 nla_nest_end(msg, param_values_list);
2949param_nest_cancel:
2950 nla_nest_cancel(msg, param_attr);
2951genlmsg_cancel:
2952 genlmsg_cancel(msg, hdr);
2953 return -EMSGSIZE;
2954}
2955
Moshe Shemeshea601e12018-07-04 14:30:32 +03002956static void devlink_param_notify(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05302957 unsigned int port_index,
Moshe Shemeshea601e12018-07-04 14:30:32 +03002958 struct devlink_param_item *param_item,
2959 enum devlink_command cmd)
2960{
2961 struct sk_buff *msg;
2962 int err;
2963
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05302964 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
2965 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
2966 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
Moshe Shemeshea601e12018-07-04 14:30:32 +03002967
2968 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2969 if (!msg)
2970 return;
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05302971 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
2972 0, 0, 0);
Moshe Shemeshea601e12018-07-04 14:30:32 +03002973 if (err) {
2974 nlmsg_free(msg);
2975 return;
2976 }
2977
2978 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2979 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2980}
2981
Moshe Shemesh45f05de2018-07-04 14:30:29 +03002982static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
2983 struct netlink_callback *cb)
2984{
2985 struct devlink_param_item *param_item;
2986 struct devlink *devlink;
2987 int start = cb->args[0];
2988 int idx = 0;
2989 int err;
2990
2991 mutex_lock(&devlink_mutex);
2992 list_for_each_entry(devlink, &devlink_list, list) {
2993 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
2994 continue;
2995 mutex_lock(&devlink->lock);
2996 list_for_each_entry(param_item, &devlink->param_list, list) {
2997 if (idx < start) {
2998 idx++;
2999 continue;
3000 }
Vasundhara Volamf4601de2019-01-28 18:00:21 +05303001 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
Moshe Shemesh45f05de2018-07-04 14:30:29 +03003002 DEVLINK_CMD_PARAM_GET,
3003 NETLINK_CB(cb->skb).portid,
3004 cb->nlh->nlmsg_seq,
3005 NLM_F_MULTI);
3006 if (err) {
3007 mutex_unlock(&devlink->lock);
3008 goto out;
3009 }
3010 idx++;
3011 }
3012 mutex_unlock(&devlink->lock);
3013 }
3014out:
3015 mutex_unlock(&devlink_mutex);
3016
3017 cb->args[0] = idx;
3018 return msg->len;
3019}
3020
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003021static int
3022devlink_param_type_get_from_info(struct genl_info *info,
3023 enum devlink_param_type *param_type)
3024{
3025 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3026 return -EINVAL;
3027
3028 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3029 case NLA_U8:
3030 *param_type = DEVLINK_PARAM_TYPE_U8;
3031 break;
3032 case NLA_U16:
3033 *param_type = DEVLINK_PARAM_TYPE_U16;
3034 break;
3035 case NLA_U32:
3036 *param_type = DEVLINK_PARAM_TYPE_U32;
3037 break;
3038 case NLA_STRING:
3039 *param_type = DEVLINK_PARAM_TYPE_STRING;
3040 break;
3041 case NLA_FLAG:
3042 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3043 break;
3044 default:
3045 return -EINVAL;
3046 }
3047
3048 return 0;
3049}
3050
3051static int
3052devlink_param_value_get_from_info(const struct devlink_param *param,
3053 struct genl_info *info,
3054 union devlink_param_value *value)
3055{
Moshe Shemeshf355cfc2018-10-10 16:09:25 +03003056 int len;
3057
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003058 if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
3059 !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
3060 return -EINVAL;
3061
3062 switch (param->type) {
3063 case DEVLINK_PARAM_TYPE_U8:
3064 value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3065 break;
3066 case DEVLINK_PARAM_TYPE_U16:
3067 value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3068 break;
3069 case DEVLINK_PARAM_TYPE_U32:
3070 value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3071 break;
3072 case DEVLINK_PARAM_TYPE_STRING:
Moshe Shemeshf355cfc2018-10-10 16:09:25 +03003073 len = strnlen(nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]),
3074 nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
3075 if (len == nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) ||
Moshe Shemeshbde74ad12018-10-10 16:09:27 +03003076 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003077 return -EINVAL;
Moshe Shemeshf355cfc2018-10-10 16:09:25 +03003078 strcpy(value->vstr,
3079 nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003080 break;
3081 case DEVLINK_PARAM_TYPE_BOOL:
3082 value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
3083 true : false;
3084 break;
3085 }
3086 return 0;
3087}
3088
Moshe Shemesh45f05de2018-07-04 14:30:29 +03003089static struct devlink_param_item *
Vasundhara Volamf4601de2019-01-28 18:00:21 +05303090devlink_param_get_from_info(struct list_head *param_list,
Moshe Shemesh45f05de2018-07-04 14:30:29 +03003091 struct genl_info *info)
3092{
3093 char *param_name;
3094
3095 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3096 return NULL;
3097
3098 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
Vasundhara Volamf4601de2019-01-28 18:00:21 +05303099 return devlink_param_find_by_name(param_list, param_name);
Moshe Shemesh45f05de2018-07-04 14:30:29 +03003100}
3101
3102static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3103 struct genl_info *info)
3104{
3105 struct devlink *devlink = info->user_ptr[0];
3106 struct devlink_param_item *param_item;
3107 struct sk_buff *msg;
3108 int err;
3109
Vasundhara Volamf4601de2019-01-28 18:00:21 +05303110 param_item = devlink_param_get_from_info(&devlink->param_list, info);
Moshe Shemesh45f05de2018-07-04 14:30:29 +03003111 if (!param_item)
3112 return -EINVAL;
3113
3114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3115 if (!msg)
3116 return -ENOMEM;
3117
Vasundhara Volamf4601de2019-01-28 18:00:21 +05303118 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
Moshe Shemesh45f05de2018-07-04 14:30:29 +03003119 DEVLINK_CMD_PARAM_GET,
3120 info->snd_portid, info->snd_seq, 0);
3121 if (err) {
3122 nlmsg_free(msg);
3123 return err;
3124 }
3125
3126 return genlmsg_reply(msg, info);
3127}
3128
Vasundhara Volam9c548732019-01-28 18:00:22 +05303129static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303130 unsigned int port_index,
Vasundhara Volam9c548732019-01-28 18:00:22 +05303131 struct list_head *param_list,
3132 struct genl_info *info,
3133 enum devlink_command cmd)
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003134{
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003135 enum devlink_param_type param_type;
3136 struct devlink_param_gset_ctx ctx;
3137 enum devlink_param_cmode cmode;
3138 struct devlink_param_item *param_item;
3139 const struct devlink_param *param;
3140 union devlink_param_value value;
3141 int err = 0;
3142
Vasundhara Volam9c548732019-01-28 18:00:22 +05303143 param_item = devlink_param_get_from_info(param_list, info);
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003144 if (!param_item)
3145 return -EINVAL;
3146 param = param_item->param;
3147 err = devlink_param_type_get_from_info(info, &param_type);
3148 if (err)
3149 return err;
3150 if (param_type != param->type)
3151 return -EINVAL;
3152 err = devlink_param_value_get_from_info(param, info, &value);
3153 if (err)
3154 return err;
3155 if (param->validate) {
3156 err = param->validate(devlink, param->id, value, info->extack);
3157 if (err)
3158 return err;
3159 }
3160
3161 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3162 return -EINVAL;
3163 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3164 if (!devlink_param_cmode_is_supported(param, cmode))
3165 return -EOPNOTSUPP;
3166
3167 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
Moshe Shemesh12765342018-10-10 16:09:26 +03003168 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3169 strcpy(param_item->driverinit_value.vstr, value.vstr);
3170 else
3171 param_item->driverinit_value = value;
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003172 param_item->driverinit_value_valid = true;
3173 } else {
3174 if (!param->set)
3175 return -EOPNOTSUPP;
3176 ctx.val = value;
3177 ctx.cmode = cmode;
3178 err = devlink_param_set(devlink, param, &ctx);
3179 if (err)
3180 return err;
3181 }
3182
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303183 devlink_param_notify(devlink, port_index, param_item, cmd);
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03003184 return 0;
3185}
3186
Vasundhara Volam9c548732019-01-28 18:00:22 +05303187static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3188 struct genl_info *info)
3189{
3190 struct devlink *devlink = info->user_ptr[0];
3191
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303192 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
Vasundhara Volam9c548732019-01-28 18:00:22 +05303193 info, DEVLINK_CMD_PARAM_NEW);
3194}
3195
Moshe Shemesheabaef12018-07-04 14:30:28 +03003196static int devlink_param_register_one(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303197 unsigned int port_index,
Vasundhara Volam39e61602019-01-28 18:00:20 +05303198 struct list_head *param_list,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303199 const struct devlink_param *param,
3200 enum devlink_command cmd)
Moshe Shemesheabaef12018-07-04 14:30:28 +03003201{
3202 struct devlink_param_item *param_item;
3203
Vasundhara Volam39e61602019-01-28 18:00:20 +05303204 if (devlink_param_find_by_name(param_list, param->name))
Moshe Shemesheabaef12018-07-04 14:30:28 +03003205 return -EEXIST;
3206
3207 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3208 WARN_ON(param->get || param->set);
3209 else
3210 WARN_ON(!param->get || !param->set);
3211
3212 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3213 if (!param_item)
3214 return -ENOMEM;
3215 param_item->param = param;
3216
Vasundhara Volam39e61602019-01-28 18:00:20 +05303217 list_add_tail(&param_item->list, param_list);
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303218 devlink_param_notify(devlink, port_index, param_item, cmd);
Moshe Shemesheabaef12018-07-04 14:30:28 +03003219 return 0;
3220}
3221
3222static void devlink_param_unregister_one(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303223 unsigned int port_index,
Vasundhara Volam39e61602019-01-28 18:00:20 +05303224 struct list_head *param_list,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303225 const struct devlink_param *param,
3226 enum devlink_command cmd)
Moshe Shemesheabaef12018-07-04 14:30:28 +03003227{
3228 struct devlink_param_item *param_item;
3229
Vasundhara Volam39e61602019-01-28 18:00:20 +05303230 param_item = devlink_param_find_by_name(param_list, param->name);
Moshe Shemesheabaef12018-07-04 14:30:28 +03003231 WARN_ON(!param_item);
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303232 devlink_param_notify(devlink, port_index, param_item, cmd);
Moshe Shemesheabaef12018-07-04 14:30:28 +03003233 list_del(&param_item->list);
3234 kfree(param_item);
3235}
3236
Vasundhara Volamf4601de2019-01-28 18:00:21 +05303237static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3238 struct netlink_callback *cb)
3239{
3240 struct devlink_param_item *param_item;
3241 struct devlink_port *devlink_port;
3242 struct devlink *devlink;
3243 int start = cb->args[0];
3244 int idx = 0;
3245 int err;
3246
3247 mutex_lock(&devlink_mutex);
3248 list_for_each_entry(devlink, &devlink_list, list) {
3249 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3250 continue;
3251 mutex_lock(&devlink->lock);
3252 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3253 list_for_each_entry(param_item,
3254 &devlink_port->param_list, list) {
3255 if (idx < start) {
3256 idx++;
3257 continue;
3258 }
3259 err = devlink_nl_param_fill(msg,
3260 devlink_port->devlink,
3261 devlink_port->index, param_item,
3262 DEVLINK_CMD_PORT_PARAM_GET,
3263 NETLINK_CB(cb->skb).portid,
3264 cb->nlh->nlmsg_seq,
3265 NLM_F_MULTI);
3266 if (err) {
3267 mutex_unlock(&devlink->lock);
3268 goto out;
3269 }
3270 idx++;
3271 }
3272 }
3273 mutex_unlock(&devlink->lock);
3274 }
3275out:
3276 mutex_unlock(&devlink_mutex);
3277
3278 cb->args[0] = idx;
3279 return msg->len;
3280}
3281
3282static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3283 struct genl_info *info)
3284{
3285 struct devlink_port *devlink_port = info->user_ptr[0];
3286 struct devlink_param_item *param_item;
3287 struct sk_buff *msg;
3288 int err;
3289
3290 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3291 info);
3292 if (!param_item)
3293 return -EINVAL;
3294
3295 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3296 if (!msg)
3297 return -ENOMEM;
3298
3299 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3300 devlink_port->index, param_item,
3301 DEVLINK_CMD_PORT_PARAM_GET,
3302 info->snd_portid, info->snd_seq, 0);
3303 if (err) {
3304 nlmsg_free(msg);
3305 return err;
3306 }
3307
3308 return genlmsg_reply(msg, info);
3309}
3310
Vasundhara Volam9c548732019-01-28 18:00:22 +05303311static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3312 struct genl_info *info)
3313{
3314 struct devlink_port *devlink_port = info->user_ptr[0];
3315
3316 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05303317 devlink_port->index,
3318 &devlink_port->param_list, info,
3319 DEVLINK_CMD_PORT_PARAM_NEW);
Vasundhara Volam9c548732019-01-28 18:00:22 +05303320}
3321
Alex Veskera006d462018-07-12 15:13:12 +03003322static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3323 struct devlink *devlink,
3324 struct devlink_snapshot *snapshot)
3325{
3326 struct nlattr *snap_attr;
3327 int err;
3328
3329 snap_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
3330 if (!snap_attr)
3331 return -EINVAL;
3332
3333 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3334 if (err)
3335 goto nla_put_failure;
3336
3337 nla_nest_end(msg, snap_attr);
3338 return 0;
3339
3340nla_put_failure:
3341 nla_nest_cancel(msg, snap_attr);
3342 return err;
3343}
3344
3345static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3346 struct devlink *devlink,
3347 struct devlink_region *region)
3348{
3349 struct devlink_snapshot *snapshot;
3350 struct nlattr *snapshots_attr;
3351 int err;
3352
3353 snapshots_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOTS);
3354 if (!snapshots_attr)
3355 return -EINVAL;
3356
3357 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3358 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3359 if (err)
3360 goto nla_put_failure;
3361 }
3362
3363 nla_nest_end(msg, snapshots_attr);
3364 return 0;
3365
3366nla_put_failure:
3367 nla_nest_cancel(msg, snapshots_attr);
3368 return err;
3369}
3370
Alex Veskerd8db7ea52018-07-12 15:13:11 +03003371static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3372 enum devlink_command cmd, u32 portid,
3373 u32 seq, int flags,
3374 struct devlink_region *region)
3375{
3376 void *hdr;
3377 int err;
3378
3379 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3380 if (!hdr)
3381 return -EMSGSIZE;
3382
3383 err = devlink_nl_put_handle(msg, devlink);
3384 if (err)
3385 goto nla_put_failure;
3386
3387 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3388 if (err)
3389 goto nla_put_failure;
3390
3391 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3392 region->size,
3393 DEVLINK_ATTR_PAD);
3394 if (err)
3395 goto nla_put_failure;
3396
Alex Veskera006d462018-07-12 15:13:12 +03003397 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3398 if (err)
3399 goto nla_put_failure;
3400
Alex Veskerd8db7ea52018-07-12 15:13:11 +03003401 genlmsg_end(msg, hdr);
3402 return 0;
3403
3404nla_put_failure:
3405 genlmsg_cancel(msg, hdr);
3406 return err;
3407}
3408
Alex Vesker866319b2018-07-12 15:13:13 +03003409static void devlink_nl_region_notify(struct devlink_region *region,
3410 struct devlink_snapshot *snapshot,
3411 enum devlink_command cmd)
3412{
3413 struct devlink *devlink = region->devlink;
3414 struct sk_buff *msg;
3415 void *hdr;
3416 int err;
3417
3418 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3419
3420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3421 if (!msg)
3422 return;
3423
3424 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3425 if (!hdr)
3426 goto out_free_msg;
3427
3428 err = devlink_nl_put_handle(msg, devlink);
3429 if (err)
3430 goto out_cancel_msg;
3431
3432 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3433 region->name);
3434 if (err)
3435 goto out_cancel_msg;
3436
3437 if (snapshot) {
3438 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3439 snapshot->id);
3440 if (err)
3441 goto out_cancel_msg;
3442 } else {
3443 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3444 region->size, DEVLINK_ATTR_PAD);
3445 if (err)
3446 goto out_cancel_msg;
3447 }
3448 genlmsg_end(msg, hdr);
3449
3450 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3451 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3452
3453 return;
3454
3455out_cancel_msg:
3456 genlmsg_cancel(msg, hdr);
3457out_free_msg:
3458 nlmsg_free(msg);
3459}
3460
Alex Veskerd8db7ea52018-07-12 15:13:11 +03003461static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3462 struct genl_info *info)
3463{
3464 struct devlink *devlink = info->user_ptr[0];
3465 struct devlink_region *region;
3466 const char *region_name;
3467 struct sk_buff *msg;
3468 int err;
3469
3470 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3471 return -EINVAL;
3472
3473 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3474 region = devlink_region_get_by_name(devlink, region_name);
3475 if (!region)
3476 return -EINVAL;
3477
3478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3479 if (!msg)
3480 return -ENOMEM;
3481
3482 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3483 info->snd_portid, info->snd_seq, 0,
3484 region);
3485 if (err) {
3486 nlmsg_free(msg);
3487 return err;
3488 }
3489
3490 return genlmsg_reply(msg, info);
3491}
3492
3493static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3494 struct netlink_callback *cb)
3495{
3496 struct devlink_region *region;
3497 struct devlink *devlink;
3498 int start = cb->args[0];
3499 int idx = 0;
3500 int err;
3501
3502 mutex_lock(&devlink_mutex);
3503 list_for_each_entry(devlink, &devlink_list, list) {
3504 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3505 continue;
3506
3507 mutex_lock(&devlink->lock);
3508 list_for_each_entry(region, &devlink->region_list, list) {
3509 if (idx < start) {
3510 idx++;
3511 continue;
3512 }
3513 err = devlink_nl_region_fill(msg, devlink,
3514 DEVLINK_CMD_REGION_GET,
3515 NETLINK_CB(cb->skb).portid,
3516 cb->nlh->nlmsg_seq,
3517 NLM_F_MULTI, region);
3518 if (err) {
3519 mutex_unlock(&devlink->lock);
3520 goto out;
3521 }
3522 idx++;
3523 }
3524 mutex_unlock(&devlink->lock);
3525 }
3526out:
3527 mutex_unlock(&devlink_mutex);
3528 cb->args[0] = idx;
3529 return msg->len;
3530}
3531
Alex Vesker866319b2018-07-12 15:13:13 +03003532static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3533 struct genl_info *info)
3534{
3535 struct devlink *devlink = info->user_ptr[0];
3536 struct devlink_snapshot *snapshot;
3537 struct devlink_region *region;
3538 const char *region_name;
3539 u32 snapshot_id;
3540
3541 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3542 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3543 return -EINVAL;
3544
3545 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3546 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3547
3548 region = devlink_region_get_by_name(devlink, region_name);
3549 if (!region)
3550 return -EINVAL;
3551
3552 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3553 if (!snapshot)
3554 return -EINVAL;
3555
3556 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3557 devlink_region_snapshot_del(snapshot);
3558 return 0;
3559}
3560
Alex Vesker4e547952018-07-12 15:13:14 +03003561static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3562 struct devlink *devlink,
3563 u8 *chunk, u32 chunk_size,
3564 u64 addr)
3565{
3566 struct nlattr *chunk_attr;
3567 int err;
3568
3569 chunk_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_CHUNK);
3570 if (!chunk_attr)
3571 return -EINVAL;
3572
3573 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3574 if (err)
3575 goto nla_put_failure;
3576
3577 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3578 DEVLINK_ATTR_PAD);
3579 if (err)
3580 goto nla_put_failure;
3581
3582 nla_nest_end(msg, chunk_attr);
3583 return 0;
3584
3585nla_put_failure:
3586 nla_nest_cancel(msg, chunk_attr);
3587 return err;
3588}
3589
3590#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3591
3592static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3593 struct devlink *devlink,
3594 struct devlink_region *region,
3595 struct nlattr **attrs,
3596 u64 start_offset,
3597 u64 end_offset,
3598 bool dump,
3599 u64 *new_offset)
3600{
3601 struct devlink_snapshot *snapshot;
3602 u64 curr_offset = start_offset;
3603 u32 snapshot_id;
3604 int err = 0;
3605
3606 *new_offset = start_offset;
3607
3608 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3609 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3610 if (!snapshot)
3611 return -EINVAL;
3612
3613 if (end_offset > snapshot->data_len || dump)
3614 end_offset = snapshot->data_len;
3615
3616 while (curr_offset < end_offset) {
3617 u32 data_size;
3618 u8 *data;
3619
3620 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3621 data_size = end_offset - curr_offset;
3622 else
3623 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3624
3625 data = &snapshot->data[curr_offset];
3626 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3627 data, data_size,
3628 curr_offset);
3629 if (err)
3630 break;
3631
3632 curr_offset += data_size;
3633 }
3634 *new_offset = curr_offset;
3635
3636 return err;
3637}
3638
3639static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3640 struct netlink_callback *cb)
3641{
3642 u64 ret_offset, start_offset, end_offset = 0;
Alex Vesker4e547952018-07-12 15:13:14 +03003643 const struct genl_ops *ops = cb->data;
3644 struct devlink_region *region;
3645 struct nlattr *chunks_attr;
3646 const char *region_name;
3647 struct devlink *devlink;
Jakub Kicinski68750562019-02-10 19:35:28 -08003648 struct nlattr **attrs;
Alex Vesker4e547952018-07-12 15:13:14 +03003649 bool dump = true;
3650 void *hdr;
3651 int err;
3652
3653 start_offset = *((u64 *)&cb->args[0]);
3654
Jakub Kicinski68750562019-02-10 19:35:28 -08003655 attrs = kmalloc_array(DEVLINK_ATTR_MAX + 1, sizeof(*attrs), GFP_KERNEL);
3656 if (!attrs)
3657 return -ENOMEM;
3658
Alex Vesker4e547952018-07-12 15:13:14 +03003659 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + devlink_nl_family.hdrsize,
David Aherndac9c972018-10-07 20:16:24 -07003660 attrs, DEVLINK_ATTR_MAX, ops->policy, cb->extack);
Alex Vesker4e547952018-07-12 15:13:14 +03003661 if (err)
Jakub Kicinski68750562019-02-10 19:35:28 -08003662 goto out_free;
Alex Vesker4e547952018-07-12 15:13:14 +03003663
Parav Panditdac7c082019-02-12 14:24:08 -06003664 mutex_lock(&devlink_mutex);
Alex Vesker4e547952018-07-12 15:13:14 +03003665 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
Parav Panditfdd41ec2019-02-12 14:23:58 -06003666 if (IS_ERR(devlink)) {
3667 err = PTR_ERR(devlink);
Parav Panditdac7c082019-02-12 14:24:08 -06003668 goto out_dev;
Parav Panditfdd41ec2019-02-12 14:23:58 -06003669 }
Alex Vesker4e547952018-07-12 15:13:14 +03003670
Alex Vesker4e547952018-07-12 15:13:14 +03003671 mutex_lock(&devlink->lock);
3672
3673 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
Parav Panditfdd41ec2019-02-12 14:23:58 -06003674 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
3675 err = -EINVAL;
Alex Vesker4e547952018-07-12 15:13:14 +03003676 goto out_unlock;
Parav Panditfdd41ec2019-02-12 14:23:58 -06003677 }
Alex Vesker4e547952018-07-12 15:13:14 +03003678
3679 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3680 region = devlink_region_get_by_name(devlink, region_name);
Parav Panditfdd41ec2019-02-12 14:23:58 -06003681 if (!region) {
3682 err = -EINVAL;
Alex Vesker4e547952018-07-12 15:13:14 +03003683 goto out_unlock;
Parav Panditfdd41ec2019-02-12 14:23:58 -06003684 }
Alex Vesker4e547952018-07-12 15:13:14 +03003685
3686 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3687 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3688 DEVLINK_CMD_REGION_READ);
Parav Panditfdd41ec2019-02-12 14:23:58 -06003689 if (!hdr) {
3690 err = -EMSGSIZE;
Alex Vesker4e547952018-07-12 15:13:14 +03003691 goto out_unlock;
Parav Panditfdd41ec2019-02-12 14:23:58 -06003692 }
Alex Vesker4e547952018-07-12 15:13:14 +03003693
3694 err = devlink_nl_put_handle(skb, devlink);
3695 if (err)
3696 goto nla_put_failure;
3697
3698 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
3699 if (err)
3700 goto nla_put_failure;
3701
3702 chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS);
Parav Panditfdd41ec2019-02-12 14:23:58 -06003703 if (!chunks_attr) {
3704 err = -EMSGSIZE;
Alex Vesker4e547952018-07-12 15:13:14 +03003705 goto nla_put_failure;
Parav Panditfdd41ec2019-02-12 14:23:58 -06003706 }
Alex Vesker4e547952018-07-12 15:13:14 +03003707
3708 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
3709 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
3710 if (!start_offset)
3711 start_offset =
3712 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3713
3714 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3715 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
3716 dump = false;
3717 }
3718
3719 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
3720 region, attrs,
3721 start_offset,
3722 end_offset, dump,
3723 &ret_offset);
3724
3725 if (err && err != -EMSGSIZE)
3726 goto nla_put_failure;
3727
3728 /* Check if there was any progress done to prevent infinite loop */
Parav Panditfdd41ec2019-02-12 14:23:58 -06003729 if (ret_offset == start_offset) {
3730 err = -EINVAL;
Alex Vesker4e547952018-07-12 15:13:14 +03003731 goto nla_put_failure;
Parav Panditfdd41ec2019-02-12 14:23:58 -06003732 }
Alex Vesker4e547952018-07-12 15:13:14 +03003733
3734 *((u64 *)&cb->args[0]) = ret_offset;
3735
3736 nla_nest_end(skb, chunks_attr);
3737 genlmsg_end(skb, hdr);
3738 mutex_unlock(&devlink->lock);
3739 mutex_unlock(&devlink_mutex);
Jakub Kicinski68750562019-02-10 19:35:28 -08003740 kfree(attrs);
Alex Vesker4e547952018-07-12 15:13:14 +03003741
3742 return skb->len;
3743
3744nla_put_failure:
3745 genlmsg_cancel(skb, hdr);
3746out_unlock:
3747 mutex_unlock(&devlink->lock);
Parav Panditdac7c082019-02-12 14:24:08 -06003748out_dev:
Alex Vesker4e547952018-07-12 15:13:14 +03003749 mutex_unlock(&devlink_mutex);
Jakub Kicinski68750562019-02-10 19:35:28 -08003750out_free:
3751 kfree(attrs);
Parav Panditfdd41ec2019-02-12 14:23:58 -06003752 return err;
Alex Vesker4e547952018-07-12 15:13:14 +03003753}
3754
Jakub Kicinskif9cf2282019-01-31 10:50:40 -08003755struct devlink_info_req {
3756 struct sk_buff *msg;
3757};
3758
3759int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
3760{
3761 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
3762}
3763EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
3764
3765int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
3766{
3767 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
3768}
3769EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
3770
Jakub Kicinskifc6fae72019-01-31 10:50:41 -08003771static int devlink_info_version_put(struct devlink_info_req *req, int attr,
3772 const char *version_name,
3773 const char *version_value)
3774{
3775 struct nlattr *nest;
3776 int err;
3777
3778 nest = nla_nest_start(req->msg, attr);
3779 if (!nest)
3780 return -EMSGSIZE;
3781
3782 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
3783 version_name);
3784 if (err)
3785 goto nla_put_failure;
3786
3787 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
3788 version_value);
3789 if (err)
3790 goto nla_put_failure;
3791
3792 nla_nest_end(req->msg, nest);
3793
3794 return 0;
3795
3796nla_put_failure:
3797 nla_nest_cancel(req->msg, nest);
3798 return err;
3799}
3800
3801int devlink_info_version_fixed_put(struct devlink_info_req *req,
3802 const char *version_name,
3803 const char *version_value)
3804{
3805 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
3806 version_name, version_value);
3807}
3808EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
3809
3810int devlink_info_version_stored_put(struct devlink_info_req *req,
3811 const char *version_name,
3812 const char *version_value)
3813{
3814 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
3815 version_name, version_value);
3816}
3817EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
3818
3819int devlink_info_version_running_put(struct devlink_info_req *req,
3820 const char *version_name,
3821 const char *version_value)
3822{
3823 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
3824 version_name, version_value);
3825}
3826EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
3827
Jakub Kicinskif9cf2282019-01-31 10:50:40 -08003828static int
3829devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
3830 enum devlink_command cmd, u32 portid,
3831 u32 seq, int flags, struct netlink_ext_ack *extack)
3832{
3833 struct devlink_info_req req;
3834 void *hdr;
3835 int err;
3836
3837 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3838 if (!hdr)
3839 return -EMSGSIZE;
3840
3841 err = -EMSGSIZE;
3842 if (devlink_nl_put_handle(msg, devlink))
3843 goto err_cancel_msg;
3844
3845 req.msg = msg;
3846 err = devlink->ops->info_get(devlink, &req, extack);
3847 if (err)
3848 goto err_cancel_msg;
3849
3850 genlmsg_end(msg, hdr);
3851 return 0;
3852
3853err_cancel_msg:
3854 genlmsg_cancel(msg, hdr);
3855 return err;
3856}
3857
3858static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
3859 struct genl_info *info)
3860{
3861 struct devlink *devlink = info->user_ptr[0];
3862 struct sk_buff *msg;
3863 int err;
3864
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08003865 if (!devlink->ops->info_get)
Jakub Kicinskif9cf2282019-01-31 10:50:40 -08003866 return -EOPNOTSUPP;
3867
3868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3869 if (!msg)
3870 return -ENOMEM;
3871
3872 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
3873 info->snd_portid, info->snd_seq, 0,
3874 info->extack);
3875 if (err) {
3876 nlmsg_free(msg);
3877 return err;
3878 }
3879
3880 return genlmsg_reply(msg, info);
3881}
3882
3883static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
3884 struct netlink_callback *cb)
3885{
3886 struct devlink *devlink;
3887 int start = cb->args[0];
3888 int idx = 0;
3889 int err;
3890
3891 mutex_lock(&devlink_mutex);
3892 list_for_each_entry(devlink, &devlink_list, list) {
3893 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3894 continue;
3895 if (idx < start) {
3896 idx++;
3897 continue;
3898 }
3899
3900 mutex_lock(&devlink->lock);
3901 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
3902 NETLINK_CB(cb->skb).portid,
3903 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3904 cb->extack);
3905 mutex_unlock(&devlink->lock);
3906 if (err)
3907 break;
3908 idx++;
3909 }
3910 mutex_unlock(&devlink_mutex);
3911
3912 cb->args[0] = idx;
3913 return msg->len;
3914}
3915
Eran Ben Elisha1db64e82019-02-07 11:36:32 +02003916struct devlink_fmsg_item {
3917 struct list_head list;
3918 int attrtype;
3919 u8 nla_type;
3920 u16 len;
3921 int value[0];
3922};
3923
3924struct devlink_fmsg {
3925 struct list_head item_list;
3926};
3927
3928static struct devlink_fmsg *devlink_fmsg_alloc(void)
3929{
3930 struct devlink_fmsg *fmsg;
3931
3932 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
3933 if (!fmsg)
3934 return NULL;
3935
3936 INIT_LIST_HEAD(&fmsg->item_list);
3937
3938 return fmsg;
3939}
3940
3941static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
3942{
3943 struct devlink_fmsg_item *item, *tmp;
3944
3945 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
3946 list_del(&item->list);
3947 kfree(item);
3948 }
3949 kfree(fmsg);
3950}
3951
3952static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
3953 int attrtype)
3954{
3955 struct devlink_fmsg_item *item;
3956
3957 item = kzalloc(sizeof(*item), GFP_KERNEL);
3958 if (!item)
3959 return -ENOMEM;
3960
3961 item->attrtype = attrtype;
3962 list_add_tail(&item->list, &fmsg->item_list);
3963
3964 return 0;
3965}
3966
3967int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
3968{
3969 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
3970}
3971EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
3972
3973static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
3974{
3975 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
3976}
3977
3978int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
3979{
3980 return devlink_fmsg_nest_end(fmsg);
3981}
3982EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
3983
3984#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
3985
3986static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
3987{
3988 struct devlink_fmsg_item *item;
3989
3990 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
3991 return -EMSGSIZE;
3992
3993 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
3994 if (!item)
3995 return -ENOMEM;
3996
3997 item->nla_type = NLA_NUL_STRING;
3998 item->len = strlen(name) + 1;
3999 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4000 memcpy(&item->value, name, item->len);
4001 list_add_tail(&item->list, &fmsg->item_list);
4002
4003 return 0;
4004}
4005
4006int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4007{
4008 int err;
4009
4010 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4011 if (err)
4012 return err;
4013
4014 err = devlink_fmsg_put_name(fmsg, name);
4015 if (err)
4016 return err;
4017
4018 return 0;
4019}
4020EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4021
4022int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4023{
4024 return devlink_fmsg_nest_end(fmsg);
4025}
4026EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4027
4028int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4029 const char *name)
4030{
4031 int err;
4032
4033 err = devlink_fmsg_pair_nest_start(fmsg, name);
4034 if (err)
4035 return err;
4036
4037 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4038 if (err)
4039 return err;
4040
4041 return 0;
4042}
4043EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4044
4045int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4046{
4047 int err;
4048
4049 err = devlink_fmsg_nest_end(fmsg);
4050 if (err)
4051 return err;
4052
4053 err = devlink_fmsg_nest_end(fmsg);
4054 if (err)
4055 return err;
4056
4057 return 0;
4058}
4059EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4060
4061static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4062 const void *value, u16 value_len,
4063 u8 value_nla_type)
4064{
4065 struct devlink_fmsg_item *item;
4066
4067 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4068 return -EMSGSIZE;
4069
4070 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4071 if (!item)
4072 return -ENOMEM;
4073
4074 item->nla_type = value_nla_type;
4075 item->len = value_len;
4076 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4077 memcpy(&item->value, value, item->len);
4078 list_add_tail(&item->list, &fmsg->item_list);
4079
4080 return 0;
4081}
4082
4083int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4084{
4085 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4086}
4087EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4088
4089int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4090{
4091 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4092}
4093EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4094
4095int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4096{
4097 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4098}
4099EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4100
4101int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4102{
4103 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4104}
4105EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4106
4107int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4108{
4109 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4110 NLA_NUL_STRING);
4111}
4112EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4113
4114int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4115 u16 value_len)
4116{
4117 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4118}
4119EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
4120
4121int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4122 bool value)
4123{
4124 int err;
4125
4126 err = devlink_fmsg_pair_nest_start(fmsg, name);
4127 if (err)
4128 return err;
4129
4130 err = devlink_fmsg_bool_put(fmsg, value);
4131 if (err)
4132 return err;
4133
4134 err = devlink_fmsg_pair_nest_end(fmsg);
4135 if (err)
4136 return err;
4137
4138 return 0;
4139}
4140EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4141
4142int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4143 u8 value)
4144{
4145 int err;
4146
4147 err = devlink_fmsg_pair_nest_start(fmsg, name);
4148 if (err)
4149 return err;
4150
4151 err = devlink_fmsg_u8_put(fmsg, value);
4152 if (err)
4153 return err;
4154
4155 err = devlink_fmsg_pair_nest_end(fmsg);
4156 if (err)
4157 return err;
4158
4159 return 0;
4160}
4161EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4162
4163int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4164 u32 value)
4165{
4166 int err;
4167
4168 err = devlink_fmsg_pair_nest_start(fmsg, name);
4169 if (err)
4170 return err;
4171
4172 err = devlink_fmsg_u32_put(fmsg, value);
4173 if (err)
4174 return err;
4175
4176 err = devlink_fmsg_pair_nest_end(fmsg);
4177 if (err)
4178 return err;
4179
4180 return 0;
4181}
4182EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4183
4184int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4185 u64 value)
4186{
4187 int err;
4188
4189 err = devlink_fmsg_pair_nest_start(fmsg, name);
4190 if (err)
4191 return err;
4192
4193 err = devlink_fmsg_u64_put(fmsg, value);
4194 if (err)
4195 return err;
4196
4197 err = devlink_fmsg_pair_nest_end(fmsg);
4198 if (err)
4199 return err;
4200
4201 return 0;
4202}
4203EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4204
4205int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4206 const char *value)
4207{
4208 int err;
4209
4210 err = devlink_fmsg_pair_nest_start(fmsg, name);
4211 if (err)
4212 return err;
4213
4214 err = devlink_fmsg_string_put(fmsg, value);
4215 if (err)
4216 return err;
4217
4218 err = devlink_fmsg_pair_nest_end(fmsg);
4219 if (err)
4220 return err;
4221
4222 return 0;
4223}
4224EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4225
4226int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
4227 const void *value, u16 value_len)
4228{
4229 int err;
4230
4231 err = devlink_fmsg_pair_nest_start(fmsg, name);
4232 if (err)
4233 return err;
4234
4235 err = devlink_fmsg_binary_put(fmsg, value, value_len);
4236 if (err)
4237 return err;
4238
4239 err = devlink_fmsg_pair_nest_end(fmsg);
4240 if (err)
4241 return err;
4242
4243 return 0;
4244}
4245EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4246
4247static int
4248devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4249{
4250 switch (msg->nla_type) {
4251 case NLA_FLAG:
4252 case NLA_U8:
4253 case NLA_U32:
4254 case NLA_U64:
4255 case NLA_NUL_STRING:
4256 case NLA_BINARY:
4257 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4258 msg->nla_type);
4259 default:
4260 return -EINVAL;
4261 }
4262}
4263
4264static int
4265devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4266{
4267 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4268 u8 tmp;
4269
4270 switch (msg->nla_type) {
4271 case NLA_FLAG:
4272 /* Always provide flag data, regardless of its value */
4273 tmp = *(bool *) msg->value;
4274
4275 return nla_put_u8(skb, attrtype, tmp);
4276 case NLA_U8:
4277 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4278 case NLA_U32:
4279 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4280 case NLA_U64:
4281 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4282 DEVLINK_ATTR_PAD);
4283 case NLA_NUL_STRING:
4284 return nla_put_string(skb, attrtype, (char *) &msg->value);
4285 case NLA_BINARY:
4286 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4287 default:
4288 return -EINVAL;
4289 }
4290}
4291
4292static int
4293devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4294 int *start)
4295{
4296 struct devlink_fmsg_item *item;
4297 struct nlattr *fmsg_nlattr;
4298 int i = 0;
4299 int err;
4300
4301 fmsg_nlattr = nla_nest_start(skb, DEVLINK_ATTR_FMSG);
4302 if (!fmsg_nlattr)
4303 return -EMSGSIZE;
4304
4305 list_for_each_entry(item, &fmsg->item_list, list) {
4306 if (i < *start) {
4307 i++;
4308 continue;
4309 }
4310
4311 switch (item->attrtype) {
4312 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4313 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4314 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4315 case DEVLINK_ATTR_FMSG_NEST_END:
4316 err = nla_put_flag(skb, item->attrtype);
4317 break;
4318 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4319 err = devlink_fmsg_item_fill_type(item, skb);
4320 if (err)
4321 break;
4322 err = devlink_fmsg_item_fill_data(item, skb);
4323 break;
4324 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4325 err = nla_put_string(skb, item->attrtype,
4326 (char *) &item->value);
4327 break;
4328 default:
4329 err = -EINVAL;
4330 break;
4331 }
4332 if (!err)
4333 *start = ++i;
4334 else
4335 break;
4336 }
4337
4338 nla_nest_end(skb, fmsg_nlattr);
4339 return err;
4340}
4341
4342static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4343 struct genl_info *info,
4344 enum devlink_command cmd, int flags)
4345{
4346 struct nlmsghdr *nlh;
4347 struct sk_buff *skb;
4348 bool last = false;
4349 int index = 0;
4350 void *hdr;
4351 int err;
4352
4353 while (!last) {
4354 int tmp_index = index;
4355
4356 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4357 if (!skb)
4358 return -ENOMEM;
4359
4360 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4361 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4362 if (!hdr) {
4363 err = -EMSGSIZE;
4364 goto nla_put_failure;
4365 }
4366
4367 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4368 if (!err)
4369 last = true;
4370 else if (err != -EMSGSIZE || tmp_index == index)
4371 goto nla_put_failure;
4372
4373 genlmsg_end(skb, hdr);
4374 err = genlmsg_reply(skb, info);
4375 if (err)
4376 return err;
4377 }
4378
4379 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4380 if (!skb)
4381 return -ENOMEM;
4382 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4383 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4384 if (!nlh) {
4385 err = -EMSGSIZE;
4386 goto nla_put_failure;
4387 }
Eran Ben Elisha1db64e82019-02-07 11:36:32 +02004388
Li RongQingfde55ea2019-02-11 19:09:07 +08004389 return genlmsg_reply(skb, info);
Eran Ben Elisha1db64e82019-02-07 11:36:32 +02004390
4391nla_put_failure:
4392 nlmsg_free(skb);
4393 return err;
4394}
4395
Eran Ben Elishaa0bdcc52019-02-07 11:36:33 +02004396struct devlink_health_reporter {
4397 struct list_head list;
4398 void *priv;
4399 const struct devlink_health_reporter_ops *ops;
4400 struct devlink *devlink;
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004401 struct devlink_fmsg *dump_fmsg;
4402 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
Eran Ben Elishaa0bdcc52019-02-07 11:36:33 +02004403 u64 graceful_period;
4404 bool auto_recover;
4405 u8 health_state;
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004406 u64 dump_ts;
4407 u64 error_count;
4408 u64 recovery_count;
4409 u64 last_recovery_ts;
4410};
4411
Eran Ben Elishaa0bdcc52019-02-07 11:36:33 +02004412void *
4413devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4414{
4415 return reporter->priv;
4416}
4417EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4418
4419static struct devlink_health_reporter *
4420devlink_health_reporter_find_by_name(struct devlink *devlink,
4421 const char *reporter_name)
4422{
4423 struct devlink_health_reporter *reporter;
4424
4425 list_for_each_entry(reporter, &devlink->reporter_list, list)
4426 if (!strcmp(reporter->ops->name, reporter_name))
4427 return reporter;
4428 return NULL;
4429}
4430
4431/**
4432 * devlink_health_reporter_create - create devlink health reporter
4433 *
4434 * @devlink: devlink
4435 * @ops: ops
4436 * @graceful_period: to avoid recovery loops, in msecs
4437 * @auto_recover: auto recover when error occurs
4438 * @priv: priv
4439 */
4440struct devlink_health_reporter *
4441devlink_health_reporter_create(struct devlink *devlink,
4442 const struct devlink_health_reporter_ops *ops,
4443 u64 graceful_period, bool auto_recover,
4444 void *priv)
4445{
4446 struct devlink_health_reporter *reporter;
4447
4448 mutex_lock(&devlink->lock);
4449 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4450 reporter = ERR_PTR(-EEXIST);
4451 goto unlock;
4452 }
4453
4454 if (WARN_ON(auto_recover && !ops->recover) ||
4455 WARN_ON(graceful_period && !ops->recover)) {
4456 reporter = ERR_PTR(-EINVAL);
4457 goto unlock;
4458 }
4459
4460 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4461 if (!reporter) {
4462 reporter = ERR_PTR(-ENOMEM);
4463 goto unlock;
4464 }
4465
4466 reporter->priv = priv;
4467 reporter->ops = ops;
4468 reporter->devlink = devlink;
4469 reporter->graceful_period = graceful_period;
4470 reporter->auto_recover = auto_recover;
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004471 mutex_init(&reporter->dump_lock);
Eran Ben Elishaa0bdcc52019-02-07 11:36:33 +02004472 list_add_tail(&reporter->list, &devlink->reporter_list);
4473unlock:
4474 mutex_unlock(&devlink->lock);
4475 return reporter;
4476}
4477EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4478
4479/**
4480 * devlink_health_reporter_destroy - destroy devlink health reporter
4481 *
4482 * @reporter: devlink health reporter to destroy
4483 */
4484void
4485devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4486{
4487 mutex_lock(&reporter->devlink->lock);
4488 list_del(&reporter->list);
4489 mutex_unlock(&reporter->devlink->lock);
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004490 if (reporter->dump_fmsg)
4491 devlink_fmsg_free(reporter->dump_fmsg);
Eran Ben Elishaa0bdcc52019-02-07 11:36:33 +02004492 kfree(reporter);
4493}
4494EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4495
Eran Ben Elisha3167b272019-03-03 10:57:30 +02004496void
4497devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
4498 enum devlink_health_reporter_state state)
4499{
4500 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
4501 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
4502 return;
4503
4504 if (reporter->health_state == state)
4505 return;
4506
4507 reporter->health_state = state;
4508 trace_devlink_health_reporter_state_update(reporter->devlink,
4509 reporter->ops->name, state);
4510}
4511EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
4512
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004513static int
4514devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
4515 void *priv_ctx)
4516{
4517 int err;
4518
4519 if (!reporter->ops->recover)
4520 return -EOPNOTSUPP;
4521
4522 err = reporter->ops->recover(reporter, priv_ctx);
4523 if (err)
4524 return err;
4525
4526 reporter->recovery_count++;
4527 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
4528 reporter->last_recovery_ts = jiffies;
4529
4530 return 0;
4531}
4532
4533static void
4534devlink_health_dump_clear(struct devlink_health_reporter *reporter)
4535{
4536 if (!reporter->dump_fmsg)
4537 return;
4538 devlink_fmsg_free(reporter->dump_fmsg);
4539 reporter->dump_fmsg = NULL;
4540}
4541
4542static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
4543 void *priv_ctx)
4544{
4545 int err;
4546
4547 if (!reporter->ops->dump)
4548 return 0;
4549
4550 if (reporter->dump_fmsg)
4551 return 0;
4552
4553 reporter->dump_fmsg = devlink_fmsg_alloc();
4554 if (!reporter->dump_fmsg) {
4555 err = -ENOMEM;
4556 return err;
4557 }
4558
4559 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
4560 if (err)
4561 goto dump_err;
4562
4563 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
4564 priv_ctx);
4565 if (err)
4566 goto dump_err;
4567
4568 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
4569 if (err)
4570 goto dump_err;
4571
4572 reporter->dump_ts = jiffies;
4573
4574 return 0;
4575
4576dump_err:
4577 devlink_health_dump_clear(reporter);
4578 return err;
4579}
4580
4581int devlink_health_report(struct devlink_health_reporter *reporter,
4582 const char *msg, void *priv_ctx)
4583{
Eran Ben Elishaa0a21ad2019-03-03 10:57:29 +02004584 enum devlink_health_reporter_state prev_health_state;
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004585 struct devlink *devlink = reporter->devlink;
4586
4587 /* write a log message of the current error */
4588 WARN_ON(!msg);
4589 trace_devlink_health_report(devlink, reporter->ops->name, msg);
4590 reporter->error_count++;
Eran Ben Elishaa0a21ad2019-03-03 10:57:29 +02004591 prev_health_state = reporter->health_state;
4592 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004593
4594 /* abort if the previous error wasn't recovered */
4595 if (reporter->auto_recover &&
Eran Ben Elishaa0a21ad2019-03-03 10:57:29 +02004596 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
Eran Ben Elishac8e1da02019-02-07 11:36:34 +02004597 jiffies - reporter->last_recovery_ts <
4598 msecs_to_jiffies(reporter->graceful_period))) {
4599 trace_devlink_health_recover_aborted(devlink,
4600 reporter->ops->name,
4601 reporter->health_state,
4602 jiffies -
4603 reporter->last_recovery_ts);
4604 return -ECANCELED;
4605 }
4606
4607 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
4608
4609 mutex_lock(&reporter->dump_lock);
4610 /* store current dump of current error, for later analysis */
4611 devlink_health_do_dump(reporter, priv_ctx);
4612 mutex_unlock(&reporter->dump_lock);
4613
4614 if (reporter->auto_recover)
4615 return devlink_health_reporter_recover(reporter, priv_ctx);
4616
4617 return 0;
4618}
4619EXPORT_SYMBOL_GPL(devlink_health_report);
4620
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02004621static struct devlink_health_reporter *
4622devlink_health_reporter_get_from_info(struct devlink *devlink,
4623 struct genl_info *info)
4624{
4625 char *reporter_name;
4626
4627 if (!info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
4628 return NULL;
4629
4630 reporter_name =
4631 nla_data(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
4632 return devlink_health_reporter_find_by_name(devlink, reporter_name);
4633}
4634
4635static int
4636devlink_nl_health_reporter_fill(struct sk_buff *msg,
4637 struct devlink *devlink,
4638 struct devlink_health_reporter *reporter,
4639 enum devlink_command cmd, u32 portid,
4640 u32 seq, int flags)
4641{
4642 struct nlattr *reporter_attr;
4643 void *hdr;
4644
4645 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4646 if (!hdr)
4647 return -EMSGSIZE;
4648
4649 if (devlink_nl_put_handle(msg, devlink))
4650 goto genlmsg_cancel;
4651
4652 reporter_attr = nla_nest_start(msg, DEVLINK_ATTR_HEALTH_REPORTER);
4653 if (!reporter_attr)
4654 goto genlmsg_cancel;
4655 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
4656 reporter->ops->name))
4657 goto reporter_nest_cancel;
4658 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
4659 reporter->health_state))
4660 goto reporter_nest_cancel;
Aya Levin54719522019-02-21 14:12:01 +02004661 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02004662 reporter->error_count, DEVLINK_ATTR_PAD))
4663 goto reporter_nest_cancel;
Aya Levin54719522019-02-21 14:12:01 +02004664 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02004665 reporter->recovery_count, DEVLINK_ATTR_PAD))
4666 goto reporter_nest_cancel;
Aya Levin574b1e12019-02-21 14:12:02 +02004667 if (reporter->ops->recover &&
4668 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02004669 reporter->graceful_period,
4670 DEVLINK_ATTR_PAD))
4671 goto reporter_nest_cancel;
Aya Levin574b1e12019-02-21 14:12:02 +02004672 if (reporter->ops->recover &&
4673 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02004674 reporter->auto_recover))
4675 goto reporter_nest_cancel;
4676 if (reporter->dump_fmsg &&
4677 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
4678 jiffies_to_msecs(reporter->dump_ts),
4679 DEVLINK_ATTR_PAD))
4680 goto reporter_nest_cancel;
4681
4682 nla_nest_end(msg, reporter_attr);
4683 genlmsg_end(msg, hdr);
4684 return 0;
4685
4686reporter_nest_cancel:
4687 nla_nest_end(msg, reporter_attr);
4688genlmsg_cancel:
4689 genlmsg_cancel(msg, hdr);
4690 return -EMSGSIZE;
4691}
4692
4693static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
4694 struct genl_info *info)
4695{
4696 struct devlink *devlink = info->user_ptr[0];
4697 struct devlink_health_reporter *reporter;
4698 struct sk_buff *msg;
4699 int err;
4700
4701 reporter = devlink_health_reporter_get_from_info(devlink, info);
4702 if (!reporter)
4703 return -EINVAL;
4704
4705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4706 if (!msg)
4707 return -ENOMEM;
4708
4709 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
4710 DEVLINK_CMD_HEALTH_REPORTER_GET,
4711 info->snd_portid, info->snd_seq,
4712 0);
4713 if (err) {
4714 nlmsg_free(msg);
4715 return err;
4716 }
4717
4718 return genlmsg_reply(msg, info);
4719}
4720
4721static int
4722devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
4723 struct netlink_callback *cb)
4724{
4725 struct devlink_health_reporter *reporter;
4726 struct devlink *devlink;
4727 int start = cb->args[0];
4728 int idx = 0;
4729 int err;
4730
4731 mutex_lock(&devlink_mutex);
4732 list_for_each_entry(devlink, &devlink_list, list) {
4733 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4734 continue;
4735 mutex_lock(&devlink->lock);
4736 list_for_each_entry(reporter, &devlink->reporter_list,
4737 list) {
4738 if (idx < start) {
4739 idx++;
4740 continue;
4741 }
4742 err = devlink_nl_health_reporter_fill(msg, devlink,
4743 reporter,
4744 DEVLINK_CMD_HEALTH_REPORTER_GET,
4745 NETLINK_CB(cb->skb).portid,
4746 cb->nlh->nlmsg_seq,
4747 NLM_F_MULTI);
4748 if (err) {
4749 mutex_unlock(&devlink->lock);
4750 goto out;
4751 }
4752 idx++;
4753 }
4754 mutex_unlock(&devlink->lock);
4755 }
4756out:
4757 mutex_unlock(&devlink_mutex);
4758
4759 cb->args[0] = idx;
4760 return msg->len;
4761}
4762
Eran Ben Elishaa1e55ec2019-02-07 11:36:36 +02004763static int
4764devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
4765 struct genl_info *info)
4766{
4767 struct devlink *devlink = info->user_ptr[0];
4768 struct devlink_health_reporter *reporter;
4769
4770 reporter = devlink_health_reporter_get_from_info(devlink, info);
4771 if (!reporter)
4772 return -EINVAL;
4773
4774 if (!reporter->ops->recover &&
4775 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
4776 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]))
4777 return -EOPNOTSUPP;
4778
4779 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
4780 reporter->graceful_period =
4781 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
4782
4783 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
4784 reporter->auto_recover =
4785 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
4786
4787 return 0;
4788}
4789
Eran Ben Elisha20a09432019-02-07 11:36:37 +02004790static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
4791 struct genl_info *info)
4792{
4793 struct devlink *devlink = info->user_ptr[0];
4794 struct devlink_health_reporter *reporter;
4795
4796 reporter = devlink_health_reporter_get_from_info(devlink, info);
4797 if (!reporter)
4798 return -EINVAL;
4799
4800 return devlink_health_reporter_recover(reporter, NULL);
4801}
4802
Eran Ben Elishafca42a22019-02-07 11:36:38 +02004803static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
4804 struct genl_info *info)
4805{
4806 struct devlink *devlink = info->user_ptr[0];
4807 struct devlink_health_reporter *reporter;
4808 struct devlink_fmsg *fmsg;
4809 int err;
4810
4811 reporter = devlink_health_reporter_get_from_info(devlink, info);
4812 if (!reporter)
4813 return -EINVAL;
4814
4815 if (!reporter->ops->diagnose)
4816 return -EOPNOTSUPP;
4817
4818 fmsg = devlink_fmsg_alloc();
4819 if (!fmsg)
4820 return -ENOMEM;
4821
4822 err = devlink_fmsg_obj_nest_start(fmsg);
4823 if (err)
4824 goto out;
4825
4826 err = reporter->ops->diagnose(reporter, fmsg);
4827 if (err)
4828 goto out;
4829
4830 err = devlink_fmsg_obj_nest_end(fmsg);
4831 if (err)
4832 goto out;
4833
4834 err = devlink_fmsg_snd(fmsg, info,
4835 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
4836
4837out:
4838 devlink_fmsg_free(fmsg);
4839 return err;
4840}
4841
Eran Ben Elisha35455e22019-02-07 11:36:39 +02004842static int devlink_nl_cmd_health_reporter_dump_get_doit(struct sk_buff *skb,
4843 struct genl_info *info)
4844{
4845 struct devlink *devlink = info->user_ptr[0];
4846 struct devlink_health_reporter *reporter;
4847 int err;
4848
4849 reporter = devlink_health_reporter_get_from_info(devlink, info);
4850 if (!reporter)
4851 return -EINVAL;
4852
4853 if (!reporter->ops->dump)
4854 return -EOPNOTSUPP;
4855
4856 mutex_lock(&reporter->dump_lock);
4857 err = devlink_health_do_dump(reporter, NULL);
4858 if (err)
4859 goto out;
4860
4861 err = devlink_fmsg_snd(reporter->dump_fmsg, info,
4862 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, 0);
4863
4864out:
4865 mutex_unlock(&reporter->dump_lock);
4866 return err;
4867}
4868
4869static int
4870devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
4871 struct genl_info *info)
4872{
4873 struct devlink *devlink = info->user_ptr[0];
4874 struct devlink_health_reporter *reporter;
4875
4876 reporter = devlink_health_reporter_get_from_info(devlink, info);
4877 if (!reporter)
4878 return -EINVAL;
4879
4880 if (!reporter->ops->dump)
4881 return -EOPNOTSUPP;
4882
4883 mutex_lock(&reporter->dump_lock);
4884 devlink_health_dump_clear(reporter);
4885 mutex_unlock(&reporter->dump_lock);
4886 return 0;
4887}
4888
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01004889static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
4890 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
4891 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
4892 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
4893 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
4894 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
Jiri Pirkobf797472016-04-14 18:19:13 +02004895 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
4896 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
4897 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
4898 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
4899 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
4900 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
4901 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
Or Gerlitz08f4b592016-07-01 14:51:01 +03004902 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
Roi Dayan59bfde02016-11-22 23:09:57 +02004903 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
Roi Dayanf43e9b02016-09-25 13:52:44 +03004904 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02004905 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
4906 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01004907 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
4908 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03004909 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
4910 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
4911 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
Alex Veskerd8db7ea52018-07-12 15:13:11 +03004912 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
Alex Vesker866319b2018-07-12 15:13:13 +03004913 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02004914 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
Eran Ben Elishaa1e55ec2019-02-07 11:36:36 +02004915 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
4916 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
Jakub Kicinski76726cc2019-02-14 13:40:44 -08004917 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
4918 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01004919};
4920
4921static const struct genl_ops devlink_nl_ops[] = {
4922 {
4923 .cmd = DEVLINK_CMD_GET,
4924 .doit = devlink_nl_cmd_get_doit,
4925 .dumpit = devlink_nl_cmd_get_dumpit,
4926 .policy = devlink_nl_policy,
Jiri Pirko1fc2257e2016-04-08 19:12:48 +02004927 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01004928 /* can be retrieved by unprivileged users */
4929 },
4930 {
4931 .cmd = DEVLINK_CMD_PORT_GET,
4932 .doit = devlink_nl_cmd_port_get_doit,
4933 .dumpit = devlink_nl_cmd_port_get_dumpit,
4934 .policy = devlink_nl_policy,
4935 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
4936 /* can be retrieved by unprivileged users */
4937 },
4938 {
4939 .cmd = DEVLINK_CMD_PORT_SET,
4940 .doit = devlink_nl_cmd_port_set_doit,
4941 .policy = devlink_nl_policy,
4942 .flags = GENL_ADMIN_PERM,
4943 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
4944 },
4945 {
4946 .cmd = DEVLINK_CMD_PORT_SPLIT,
4947 .doit = devlink_nl_cmd_port_split_doit,
4948 .policy = devlink_nl_policy,
4949 .flags = GENL_ADMIN_PERM,
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01004950 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4951 DEVLINK_NL_FLAG_NO_LOCK,
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01004952 },
4953 {
4954 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
4955 .doit = devlink_nl_cmd_port_unsplit_doit,
4956 .policy = devlink_nl_policy,
4957 .flags = GENL_ADMIN_PERM,
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01004958 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4959 DEVLINK_NL_FLAG_NO_LOCK,
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01004960 },
Jiri Pirkobf797472016-04-14 18:19:13 +02004961 {
4962 .cmd = DEVLINK_CMD_SB_GET,
4963 .doit = devlink_nl_cmd_sb_get_doit,
4964 .dumpit = devlink_nl_cmd_sb_get_dumpit,
4965 .policy = devlink_nl_policy,
4966 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4967 DEVLINK_NL_FLAG_NEED_SB,
4968 /* can be retrieved by unprivileged users */
4969 },
4970 {
4971 .cmd = DEVLINK_CMD_SB_POOL_GET,
4972 .doit = devlink_nl_cmd_sb_pool_get_doit,
4973 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
4974 .policy = devlink_nl_policy,
4975 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4976 DEVLINK_NL_FLAG_NEED_SB,
4977 /* can be retrieved by unprivileged users */
4978 },
4979 {
4980 .cmd = DEVLINK_CMD_SB_POOL_SET,
4981 .doit = devlink_nl_cmd_sb_pool_set_doit,
4982 .policy = devlink_nl_policy,
4983 .flags = GENL_ADMIN_PERM,
4984 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4985 DEVLINK_NL_FLAG_NEED_SB,
4986 },
4987 {
4988 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
4989 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
4990 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
4991 .policy = devlink_nl_policy,
4992 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
4993 DEVLINK_NL_FLAG_NEED_SB,
4994 /* can be retrieved by unprivileged users */
4995 },
4996 {
4997 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
4998 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
4999 .policy = devlink_nl_policy,
5000 .flags = GENL_ADMIN_PERM,
5001 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
5002 DEVLINK_NL_FLAG_NEED_SB,
5003 },
5004 {
5005 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
5006 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
5007 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
5008 .policy = devlink_nl_policy,
5009 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
5010 DEVLINK_NL_FLAG_NEED_SB,
5011 /* can be retrieved by unprivileged users */
5012 },
5013 {
5014 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
5015 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
5016 .policy = devlink_nl_policy,
5017 .flags = GENL_ADMIN_PERM,
5018 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
5019 DEVLINK_NL_FLAG_NEED_SB,
5020 },
Jiri Pirkodf38daf2016-04-14 18:19:14 +02005021 {
5022 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
5023 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
5024 .policy = devlink_nl_policy,
5025 .flags = GENL_ADMIN_PERM,
5026 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005027 DEVLINK_NL_FLAG_NEED_SB,
Jiri Pirkodf38daf2016-04-14 18:19:14 +02005028 },
5029 {
5030 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
5031 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
5032 .policy = devlink_nl_policy,
5033 .flags = GENL_ADMIN_PERM,
5034 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005035 DEVLINK_NL_FLAG_NEED_SB,
Jiri Pirkodf38daf2016-04-14 18:19:14 +02005036 },
Or Gerlitz08f4b592016-07-01 14:51:01 +03005037 {
Jiri Pirkoadf200f2017-02-09 15:54:33 +01005038 .cmd = DEVLINK_CMD_ESWITCH_GET,
5039 .doit = devlink_nl_cmd_eswitch_get_doit,
Or Gerlitz08f4b592016-07-01 14:51:01 +03005040 .policy = devlink_nl_policy,
5041 .flags = GENL_ADMIN_PERM,
5042 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5043 },
5044 {
Jiri Pirkoadf200f2017-02-09 15:54:33 +01005045 .cmd = DEVLINK_CMD_ESWITCH_SET,
5046 .doit = devlink_nl_cmd_eswitch_set_doit,
Or Gerlitz08f4b592016-07-01 14:51:01 +03005047 .policy = devlink_nl_policy,
5048 .flags = GENL_ADMIN_PERM,
Jakub Kicinski7ac1cc92018-05-21 22:12:50 -07005049 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5050 DEVLINK_NL_FLAG_NO_LOCK,
Or Gerlitz08f4b592016-07-01 14:51:01 +03005051 },
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005052 {
5053 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
5054 .doit = devlink_nl_cmd_dpipe_table_get,
5055 .policy = devlink_nl_policy,
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005056 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
Arkadi Sharshevsky67ae6862018-03-08 12:52:25 +02005057 /* can be retrieved by unprivileged users */
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005058 },
5059 {
5060 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
5061 .doit = devlink_nl_cmd_dpipe_entries_get,
5062 .policy = devlink_nl_policy,
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005063 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
Arkadi Sharshevsky67ae6862018-03-08 12:52:25 +02005064 /* can be retrieved by unprivileged users */
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005065 },
5066 {
5067 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
5068 .doit = devlink_nl_cmd_dpipe_headers_get,
5069 .policy = devlink_nl_policy,
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005070 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
Arkadi Sharshevsky67ae6862018-03-08 12:52:25 +02005071 /* can be retrieved by unprivileged users */
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005072 },
5073 {
5074 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
5075 .doit = devlink_nl_cmd_dpipe_table_counters_set,
5076 .policy = devlink_nl_policy,
5077 .flags = GENL_ADMIN_PERM,
5078 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5079 },
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005080 {
5081 .cmd = DEVLINK_CMD_RESOURCE_SET,
5082 .doit = devlink_nl_cmd_resource_set,
5083 .policy = devlink_nl_policy,
5084 .flags = GENL_ADMIN_PERM,
5085 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5086 },
5087 {
5088 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
5089 .doit = devlink_nl_cmd_resource_dump,
5090 .policy = devlink_nl_policy,
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005091 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
Arkadi Sharshevsky67ae6862018-03-08 12:52:25 +02005092 /* can be retrieved by unprivileged users */
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005093 },
Arkadi Sharshevsky2d8dc5b2018-01-15 08:59:04 +01005094 {
5095 .cmd = DEVLINK_CMD_RELOAD,
5096 .doit = devlink_nl_cmd_reload,
5097 .policy = devlink_nl_policy,
5098 .flags = GENL_ADMIN_PERM,
5099 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5100 DEVLINK_NL_FLAG_NO_LOCK,
5101 },
Moshe Shemesh45f05de2018-07-04 14:30:29 +03005102 {
5103 .cmd = DEVLINK_CMD_PARAM_GET,
5104 .doit = devlink_nl_cmd_param_get_doit,
5105 .dumpit = devlink_nl_cmd_param_get_dumpit,
5106 .policy = devlink_nl_policy,
5107 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5108 /* can be retrieved by unprivileged users */
5109 },
Moshe Shemeshe3b7ca12018-07-04 14:30:30 +03005110 {
5111 .cmd = DEVLINK_CMD_PARAM_SET,
5112 .doit = devlink_nl_cmd_param_set_doit,
5113 .policy = devlink_nl_policy,
5114 .flags = GENL_ADMIN_PERM,
5115 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5116 },
Alex Veskerd8db7ea52018-07-12 15:13:11 +03005117 {
Vasundhara Volamf4601de2019-01-28 18:00:21 +05305118 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
5119 .doit = devlink_nl_cmd_port_param_get_doit,
5120 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
5121 .policy = devlink_nl_policy,
5122 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5123 /* can be retrieved by unprivileged users */
5124 },
5125 {
Vasundhara Volam9c548732019-01-28 18:00:22 +05305126 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
5127 .doit = devlink_nl_cmd_port_param_set_doit,
5128 .policy = devlink_nl_policy,
5129 .flags = GENL_ADMIN_PERM,
5130 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5131 },
5132 {
Alex Veskerd8db7ea52018-07-12 15:13:11 +03005133 .cmd = DEVLINK_CMD_REGION_GET,
5134 .doit = devlink_nl_cmd_region_get_doit,
5135 .dumpit = devlink_nl_cmd_region_get_dumpit,
5136 .policy = devlink_nl_policy,
5137 .flags = GENL_ADMIN_PERM,
5138 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5139 },
Alex Vesker866319b2018-07-12 15:13:13 +03005140 {
5141 .cmd = DEVLINK_CMD_REGION_DEL,
5142 .doit = devlink_nl_cmd_region_del,
5143 .policy = devlink_nl_policy,
5144 .flags = GENL_ADMIN_PERM,
5145 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5146 },
Alex Vesker4e547952018-07-12 15:13:14 +03005147 {
5148 .cmd = DEVLINK_CMD_REGION_READ,
5149 .dumpit = devlink_nl_cmd_region_read_dumpit,
5150 .policy = devlink_nl_policy,
5151 .flags = GENL_ADMIN_PERM,
5152 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5153 },
Jakub Kicinskif9cf2282019-01-31 10:50:40 -08005154 {
5155 .cmd = DEVLINK_CMD_INFO_GET,
5156 .doit = devlink_nl_cmd_info_get_doit,
5157 .dumpit = devlink_nl_cmd_info_get_dumpit,
5158 .policy = devlink_nl_policy,
5159 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5160 /* can be retrieved by unprivileged users */
5161 },
Eran Ben Elisha7afe335a2019-02-07 11:36:35 +02005162 {
5163 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
5164 .doit = devlink_nl_cmd_health_reporter_get_doit,
5165 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
5166 .policy = devlink_nl_policy,
5167 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5168 /* can be retrieved by unprivileged users */
5169 },
Eran Ben Elishaa1e55ec2019-02-07 11:36:36 +02005170 {
5171 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
5172 .doit = devlink_nl_cmd_health_reporter_set_doit,
5173 .policy = devlink_nl_policy,
5174 .flags = GENL_ADMIN_PERM,
5175 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5176 },
Eran Ben Elisha20a09432019-02-07 11:36:37 +02005177 {
5178 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
5179 .doit = devlink_nl_cmd_health_reporter_recover_doit,
5180 .policy = devlink_nl_policy,
5181 .flags = GENL_ADMIN_PERM,
5182 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5183 },
Eran Ben Elishafca42a22019-02-07 11:36:38 +02005184 {
5185 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
5186 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
5187 .policy = devlink_nl_policy,
5188 .flags = GENL_ADMIN_PERM,
5189 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5190 },
Eran Ben Elisha35455e22019-02-07 11:36:39 +02005191 {
5192 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
5193 .doit = devlink_nl_cmd_health_reporter_dump_get_doit,
5194 .policy = devlink_nl_policy,
5195 .flags = GENL_ADMIN_PERM,
5196 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5197 DEVLINK_NL_FLAG_NO_LOCK,
5198 },
5199 {
5200 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
5201 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
5202 .policy = devlink_nl_policy,
5203 .flags = GENL_ADMIN_PERM,
5204 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5205 DEVLINK_NL_FLAG_NO_LOCK,
5206 },
Jakub Kicinski76726cc2019-02-14 13:40:44 -08005207 {
5208 .cmd = DEVLINK_CMD_FLASH_UPDATE,
5209 .doit = devlink_nl_cmd_flash_update,
5210 .policy = devlink_nl_policy,
5211 .flags = GENL_ADMIN_PERM,
5212 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5213 },
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005214};
5215
Johannes Berg56989f62016-10-24 14:40:05 +02005216static struct genl_family devlink_nl_family __ro_after_init = {
Johannes Berg489111e2016-10-24 14:40:03 +02005217 .name = DEVLINK_GENL_NAME,
5218 .version = DEVLINK_GENL_VERSION,
5219 .maxattr = DEVLINK_ATTR_MAX,
5220 .netnsok = true,
5221 .pre_doit = devlink_nl_pre_doit,
5222 .post_doit = devlink_nl_post_doit,
5223 .module = THIS_MODULE,
5224 .ops = devlink_nl_ops,
5225 .n_ops = ARRAY_SIZE(devlink_nl_ops),
5226 .mcgrps = devlink_nl_mcgrps,
5227 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
5228};
5229
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005230/**
5231 * devlink_alloc - Allocate new devlink instance resources
5232 *
5233 * @ops: ops
5234 * @priv_size: size of user private data
5235 *
5236 * Allocate new devlink instance resources, including devlink index
5237 * and name.
5238 */
5239struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
5240{
5241 struct devlink *devlink;
5242
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08005243 if (WARN_ON(!ops))
5244 return NULL;
5245
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005246 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
5247 if (!devlink)
5248 return NULL;
5249 devlink->ops = ops;
5250 devlink_net_set(devlink, &init_net);
5251 INIT_LIST_HEAD(&devlink->port_list);
Jiri Pirkobf797472016-04-14 18:19:13 +02005252 INIT_LIST_HEAD(&devlink->sb_list);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005253 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005254 INIT_LIST_HEAD(&devlink->resource_list);
Moshe Shemesheabaef12018-07-04 14:30:28 +03005255 INIT_LIST_HEAD(&devlink->param_list);
Alex Veskerb16ebe92018-07-12 15:13:08 +03005256 INIT_LIST_HEAD(&devlink->region_list);
Eran Ben Elishaa0bdcc52019-02-07 11:36:33 +02005257 INIT_LIST_HEAD(&devlink->reporter_list);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005258 mutex_init(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005259 return devlink;
5260}
5261EXPORT_SYMBOL_GPL(devlink_alloc);
5262
5263/**
5264 * devlink_register - Register devlink instance
5265 *
5266 * @devlink: devlink
Jakub Kicinskieeaadd82019-02-27 11:36:36 -08005267 * @dev: parent device
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005268 */
5269int devlink_register(struct devlink *devlink, struct device *dev)
5270{
5271 mutex_lock(&devlink_mutex);
5272 devlink->dev = dev;
5273 list_add_tail(&devlink->list, &devlink_list);
5274 devlink_notify(devlink, DEVLINK_CMD_NEW);
5275 mutex_unlock(&devlink_mutex);
5276 return 0;
5277}
5278EXPORT_SYMBOL_GPL(devlink_register);
5279
5280/**
5281 * devlink_unregister - Unregister devlink instance
5282 *
5283 * @devlink: devlink
5284 */
5285void devlink_unregister(struct devlink *devlink)
5286{
5287 mutex_lock(&devlink_mutex);
5288 devlink_notify(devlink, DEVLINK_CMD_DEL);
5289 list_del(&devlink->list);
5290 mutex_unlock(&devlink_mutex);
5291}
5292EXPORT_SYMBOL_GPL(devlink_unregister);
5293
5294/**
5295 * devlink_free - Free devlink instance resources
5296 *
5297 * @devlink: devlink
5298 */
5299void devlink_free(struct devlink *devlink)
5300{
Parav Panditb904aad2019-02-08 15:15:00 -06005301 WARN_ON(!list_empty(&devlink->reporter_list));
5302 WARN_ON(!list_empty(&devlink->region_list));
5303 WARN_ON(!list_empty(&devlink->param_list));
5304 WARN_ON(!list_empty(&devlink->resource_list));
5305 WARN_ON(!list_empty(&devlink->dpipe_table_list));
5306 WARN_ON(!list_empty(&devlink->sb_list));
5307 WARN_ON(!list_empty(&devlink->port_list));
5308
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005309 kfree(devlink);
5310}
5311EXPORT_SYMBOL_GPL(devlink_free);
5312
5313/**
5314 * devlink_port_register - Register devlink port
5315 *
5316 * @devlink: devlink
5317 * @devlink_port: devlink port
Jakub Kicinskieeaadd82019-02-27 11:36:36 -08005318 * @port_index: driver-specific numerical identifier of the port
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005319 *
5320 * Register devlink port with provided port index. User can use
5321 * any indexing, even hw-related one. devlink_port structure
5322 * is convenient to be embedded inside user driver private structure.
5323 * Note that the caller should take care of zeroing the devlink_port
5324 * structure.
5325 */
5326int devlink_port_register(struct devlink *devlink,
5327 struct devlink_port *devlink_port,
5328 unsigned int port_index)
5329{
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005330 mutex_lock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005331 if (devlink_port_index_exists(devlink, port_index)) {
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005332 mutex_unlock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005333 return -EEXIST;
5334 }
5335 devlink_port->devlink = devlink;
5336 devlink_port->index = port_index;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005337 devlink_port->registered = true;
5338 list_add_tail(&devlink_port->list, &devlink->port_list);
Vasundhara Volam39e61602019-01-28 18:00:20 +05305339 INIT_LIST_HEAD(&devlink_port->param_list);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005340 mutex_unlock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005341 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
5342 return 0;
5343}
5344EXPORT_SYMBOL_GPL(devlink_port_register);
5345
5346/**
5347 * devlink_port_unregister - Unregister devlink port
5348 *
5349 * @devlink_port: devlink port
5350 */
5351void devlink_port_unregister(struct devlink_port *devlink_port)
5352{
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005353 struct devlink *devlink = devlink_port->devlink;
5354
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005355 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005356 mutex_lock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005357 list_del(&devlink_port->list);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005358 mutex_unlock(&devlink->lock);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005359}
5360EXPORT_SYMBOL_GPL(devlink_port_unregister);
5361
5362static void __devlink_port_type_set(struct devlink_port *devlink_port,
5363 enum devlink_port_type type,
5364 void *type_dev)
5365{
5366 devlink_port->type = type;
5367 devlink_port->type_dev = type_dev;
5368 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
5369}
5370
5371/**
5372 * devlink_port_type_eth_set - Set port type to Ethernet
5373 *
5374 * @devlink_port: devlink port
5375 * @netdev: related netdevice
5376 */
5377void devlink_port_type_eth_set(struct devlink_port *devlink_port,
5378 struct net_device *netdev)
5379{
5380 return __devlink_port_type_set(devlink_port,
5381 DEVLINK_PORT_TYPE_ETH, netdev);
5382}
5383EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
5384
5385/**
5386 * devlink_port_type_ib_set - Set port type to InfiniBand
5387 *
5388 * @devlink_port: devlink port
5389 * @ibdev: related IB device
5390 */
5391void devlink_port_type_ib_set(struct devlink_port *devlink_port,
5392 struct ib_device *ibdev)
5393{
5394 return __devlink_port_type_set(devlink_port,
5395 DEVLINK_PORT_TYPE_IB, ibdev);
5396}
5397EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
5398
5399/**
5400 * devlink_port_type_clear - Clear port type
5401 *
5402 * @devlink_port: devlink port
5403 */
5404void devlink_port_type_clear(struct devlink_port *devlink_port)
5405{
5406 return __devlink_port_type_set(devlink_port,
5407 DEVLINK_PORT_TYPE_NOTSET, NULL);
5408}
5409EXPORT_SYMBOL_GPL(devlink_port_type_clear);
5410
5411/**
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005412 * devlink_port_attrs_set - Set port attributes
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005413 *
5414 * @devlink_port: devlink port
Jiri Pirko5ec13802018-05-18 09:29:01 +02005415 * @flavour: flavour of the port
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005416 * @port_number: number of the port that is facing user, for example
5417 * the front panel port number
5418 * @split: indicates if this is split port
5419 * @split_subport_number: if the port is split, this is the number
5420 * of subport.
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005421 */
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005422void devlink_port_attrs_set(struct devlink_port *devlink_port,
Jiri Pirko5ec13802018-05-18 09:29:01 +02005423 enum devlink_port_flavour flavour,
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005424 u32 port_number, bool split,
5425 u32 split_subport_number)
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005426{
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005427 struct devlink_port_attrs *attrs = &devlink_port->attrs;
5428
5429 attrs->set = true;
Jiri Pirko5ec13802018-05-18 09:29:01 +02005430 attrs->flavour = flavour;
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005431 attrs->port_number = port_number;
5432 attrs->split = split;
5433 attrs->split_subport_number = split_subport_number;
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005434 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
5435}
Jiri Pirkob9ffcba2018-05-18 09:29:00 +02005436EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01005437
Jiri Pirko08474c12018-05-18 09:29:02 +02005438int devlink_port_get_phys_port_name(struct devlink_port *devlink_port,
5439 char *name, size_t len)
5440{
5441 struct devlink_port_attrs *attrs = &devlink_port->attrs;
5442 int n = 0;
5443
5444 if (!attrs->set)
5445 return -EOPNOTSUPP;
5446
5447 switch (attrs->flavour) {
5448 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
5449 if (!attrs->split)
5450 n = snprintf(name, len, "p%u", attrs->port_number);
5451 else
5452 n = snprintf(name, len, "p%us%u", attrs->port_number,
5453 attrs->split_subport_number);
5454 break;
5455 case DEVLINK_PORT_FLAVOUR_CPU:
5456 case DEVLINK_PORT_FLAVOUR_DSA:
5457 /* As CPU and DSA ports do not have a netdevice associated
5458 * case should not ever happen.
5459 */
5460 WARN_ON(1);
5461 return -EINVAL;
5462 }
5463
5464 if (n >= len)
5465 return -EINVAL;
5466
5467 return 0;
5468}
5469EXPORT_SYMBOL_GPL(devlink_port_get_phys_port_name);
5470
Jiri Pirkobf797472016-04-14 18:19:13 +02005471int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
5472 u32 size, u16 ingress_pools_count,
5473 u16 egress_pools_count, u16 ingress_tc_count,
5474 u16 egress_tc_count)
5475{
5476 struct devlink_sb *devlink_sb;
5477 int err = 0;
5478
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005479 mutex_lock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02005480 if (devlink_sb_index_exists(devlink, sb_index)) {
5481 err = -EEXIST;
5482 goto unlock;
5483 }
5484
5485 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
5486 if (!devlink_sb) {
5487 err = -ENOMEM;
5488 goto unlock;
5489 }
5490 devlink_sb->index = sb_index;
5491 devlink_sb->size = size;
5492 devlink_sb->ingress_pools_count = ingress_pools_count;
5493 devlink_sb->egress_pools_count = egress_pools_count;
5494 devlink_sb->ingress_tc_count = ingress_tc_count;
5495 devlink_sb->egress_tc_count = egress_tc_count;
5496 list_add_tail(&devlink_sb->list, &devlink->sb_list);
5497unlock:
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005498 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02005499 return err;
5500}
5501EXPORT_SYMBOL_GPL(devlink_sb_register);
5502
5503void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
5504{
5505 struct devlink_sb *devlink_sb;
5506
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005507 mutex_lock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02005508 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
5509 WARN_ON(!devlink_sb);
5510 list_del(&devlink_sb->list);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005511 mutex_unlock(&devlink->lock);
Jiri Pirkobf797472016-04-14 18:19:13 +02005512 kfree(devlink_sb);
5513}
5514EXPORT_SYMBOL_GPL(devlink_sb_unregister);
5515
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005516/**
5517 * devlink_dpipe_headers_register - register dpipe headers
5518 *
5519 * @devlink: devlink
5520 * @dpipe_headers: dpipe header array
5521 *
5522 * Register the headers supported by hardware.
5523 */
5524int devlink_dpipe_headers_register(struct devlink *devlink,
5525 struct devlink_dpipe_headers *dpipe_headers)
5526{
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005527 mutex_lock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005528 devlink->dpipe_headers = dpipe_headers;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005529 mutex_unlock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005530 return 0;
5531}
5532EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
5533
5534/**
5535 * devlink_dpipe_headers_unregister - unregister dpipe headers
5536 *
5537 * @devlink: devlink
5538 *
5539 * Unregister the headers supported by hardware.
5540 */
5541void devlink_dpipe_headers_unregister(struct devlink *devlink)
5542{
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005543 mutex_lock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005544 devlink->dpipe_headers = NULL;
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005545 mutex_unlock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005546}
5547EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
5548
5549/**
5550 * devlink_dpipe_table_counter_enabled - check if counter allocation
5551 * required
5552 * @devlink: devlink
5553 * @table_name: tables name
5554 *
5555 * Used by driver to check if counter allocation is required.
5556 * After counter allocation is turned on the table entries
5557 * are updated to include counter statistics.
5558 *
5559 * After that point on the driver must respect the counter
5560 * state so that each entry added to the table is added
5561 * with a counter.
5562 */
5563bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
5564 const char *table_name)
5565{
5566 struct devlink_dpipe_table *table;
5567 bool enabled;
5568
5569 rcu_read_lock();
5570 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
5571 table_name);
5572 enabled = false;
5573 if (table)
5574 enabled = table->counters_enabled;
5575 rcu_read_unlock();
5576 return enabled;
5577}
5578EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
5579
5580/**
5581 * devlink_dpipe_table_register - register dpipe table
5582 *
5583 * @devlink: devlink
5584 * @table_name: table name
5585 * @table_ops: table ops
5586 * @priv: priv
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005587 * @counter_control_extern: external control for counters
5588 */
5589int devlink_dpipe_table_register(struct devlink *devlink,
5590 const char *table_name,
5591 struct devlink_dpipe_table_ops *table_ops,
Arkadi Sharshevskyffd3cdc2017-08-24 08:40:02 +02005592 void *priv, bool counter_control_extern)
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005593{
5594 struct devlink_dpipe_table *table;
5595
5596 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
5597 return -EEXIST;
5598
Arkadi Sharshevskyffd3cdc2017-08-24 08:40:02 +02005599 if (WARN_ON(!table_ops->size_get))
5600 return -EINVAL;
5601
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005602 table = kzalloc(sizeof(*table), GFP_KERNEL);
5603 if (!table)
5604 return -ENOMEM;
5605
5606 table->name = table_name;
5607 table->table_ops = table_ops;
5608 table->priv = priv;
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005609 table->counter_control_extern = counter_control_extern;
5610
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005611 mutex_lock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005612 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005613 mutex_unlock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005614 return 0;
5615}
5616EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
5617
5618/**
5619 * devlink_dpipe_table_unregister - unregister dpipe table
5620 *
5621 * @devlink: devlink
5622 * @table_name: table name
5623 */
5624void devlink_dpipe_table_unregister(struct devlink *devlink,
5625 const char *table_name)
5626{
5627 struct devlink_dpipe_table *table;
5628
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005629 mutex_lock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005630 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
5631 table_name);
5632 if (!table)
5633 goto unlock;
5634 list_del_rcu(&table->list);
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005635 mutex_unlock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005636 kfree_rcu(table, rcu);
5637 return;
5638unlock:
Arkadi Sharshevsky2406e7e2018-01-15 08:59:02 +01005639 mutex_unlock(&devlink->lock);
Arkadi Sharshevsky1555d202017-03-28 17:24:10 +02005640}
5641EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
5642
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005643/**
5644 * devlink_resource_register - devlink resource register
5645 *
5646 * @devlink: devlink
5647 * @resource_name: resource's name
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005648 * @resource_size: resource's size
5649 * @resource_id: resource's id
Jakub Kicinskieeaadd82019-02-27 11:36:36 -08005650 * @parent_resource_id: resource's parent id
5651 * @size_params: size parameters
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005652 */
5653int devlink_resource_register(struct devlink *devlink,
5654 const char *resource_name,
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005655 u64 resource_size,
5656 u64 resource_id,
5657 u64 parent_resource_id,
Jiri Pirkofc56be42018-04-05 22:13:21 +02005658 const struct devlink_resource_size_params *size_params)
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005659{
5660 struct devlink_resource *resource;
5661 struct list_head *resource_list;
David Ahern14530742018-03-20 19:31:14 -07005662 bool top_hierarchy;
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005663 int err = 0;
5664
David Ahern14530742018-03-20 19:31:14 -07005665 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
5666
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005667 mutex_lock(&devlink->lock);
5668 resource = devlink_resource_find(devlink, NULL, resource_id);
5669 if (resource) {
5670 err = -EINVAL;
5671 goto out;
5672 }
5673
5674 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
5675 if (!resource) {
5676 err = -ENOMEM;
5677 goto out;
5678 }
5679
5680 if (top_hierarchy) {
5681 resource_list = &devlink->resource_list;
5682 } else {
5683 struct devlink_resource *parent_resource;
5684
5685 parent_resource = devlink_resource_find(devlink, NULL,
5686 parent_resource_id);
5687 if (parent_resource) {
5688 resource_list = &parent_resource->resource_list;
5689 resource->parent = parent_resource;
5690 } else {
Colin Ian Kingb75703d2018-01-22 10:31:19 +00005691 kfree(resource);
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005692 err = -EINVAL;
5693 goto out;
5694 }
5695 }
5696
5697 resource->name = resource_name;
5698 resource->size = resource_size;
5699 resource->size_new = resource_size;
5700 resource->id = resource_id;
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005701 resource->size_valid = true;
Jiri Pirko77d27092018-02-28 13:12:09 +01005702 memcpy(&resource->size_params, size_params,
5703 sizeof(resource->size_params));
Arkadi Sharshevskyd9f9b9a2018-01-15 08:59:03 +01005704 INIT_LIST_HEAD(&resource->resource_list);
5705 list_add_tail(&resource->list, resource_list);
5706out:
5707 mutex_unlock(&devlink->lock);
5708 return err;
5709}
5710EXPORT_SYMBOL_GPL(devlink_resource_register);
5711
5712/**
5713 * devlink_resources_unregister - free all resources
5714 *
5715 * @devlink: devlink
5716 * @resource: resource
5717 */
5718void devlink_resources_unregister(struct devlink *devlink,
5719 struct devlink_resource *resource)
5720{
5721 struct devlink_resource *tmp, *child_resource;
5722 struct list_head *resource_list;
5723
5724 if (resource)
5725 resource_list = &resource->resource_list;
5726 else
5727 resource_list = &devlink->resource_list;
5728
5729 if (!resource)
5730 mutex_lock(&devlink->lock);
5731
5732 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
5733 devlink_resources_unregister(devlink, child_resource);
5734 list_del(&child_resource->list);
5735 kfree(child_resource);
5736 }
5737
5738 if (!resource)
5739 mutex_unlock(&devlink->lock);
5740}
5741EXPORT_SYMBOL_GPL(devlink_resources_unregister);
5742
5743/**
5744 * devlink_resource_size_get - get and update size
5745 *
5746 * @devlink: devlink
5747 * @resource_id: the requested resource id
5748 * @p_resource_size: ptr to update
5749 */
5750int devlink_resource_size_get(struct devlink *devlink,
5751 u64 resource_id,
5752 u64 *p_resource_size)
5753{
5754 struct devlink_resource *resource;
5755 int err = 0;
5756
5757 mutex_lock(&devlink->lock);
5758 resource = devlink_resource_find(devlink, NULL, resource_id);
5759 if (!resource) {
5760 err = -EINVAL;
5761 goto out;
5762 }
5763 *p_resource_size = resource->size_new;
5764 resource->size = resource->size_new;
5765out:
5766 mutex_unlock(&devlink->lock);
5767 return err;
5768}
5769EXPORT_SYMBOL_GPL(devlink_resource_size_get);
5770
Arkadi Sharshevsky56dc7cd2018-01-15 08:59:05 +01005771/**
5772 * devlink_dpipe_table_resource_set - set the resource id
5773 *
5774 * @devlink: devlink
5775 * @table_name: table name
5776 * @resource_id: resource id
5777 * @resource_units: number of resource's units consumed per table's entry
5778 */
5779int devlink_dpipe_table_resource_set(struct devlink *devlink,
5780 const char *table_name, u64 resource_id,
5781 u64 resource_units)
5782{
5783 struct devlink_dpipe_table *table;
5784 int err = 0;
5785
5786 mutex_lock(&devlink->lock);
5787 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
5788 table_name);
5789 if (!table) {
5790 err = -EINVAL;
5791 goto out;
5792 }
5793 table->resource_id = resource_id;
5794 table->resource_units = resource_units;
5795 table->resource_valid = true;
5796out:
5797 mutex_unlock(&devlink->lock);
5798 return err;
5799}
5800EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
5801
Jiri Pirkofc56be42018-04-05 22:13:21 +02005802/**
5803 * devlink_resource_occ_get_register - register occupancy getter
5804 *
5805 * @devlink: devlink
5806 * @resource_id: resource id
5807 * @occ_get: occupancy getter callback
5808 * @occ_get_priv: occupancy getter callback priv
5809 */
5810void devlink_resource_occ_get_register(struct devlink *devlink,
5811 u64 resource_id,
5812 devlink_resource_occ_get_t *occ_get,
5813 void *occ_get_priv)
5814{
5815 struct devlink_resource *resource;
5816
5817 mutex_lock(&devlink->lock);
5818 resource = devlink_resource_find(devlink, NULL, resource_id);
5819 if (WARN_ON(!resource))
5820 goto out;
5821 WARN_ON(resource->occ_get);
5822
5823 resource->occ_get = occ_get;
5824 resource->occ_get_priv = occ_get_priv;
5825out:
5826 mutex_unlock(&devlink->lock);
5827}
5828EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
5829
5830/**
5831 * devlink_resource_occ_get_unregister - unregister occupancy getter
5832 *
5833 * @devlink: devlink
5834 * @resource_id: resource id
5835 */
5836void devlink_resource_occ_get_unregister(struct devlink *devlink,
5837 u64 resource_id)
5838{
5839 struct devlink_resource *resource;
5840
5841 mutex_lock(&devlink->lock);
5842 resource = devlink_resource_find(devlink, NULL, resource_id);
5843 if (WARN_ON(!resource))
5844 goto out;
5845 WARN_ON(!resource->occ_get);
5846
5847 resource->occ_get = NULL;
5848 resource->occ_get_priv = NULL;
5849out:
5850 mutex_unlock(&devlink->lock);
5851}
5852EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
5853
Vasundhara Volam39e61602019-01-28 18:00:20 +05305854static int devlink_param_verify(const struct devlink_param *param)
5855{
5856 if (!param || !param->name || !param->supported_cmodes)
5857 return -EINVAL;
5858 if (param->generic)
5859 return devlink_param_generic_verify(param);
5860 else
5861 return devlink_param_driver_verify(param);
5862}
5863
5864static int __devlink_params_register(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305865 unsigned int port_index,
Vasundhara Volam39e61602019-01-28 18:00:20 +05305866 struct list_head *param_list,
5867 const struct devlink_param *params,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305868 size_t params_count,
5869 enum devlink_command reg_cmd,
5870 enum devlink_command unreg_cmd)
Vasundhara Volam39e61602019-01-28 18:00:20 +05305871{
5872 const struct devlink_param *param = params;
5873 int i;
5874 int err;
5875
5876 mutex_lock(&devlink->lock);
5877 for (i = 0; i < params_count; i++, param++) {
5878 err = devlink_param_verify(param);
5879 if (err)
5880 goto rollback;
5881
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305882 err = devlink_param_register_one(devlink, port_index,
5883 param_list, param, reg_cmd);
Vasundhara Volam39e61602019-01-28 18:00:20 +05305884 if (err)
5885 goto rollback;
5886 }
5887
5888 mutex_unlock(&devlink->lock);
5889 return 0;
5890
5891rollback:
5892 if (!i)
5893 goto unlock;
5894 for (param--; i > 0; i--, param--)
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305895 devlink_param_unregister_one(devlink, port_index, param_list,
5896 param, unreg_cmd);
Vasundhara Volam39e61602019-01-28 18:00:20 +05305897unlock:
5898 mutex_unlock(&devlink->lock);
5899 return err;
5900}
5901
5902static void __devlink_params_unregister(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305903 unsigned int port_index,
Vasundhara Volam39e61602019-01-28 18:00:20 +05305904 struct list_head *param_list,
5905 const struct devlink_param *params,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305906 size_t params_count,
5907 enum devlink_command cmd)
Vasundhara Volam39e61602019-01-28 18:00:20 +05305908{
5909 const struct devlink_param *param = params;
5910 int i;
5911
5912 mutex_lock(&devlink->lock);
5913 for (i = 0; i < params_count; i++, param++)
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305914 devlink_param_unregister_one(devlink, 0, param_list, param,
5915 cmd);
Vasundhara Volam39e61602019-01-28 18:00:20 +05305916 mutex_unlock(&devlink->lock);
5917}
5918
Moshe Shemesheabaef12018-07-04 14:30:28 +03005919/**
5920 * devlink_params_register - register configuration parameters
5921 *
5922 * @devlink: devlink
5923 * @params: configuration parameters array
5924 * @params_count: number of parameters provided
5925 *
5926 * Register the configuration parameters supported by the driver.
5927 */
5928int devlink_params_register(struct devlink *devlink,
5929 const struct devlink_param *params,
5930 size_t params_count)
5931{
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305932 return __devlink_params_register(devlink, 0, &devlink->param_list,
5933 params, params_count,
5934 DEVLINK_CMD_PARAM_NEW,
5935 DEVLINK_CMD_PARAM_DEL);
Moshe Shemesheabaef12018-07-04 14:30:28 +03005936}
5937EXPORT_SYMBOL_GPL(devlink_params_register);
5938
5939/**
5940 * devlink_params_unregister - unregister configuration parameters
5941 * @devlink: devlink
5942 * @params: configuration parameters to unregister
5943 * @params_count: number of parameters provided
5944 */
5945void devlink_params_unregister(struct devlink *devlink,
5946 const struct devlink_param *params,
5947 size_t params_count)
5948{
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05305949 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
5950 params, params_count,
5951 DEVLINK_CMD_PARAM_DEL);
Moshe Shemesheabaef12018-07-04 14:30:28 +03005952}
5953EXPORT_SYMBOL_GPL(devlink_params_unregister);
5954
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03005955/**
Jiri Pirko7c62cfb2019-02-07 11:22:45 +00005956 * devlink_params_publish - publish configuration parameters
5957 *
5958 * @devlink: devlink
5959 *
5960 * Publish previously registered configuration parameters.
5961 */
5962void devlink_params_publish(struct devlink *devlink)
5963{
5964 struct devlink_param_item *param_item;
5965
5966 list_for_each_entry(param_item, &devlink->param_list, list) {
5967 if (param_item->published)
5968 continue;
5969 param_item->published = true;
5970 devlink_param_notify(devlink, 0, param_item,
5971 DEVLINK_CMD_PARAM_NEW);
5972 }
5973}
5974EXPORT_SYMBOL_GPL(devlink_params_publish);
5975
5976/**
5977 * devlink_params_unpublish - unpublish configuration parameters
5978 *
5979 * @devlink: devlink
5980 *
5981 * Unpublish previously registered configuration parameters.
5982 */
5983void devlink_params_unpublish(struct devlink *devlink)
5984{
5985 struct devlink_param_item *param_item;
5986
5987 list_for_each_entry(param_item, &devlink->param_list, list) {
5988 if (!param_item->published)
5989 continue;
5990 param_item->published = false;
5991 devlink_param_notify(devlink, 0, param_item,
5992 DEVLINK_CMD_PARAM_DEL);
5993 }
5994}
5995EXPORT_SYMBOL_GPL(devlink_params_unpublish);
5996
5997/**
Vasundhara Volam39e61602019-01-28 18:00:20 +05305998 * devlink_port_params_register - register port configuration parameters
5999 *
6000 * @devlink_port: devlink port
6001 * @params: configuration parameters array
6002 * @params_count: number of parameters provided
6003 *
6004 * Register the configuration parameters supported by the port.
6005 */
6006int devlink_port_params_register(struct devlink_port *devlink_port,
6007 const struct devlink_param *params,
6008 size_t params_count)
6009{
6010 return __devlink_params_register(devlink_port->devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306011 devlink_port->index,
Vasundhara Volam39e61602019-01-28 18:00:20 +05306012 &devlink_port->param_list, params,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306013 params_count,
6014 DEVLINK_CMD_PORT_PARAM_NEW,
6015 DEVLINK_CMD_PORT_PARAM_DEL);
Vasundhara Volam39e61602019-01-28 18:00:20 +05306016}
6017EXPORT_SYMBOL_GPL(devlink_port_params_register);
6018
6019/**
6020 * devlink_port_params_unregister - unregister port configuration
6021 * parameters
6022 *
6023 * @devlink_port: devlink port
6024 * @params: configuration parameters array
6025 * @params_count: number of parameters provided
6026 */
6027void devlink_port_params_unregister(struct devlink_port *devlink_port,
6028 const struct devlink_param *params,
6029 size_t params_count)
6030{
6031 return __devlink_params_unregister(devlink_port->devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306032 devlink_port->index,
Vasundhara Volam39e61602019-01-28 18:00:20 +05306033 &devlink_port->param_list,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306034 params, params_count,
6035 DEVLINK_CMD_PORT_PARAM_DEL);
Vasundhara Volam39e61602019-01-28 18:00:20 +05306036}
6037EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
6038
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306039static int
6040__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
6041 union devlink_param_value *init_val)
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03006042{
6043 struct devlink_param_item *param_item;
6044
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306045 param_item = devlink_param_find_by_id(param_list, param_id);
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03006046 if (!param_item)
6047 return -EINVAL;
6048
6049 if (!param_item->driverinit_value_valid ||
6050 !devlink_param_cmode_is_supported(param_item->param,
6051 DEVLINK_PARAM_CMODE_DRIVERINIT))
6052 return -EOPNOTSUPP;
6053
Moshe Shemesh12765342018-10-10 16:09:26 +03006054 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
6055 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
6056 else
6057 *init_val = param_item->driverinit_value;
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03006058
6059 return 0;
6060}
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306061
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306062static int
6063__devlink_param_driverinit_value_set(struct devlink *devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306064 unsigned int port_index,
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306065 struct list_head *param_list, u32 param_id,
6066 union devlink_param_value init_val,
6067 enum devlink_command cmd)
6068{
6069 struct devlink_param_item *param_item;
6070
6071 param_item = devlink_param_find_by_id(param_list, param_id);
6072 if (!param_item)
6073 return -EINVAL;
6074
6075 if (!devlink_param_cmode_is_supported(param_item->param,
6076 DEVLINK_PARAM_CMODE_DRIVERINIT))
6077 return -EOPNOTSUPP;
6078
6079 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
6080 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
6081 else
6082 param_item->driverinit_value = init_val;
6083 param_item->driverinit_value_valid = true;
6084
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306085 devlink_param_notify(devlink, port_index, param_item, cmd);
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306086 return 0;
6087}
6088
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306089/**
6090 * devlink_param_driverinit_value_get - get configuration parameter
6091 * value for driver initializing
6092 *
6093 * @devlink: devlink
6094 * @param_id: parameter ID
6095 * @init_val: value of parameter in driverinit configuration mode
6096 *
6097 * This function should be used by the driver to get driverinit
6098 * configuration for initialization after reload command.
6099 */
6100int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
6101 union devlink_param_value *init_val)
6102{
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08006103 if (!devlink->ops->reload)
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306104 return -EOPNOTSUPP;
6105
6106 return __devlink_param_driverinit_value_get(&devlink->param_list,
6107 param_id, init_val);
6108}
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03006109EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
6110
6111/**
6112 * devlink_param_driverinit_value_set - set value of configuration
6113 * parameter for driverinit
6114 * configuration mode
6115 *
6116 * @devlink: devlink
6117 * @param_id: parameter ID
6118 * @init_val: value of parameter to set for driverinit configuration mode
6119 *
6120 * This function should be used by the driver to set driverinit
6121 * configuration mode default value.
6122 */
6123int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
6124 union devlink_param_value init_val)
6125{
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306126 return __devlink_param_driverinit_value_set(devlink, 0,
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306127 &devlink->param_list,
6128 param_id, init_val,
6129 DEVLINK_CMD_PARAM_NEW);
Moshe Shemeshec01aeb2018-07-04 14:30:31 +03006130}
6131EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
6132
Moshe Shemeshea601e12018-07-04 14:30:32 +03006133/**
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306134 * devlink_port_param_driverinit_value_get - get configuration parameter
6135 * value for driver initializing
6136 *
6137 * @devlink_port: devlink_port
6138 * @param_id: parameter ID
6139 * @init_val: value of parameter in driverinit configuration mode
6140 *
6141 * This function should be used by the driver to get driverinit
6142 * configuration for initialization after reload command.
6143 */
6144int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
6145 u32 param_id,
6146 union devlink_param_value *init_val)
6147{
6148 struct devlink *devlink = devlink_port->devlink;
6149
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08006150 if (!devlink->ops->reload)
Vasundhara Volamffd19b92019-01-28 18:00:23 +05306151 return -EOPNOTSUPP;
6152
6153 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
6154 param_id, init_val);
6155}
6156EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
6157
6158/**
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306159 * devlink_port_param_driverinit_value_set - set value of configuration
6160 * parameter for driverinit
6161 * configuration mode
6162 *
6163 * @devlink_port: devlink_port
6164 * @param_id: parameter ID
6165 * @init_val: value of parameter to set for driverinit configuration mode
6166 *
6167 * This function should be used by the driver to set driverinit
6168 * configuration mode default value.
6169 */
6170int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
6171 u32 param_id,
6172 union devlink_param_value init_val)
6173{
6174 return __devlink_param_driverinit_value_set(devlink_port->devlink,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306175 devlink_port->index,
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306176 &devlink_port->param_list,
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306177 param_id, init_val,
6178 DEVLINK_CMD_PORT_PARAM_NEW);
Vasundhara Volam5473a7b2019-01-28 18:00:24 +05306179}
6180EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
6181
6182/**
Moshe Shemeshea601e12018-07-04 14:30:32 +03006183 * devlink_param_value_changed - notify devlink on a parameter's value
6184 * change. Should be called by the driver
6185 * right after the change.
6186 *
6187 * @devlink: devlink
6188 * @param_id: parameter ID
6189 *
6190 * This function should be used by the driver to notify devlink on value
6191 * change, excluding driverinit configuration mode.
6192 * For driverinit configuration mode driver should use the function
Moshe Shemeshea601e12018-07-04 14:30:32 +03006193 */
6194void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
6195{
6196 struct devlink_param_item *param_item;
6197
6198 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
6199 WARN_ON(!param_item);
6200
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306201 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
Moshe Shemeshea601e12018-07-04 14:30:32 +03006202}
6203EXPORT_SYMBOL_GPL(devlink_param_value_changed);
6204
Alex Veskerb16ebe92018-07-12 15:13:08 +03006205/**
Vasundhara Volamc1e5786d2019-01-28 18:00:25 +05306206 * devlink_port_param_value_changed - notify devlink on a parameter's value
6207 * change. Should be called by the driver
6208 * right after the change.
6209 *
6210 * @devlink_port: devlink_port
6211 * @param_id: parameter ID
6212 *
6213 * This function should be used by the driver to notify devlink on value
6214 * change, excluding driverinit configuration mode.
6215 * For driverinit configuration mode driver should use the function
6216 * devlink_port_param_driverinit_value_set() instead.
6217 */
6218void devlink_port_param_value_changed(struct devlink_port *devlink_port,
6219 u32 param_id)
6220{
6221 struct devlink_param_item *param_item;
6222
6223 param_item = devlink_param_find_by_id(&devlink_port->param_list,
6224 param_id);
6225 WARN_ON(!param_item);
6226
6227 devlink_param_notify(devlink_port->devlink, devlink_port->index,
6228 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
6229}
6230EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
6231
6232/**
Moshe Shemeshbde74ad12018-10-10 16:09:27 +03006233 * devlink_param_value_str_fill - Safely fill-up the string preventing
6234 * from overflow of the preallocated buffer
6235 *
6236 * @dst_val: destination devlink_param_value
6237 * @src: source buffer
6238 */
6239void devlink_param_value_str_fill(union devlink_param_value *dst_val,
6240 const char *src)
6241{
6242 size_t len;
6243
6244 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
6245 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
6246}
6247EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
6248
6249/**
Alex Veskerb16ebe92018-07-12 15:13:08 +03006250 * devlink_region_create - create a new address region
6251 *
6252 * @devlink: devlink
6253 * @region_name: region name
6254 * @region_max_snapshots: Maximum supported number of snapshots for region
6255 * @region_size: size of region
6256 */
6257struct devlink_region *devlink_region_create(struct devlink *devlink,
6258 const char *region_name,
6259 u32 region_max_snapshots,
6260 u64 region_size)
6261{
6262 struct devlink_region *region;
6263 int err = 0;
6264
6265 mutex_lock(&devlink->lock);
6266
6267 if (devlink_region_get_by_name(devlink, region_name)) {
6268 err = -EEXIST;
6269 goto unlock;
6270 }
6271
6272 region = kzalloc(sizeof(*region), GFP_KERNEL);
6273 if (!region) {
6274 err = -ENOMEM;
6275 goto unlock;
6276 }
6277
6278 region->devlink = devlink;
6279 region->max_snapshots = region_max_snapshots;
6280 region->name = region_name;
6281 region->size = region_size;
6282 INIT_LIST_HEAD(&region->snapshot_list);
6283 list_add_tail(&region->list, &devlink->region_list);
Alex Vesker866319b2018-07-12 15:13:13 +03006284 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
Alex Veskerb16ebe92018-07-12 15:13:08 +03006285
6286 mutex_unlock(&devlink->lock);
6287 return region;
6288
6289unlock:
6290 mutex_unlock(&devlink->lock);
6291 return ERR_PTR(err);
6292}
6293EXPORT_SYMBOL_GPL(devlink_region_create);
6294
6295/**
6296 * devlink_region_destroy - destroy address region
6297 *
6298 * @region: devlink region to destroy
6299 */
6300void devlink_region_destroy(struct devlink_region *region)
6301{
6302 struct devlink *devlink = region->devlink;
Alex Veskerd7e52722018-07-12 15:13:10 +03006303 struct devlink_snapshot *snapshot, *ts;
Alex Veskerb16ebe92018-07-12 15:13:08 +03006304
6305 mutex_lock(&devlink->lock);
Alex Veskerd7e52722018-07-12 15:13:10 +03006306
6307 /* Free all snapshots of region */
6308 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
6309 devlink_region_snapshot_del(snapshot);
6310
Alex Veskerb16ebe92018-07-12 15:13:08 +03006311 list_del(&region->list);
Alex Vesker866319b2018-07-12 15:13:13 +03006312
6313 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
Alex Veskerb16ebe92018-07-12 15:13:08 +03006314 mutex_unlock(&devlink->lock);
6315 kfree(region);
6316}
6317EXPORT_SYMBOL_GPL(devlink_region_destroy);
6318
Alex Veskerccadfa42018-07-12 15:13:09 +03006319/**
6320 * devlink_region_shapshot_id_get - get snapshot ID
6321 *
6322 * This callback should be called when adding a new snapshot,
6323 * Driver should use the same id for multiple snapshots taken
6324 * on multiple regions at the same time/by the same trigger.
6325 *
6326 * @devlink: devlink
6327 */
6328u32 devlink_region_shapshot_id_get(struct devlink *devlink)
6329{
6330 u32 id;
6331
6332 mutex_lock(&devlink->lock);
6333 id = ++devlink->snapshot_id;
6334 mutex_unlock(&devlink->lock);
6335
6336 return id;
6337}
6338EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get);
6339
Alex Veskerd7e52722018-07-12 15:13:10 +03006340/**
6341 * devlink_region_snapshot_create - create a new snapshot
6342 * This will add a new snapshot of a region. The snapshot
6343 * will be stored on the region struct and can be accessed
6344 * from devlink. This is useful for future analyses of snapshots.
6345 * Multiple snapshots can be created on a region.
6346 * The @snapshot_id should be obtained using the getter function.
6347 *
Jakub Kicinskieeaadd82019-02-27 11:36:36 -08006348 * @region: devlink region of the snapshot
Alex Veskerd7e52722018-07-12 15:13:10 +03006349 * @data_len: size of snapshot data
6350 * @data: snapshot data
6351 * @snapshot_id: snapshot id to be created
6352 * @data_destructor: pointer to destructor function to free data
6353 */
6354int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len,
6355 u8 *data, u32 snapshot_id,
6356 devlink_snapshot_data_dest_t *data_destructor)
6357{
6358 struct devlink *devlink = region->devlink;
6359 struct devlink_snapshot *snapshot;
6360 int err;
6361
6362 mutex_lock(&devlink->lock);
6363
6364 /* check if region can hold one more snapshot */
6365 if (region->cur_snapshots == region->max_snapshots) {
6366 err = -ENOMEM;
6367 goto unlock;
6368 }
6369
6370 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
6371 err = -EEXIST;
6372 goto unlock;
6373 }
6374
6375 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
6376 if (!snapshot) {
6377 err = -ENOMEM;
6378 goto unlock;
6379 }
6380
6381 snapshot->id = snapshot_id;
6382 snapshot->region = region;
6383 snapshot->data = data;
6384 snapshot->data_len = data_len;
6385 snapshot->data_destructor = data_destructor;
6386
6387 list_add_tail(&snapshot->list, &region->snapshot_list);
6388
6389 region->cur_snapshots++;
6390
Alex Vesker866319b2018-07-12 15:13:13 +03006391 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
Alex Veskerd7e52722018-07-12 15:13:10 +03006392 mutex_unlock(&devlink->lock);
6393 return 0;
6394
6395unlock:
6396 mutex_unlock(&devlink->lock);
6397 return err;
6398}
6399EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
6400
Jakub Kicinskiddb6e992019-01-31 10:50:47 -08006401static void __devlink_compat_running_version(struct devlink *devlink,
6402 char *buf, size_t len)
6403{
6404 const struct nlattr *nlattr;
6405 struct devlink_info_req req;
6406 struct sk_buff *msg;
6407 int rem, err;
6408
Jakub Kicinskiddb6e992019-01-31 10:50:47 -08006409 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6410 if (!msg)
6411 return;
6412
6413 req.msg = msg;
6414 err = devlink->ops->info_get(devlink, &req, NULL);
6415 if (err)
6416 goto free_msg;
6417
6418 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
6419 const struct nlattr *kv;
6420 int rem_kv;
6421
6422 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
6423 continue;
6424
6425 nla_for_each_nested(kv, nlattr, rem_kv) {
6426 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
6427 continue;
6428
6429 strlcat(buf, nla_data(kv), len);
6430 strlcat(buf, " ", len);
6431 }
6432 }
6433free_msg:
6434 nlmsg_free(msg);
6435}
6436
6437void devlink_compat_running_version(struct net_device *dev,
6438 char *buf, size_t len)
6439{
Jakub Kicinskiddb6e992019-01-31 10:50:47 -08006440 struct devlink *devlink;
6441
Jakub Kicinski1b45ff62019-02-25 19:34:06 -08006442 dev_hold(dev);
6443 rtnl_unlock();
6444
Jakub Kicinskiddb6e992019-01-31 10:50:47 -08006445 mutex_lock(&devlink_mutex);
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006446 devlink = netdev_to_devlink(dev);
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08006447 if (!devlink || !devlink->ops->info_get)
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006448 goto unlock_list;
6449
6450 mutex_lock(&devlink->lock);
6451 __devlink_compat_running_version(devlink, buf, len);
6452 mutex_unlock(&devlink->lock);
6453unlock_list:
Jakub Kicinskiddb6e992019-01-31 10:50:47 -08006454 mutex_unlock(&devlink_mutex);
Jakub Kicinski1b45ff62019-02-25 19:34:06 -08006455
6456 rtnl_lock();
6457 dev_put(dev);
Jakub Kicinskiddb6e992019-01-31 10:50:47 -08006458}
6459
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006460int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
6461{
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006462 struct devlink *devlink;
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006463 int ret = -EOPNOTSUPP;
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006464
Jakub Kicinski1b45ff62019-02-25 19:34:06 -08006465 dev_hold(dev);
6466 rtnl_unlock();
6467
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006468 mutex_lock(&devlink_mutex);
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006469 devlink = netdev_to_devlink(dev);
Jakub Kicinskibe6fe1d2019-02-25 19:34:07 -08006470 if (!devlink || !devlink->ops->flash_update)
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006471 goto unlock_list;
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006472
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006473 mutex_lock(&devlink->lock);
6474 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
6475 mutex_unlock(&devlink->lock);
6476unlock_list:
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006477 mutex_unlock(&devlink_mutex);
Jakub Kicinski1b45ff62019-02-25 19:34:06 -08006478
6479 rtnl_lock();
6480 dev_put(dev);
6481
Jakub Kicinskib473b0d2019-02-25 19:34:03 -08006482 return ret;
Jakub Kicinski4eceba12019-02-14 13:40:45 -08006483}
6484
Jakub Kicinskif4b6bcc2019-02-25 19:34:02 -08006485static int __init devlink_init(void)
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01006486{
Johannes Berg489111e2016-10-24 14:40:03 +02006487 return genl_register_family(&devlink_nl_family);
Jiri Pirkobfcd3a42016-02-26 17:32:23 +01006488}
6489
Jakub Kicinskif4b6bcc2019-02-25 19:34:02 -08006490subsys_initcall(devlink_init);