Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
bfcd3a46 JP |
2 | /* |
3 | * net/core/devlink.c - Network physical/parent device Netlink interface | |
4 | * | |
5 | * Heavily inspired by net/wireless/ | |
6 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
7 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
bfcd3a46 JP |
8 | */ |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/types.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/gfp.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/list.h> | |
17 | #include <linux/netdevice.h> | |
b8f97554 | 18 | #include <linux/spinlock.h> |
b587bdaf | 19 | #include <linux/refcount.h> |
136bf27f | 20 | #include <linux/workqueue.h> |
0f420b6c IS |
21 | #include <linux/u64_stats_sync.h> |
22 | #include <linux/timekeeping.h> | |
bfcd3a46 JP |
23 | #include <rdma/ib_verbs.h> |
24 | #include <net/netlink.h> | |
25 | #include <net/genetlink.h> | |
26 | #include <net/rtnetlink.h> | |
27 | #include <net/net_namespace.h> | |
28 | #include <net/sock.h> | |
29 | #include <net/devlink.h> | |
e5224f0f JP |
30 | #define CREATE_TRACE_POINTS |
31 | #include <trace/events/devlink.h> | |
32 | ||
11770091 AS |
33 | static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = { |
34 | { | |
12bdc5e1 | 35 | .name = "destination mac", |
11770091 AS |
36 | .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC, |
37 | .bitwidth = 48, | |
38 | }, | |
39 | }; | |
40 | ||
41 | struct devlink_dpipe_header devlink_dpipe_header_ethernet = { | |
42 | .name = "ethernet", | |
43 | .id = DEVLINK_DPIPE_HEADER_ETHERNET, | |
44 | .fields = devlink_dpipe_fields_ethernet, | |
45 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet), | |
46 | .global = true, | |
47 | }; | |
48 | EXPORT_SYMBOL(devlink_dpipe_header_ethernet); | |
49 | ||
3fb886ec AS |
50 | static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = { |
51 | { | |
52 | .name = "destination ip", | |
53 | .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP, | |
54 | .bitwidth = 32, | |
55 | }, | |
56 | }; | |
57 | ||
58 | struct devlink_dpipe_header devlink_dpipe_header_ipv4 = { | |
59 | .name = "ipv4", | |
60 | .id = DEVLINK_DPIPE_HEADER_IPV4, | |
61 | .fields = devlink_dpipe_fields_ipv4, | |
62 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4), | |
63 | .global = true, | |
64 | }; | |
65 | EXPORT_SYMBOL(devlink_dpipe_header_ipv4); | |
66 | ||
1797f5b3 AS |
67 | static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = { |
68 | { | |
69 | .name = "destination ip", | |
70 | .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP, | |
71 | .bitwidth = 128, | |
72 | }, | |
73 | }; | |
74 | ||
75 | struct devlink_dpipe_header devlink_dpipe_header_ipv6 = { | |
76 | .name = "ipv6", | |
77 | .id = DEVLINK_DPIPE_HEADER_IPV6, | |
78 | .fields = devlink_dpipe_fields_ipv6, | |
79 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6), | |
80 | .global = true, | |
81 | }; | |
82 | EXPORT_SYMBOL(devlink_dpipe_header_ipv6); | |
83 | ||
e5224f0f | 84 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg); |
57186a5f | 85 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr); |
5b88823b | 86 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report); |
bfcd3a46 | 87 | |
a1e8ae90 PP |
88 | static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = { |
89 | [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY }, | |
a556dded PP |
90 | [DEVLINK_PORT_FN_ATTR_STATE] = |
91 | NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE, | |
92 | DEVLINK_PORT_FN_STATE_ACTIVE), | |
a1e8ae90 PP |
93 | }; |
94 | ||
bfcd3a46 JP |
95 | static LIST_HEAD(devlink_list); |
96 | ||
97 | /* devlink_mutex | |
98 | * | |
99 | * An overall lock guarding every operation coming from userspace. | |
100 | * It also guards devlink devices list and it is taken when | |
101 | * driver registers/unregisters it. | |
102 | */ | |
103 | static DEFINE_MUTEX(devlink_mutex); | |
104 | ||
471f894f | 105 | struct net *devlink_net(const struct devlink *devlink) |
bfcd3a46 JP |
106 | { |
107 | return read_pnet(&devlink->_net); | |
108 | } | |
471f894f | 109 | EXPORT_SYMBOL_GPL(devlink_net); |
bfcd3a46 | 110 | |
8273fd84 | 111 | static void __devlink_net_set(struct devlink *devlink, struct net *net) |
bfcd3a46 JP |
112 | { |
113 | write_pnet(&devlink->_net, net); | |
114 | } | |
115 | ||
8273fd84 JP |
116 | void devlink_net_set(struct devlink *devlink, struct net *net) |
117 | { | |
118 | if (WARN_ON(devlink->registered)) | |
119 | return; | |
120 | __devlink_net_set(devlink, net); | |
121 | } | |
122 | EXPORT_SYMBOL_GPL(devlink_net_set); | |
123 | ||
bfcd3a46 JP |
124 | static struct devlink *devlink_get_from_attrs(struct net *net, |
125 | struct nlattr **attrs) | |
126 | { | |
127 | struct devlink *devlink; | |
128 | char *busname; | |
129 | char *devname; | |
130 | ||
131 | if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME]) | |
132 | return ERR_PTR(-EINVAL); | |
133 | ||
134 | busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]); | |
135 | devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]); | |
136 | ||
dac7c08f PP |
137 | lockdep_assert_held(&devlink_mutex); |
138 | ||
bfcd3a46 JP |
139 | list_for_each_entry(devlink, &devlink_list, list) { |
140 | if (strcmp(devlink->dev->bus->name, busname) == 0 && | |
141 | strcmp(dev_name(devlink->dev), devname) == 0 && | |
142 | net_eq(devlink_net(devlink), net)) | |
143 | return devlink; | |
144 | } | |
145 | ||
146 | return ERR_PTR(-ENODEV); | |
147 | } | |
148 | ||
149 | static struct devlink *devlink_get_from_info(struct genl_info *info) | |
150 | { | |
151 | return devlink_get_from_attrs(genl_info_net(info), info->attrs); | |
152 | } | |
153 | ||
154 | static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink, | |
c7282b50 | 155 | unsigned int port_index) |
bfcd3a46 JP |
156 | { |
157 | struct devlink_port *devlink_port; | |
158 | ||
159 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
160 | if (devlink_port->index == port_index) | |
161 | return devlink_port; | |
162 | } | |
163 | return NULL; | |
164 | } | |
165 | ||
c7282b50 PP |
166 | static bool devlink_port_index_exists(struct devlink *devlink, |
167 | unsigned int port_index) | |
bfcd3a46 JP |
168 | { |
169 | return devlink_port_get_by_index(devlink, port_index); | |
170 | } | |
171 | ||
172 | static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink, | |
173 | struct nlattr **attrs) | |
174 | { | |
175 | if (attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
176 | u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); | |
177 | struct devlink_port *devlink_port; | |
178 | ||
179 | devlink_port = devlink_port_get_by_index(devlink, port_index); | |
180 | if (!devlink_port) | |
181 | return ERR_PTR(-ENODEV); | |
182 | return devlink_port; | |
183 | } | |
184 | return ERR_PTR(-EINVAL); | |
185 | } | |
186 | ||
187 | static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink, | |
188 | struct genl_info *info) | |
189 | { | |
190 | return devlink_port_get_from_attrs(devlink, info->attrs); | |
191 | } | |
192 | ||
bf797471 JP |
193 | struct devlink_sb { |
194 | struct list_head list; | |
195 | unsigned int index; | |
196 | u32 size; | |
197 | u16 ingress_pools_count; | |
198 | u16 egress_pools_count; | |
199 | u16 ingress_tc_count; | |
200 | u16 egress_tc_count; | |
201 | }; | |
202 | ||
203 | static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb) | |
204 | { | |
205 | return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count; | |
206 | } | |
207 | ||
208 | static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink, | |
209 | unsigned int sb_index) | |
210 | { | |
211 | struct devlink_sb *devlink_sb; | |
212 | ||
213 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { | |
214 | if (devlink_sb->index == sb_index) | |
215 | return devlink_sb; | |
216 | } | |
217 | return NULL; | |
218 | } | |
219 | ||
220 | static bool devlink_sb_index_exists(struct devlink *devlink, | |
221 | unsigned int sb_index) | |
222 | { | |
223 | return devlink_sb_get_by_index(devlink, sb_index); | |
224 | } | |
225 | ||
226 | static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink, | |
227 | struct nlattr **attrs) | |
228 | { | |
229 | if (attrs[DEVLINK_ATTR_SB_INDEX]) { | |
230 | u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]); | |
231 | struct devlink_sb *devlink_sb; | |
232 | ||
233 | devlink_sb = devlink_sb_get_by_index(devlink, sb_index); | |
234 | if (!devlink_sb) | |
235 | return ERR_PTR(-ENODEV); | |
236 | return devlink_sb; | |
237 | } | |
238 | return ERR_PTR(-EINVAL); | |
239 | } | |
240 | ||
241 | static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink, | |
242 | struct genl_info *info) | |
243 | { | |
244 | return devlink_sb_get_from_attrs(devlink, info->attrs); | |
245 | } | |
246 | ||
247 | static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb, | |
248 | struct nlattr **attrs, | |
249 | u16 *p_pool_index) | |
250 | { | |
251 | u16 val; | |
252 | ||
253 | if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX]) | |
254 | return -EINVAL; | |
255 | ||
256 | val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]); | |
257 | if (val >= devlink_sb_pool_count(devlink_sb)) | |
258 | return -EINVAL; | |
259 | *p_pool_index = val; | |
260 | return 0; | |
261 | } | |
262 | ||
263 | static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb, | |
264 | struct genl_info *info, | |
265 | u16 *p_pool_index) | |
266 | { | |
267 | return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs, | |
268 | p_pool_index); | |
269 | } | |
270 | ||
271 | static int | |
272 | devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs, | |
273 | enum devlink_sb_pool_type *p_pool_type) | |
274 | { | |
275 | u8 val; | |
276 | ||
277 | if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE]) | |
278 | return -EINVAL; | |
279 | ||
280 | val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]); | |
281 | if (val != DEVLINK_SB_POOL_TYPE_INGRESS && | |
282 | val != DEVLINK_SB_POOL_TYPE_EGRESS) | |
283 | return -EINVAL; | |
284 | *p_pool_type = val; | |
285 | return 0; | |
286 | } | |
287 | ||
288 | static int | |
289 | devlink_sb_pool_type_get_from_info(struct genl_info *info, | |
290 | enum devlink_sb_pool_type *p_pool_type) | |
291 | { | |
292 | return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type); | |
293 | } | |
294 | ||
295 | static int | |
296 | devlink_sb_th_type_get_from_attrs(struct nlattr **attrs, | |
297 | enum devlink_sb_threshold_type *p_th_type) | |
298 | { | |
299 | u8 val; | |
300 | ||
301 | if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]) | |
302 | return -EINVAL; | |
303 | ||
304 | val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]); | |
305 | if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC && | |
306 | val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC) | |
307 | return -EINVAL; | |
308 | *p_th_type = val; | |
309 | return 0; | |
310 | } | |
311 | ||
312 | static int | |
313 | devlink_sb_th_type_get_from_info(struct genl_info *info, | |
314 | enum devlink_sb_threshold_type *p_th_type) | |
315 | { | |
316 | return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type); | |
317 | } | |
318 | ||
319 | static int | |
320 | devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb, | |
321 | struct nlattr **attrs, | |
322 | enum devlink_sb_pool_type pool_type, | |
323 | u16 *p_tc_index) | |
324 | { | |
325 | u16 val; | |
326 | ||
327 | if (!attrs[DEVLINK_ATTR_SB_TC_INDEX]) | |
328 | return -EINVAL; | |
329 | ||
330 | val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]); | |
331 | if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS && | |
332 | val >= devlink_sb->ingress_tc_count) | |
333 | return -EINVAL; | |
334 | if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS && | |
335 | val >= devlink_sb->egress_tc_count) | |
336 | return -EINVAL; | |
337 | *p_tc_index = val; | |
338 | return 0; | |
339 | } | |
340 | ||
341 | static int | |
342 | devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb, | |
343 | struct genl_info *info, | |
344 | enum devlink_sb_pool_type pool_type, | |
345 | u16 *p_tc_index) | |
346 | { | |
347 | return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs, | |
348 | pool_type, p_tc_index); | |
349 | } | |
350 | ||
b16ebe92 AV |
351 | struct devlink_region { |
352 | struct devlink *devlink; | |
544e7c33 | 353 | struct devlink_port *port; |
b16ebe92 | 354 | struct list_head list; |
544e7c33 AL |
355 | union { |
356 | const struct devlink_region_ops *ops; | |
357 | const struct devlink_port_region_ops *port_ops; | |
358 | }; | |
b16ebe92 AV |
359 | struct list_head snapshot_list; |
360 | u32 max_snapshots; | |
361 | u32 cur_snapshots; | |
362 | u64 size; | |
363 | }; | |
364 | ||
d7e52722 AV |
365 | struct devlink_snapshot { |
366 | struct list_head list; | |
367 | struct devlink_region *region; | |
d7e52722 AV |
368 | u8 *data; |
369 | u32 id; | |
370 | }; | |
371 | ||
b16ebe92 AV |
372 | static struct devlink_region * |
373 | devlink_region_get_by_name(struct devlink *devlink, const char *region_name) | |
374 | { | |
375 | struct devlink_region *region; | |
376 | ||
377 | list_for_each_entry(region, &devlink->region_list, list) | |
e8937681 | 378 | if (!strcmp(region->ops->name, region_name)) |
b16ebe92 AV |
379 | return region; |
380 | ||
381 | return NULL; | |
382 | } | |
383 | ||
544e7c33 AL |
384 | static struct devlink_region * |
385 | devlink_port_region_get_by_name(struct devlink_port *port, | |
386 | const char *region_name) | |
387 | { | |
388 | struct devlink_region *region; | |
389 | ||
390 | list_for_each_entry(region, &port->region_list, list) | |
391 | if (!strcmp(region->ops->name, region_name)) | |
392 | return region; | |
393 | ||
394 | return NULL; | |
395 | } | |
396 | ||
d7e52722 AV |
397 | static struct devlink_snapshot * |
398 | devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) | |
399 | { | |
400 | struct devlink_snapshot *snapshot; | |
401 | ||
402 | list_for_each_entry(snapshot, ®ion->snapshot_list, list) | |
403 | if (snapshot->id == id) | |
404 | return snapshot; | |
405 | ||
406 | return NULL; | |
407 | } | |
408 | ||
637989b5 PP |
409 | #define DEVLINK_NL_FLAG_NEED_PORT BIT(0) |
410 | #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1) | |
2406e7e5 AS |
411 | |
412 | /* The per devlink instance lock is taken by default in the pre-doit | |
413 | * operation, yet several commands do not require this. The global | |
414 | * devlink lock is taken and protects from disruption by user-calls. | |
415 | */ | |
637989b5 | 416 | #define DEVLINK_NL_FLAG_NO_LOCK BIT(2) |
bfcd3a46 JP |
417 | |
418 | static int devlink_nl_pre_doit(const struct genl_ops *ops, | |
419 | struct sk_buff *skb, struct genl_info *info) | |
420 | { | |
f4f54166 | 421 | struct devlink_port *devlink_port; |
bfcd3a46 | 422 | struct devlink *devlink; |
2406e7e5 | 423 | int err; |
bfcd3a46 JP |
424 | |
425 | mutex_lock(&devlink_mutex); | |
426 | devlink = devlink_get_from_info(info); | |
427 | if (IS_ERR(devlink)) { | |
428 | mutex_unlock(&devlink_mutex); | |
429 | return PTR_ERR(devlink); | |
430 | } | |
2406e7e5 AS |
431 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) |
432 | mutex_lock(&devlink->lock); | |
637989b5 PP |
433 | info->user_ptr[0] = devlink; |
434 | if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) { | |
bfcd3a46 JP |
435 | devlink_port = devlink_port_get_from_info(devlink, info); |
436 | if (IS_ERR(devlink_port)) { | |
2406e7e5 AS |
437 | err = PTR_ERR(devlink_port); |
438 | goto unlock; | |
bfcd3a46 | 439 | } |
637989b5 | 440 | info->user_ptr[1] = devlink_port; |
f4f54166 | 441 | } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) { |
f4f54166 VT |
442 | devlink_port = devlink_port_get_from_info(devlink, info); |
443 | if (!IS_ERR(devlink_port)) | |
444 | info->user_ptr[1] = devlink_port; | |
bfcd3a46 JP |
445 | } |
446 | return 0; | |
2406e7e5 AS |
447 | |
448 | unlock: | |
449 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) | |
450 | mutex_unlock(&devlink->lock); | |
451 | mutex_unlock(&devlink_mutex); | |
452 | return err; | |
bfcd3a46 JP |
453 | } |
454 | ||
455 | static void devlink_nl_post_doit(const struct genl_ops *ops, | |
456 | struct sk_buff *skb, struct genl_info *info) | |
457 | { | |
2406e7e5 AS |
458 | struct devlink *devlink; |
459 | ||
637989b5 PP |
460 | devlink = info->user_ptr[0]; |
461 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) | |
2406e7e5 | 462 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
463 | mutex_unlock(&devlink_mutex); |
464 | } | |
465 | ||
489111e5 | 466 | static struct genl_family devlink_nl_family; |
bfcd3a46 JP |
467 | |
468 | enum devlink_multicast_groups { | |
469 | DEVLINK_MCGRP_CONFIG, | |
470 | }; | |
471 | ||
472 | static const struct genl_multicast_group devlink_nl_mcgrps[] = { | |
473 | [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME }, | |
474 | }; | |
475 | ||
476 | static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink) | |
477 | { | |
478 | if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name)) | |
479 | return -EMSGSIZE; | |
480 | if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev))) | |
481 | return -EMSGSIZE; | |
482 | return 0; | |
483 | } | |
484 | ||
dc64cc7c MS |
485 | struct devlink_reload_combination { |
486 | enum devlink_reload_action action; | |
487 | enum devlink_reload_limit limit; | |
488 | }; | |
489 | ||
490 | static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = { | |
491 | { | |
492 | /* can't reinitialize driver with no down time */ | |
493 | .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT, | |
494 | .limit = DEVLINK_RELOAD_LIMIT_NO_RESET, | |
495 | }, | |
496 | }; | |
497 | ||
498 | static bool | |
499 | devlink_reload_combination_is_invalid(enum devlink_reload_action action, | |
500 | enum devlink_reload_limit limit) | |
501 | { | |
502 | int i; | |
503 | ||
504 | for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) | |
505 | if (devlink_reload_invalid_combinations[i].action == action && | |
506 | devlink_reload_invalid_combinations[i].limit == limit) | |
507 | return true; | |
508 | return false; | |
509 | } | |
510 | ||
ccdf0721 MS |
511 | static bool |
512 | devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action) | |
513 | { | |
514 | return test_bit(action, &devlink->ops->reload_actions); | |
515 | } | |
516 | ||
dc64cc7c MS |
517 | static bool |
518 | devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit) | |
519 | { | |
520 | return test_bit(limit, &devlink->ops->reload_limits); | |
521 | } | |
522 | ||
5204bb68 | 523 | static int devlink_reload_stat_put(struct sk_buff *msg, |
a254c264 MS |
524 | enum devlink_reload_limit limit, u32 value) |
525 | { | |
526 | struct nlattr *reload_stats_entry; | |
527 | ||
528 | reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY); | |
529 | if (!reload_stats_entry) | |
530 | return -EMSGSIZE; | |
531 | ||
5204bb68 | 532 | if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) || |
a254c264 MS |
533 | nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value)) |
534 | goto nla_put_failure; | |
535 | nla_nest_end(msg, reload_stats_entry); | |
536 | return 0; | |
537 | ||
538 | nla_put_failure: | |
539 | nla_nest_cancel(msg, reload_stats_entry); | |
540 | return -EMSGSIZE; | |
541 | } | |
542 | ||
77069ba2 | 543 | static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote) |
a254c264 | 544 | { |
5204bb68 | 545 | struct nlattr *reload_stats_attr, *act_info, *act_stats; |
a254c264 MS |
546 | int i, j, stat_idx; |
547 | u32 value; | |
548 | ||
77069ba2 MS |
549 | if (!is_remote) |
550 | reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS); | |
551 | else | |
552 | reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS); | |
a254c264 MS |
553 | |
554 | if (!reload_stats_attr) | |
555 | return -EMSGSIZE; | |
556 | ||
5204bb68 MS |
557 | for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) { |
558 | if ((!is_remote && | |
559 | !devlink_reload_action_is_supported(devlink, i)) || | |
560 | i == DEVLINK_RELOAD_ACTION_UNSPEC) | |
a254c264 | 561 | continue; |
5204bb68 MS |
562 | act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO); |
563 | if (!act_info) | |
564 | goto nla_put_failure; | |
565 | ||
566 | if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i)) | |
567 | goto action_info_nest_cancel; | |
568 | act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS); | |
569 | if (!act_stats) | |
570 | goto action_info_nest_cancel; | |
571 | ||
572 | for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) { | |
573 | /* Remote stats are shown even if not locally supported. | |
574 | * Stats of actions with unspecified limit are shown | |
575 | * though drivers don't need to register unspecified | |
576 | * limit. | |
577 | */ | |
578 | if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC && | |
579 | !devlink_reload_limit_is_supported(devlink, j)) || | |
a254c264 MS |
580 | devlink_reload_combination_is_invalid(i, j)) |
581 | continue; | |
582 | ||
583 | stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i; | |
77069ba2 MS |
584 | if (!is_remote) |
585 | value = devlink->stats.reload_stats[stat_idx]; | |
586 | else | |
587 | value = devlink->stats.remote_reload_stats[stat_idx]; | |
5204bb68 MS |
588 | if (devlink_reload_stat_put(msg, j, value)) |
589 | goto action_stats_nest_cancel; | |
a254c264 | 590 | } |
5204bb68 MS |
591 | nla_nest_end(msg, act_stats); |
592 | nla_nest_end(msg, act_info); | |
a254c264 MS |
593 | } |
594 | nla_nest_end(msg, reload_stats_attr); | |
595 | return 0; | |
596 | ||
5204bb68 MS |
597 | action_stats_nest_cancel: |
598 | nla_nest_cancel(msg, act_stats); | |
599 | action_info_nest_cancel: | |
600 | nla_nest_cancel(msg, act_info); | |
a254c264 MS |
601 | nla_put_failure: |
602 | nla_nest_cancel(msg, reload_stats_attr); | |
603 | return -EMSGSIZE; | |
604 | } | |
605 | ||
bfcd3a46 JP |
606 | static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink, |
607 | enum devlink_command cmd, u32 portid, | |
608 | u32 seq, int flags) | |
609 | { | |
a254c264 | 610 | struct nlattr *dev_stats; |
bfcd3a46 JP |
611 | void *hdr; |
612 | ||
613 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
614 | if (!hdr) | |
615 | return -EMSGSIZE; | |
616 | ||
617 | if (devlink_nl_put_handle(msg, devlink)) | |
618 | goto nla_put_failure; | |
2670ac26 JP |
619 | if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed)) |
620 | goto nla_put_failure; | |
bfcd3a46 | 621 | |
a254c264 MS |
622 | dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS); |
623 | if (!dev_stats) | |
624 | goto nla_put_failure; | |
625 | ||
77069ba2 MS |
626 | if (devlink_reload_stats_put(msg, devlink, false)) |
627 | goto dev_stats_nest_cancel; | |
628 | if (devlink_reload_stats_put(msg, devlink, true)) | |
a254c264 MS |
629 | goto dev_stats_nest_cancel; |
630 | ||
631 | nla_nest_end(msg, dev_stats); | |
bfcd3a46 JP |
632 | genlmsg_end(msg, hdr); |
633 | return 0; | |
634 | ||
a254c264 MS |
635 | dev_stats_nest_cancel: |
636 | nla_nest_cancel(msg, dev_stats); | |
bfcd3a46 JP |
637 | nla_put_failure: |
638 | genlmsg_cancel(msg, hdr); | |
639 | return -EMSGSIZE; | |
640 | } | |
641 | ||
642 | static void devlink_notify(struct devlink *devlink, enum devlink_command cmd) | |
643 | { | |
644 | struct sk_buff *msg; | |
645 | int err; | |
646 | ||
647 | WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL); | |
648 | ||
649 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
650 | if (!msg) | |
651 | return; | |
652 | ||
653 | err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0); | |
654 | if (err) { | |
655 | nlmsg_free(msg); | |
656 | return; | |
657 | } | |
658 | ||
659 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
660 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
661 | } | |
662 | ||
b9ffcbaf JP |
663 | static int devlink_nl_port_attrs_put(struct sk_buff *msg, |
664 | struct devlink_port *devlink_port) | |
665 | { | |
666 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
667 | ||
10a429ba | 668 | if (!devlink_port->attrs_set) |
b9ffcbaf | 669 | return 0; |
a21cf0a8 DR |
670 | if (attrs->lanes) { |
671 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes)) | |
672 | return -EMSGSIZE; | |
673 | } | |
a0f49b54 DR |
674 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable)) |
675 | return -EMSGSIZE; | |
5ec1380a JP |
676 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour)) |
677 | return -EMSGSIZE; | |
58b6be41 PP |
678 | switch (devlink_port->attrs.flavour) { |
679 | case DEVLINK_PORT_FLAVOUR_PCI_PF: | |
3a2d9588 PP |
680 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
681 | attrs->pci_pf.controller) || | |
682 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf)) | |
98fd2d65 | 683 | return -EMSGSIZE; |
05b595e9 PP |
684 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external)) |
685 | return -EMSGSIZE; | |
58b6be41 PP |
686 | break; |
687 | case DEVLINK_PORT_FLAVOUR_PCI_VF: | |
3a2d9588 PP |
688 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
689 | attrs->pci_vf.controller) || | |
690 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) || | |
691 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf)) | |
e41b6bf3 | 692 | return -EMSGSIZE; |
05b595e9 PP |
693 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external)) |
694 | return -EMSGSIZE; | |
58b6be41 | 695 | break; |
b8288837 PP |
696 | case DEVLINK_PORT_FLAVOUR_PCI_SF: |
697 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, | |
698 | attrs->pci_sf.controller) || | |
699 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, | |
700 | attrs->pci_sf.pf) || | |
701 | nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER, | |
702 | attrs->pci_sf.sf)) | |
703 | return -EMSGSIZE; | |
704 | break; | |
58b6be41 PP |
705 | case DEVLINK_PORT_FLAVOUR_PHYSICAL: |
706 | case DEVLINK_PORT_FLAVOUR_CPU: | |
707 | case DEVLINK_PORT_FLAVOUR_DSA: | |
acf1ee44 | 708 | case DEVLINK_PORT_FLAVOUR_VIRTUAL: |
58b6be41 PP |
709 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, |
710 | attrs->phys.port_number)) | |
711 | return -EMSGSIZE; | |
712 | if (!attrs->split) | |
713 | return 0; | |
714 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, | |
715 | attrs->phys.port_number)) | |
716 | return -EMSGSIZE; | |
717 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER, | |
718 | attrs->phys.split_subport_number)) | |
719 | return -EMSGSIZE; | |
720 | break; | |
721 | default: | |
722 | break; | |
98fd2d65 | 723 | } |
b9ffcbaf JP |
724 | return 0; |
725 | } | |
726 | ||
1230d948 PP |
727 | static int |
728 | devlink_port_fn_hw_addr_fill(struct devlink *devlink, const struct devlink_ops *ops, | |
729 | struct devlink_port *port, struct sk_buff *msg, | |
730 | struct netlink_ext_ack *extack, bool *msg_updated) | |
731 | { | |
732 | u8 hw_addr[MAX_ADDR_LEN]; | |
733 | int hw_addr_len; | |
734 | int err; | |
735 | ||
736 | if (!ops->port_function_hw_addr_get) | |
737 | return 0; | |
738 | ||
739 | err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack); | |
740 | if (err) { | |
741 | if (err == -EOPNOTSUPP) | |
742 | return 0; | |
743 | return err; | |
744 | } | |
745 | err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr); | |
746 | if (err) | |
747 | return err; | |
748 | *msg_updated = true; | |
749 | return 0; | |
750 | } | |
751 | ||
a556dded PP |
752 | static bool |
753 | devlink_port_fn_state_valid(enum devlink_port_fn_state state) | |
754 | { | |
755 | return state == DEVLINK_PORT_FN_STATE_INACTIVE || | |
756 | state == DEVLINK_PORT_FN_STATE_ACTIVE; | |
757 | } | |
758 | ||
759 | static bool | |
760 | devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate) | |
761 | { | |
762 | return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED || | |
763 | opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED; | |
764 | } | |
765 | ||
766 | static int | |
767 | devlink_port_fn_state_fill(struct devlink *devlink, | |
768 | const struct devlink_ops *ops, | |
769 | struct devlink_port *port, struct sk_buff *msg, | |
770 | struct netlink_ext_ack *extack, | |
771 | bool *msg_updated) | |
772 | { | |
773 | enum devlink_port_fn_opstate opstate; | |
774 | enum devlink_port_fn_state state; | |
775 | int err; | |
776 | ||
777 | if (!ops->port_fn_state_get) | |
778 | return 0; | |
779 | ||
780 | err = ops->port_fn_state_get(devlink, port, &state, &opstate, extack); | |
781 | if (err) { | |
782 | if (err == -EOPNOTSUPP) | |
783 | return 0; | |
784 | return err; | |
785 | } | |
786 | if (!devlink_port_fn_state_valid(state)) { | |
787 | WARN_ON_ONCE(1); | |
788 | NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver"); | |
789 | return -EINVAL; | |
790 | } | |
791 | if (!devlink_port_fn_opstate_valid(opstate)) { | |
792 | WARN_ON_ONCE(1); | |
793 | NL_SET_ERR_MSG_MOD(extack, | |
794 | "Invalid operational state read from driver"); | |
795 | return -EINVAL; | |
796 | } | |
797 | if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) || | |
798 | nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate)) | |
799 | return -EMSGSIZE; | |
800 | *msg_updated = true; | |
801 | return 0; | |
802 | } | |
803 | ||
2a916ecc PP |
804 | static int |
805 | devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port, | |
806 | struct netlink_ext_ack *extack) | |
807 | { | |
808 | struct devlink *devlink = port->devlink; | |
809 | const struct devlink_ops *ops; | |
810 | struct nlattr *function_attr; | |
1230d948 PP |
811 | bool msg_updated = false; |
812 | int err; | |
2a916ecc PP |
813 | |
814 | function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION); | |
815 | if (!function_attr) | |
816 | return -EMSGSIZE; | |
817 | ||
818 | ops = devlink->ops; | |
1230d948 PP |
819 | err = devlink_port_fn_hw_addr_fill(devlink, ops, port, msg, |
820 | extack, &msg_updated); | |
a556dded PP |
821 | if (err) |
822 | goto out; | |
823 | err = devlink_port_fn_state_fill(devlink, ops, port, msg, extack, | |
824 | &msg_updated); | |
2a916ecc | 825 | out: |
1230d948 | 826 | if (err || !msg_updated) |
2a916ecc PP |
827 | nla_nest_cancel(msg, function_attr); |
828 | else | |
829 | nla_nest_end(msg, function_attr); | |
830 | return err; | |
831 | } | |
832 | ||
bfcd3a46 JP |
833 | static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink, |
834 | struct devlink_port *devlink_port, | |
835 | enum devlink_command cmd, u32 portid, | |
a829eb0d PP |
836 | u32 seq, int flags, |
837 | struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
838 | { |
839 | void *hdr; | |
840 | ||
841 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
842 | if (!hdr) | |
843 | return -EMSGSIZE; | |
844 | ||
845 | if (devlink_nl_put_handle(msg, devlink)) | |
846 | goto nla_put_failure; | |
847 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
848 | goto nla_put_failure; | |
b8f97554 | 849 | |
b187c9b4 PP |
850 | /* Hold rtnl lock while accessing port's netdev attributes. */ |
851 | rtnl_lock(); | |
0f420b6c | 852 | spin_lock_bh(&devlink_port->type_lock); |
bfcd3a46 | 853 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type)) |
b8f97554 | 854 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
855 | if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET && |
856 | nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE, | |
857 | devlink_port->desired_type)) | |
b8f97554 | 858 | goto nla_put_failure_type_locked; |
bfcd3a46 | 859 | if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) { |
a7b43649 | 860 | struct net *net = devlink_net(devlink_port->devlink); |
bfcd3a46 JP |
861 | struct net_device *netdev = devlink_port->type_dev; |
862 | ||
a7b43649 | 863 | if (netdev && net_eq(net, dev_net(netdev)) && |
bfcd3a46 JP |
864 | (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX, |
865 | netdev->ifindex) || | |
866 | nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME, | |
867 | netdev->name))) | |
b8f97554 | 868 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
869 | } |
870 | if (devlink_port->type == DEVLINK_PORT_TYPE_IB) { | |
871 | struct ib_device *ibdev = devlink_port->type_dev; | |
872 | ||
873 | if (ibdev && | |
874 | nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME, | |
875 | ibdev->name)) | |
b8f97554 | 876 | goto nla_put_failure_type_locked; |
bfcd3a46 | 877 | } |
0f420b6c | 878 | spin_unlock_bh(&devlink_port->type_lock); |
b187c9b4 | 879 | rtnl_unlock(); |
b9ffcbaf | 880 | if (devlink_nl_port_attrs_put(msg, devlink_port)) |
bfcd3a46 | 881 | goto nla_put_failure; |
2a916ecc PP |
882 | if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack)) |
883 | goto nla_put_failure; | |
bfcd3a46 JP |
884 | |
885 | genlmsg_end(msg, hdr); | |
886 | return 0; | |
887 | ||
b8f97554 | 888 | nla_put_failure_type_locked: |
0f420b6c | 889 | spin_unlock_bh(&devlink_port->type_lock); |
b187c9b4 | 890 | rtnl_unlock(); |
bfcd3a46 JP |
891 | nla_put_failure: |
892 | genlmsg_cancel(msg, hdr); | |
893 | return -EMSGSIZE; | |
894 | } | |
895 | ||
896 | static void devlink_port_notify(struct devlink_port *devlink_port, | |
897 | enum devlink_command cmd) | |
898 | { | |
899 | struct devlink *devlink = devlink_port->devlink; | |
900 | struct sk_buff *msg; | |
901 | int err; | |
902 | ||
903 | if (!devlink_port->registered) | |
904 | return; | |
905 | ||
906 | WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL); | |
907 | ||
908 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
909 | if (!msg) | |
910 | return; | |
911 | ||
a829eb0d PP |
912 | err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0, |
913 | NULL); | |
bfcd3a46 JP |
914 | if (err) { |
915 | nlmsg_free(msg); | |
916 | return; | |
917 | } | |
918 | ||
919 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
920 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
921 | } | |
922 | ||
923 | static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info) | |
924 | { | |
925 | struct devlink *devlink = info->user_ptr[0]; | |
926 | struct sk_buff *msg; | |
927 | int err; | |
928 | ||
929 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
930 | if (!msg) | |
931 | return -ENOMEM; | |
932 | ||
933 | err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, | |
934 | info->snd_portid, info->snd_seq, 0); | |
935 | if (err) { | |
936 | nlmsg_free(msg); | |
937 | return err; | |
938 | } | |
939 | ||
940 | return genlmsg_reply(msg, info); | |
941 | } | |
942 | ||
943 | static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg, | |
944 | struct netlink_callback *cb) | |
945 | { | |
946 | struct devlink *devlink; | |
947 | int start = cb->args[0]; | |
948 | int idx = 0; | |
949 | int err; | |
950 | ||
951 | mutex_lock(&devlink_mutex); | |
952 | list_for_each_entry(devlink, &devlink_list, list) { | |
953 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
954 | continue; | |
955 | if (idx < start) { | |
956 | idx++; | |
957 | continue; | |
958 | } | |
959 | err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, | |
960 | NETLINK_CB(cb->skb).portid, | |
961 | cb->nlh->nlmsg_seq, NLM_F_MULTI); | |
962 | if (err) | |
963 | goto out; | |
964 | idx++; | |
965 | } | |
966 | out: | |
967 | mutex_unlock(&devlink_mutex); | |
968 | ||
969 | cb->args[0] = idx; | |
970 | return msg->len; | |
971 | } | |
972 | ||
973 | static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb, | |
974 | struct genl_info *info) | |
975 | { | |
637989b5 | 976 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1fc2257e | 977 | struct devlink *devlink = devlink_port->devlink; |
bfcd3a46 JP |
978 | struct sk_buff *msg; |
979 | int err; | |
980 | ||
981 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
982 | if (!msg) | |
983 | return -ENOMEM; | |
984 | ||
985 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
986 | DEVLINK_CMD_PORT_NEW, | |
a829eb0d PP |
987 | info->snd_portid, info->snd_seq, 0, |
988 | info->extack); | |
bfcd3a46 JP |
989 | if (err) { |
990 | nlmsg_free(msg); | |
991 | return err; | |
992 | } | |
993 | ||
994 | return genlmsg_reply(msg, info); | |
995 | } | |
996 | ||
997 | static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg, | |
998 | struct netlink_callback *cb) | |
999 | { | |
1000 | struct devlink *devlink; | |
1001 | struct devlink_port *devlink_port; | |
1002 | int start = cb->args[0]; | |
1003 | int idx = 0; | |
1004 | int err; | |
1005 | ||
1006 | mutex_lock(&devlink_mutex); | |
bfcd3a46 JP |
1007 | list_for_each_entry(devlink, &devlink_list, list) { |
1008 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
1009 | continue; | |
2406e7e5 | 1010 | mutex_lock(&devlink->lock); |
bfcd3a46 JP |
1011 | list_for_each_entry(devlink_port, &devlink->port_list, list) { |
1012 | if (idx < start) { | |
1013 | idx++; | |
1014 | continue; | |
1015 | } | |
1016 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
1017 | DEVLINK_CMD_NEW, | |
1018 | NETLINK_CB(cb->skb).portid, | |
1019 | cb->nlh->nlmsg_seq, | |
a829eb0d PP |
1020 | NLM_F_MULTI, |
1021 | cb->extack); | |
2406e7e5 AS |
1022 | if (err) { |
1023 | mutex_unlock(&devlink->lock); | |
bfcd3a46 | 1024 | goto out; |
2406e7e5 | 1025 | } |
bfcd3a46 JP |
1026 | idx++; |
1027 | } | |
2406e7e5 | 1028 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
1029 | } |
1030 | out: | |
bfcd3a46 JP |
1031 | mutex_unlock(&devlink_mutex); |
1032 | ||
1033 | cb->args[0] = idx; | |
1034 | return msg->len; | |
1035 | } | |
1036 | ||
1037 | static int devlink_port_type_set(struct devlink *devlink, | |
1038 | struct devlink_port *devlink_port, | |
1039 | enum devlink_port_type port_type) | |
1040 | ||
1041 | { | |
1042 | int err; | |
1043 | ||
be6fe1d8 | 1044 | if (devlink->ops->port_type_set) { |
6edf1017 ER |
1045 | if (port_type == devlink_port->type) |
1046 | return 0; | |
bfcd3a46 JP |
1047 | err = devlink->ops->port_type_set(devlink_port, port_type); |
1048 | if (err) | |
1049 | return err; | |
1050 | devlink_port->desired_type = port_type; | |
1051 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
1052 | return 0; | |
1053 | } | |
1054 | return -EOPNOTSUPP; | |
1055 | } | |
1056 | ||
a1e8ae90 PP |
1057 | static int |
1058 | devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port, | |
1059 | const struct nlattr *attr, struct netlink_ext_ack *extack) | |
1060 | { | |
1061 | const struct devlink_ops *ops; | |
1062 | const u8 *hw_addr; | |
1063 | int hw_addr_len; | |
a1e8ae90 PP |
1064 | |
1065 | hw_addr = nla_data(attr); | |
1066 | hw_addr_len = nla_len(attr); | |
1067 | if (hw_addr_len > MAX_ADDR_LEN) { | |
1068 | NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long"); | |
1069 | return -EINVAL; | |
1070 | } | |
1071 | if (port->type == DEVLINK_PORT_TYPE_ETH) { | |
1072 | if (hw_addr_len != ETH_ALEN) { | |
1073 | NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device"); | |
1074 | return -EINVAL; | |
1075 | } | |
1076 | if (!is_unicast_ether_addr(hw_addr)) { | |
1077 | NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported"); | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | ops = devlink->ops; | |
1083 | if (!ops->port_function_hw_addr_set) { | |
1084 | NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes"); | |
1085 | return -EOPNOTSUPP; | |
1086 | } | |
1087 | ||
1230d948 | 1088 | return ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack); |
a1e8ae90 | 1089 | } |
a1e8ae90 | 1090 | |
a556dded PP |
1091 | static int devlink_port_fn_state_set(struct devlink *devlink, |
1092 | struct devlink_port *port, | |
1093 | const struct nlattr *attr, | |
1094 | struct netlink_ext_ack *extack) | |
1095 | { | |
1096 | enum devlink_port_fn_state state; | |
1097 | const struct devlink_ops *ops; | |
1098 | ||
1099 | state = nla_get_u8(attr); | |
1100 | ops = devlink->ops; | |
1101 | if (!ops->port_fn_state_set) { | |
1102 | NL_SET_ERR_MSG_MOD(extack, | |
1103 | "Function does not support state setting"); | |
1104 | return -EOPNOTSUPP; | |
1105 | } | |
1106 | return ops->port_fn_state_set(devlink, port, state, extack); | |
a1e8ae90 PP |
1107 | } |
1108 | ||
1109 | static int | |
1110 | devlink_port_function_set(struct devlink *devlink, struct devlink_port *port, | |
1111 | const struct nlattr *attr, struct netlink_ext_ack *extack) | |
1112 | { | |
1113 | struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1]; | |
1114 | int err; | |
1115 | ||
1116 | err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr, | |
1117 | devlink_function_nl_policy, extack); | |
1118 | if (err < 0) { | |
1119 | NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes"); | |
1120 | return err; | |
1121 | } | |
1122 | ||
1123 | attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR]; | |
a556dded | 1124 | if (attr) { |
a1e8ae90 | 1125 | err = devlink_port_function_hw_addr_set(devlink, port, attr, extack); |
a556dded PP |
1126 | if (err) |
1127 | return err; | |
1128 | } | |
1129 | /* Keep this as the last function attribute set, so that when | |
1130 | * multiple port function attributes are set along with state, | |
1131 | * Those can be applied first before activating the state. | |
1132 | */ | |
1133 | attr = tb[DEVLINK_PORT_FN_ATTR_STATE]; | |
1134 | if (attr) | |
1135 | err = devlink_port_fn_state_set(devlink, port, attr, extack); | |
a1e8ae90 | 1136 | |
1230d948 PP |
1137 | if (!err) |
1138 | devlink_port_notify(port, DEVLINK_CMD_PORT_NEW); | |
a1e8ae90 PP |
1139 | return err; |
1140 | } | |
1141 | ||
bfcd3a46 JP |
1142 | static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb, |
1143 | struct genl_info *info) | |
1144 | { | |
637989b5 | 1145 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1fc2257e | 1146 | struct devlink *devlink = devlink_port->devlink; |
bfcd3a46 JP |
1147 | int err; |
1148 | ||
1149 | if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) { | |
1150 | enum devlink_port_type port_type; | |
1151 | ||
1152 | port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]); | |
1153 | err = devlink_port_type_set(devlink, devlink_port, port_type); | |
1154 | if (err) | |
1155 | return err; | |
1156 | } | |
a1e8ae90 PP |
1157 | |
1158 | if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) { | |
1159 | struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION]; | |
1160 | struct netlink_ext_ack *extack = info->extack; | |
1161 | ||
1162 | err = devlink_port_function_set(devlink, devlink_port, attr, extack); | |
1163 | if (err) | |
1164 | return err; | |
1165 | } | |
1166 | ||
bfcd3a46 JP |
1167 | return 0; |
1168 | } | |
1169 | ||
ac0fc8a1 DA |
1170 | static int devlink_port_split(struct devlink *devlink, u32 port_index, |
1171 | u32 count, struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
1172 | |
1173 | { | |
be6fe1d8 | 1174 | if (devlink->ops->port_split) |
ac0fc8a1 DA |
1175 | return devlink->ops->port_split(devlink, port_index, count, |
1176 | extack); | |
bfcd3a46 JP |
1177 | return -EOPNOTSUPP; |
1178 | } | |
1179 | ||
1180 | static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb, | |
1181 | struct genl_info *info) | |
1182 | { | |
1183 | struct devlink *devlink = info->user_ptr[0]; | |
82901ad1 | 1184 | struct devlink_port *devlink_port; |
bfcd3a46 JP |
1185 | u32 port_index; |
1186 | u32 count; | |
1187 | ||
1188 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] || | |
1189 | !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]) | |
1190 | return -EINVAL; | |
1191 | ||
82901ad1 | 1192 | devlink_port = devlink_port_get_from_info(devlink, info); |
bfcd3a46 JP |
1193 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); |
1194 | count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]); | |
82901ad1 DR |
1195 | |
1196 | if (IS_ERR(devlink_port)) | |
1197 | return -EINVAL; | |
1198 | ||
1199 | if (!devlink_port->attrs.splittable) { | |
1200 | /* Split ports cannot be split. */ | |
1201 | if (devlink_port->attrs.split) | |
1202 | NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further"); | |
1203 | else | |
1204 | NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split"); | |
1205 | return -EINVAL; | |
1206 | } | |
1207 | ||
1208 | if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) { | |
1209 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count"); | |
1210 | return -EINVAL; | |
1211 | } | |
1212 | ||
ac0fc8a1 | 1213 | return devlink_port_split(devlink, port_index, count, info->extack); |
bfcd3a46 JP |
1214 | } |
1215 | ||
ac0fc8a1 DA |
1216 | static int devlink_port_unsplit(struct devlink *devlink, u32 port_index, |
1217 | struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
1218 | |
1219 | { | |
be6fe1d8 | 1220 | if (devlink->ops->port_unsplit) |
ac0fc8a1 | 1221 | return devlink->ops->port_unsplit(devlink, port_index, extack); |
bfcd3a46 JP |
1222 | return -EOPNOTSUPP; |
1223 | } | |
1224 | ||
1225 | static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb, | |
1226 | struct genl_info *info) | |
1227 | { | |
1228 | struct devlink *devlink = info->user_ptr[0]; | |
1229 | u32 port_index; | |
1230 | ||
1231 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) | |
1232 | return -EINVAL; | |
1233 | ||
1234 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
ac0fc8a1 | 1235 | return devlink_port_unsplit(devlink, port_index, info->extack); |
bfcd3a46 JP |
1236 | } |
1237 | ||
cd76dcd6 PP |
1238 | static int devlink_port_new_notifiy(struct devlink *devlink, |
1239 | unsigned int port_index, | |
1240 | struct genl_info *info) | |
1241 | { | |
1242 | struct devlink_port *devlink_port; | |
1243 | struct sk_buff *msg; | |
1244 | int err; | |
1245 | ||
1246 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1247 | if (!msg) | |
1248 | return -ENOMEM; | |
1249 | ||
1250 | mutex_lock(&devlink->lock); | |
1251 | devlink_port = devlink_port_get_by_index(devlink, port_index); | |
1252 | if (!devlink_port) { | |
1253 | err = -ENODEV; | |
1254 | goto out; | |
1255 | } | |
1256 | ||
1257 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
1258 | DEVLINK_CMD_NEW, info->snd_portid, | |
1259 | info->snd_seq, 0, NULL); | |
1260 | if (err) | |
1261 | goto out; | |
1262 | ||
1263 | err = genlmsg_reply(msg, info); | |
1264 | mutex_unlock(&devlink->lock); | |
1265 | return err; | |
1266 | ||
1267 | out: | |
1268 | mutex_unlock(&devlink->lock); | |
1269 | nlmsg_free(msg); | |
1270 | return err; | |
1271 | } | |
1272 | ||
1273 | static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb, | |
1274 | struct genl_info *info) | |
1275 | { | |
1276 | struct netlink_ext_ack *extack = info->extack; | |
1277 | struct devlink_port_new_attrs new_attrs = {}; | |
1278 | struct devlink *devlink = info->user_ptr[0]; | |
1279 | unsigned int new_port_index; | |
1280 | int err; | |
1281 | ||
1282 | if (!devlink->ops->port_new || !devlink->ops->port_del) | |
1283 | return -EOPNOTSUPP; | |
1284 | ||
1285 | if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] || | |
1286 | !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) { | |
1287 | NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified"); | |
1288 | return -EINVAL; | |
1289 | } | |
1290 | new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]); | |
1291 | new_attrs.pfnum = | |
1292 | nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]); | |
1293 | ||
1294 | if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
1295 | /* Port index of the new port being created by driver. */ | |
1296 | new_attrs.port_index = | |
1297 | nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
1298 | new_attrs.port_index_valid = true; | |
1299 | } | |
1300 | if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) { | |
1301 | new_attrs.controller = | |
1302 | nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]); | |
1303 | new_attrs.controller_valid = true; | |
1304 | } | |
1305 | if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF && | |
1306 | info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) { | |
1307 | new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]); | |
1308 | new_attrs.sfnum_valid = true; | |
1309 | } | |
1310 | ||
1311 | err = devlink->ops->port_new(devlink, &new_attrs, extack, | |
1312 | &new_port_index); | |
1313 | if (err) | |
1314 | return err; | |
1315 | ||
1316 | err = devlink_port_new_notifiy(devlink, new_port_index, info); | |
1317 | if (err && err != -ENODEV) { | |
1318 | /* Fail to send the response; destroy newly created port. */ | |
1319 | devlink->ops->port_del(devlink, new_port_index, extack); | |
1320 | } | |
1321 | return err; | |
1322 | } | |
1323 | ||
1324 | static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb, | |
1325 | struct genl_info *info) | |
1326 | { | |
1327 | struct netlink_ext_ack *extack = info->extack; | |
1328 | struct devlink *devlink = info->user_ptr[0]; | |
1329 | unsigned int port_index; | |
1330 | ||
1331 | if (!devlink->ops->port_del) | |
1332 | return -EOPNOTSUPP; | |
1333 | ||
1334 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
1335 | NL_SET_ERR_MSG_MOD(extack, "Port index is not specified"); | |
1336 | return -EINVAL; | |
1337 | } | |
1338 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
1339 | ||
1340 | return devlink->ops->port_del(devlink, port_index, extack); | |
1341 | } | |
1342 | ||
bf797471 JP |
1343 | static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink, |
1344 | struct devlink_sb *devlink_sb, | |
1345 | enum devlink_command cmd, u32 portid, | |
1346 | u32 seq, int flags) | |
1347 | { | |
1348 | void *hdr; | |
1349 | ||
1350 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1351 | if (!hdr) | |
1352 | return -EMSGSIZE; | |
1353 | ||
1354 | if (devlink_nl_put_handle(msg, devlink)) | |
1355 | goto nla_put_failure; | |
1356 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1357 | goto nla_put_failure; | |
1358 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size)) | |
1359 | goto nla_put_failure; | |
1360 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT, | |
1361 | devlink_sb->ingress_pools_count)) | |
1362 | goto nla_put_failure; | |
1363 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT, | |
1364 | devlink_sb->egress_pools_count)) | |
1365 | goto nla_put_failure; | |
1366 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT, | |
1367 | devlink_sb->ingress_tc_count)) | |
1368 | goto nla_put_failure; | |
1369 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT, | |
1370 | devlink_sb->egress_tc_count)) | |
1371 | goto nla_put_failure; | |
1372 | ||
1373 | genlmsg_end(msg, hdr); | |
1374 | return 0; | |
1375 | ||
1376 | nla_put_failure: | |
1377 | genlmsg_cancel(msg, hdr); | |
1378 | return -EMSGSIZE; | |
1379 | } | |
1380 | ||
1381 | static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb, | |
1382 | struct genl_info *info) | |
1383 | { | |
1384 | struct devlink *devlink = info->user_ptr[0]; | |
637989b5 | 1385 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1386 | struct sk_buff *msg; |
1387 | int err; | |
1388 | ||
637989b5 PP |
1389 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1390 | if (IS_ERR(devlink_sb)) | |
1391 | return PTR_ERR(devlink_sb); | |
1392 | ||
bf797471 JP |
1393 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1394 | if (!msg) | |
1395 | return -ENOMEM; | |
1396 | ||
1397 | err = devlink_nl_sb_fill(msg, devlink, devlink_sb, | |
1398 | DEVLINK_CMD_SB_NEW, | |
1399 | info->snd_portid, info->snd_seq, 0); | |
1400 | if (err) { | |
1401 | nlmsg_free(msg); | |
1402 | return err; | |
1403 | } | |
1404 | ||
1405 | return genlmsg_reply(msg, info); | |
1406 | } | |
1407 | ||
1408 | static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg, | |
1409 | struct netlink_callback *cb) | |
1410 | { | |
1411 | struct devlink *devlink; | |
1412 | struct devlink_sb *devlink_sb; | |
1413 | int start = cb->args[0]; | |
1414 | int idx = 0; | |
1415 | int err; | |
1416 | ||
1417 | mutex_lock(&devlink_mutex); | |
1418 | list_for_each_entry(devlink, &devlink_list, list) { | |
1419 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
1420 | continue; | |
2406e7e5 | 1421 | mutex_lock(&devlink->lock); |
bf797471 JP |
1422 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1423 | if (idx < start) { | |
1424 | idx++; | |
1425 | continue; | |
1426 | } | |
1427 | err = devlink_nl_sb_fill(msg, devlink, devlink_sb, | |
1428 | DEVLINK_CMD_SB_NEW, | |
1429 | NETLINK_CB(cb->skb).portid, | |
1430 | cb->nlh->nlmsg_seq, | |
1431 | NLM_F_MULTI); | |
2406e7e5 AS |
1432 | if (err) { |
1433 | mutex_unlock(&devlink->lock); | |
bf797471 | 1434 | goto out; |
2406e7e5 | 1435 | } |
bf797471 JP |
1436 | idx++; |
1437 | } | |
2406e7e5 | 1438 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1439 | } |
1440 | out: | |
1441 | mutex_unlock(&devlink_mutex); | |
1442 | ||
1443 | cb->args[0] = idx; | |
1444 | return msg->len; | |
1445 | } | |
1446 | ||
1447 | static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink, | |
1448 | struct devlink_sb *devlink_sb, | |
1449 | u16 pool_index, enum devlink_command cmd, | |
1450 | u32 portid, u32 seq, int flags) | |
1451 | { | |
1452 | struct devlink_sb_pool_info pool_info; | |
1453 | void *hdr; | |
1454 | int err; | |
1455 | ||
1456 | err = devlink->ops->sb_pool_get(devlink, devlink_sb->index, | |
1457 | pool_index, &pool_info); | |
1458 | if (err) | |
1459 | return err; | |
1460 | ||
1461 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1462 | if (!hdr) | |
1463 | return -EMSGSIZE; | |
1464 | ||
1465 | if (devlink_nl_put_handle(msg, devlink)) | |
1466 | goto nla_put_failure; | |
1467 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1468 | goto nla_put_failure; | |
1469 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1470 | goto nla_put_failure; | |
1471 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type)) | |
1472 | goto nla_put_failure; | |
1473 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size)) | |
1474 | goto nla_put_failure; | |
1475 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE, | |
1476 | pool_info.threshold_type)) | |
1477 | goto nla_put_failure; | |
bff5731d JK |
1478 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE, |
1479 | pool_info.cell_size)) | |
1480 | goto nla_put_failure; | |
bf797471 JP |
1481 | |
1482 | genlmsg_end(msg, hdr); | |
1483 | return 0; | |
1484 | ||
1485 | nla_put_failure: | |
1486 | genlmsg_cancel(msg, hdr); | |
1487 | return -EMSGSIZE; | |
1488 | } | |
1489 | ||
1490 | static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb, | |
1491 | struct genl_info *info) | |
1492 | { | |
1493 | struct devlink *devlink = info->user_ptr[0]; | |
637989b5 | 1494 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1495 | struct sk_buff *msg; |
1496 | u16 pool_index; | |
1497 | int err; | |
1498 | ||
637989b5 PP |
1499 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1500 | if (IS_ERR(devlink_sb)) | |
1501 | return PTR_ERR(devlink_sb); | |
1502 | ||
bf797471 JP |
1503 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1504 | &pool_index); | |
1505 | if (err) | |
1506 | return err; | |
1507 | ||
be6fe1d8 | 1508 | if (!devlink->ops->sb_pool_get) |
bf797471 JP |
1509 | return -EOPNOTSUPP; |
1510 | ||
1511 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1512 | if (!msg) | |
1513 | return -ENOMEM; | |
1514 | ||
1515 | err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index, | |
1516 | DEVLINK_CMD_SB_POOL_NEW, | |
1517 | info->snd_portid, info->snd_seq, 0); | |
1518 | if (err) { | |
1519 | nlmsg_free(msg); | |
1520 | return err; | |
1521 | } | |
1522 | ||
1523 | return genlmsg_reply(msg, info); | |
1524 | } | |
1525 | ||
1526 | static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, | |
1527 | struct devlink *devlink, | |
1528 | struct devlink_sb *devlink_sb, | |
1529 | u32 portid, u32 seq) | |
1530 | { | |
1531 | u16 pool_count = devlink_sb_pool_count(devlink_sb); | |
1532 | u16 pool_index; | |
1533 | int err; | |
1534 | ||
1535 | for (pool_index = 0; pool_index < pool_count; pool_index++) { | |
1536 | if (*p_idx < start) { | |
1537 | (*p_idx)++; | |
1538 | continue; | |
1539 | } | |
1540 | err = devlink_nl_sb_pool_fill(msg, devlink, | |
1541 | devlink_sb, | |
1542 | pool_index, | |
1543 | DEVLINK_CMD_SB_POOL_NEW, | |
1544 | portid, seq, NLM_F_MULTI); | |
1545 | if (err) | |
1546 | return err; | |
1547 | (*p_idx)++; | |
1548 | } | |
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg, | |
1553 | struct netlink_callback *cb) | |
1554 | { | |
1555 | struct devlink *devlink; | |
1556 | struct devlink_sb *devlink_sb; | |
1557 | int start = cb->args[0]; | |
1558 | int idx = 0; | |
c62c2cfb | 1559 | int err = 0; |
bf797471 JP |
1560 | |
1561 | mutex_lock(&devlink_mutex); | |
1562 | list_for_each_entry(devlink, &devlink_list, list) { | |
1563 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1564 | !devlink->ops->sb_pool_get) |
bf797471 | 1565 | continue; |
2406e7e5 | 1566 | mutex_lock(&devlink->lock); |
bf797471 JP |
1567 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1568 | err = __sb_pool_get_dumpit(msg, start, &idx, devlink, | |
1569 | devlink_sb, | |
1570 | NETLINK_CB(cb->skb).portid, | |
1571 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1572 | if (err == -EOPNOTSUPP) { |
1573 | err = 0; | |
1574 | } else if (err) { | |
2406e7e5 | 1575 | mutex_unlock(&devlink->lock); |
bf797471 | 1576 | goto out; |
2406e7e5 | 1577 | } |
bf797471 | 1578 | } |
2406e7e5 | 1579 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1580 | } |
1581 | out: | |
1582 | mutex_unlock(&devlink_mutex); | |
1583 | ||
c62c2cfb JP |
1584 | if (err != -EMSGSIZE) |
1585 | return err; | |
1586 | ||
bf797471 JP |
1587 | cb->args[0] = idx; |
1588 | return msg->len; | |
1589 | } | |
1590 | ||
1591 | static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index, | |
1592 | u16 pool_index, u32 size, | |
f2ad1a52 IS |
1593 | enum devlink_sb_threshold_type threshold_type, |
1594 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1595 | |
1596 | { | |
1597 | const struct devlink_ops *ops = devlink->ops; | |
1598 | ||
be6fe1d8 | 1599 | if (ops->sb_pool_set) |
bf797471 | 1600 | return ops->sb_pool_set(devlink, sb_index, pool_index, |
f2ad1a52 | 1601 | size, threshold_type, extack); |
bf797471 JP |
1602 | return -EOPNOTSUPP; |
1603 | } | |
1604 | ||
1605 | static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb, | |
1606 | struct genl_info *info) | |
1607 | { | |
1608 | struct devlink *devlink = info->user_ptr[0]; | |
bf797471 | 1609 | enum devlink_sb_threshold_type threshold_type; |
637989b5 | 1610 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1611 | u16 pool_index; |
1612 | u32 size; | |
1613 | int err; | |
1614 | ||
637989b5 PP |
1615 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1616 | if (IS_ERR(devlink_sb)) | |
1617 | return PTR_ERR(devlink_sb); | |
1618 | ||
bf797471 JP |
1619 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1620 | &pool_index); | |
1621 | if (err) | |
1622 | return err; | |
1623 | ||
1624 | err = devlink_sb_th_type_get_from_info(info, &threshold_type); | |
1625 | if (err) | |
1626 | return err; | |
1627 | ||
1628 | if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]) | |
1629 | return -EINVAL; | |
1630 | ||
1631 | size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]); | |
1632 | return devlink_sb_pool_set(devlink, devlink_sb->index, | |
f2ad1a52 IS |
1633 | pool_index, size, threshold_type, |
1634 | info->extack); | |
bf797471 JP |
1635 | } |
1636 | ||
1637 | static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg, | |
1638 | struct devlink *devlink, | |
1639 | struct devlink_port *devlink_port, | |
1640 | struct devlink_sb *devlink_sb, | |
1641 | u16 pool_index, | |
1642 | enum devlink_command cmd, | |
1643 | u32 portid, u32 seq, int flags) | |
1644 | { | |
df38dafd | 1645 | const struct devlink_ops *ops = devlink->ops; |
bf797471 JP |
1646 | u32 threshold; |
1647 | void *hdr; | |
1648 | int err; | |
1649 | ||
df38dafd JP |
1650 | err = ops->sb_port_pool_get(devlink_port, devlink_sb->index, |
1651 | pool_index, &threshold); | |
bf797471 JP |
1652 | if (err) |
1653 | return err; | |
1654 | ||
1655 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1656 | if (!hdr) | |
1657 | return -EMSGSIZE; | |
1658 | ||
1659 | if (devlink_nl_put_handle(msg, devlink)) | |
1660 | goto nla_put_failure; | |
1661 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
1662 | goto nla_put_failure; | |
1663 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1664 | goto nla_put_failure; | |
1665 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1666 | goto nla_put_failure; | |
1667 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) | |
1668 | goto nla_put_failure; | |
1669 | ||
df38dafd JP |
1670 | if (ops->sb_occ_port_pool_get) { |
1671 | u32 cur; | |
1672 | u32 max; | |
1673 | ||
1674 | err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index, | |
1675 | pool_index, &cur, &max); | |
1676 | if (err && err != -EOPNOTSUPP) | |
849920c7 | 1677 | goto sb_occ_get_failure; |
df38dafd JP |
1678 | if (!err) { |
1679 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) | |
1680 | goto nla_put_failure; | |
1681 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) | |
1682 | goto nla_put_failure; | |
1683 | } | |
1684 | } | |
1685 | ||
bf797471 JP |
1686 | genlmsg_end(msg, hdr); |
1687 | return 0; | |
1688 | ||
1689 | nla_put_failure: | |
849920c7 WH |
1690 | err = -EMSGSIZE; |
1691 | sb_occ_get_failure: | |
bf797471 | 1692 | genlmsg_cancel(msg, hdr); |
849920c7 | 1693 | return err; |
bf797471 JP |
1694 | } |
1695 | ||
1696 | static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb, | |
1697 | struct genl_info *info) | |
1698 | { | |
637989b5 | 1699 | struct devlink_port *devlink_port = info->user_ptr[1]; |
bf797471 | 1700 | struct devlink *devlink = devlink_port->devlink; |
637989b5 | 1701 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1702 | struct sk_buff *msg; |
1703 | u16 pool_index; | |
1704 | int err; | |
1705 | ||
637989b5 PP |
1706 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1707 | if (IS_ERR(devlink_sb)) | |
1708 | return PTR_ERR(devlink_sb); | |
1709 | ||
bf797471 JP |
1710 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1711 | &pool_index); | |
1712 | if (err) | |
1713 | return err; | |
1714 | ||
be6fe1d8 | 1715 | if (!devlink->ops->sb_port_pool_get) |
bf797471 JP |
1716 | return -EOPNOTSUPP; |
1717 | ||
1718 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1719 | if (!msg) | |
1720 | return -ENOMEM; | |
1721 | ||
1722 | err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port, | |
1723 | devlink_sb, pool_index, | |
1724 | DEVLINK_CMD_SB_PORT_POOL_NEW, | |
1725 | info->snd_portid, info->snd_seq, 0); | |
1726 | if (err) { | |
1727 | nlmsg_free(msg); | |
1728 | return err; | |
1729 | } | |
1730 | ||
1731 | return genlmsg_reply(msg, info); | |
1732 | } | |
1733 | ||
1734 | static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, | |
1735 | struct devlink *devlink, | |
1736 | struct devlink_sb *devlink_sb, | |
1737 | u32 portid, u32 seq) | |
1738 | { | |
1739 | struct devlink_port *devlink_port; | |
1740 | u16 pool_count = devlink_sb_pool_count(devlink_sb); | |
1741 | u16 pool_index; | |
1742 | int err; | |
1743 | ||
1744 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
1745 | for (pool_index = 0; pool_index < pool_count; pool_index++) { | |
1746 | if (*p_idx < start) { | |
1747 | (*p_idx)++; | |
1748 | continue; | |
1749 | } | |
1750 | err = devlink_nl_sb_port_pool_fill(msg, devlink, | |
1751 | devlink_port, | |
1752 | devlink_sb, | |
1753 | pool_index, | |
1754 | DEVLINK_CMD_SB_PORT_POOL_NEW, | |
1755 | portid, seq, | |
1756 | NLM_F_MULTI); | |
1757 | if (err) | |
1758 | return err; | |
1759 | (*p_idx)++; | |
1760 | } | |
1761 | } | |
1762 | return 0; | |
1763 | } | |
1764 | ||
1765 | static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg, | |
1766 | struct netlink_callback *cb) | |
1767 | { | |
1768 | struct devlink *devlink; | |
1769 | struct devlink_sb *devlink_sb; | |
1770 | int start = cb->args[0]; | |
1771 | int idx = 0; | |
c62c2cfb | 1772 | int err = 0; |
bf797471 JP |
1773 | |
1774 | mutex_lock(&devlink_mutex); | |
bf797471 JP |
1775 | list_for_each_entry(devlink, &devlink_list, list) { |
1776 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1777 | !devlink->ops->sb_port_pool_get) |
bf797471 | 1778 | continue; |
2406e7e5 | 1779 | mutex_lock(&devlink->lock); |
bf797471 JP |
1780 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1781 | err = __sb_port_pool_get_dumpit(msg, start, &idx, | |
1782 | devlink, devlink_sb, | |
1783 | NETLINK_CB(cb->skb).portid, | |
1784 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1785 | if (err == -EOPNOTSUPP) { |
1786 | err = 0; | |
1787 | } else if (err) { | |
2406e7e5 | 1788 | mutex_unlock(&devlink->lock); |
bf797471 | 1789 | goto out; |
2406e7e5 | 1790 | } |
bf797471 | 1791 | } |
2406e7e5 | 1792 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1793 | } |
1794 | out: | |
bf797471 JP |
1795 | mutex_unlock(&devlink_mutex); |
1796 | ||
c62c2cfb JP |
1797 | if (err != -EMSGSIZE) |
1798 | return err; | |
1799 | ||
bf797471 JP |
1800 | cb->args[0] = idx; |
1801 | return msg->len; | |
1802 | } | |
1803 | ||
1804 | static int devlink_sb_port_pool_set(struct devlink_port *devlink_port, | |
1805 | unsigned int sb_index, u16 pool_index, | |
f2ad1a52 IS |
1806 | u32 threshold, |
1807 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1808 | |
1809 | { | |
1810 | const struct devlink_ops *ops = devlink_port->devlink->ops; | |
1811 | ||
be6fe1d8 | 1812 | if (ops->sb_port_pool_set) |
bf797471 | 1813 | return ops->sb_port_pool_set(devlink_port, sb_index, |
f2ad1a52 | 1814 | pool_index, threshold, extack); |
bf797471 JP |
1815 | return -EOPNOTSUPP; |
1816 | } | |
1817 | ||
1818 | static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb, | |
1819 | struct genl_info *info) | |
1820 | { | |
637989b5 PP |
1821 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1822 | struct devlink *devlink = info->user_ptr[0]; | |
1823 | struct devlink_sb *devlink_sb; | |
bf797471 JP |
1824 | u16 pool_index; |
1825 | u32 threshold; | |
1826 | int err; | |
1827 | ||
637989b5 PP |
1828 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1829 | if (IS_ERR(devlink_sb)) | |
1830 | return PTR_ERR(devlink_sb); | |
1831 | ||
bf797471 JP |
1832 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1833 | &pool_index); | |
1834 | if (err) | |
1835 | return err; | |
1836 | ||
1837 | if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) | |
1838 | return -EINVAL; | |
1839 | ||
1840 | threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); | |
1841 | return devlink_sb_port_pool_set(devlink_port, devlink_sb->index, | |
f2ad1a52 | 1842 | pool_index, threshold, info->extack); |
bf797471 JP |
1843 | } |
1844 | ||
1845 | static int | |
1846 | devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink, | |
1847 | struct devlink_port *devlink_port, | |
1848 | struct devlink_sb *devlink_sb, u16 tc_index, | |
1849 | enum devlink_sb_pool_type pool_type, | |
1850 | enum devlink_command cmd, | |
1851 | u32 portid, u32 seq, int flags) | |
1852 | { | |
df38dafd | 1853 | const struct devlink_ops *ops = devlink->ops; |
bf797471 JP |
1854 | u16 pool_index; |
1855 | u32 threshold; | |
1856 | void *hdr; | |
1857 | int err; | |
1858 | ||
df38dafd JP |
1859 | err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index, |
1860 | tc_index, pool_type, | |
1861 | &pool_index, &threshold); | |
bf797471 JP |
1862 | if (err) |
1863 | return err; | |
1864 | ||
1865 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1866 | if (!hdr) | |
1867 | return -EMSGSIZE; | |
1868 | ||
1869 | if (devlink_nl_put_handle(msg, devlink)) | |
1870 | goto nla_put_failure; | |
1871 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
1872 | goto nla_put_failure; | |
1873 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1874 | goto nla_put_failure; | |
1875 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index)) | |
1876 | goto nla_put_failure; | |
1877 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type)) | |
1878 | goto nla_put_failure; | |
1879 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1880 | goto nla_put_failure; | |
1881 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) | |
1882 | goto nla_put_failure; | |
1883 | ||
df38dafd JP |
1884 | if (ops->sb_occ_tc_port_bind_get) { |
1885 | u32 cur; | |
1886 | u32 max; | |
1887 | ||
1888 | err = ops->sb_occ_tc_port_bind_get(devlink_port, | |
1889 | devlink_sb->index, | |
1890 | tc_index, pool_type, | |
1891 | &cur, &max); | |
1892 | if (err && err != -EOPNOTSUPP) | |
1893 | return err; | |
1894 | if (!err) { | |
1895 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) | |
1896 | goto nla_put_failure; | |
1897 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) | |
1898 | goto nla_put_failure; | |
1899 | } | |
1900 | } | |
1901 | ||
bf797471 JP |
1902 | genlmsg_end(msg, hdr); |
1903 | return 0; | |
1904 | ||
1905 | nla_put_failure: | |
1906 | genlmsg_cancel(msg, hdr); | |
1907 | return -EMSGSIZE; | |
1908 | } | |
1909 | ||
1910 | static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb, | |
1911 | struct genl_info *info) | |
1912 | { | |
637989b5 | 1913 | struct devlink_port *devlink_port = info->user_ptr[1]; |
bf797471 | 1914 | struct devlink *devlink = devlink_port->devlink; |
637989b5 | 1915 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1916 | struct sk_buff *msg; |
1917 | enum devlink_sb_pool_type pool_type; | |
1918 | u16 tc_index; | |
1919 | int err; | |
1920 | ||
637989b5 PP |
1921 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1922 | if (IS_ERR(devlink_sb)) | |
1923 | return PTR_ERR(devlink_sb); | |
1924 | ||
bf797471 JP |
1925 | err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
1926 | if (err) | |
1927 | return err; | |
1928 | ||
1929 | err = devlink_sb_tc_index_get_from_info(devlink_sb, info, | |
1930 | pool_type, &tc_index); | |
1931 | if (err) | |
1932 | return err; | |
1933 | ||
be6fe1d8 | 1934 | if (!devlink->ops->sb_tc_pool_bind_get) |
bf797471 JP |
1935 | return -EOPNOTSUPP; |
1936 | ||
1937 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1938 | if (!msg) | |
1939 | return -ENOMEM; | |
1940 | ||
1941 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port, | |
1942 | devlink_sb, tc_index, pool_type, | |
1943 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1944 | info->snd_portid, | |
1945 | info->snd_seq, 0); | |
1946 | if (err) { | |
1947 | nlmsg_free(msg); | |
1948 | return err; | |
1949 | } | |
1950 | ||
1951 | return genlmsg_reply(msg, info); | |
1952 | } | |
1953 | ||
1954 | static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, | |
1955 | int start, int *p_idx, | |
1956 | struct devlink *devlink, | |
1957 | struct devlink_sb *devlink_sb, | |
1958 | u32 portid, u32 seq) | |
1959 | { | |
1960 | struct devlink_port *devlink_port; | |
1961 | u16 tc_index; | |
1962 | int err; | |
1963 | ||
1964 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
1965 | for (tc_index = 0; | |
1966 | tc_index < devlink_sb->ingress_tc_count; tc_index++) { | |
1967 | if (*p_idx < start) { | |
1968 | (*p_idx)++; | |
1969 | continue; | |
1970 | } | |
1971 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, | |
1972 | devlink_port, | |
1973 | devlink_sb, | |
1974 | tc_index, | |
1975 | DEVLINK_SB_POOL_TYPE_INGRESS, | |
1976 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1977 | portid, seq, | |
1978 | NLM_F_MULTI); | |
1979 | if (err) | |
1980 | return err; | |
1981 | (*p_idx)++; | |
1982 | } | |
1983 | for (tc_index = 0; | |
1984 | tc_index < devlink_sb->egress_tc_count; tc_index++) { | |
1985 | if (*p_idx < start) { | |
1986 | (*p_idx)++; | |
1987 | continue; | |
1988 | } | |
1989 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, | |
1990 | devlink_port, | |
1991 | devlink_sb, | |
1992 | tc_index, | |
1993 | DEVLINK_SB_POOL_TYPE_EGRESS, | |
1994 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1995 | portid, seq, | |
1996 | NLM_F_MULTI); | |
1997 | if (err) | |
1998 | return err; | |
1999 | (*p_idx)++; | |
2000 | } | |
2001 | } | |
2002 | return 0; | |
2003 | } | |
2004 | ||
2005 | static int | |
2006 | devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, | |
2007 | struct netlink_callback *cb) | |
2008 | { | |
2009 | struct devlink *devlink; | |
2010 | struct devlink_sb *devlink_sb; | |
2011 | int start = cb->args[0]; | |
2012 | int idx = 0; | |
c62c2cfb | 2013 | int err = 0; |
bf797471 JP |
2014 | |
2015 | mutex_lock(&devlink_mutex); | |
bf797471 JP |
2016 | list_for_each_entry(devlink, &devlink_list, list) { |
2017 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 2018 | !devlink->ops->sb_tc_pool_bind_get) |
bf797471 | 2019 | continue; |
2406e7e5 AS |
2020 | |
2021 | mutex_lock(&devlink->lock); | |
bf797471 JP |
2022 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
2023 | err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx, | |
2024 | devlink, | |
2025 | devlink_sb, | |
2026 | NETLINK_CB(cb->skb).portid, | |
2027 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
2028 | if (err == -EOPNOTSUPP) { |
2029 | err = 0; | |
2030 | } else if (err) { | |
2406e7e5 | 2031 | mutex_unlock(&devlink->lock); |
bf797471 | 2032 | goto out; |
2406e7e5 | 2033 | } |
bf797471 | 2034 | } |
2406e7e5 | 2035 | mutex_unlock(&devlink->lock); |
bf797471 JP |
2036 | } |
2037 | out: | |
bf797471 JP |
2038 | mutex_unlock(&devlink_mutex); |
2039 | ||
c62c2cfb JP |
2040 | if (err != -EMSGSIZE) |
2041 | return err; | |
2042 | ||
bf797471 JP |
2043 | cb->args[0] = idx; |
2044 | return msg->len; | |
2045 | } | |
2046 | ||
2047 | static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port, | |
2048 | unsigned int sb_index, u16 tc_index, | |
2049 | enum devlink_sb_pool_type pool_type, | |
f2ad1a52 IS |
2050 | u16 pool_index, u32 threshold, |
2051 | struct netlink_ext_ack *extack) | |
bf797471 JP |
2052 | |
2053 | { | |
2054 | const struct devlink_ops *ops = devlink_port->devlink->ops; | |
2055 | ||
be6fe1d8 | 2056 | if (ops->sb_tc_pool_bind_set) |
bf797471 JP |
2057 | return ops->sb_tc_pool_bind_set(devlink_port, sb_index, |
2058 | tc_index, pool_type, | |
f2ad1a52 | 2059 | pool_index, threshold, extack); |
bf797471 JP |
2060 | return -EOPNOTSUPP; |
2061 | } | |
2062 | ||
2063 | static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb, | |
2064 | struct genl_info *info) | |
2065 | { | |
637989b5 PP |
2066 | struct devlink_port *devlink_port = info->user_ptr[1]; |
2067 | struct devlink *devlink = info->user_ptr[0]; | |
bf797471 | 2068 | enum devlink_sb_pool_type pool_type; |
637989b5 | 2069 | struct devlink_sb *devlink_sb; |
bf797471 JP |
2070 | u16 tc_index; |
2071 | u16 pool_index; | |
2072 | u32 threshold; | |
2073 | int err; | |
2074 | ||
637989b5 PP |
2075 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
2076 | if (IS_ERR(devlink_sb)) | |
2077 | return PTR_ERR(devlink_sb); | |
2078 | ||
bf797471 JP |
2079 | err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
2080 | if (err) | |
2081 | return err; | |
2082 | ||
2083 | err = devlink_sb_tc_index_get_from_info(devlink_sb, info, | |
2084 | pool_type, &tc_index); | |
2085 | if (err) | |
2086 | return err; | |
2087 | ||
2088 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, | |
2089 | &pool_index); | |
2090 | if (err) | |
2091 | return err; | |
2092 | ||
2093 | if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) | |
2094 | return -EINVAL; | |
2095 | ||
2096 | threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); | |
2097 | return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index, | |
2098 | tc_index, pool_type, | |
f2ad1a52 | 2099 | pool_index, threshold, info->extack); |
bf797471 JP |
2100 | } |
2101 | ||
df38dafd JP |
2102 | static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb, |
2103 | struct genl_info *info) | |
2104 | { | |
2105 | struct devlink *devlink = info->user_ptr[0]; | |
df38dafd | 2106 | const struct devlink_ops *ops = devlink->ops; |
637989b5 PP |
2107 | struct devlink_sb *devlink_sb; |
2108 | ||
2109 | devlink_sb = devlink_sb_get_from_info(devlink, info); | |
2110 | if (IS_ERR(devlink_sb)) | |
2111 | return PTR_ERR(devlink_sb); | |
df38dafd | 2112 | |
be6fe1d8 | 2113 | if (ops->sb_occ_snapshot) |
df38dafd JP |
2114 | return ops->sb_occ_snapshot(devlink, devlink_sb->index); |
2115 | return -EOPNOTSUPP; | |
2116 | } | |
2117 | ||
2118 | static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb, | |
2119 | struct genl_info *info) | |
2120 | { | |
2121 | struct devlink *devlink = info->user_ptr[0]; | |
df38dafd | 2122 | const struct devlink_ops *ops = devlink->ops; |
637989b5 PP |
2123 | struct devlink_sb *devlink_sb; |
2124 | ||
2125 | devlink_sb = devlink_sb_get_from_info(devlink, info); | |
2126 | if (IS_ERR(devlink_sb)) | |
2127 | return PTR_ERR(devlink_sb); | |
df38dafd | 2128 | |
be6fe1d8 | 2129 | if (ops->sb_occ_max_clear) |
df38dafd JP |
2130 | return ops->sb_occ_max_clear(devlink, devlink_sb->index); |
2131 | return -EOPNOTSUPP; | |
2132 | } | |
2133 | ||
21e3d2dd JP |
2134 | static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink, |
2135 | enum devlink_command cmd, u32 portid, | |
2136 | u32 seq, int flags) | |
08f4b591 | 2137 | { |
59bfde01 | 2138 | const struct devlink_ops *ops = devlink->ops; |
98fdbea5 LR |
2139 | enum devlink_eswitch_encap_mode encap_mode; |
2140 | u8 inline_mode; | |
08f4b591 | 2141 | void *hdr; |
59bfde01 RD |
2142 | int err = 0; |
2143 | u16 mode; | |
08f4b591 OG |
2144 | |
2145 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
2146 | if (!hdr) | |
2147 | return -EMSGSIZE; | |
2148 | ||
59bfde01 RD |
2149 | err = devlink_nl_put_handle(msg, devlink); |
2150 | if (err) | |
1a6aa36b | 2151 | goto nla_put_failure; |
08f4b591 | 2152 | |
4456f61c JP |
2153 | if (ops->eswitch_mode_get) { |
2154 | err = ops->eswitch_mode_get(devlink, &mode); | |
2155 | if (err) | |
2156 | goto nla_put_failure; | |
2157 | err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode); | |
2158 | if (err) | |
2159 | goto nla_put_failure; | |
2160 | } | |
59bfde01 RD |
2161 | |
2162 | if (ops->eswitch_inline_mode_get) { | |
2163 | err = ops->eswitch_inline_mode_get(devlink, &inline_mode); | |
2164 | if (err) | |
1a6aa36b | 2165 | goto nla_put_failure; |
59bfde01 RD |
2166 | err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE, |
2167 | inline_mode); | |
2168 | if (err) | |
1a6aa36b | 2169 | goto nla_put_failure; |
59bfde01 | 2170 | } |
08f4b591 | 2171 | |
f43e9b06 RD |
2172 | if (ops->eswitch_encap_mode_get) { |
2173 | err = ops->eswitch_encap_mode_get(devlink, &encap_mode); | |
2174 | if (err) | |
2175 | goto nla_put_failure; | |
2176 | err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode); | |
2177 | if (err) | |
2178 | goto nla_put_failure; | |
2179 | } | |
2180 | ||
08f4b591 OG |
2181 | genlmsg_end(msg, hdr); |
2182 | return 0; | |
2183 | ||
1a6aa36b | 2184 | nla_put_failure: |
08f4b591 | 2185 | genlmsg_cancel(msg, hdr); |
59bfde01 | 2186 | return err; |
08f4b591 OG |
2187 | } |
2188 | ||
adf200f3 JP |
2189 | static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb, |
2190 | struct genl_info *info) | |
08f4b591 OG |
2191 | { |
2192 | struct devlink *devlink = info->user_ptr[0]; | |
08f4b591 | 2193 | struct sk_buff *msg; |
08f4b591 OG |
2194 | int err; |
2195 | ||
08f4b591 OG |
2196 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
2197 | if (!msg) | |
2198 | return -ENOMEM; | |
2199 | ||
21e3d2dd JP |
2200 | err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET, |
2201 | info->snd_portid, info->snd_seq, 0); | |
08f4b591 OG |
2202 | |
2203 | if (err) { | |
2204 | nlmsg_free(msg); | |
2205 | return err; | |
2206 | } | |
2207 | ||
2208 | return genlmsg_reply(msg, info); | |
2209 | } | |
2210 | ||
adf200f3 JP |
2211 | static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb, |
2212 | struct genl_info *info) | |
08f4b591 OG |
2213 | { |
2214 | struct devlink *devlink = info->user_ptr[0]; | |
2215 | const struct devlink_ops *ops = devlink->ops; | |
98fdbea5 LR |
2216 | enum devlink_eswitch_encap_mode encap_mode; |
2217 | u8 inline_mode; | |
59bfde01 | 2218 | int err = 0; |
f43e9b06 | 2219 | u16 mode; |
08f4b591 | 2220 | |
59bfde01 RD |
2221 | if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) { |
2222 | if (!ops->eswitch_mode_set) | |
2223 | return -EOPNOTSUPP; | |
2224 | mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]); | |
db7ff19e | 2225 | err = ops->eswitch_mode_set(devlink, mode, info->extack); |
59bfde01 RD |
2226 | if (err) |
2227 | return err; | |
2228 | } | |
08f4b591 | 2229 | |
59bfde01 RD |
2230 | if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) { |
2231 | if (!ops->eswitch_inline_mode_set) | |
2232 | return -EOPNOTSUPP; | |
2233 | inline_mode = nla_get_u8( | |
2234 | info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]); | |
db7ff19e EB |
2235 | err = ops->eswitch_inline_mode_set(devlink, inline_mode, |
2236 | info->extack); | |
59bfde01 RD |
2237 | if (err) |
2238 | return err; | |
2239 | } | |
f43e9b06 RD |
2240 | |
2241 | if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) { | |
2242 | if (!ops->eswitch_encap_mode_set) | |
2243 | return -EOPNOTSUPP; | |
2244 | encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]); | |
db7ff19e EB |
2245 | err = ops->eswitch_encap_mode_set(devlink, encap_mode, |
2246 | info->extack); | |
f43e9b06 RD |
2247 | if (err) |
2248 | return err; | |
2249 | } | |
2250 | ||
1555d204 AS |
2251 | return 0; |
2252 | } | |
2253 | ||
2254 | int devlink_dpipe_match_put(struct sk_buff *skb, | |
2255 | struct devlink_dpipe_match *match) | |
2256 | { | |
2257 | struct devlink_dpipe_header *header = match->header; | |
2258 | struct devlink_dpipe_field *field = &header->fields[match->field_id]; | |
2259 | struct nlattr *match_attr; | |
2260 | ||
ae0be8de | 2261 | match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH); |
1555d204 AS |
2262 | if (!match_attr) |
2263 | return -EMSGSIZE; | |
2264 | ||
2265 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) || | |
2266 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) || | |
2267 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
2268 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
2269 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
2270 | goto nla_put_failure; | |
2271 | ||
2272 | nla_nest_end(skb, match_attr); | |
2273 | return 0; | |
2274 | ||
2275 | nla_put_failure: | |
2276 | nla_nest_cancel(skb, match_attr); | |
2277 | return -EMSGSIZE; | |
2278 | } | |
2279 | EXPORT_SYMBOL_GPL(devlink_dpipe_match_put); | |
2280 | ||
2281 | static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table, | |
2282 | struct sk_buff *skb) | |
2283 | { | |
2284 | struct nlattr *matches_attr; | |
2285 | ||
ae0be8de MK |
2286 | matches_attr = nla_nest_start_noflag(skb, |
2287 | DEVLINK_ATTR_DPIPE_TABLE_MATCHES); | |
1555d204 AS |
2288 | if (!matches_attr) |
2289 | return -EMSGSIZE; | |
2290 | ||
2291 | if (table->table_ops->matches_dump(table->priv, skb)) | |
2292 | goto nla_put_failure; | |
2293 | ||
2294 | nla_nest_end(skb, matches_attr); | |
2295 | return 0; | |
2296 | ||
2297 | nla_put_failure: | |
2298 | nla_nest_cancel(skb, matches_attr); | |
2299 | return -EMSGSIZE; | |
2300 | } | |
2301 | ||
2302 | int devlink_dpipe_action_put(struct sk_buff *skb, | |
2303 | struct devlink_dpipe_action *action) | |
2304 | { | |
2305 | struct devlink_dpipe_header *header = action->header; | |
2306 | struct devlink_dpipe_field *field = &header->fields[action->field_id]; | |
2307 | struct nlattr *action_attr; | |
2308 | ||
ae0be8de | 2309 | action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION); |
1555d204 AS |
2310 | if (!action_attr) |
2311 | return -EMSGSIZE; | |
2312 | ||
2313 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) || | |
2314 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) || | |
2315 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
2316 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
2317 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
2318 | goto nla_put_failure; | |
2319 | ||
2320 | nla_nest_end(skb, action_attr); | |
2321 | return 0; | |
2322 | ||
2323 | nla_put_failure: | |
2324 | nla_nest_cancel(skb, action_attr); | |
2325 | return -EMSGSIZE; | |
2326 | } | |
2327 | EXPORT_SYMBOL_GPL(devlink_dpipe_action_put); | |
2328 | ||
2329 | static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table, | |
2330 | struct sk_buff *skb) | |
2331 | { | |
2332 | struct nlattr *actions_attr; | |
2333 | ||
ae0be8de MK |
2334 | actions_attr = nla_nest_start_noflag(skb, |
2335 | DEVLINK_ATTR_DPIPE_TABLE_ACTIONS); | |
1555d204 AS |
2336 | if (!actions_attr) |
2337 | return -EMSGSIZE; | |
2338 | ||
2339 | if (table->table_ops->actions_dump(table->priv, skb)) | |
2340 | goto nla_put_failure; | |
2341 | ||
2342 | nla_nest_end(skb, actions_attr); | |
2343 | return 0; | |
2344 | ||
2345 | nla_put_failure: | |
2346 | nla_nest_cancel(skb, actions_attr); | |
2347 | return -EMSGSIZE; | |
2348 | } | |
2349 | ||
2350 | static int devlink_dpipe_table_put(struct sk_buff *skb, | |
2351 | struct devlink_dpipe_table *table) | |
2352 | { | |
2353 | struct nlattr *table_attr; | |
ffd3cdcc | 2354 | u64 table_size; |
1555d204 | 2355 | |
ffd3cdcc | 2356 | table_size = table->table_ops->size_get(table->priv); |
ae0be8de | 2357 | table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE); |
1555d204 AS |
2358 | if (!table_attr) |
2359 | return -EMSGSIZE; | |
2360 | ||
2361 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) || | |
ffd3cdcc | 2362 | nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size, |
1555d204 AS |
2363 | DEVLINK_ATTR_PAD)) |
2364 | goto nla_put_failure; | |
2365 | if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED, | |
2366 | table->counters_enabled)) | |
2367 | goto nla_put_failure; | |
2368 | ||
56dc7cd0 | 2369 | if (table->resource_valid) { |
3d18e4f1 AS |
2370 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID, |
2371 | table->resource_id, DEVLINK_ATTR_PAD) || | |
2372 | nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS, | |
2373 | table->resource_units, DEVLINK_ATTR_PAD)) | |
2374 | goto nla_put_failure; | |
56dc7cd0 | 2375 | } |
1555d204 AS |
2376 | if (devlink_dpipe_matches_put(table, skb)) |
2377 | goto nla_put_failure; | |
2378 | ||
2379 | if (devlink_dpipe_actions_put(table, skb)) | |
2380 | goto nla_put_failure; | |
2381 | ||
2382 | nla_nest_end(skb, table_attr); | |
2383 | return 0; | |
2384 | ||
2385 | nla_put_failure: | |
2386 | nla_nest_cancel(skb, table_attr); | |
2387 | return -EMSGSIZE; | |
2388 | } | |
2389 | ||
2390 | static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb, | |
2391 | struct genl_info *info) | |
2392 | { | |
2393 | int err; | |
2394 | ||
2395 | if (*pskb) { | |
2396 | err = genlmsg_reply(*pskb, info); | |
2397 | if (err) | |
2398 | return err; | |
2399 | } | |
2400 | *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2401 | if (!*pskb) | |
2402 | return -ENOMEM; | |
2403 | return 0; | |
2404 | } | |
2405 | ||
2406 | static int devlink_dpipe_tables_fill(struct genl_info *info, | |
2407 | enum devlink_command cmd, int flags, | |
2408 | struct list_head *dpipe_tables, | |
2409 | const char *table_name) | |
2410 | { | |
2411 | struct devlink *devlink = info->user_ptr[0]; | |
2412 | struct devlink_dpipe_table *table; | |
2413 | struct nlattr *tables_attr; | |
2414 | struct sk_buff *skb = NULL; | |
2415 | struct nlmsghdr *nlh; | |
2416 | bool incomplete; | |
2417 | void *hdr; | |
2418 | int i; | |
2419 | int err; | |
2420 | ||
2421 | table = list_first_entry(dpipe_tables, | |
2422 | struct devlink_dpipe_table, list); | |
2423 | start_again: | |
2424 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2425 | if (err) | |
2426 | return err; | |
2427 | ||
2428 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2429 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
6044bd4a HY |
2430 | if (!hdr) { |
2431 | nlmsg_free(skb); | |
1555d204 | 2432 | return -EMSGSIZE; |
6044bd4a | 2433 | } |
1555d204 AS |
2434 | |
2435 | if (devlink_nl_put_handle(skb, devlink)) | |
2436 | goto nla_put_failure; | |
ae0be8de | 2437 | tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES); |
1555d204 AS |
2438 | if (!tables_attr) |
2439 | goto nla_put_failure; | |
2440 | ||
2441 | i = 0; | |
2442 | incomplete = false; | |
2443 | list_for_each_entry_from(table, dpipe_tables, list) { | |
2444 | if (!table_name) { | |
2445 | err = devlink_dpipe_table_put(skb, table); | |
2446 | if (err) { | |
2447 | if (!i) | |
2448 | goto err_table_put; | |
2449 | incomplete = true; | |
2450 | break; | |
2451 | } | |
2452 | } else { | |
2453 | if (!strcmp(table->name, table_name)) { | |
2454 | err = devlink_dpipe_table_put(skb, table); | |
2455 | if (err) | |
2456 | break; | |
2457 | } | |
2458 | } | |
2459 | i++; | |
2460 | } | |
2461 | ||
2462 | nla_nest_end(skb, tables_attr); | |
2463 | genlmsg_end(skb, hdr); | |
2464 | if (incomplete) | |
2465 | goto start_again; | |
2466 | ||
2467 | send_done: | |
2468 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2469 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2470 | if (!nlh) { | |
2471 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2472 | if (err) | |
7fe4d6dc | 2473 | return err; |
1555d204 AS |
2474 | goto send_done; |
2475 | } | |
2476 | ||
2477 | return genlmsg_reply(skb, info); | |
2478 | ||
2479 | nla_put_failure: | |
2480 | err = -EMSGSIZE; | |
2481 | err_table_put: | |
1555d204 AS |
2482 | nlmsg_free(skb); |
2483 | return err; | |
2484 | } | |
2485 | ||
2486 | static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb, | |
2487 | struct genl_info *info) | |
2488 | { | |
2489 | struct devlink *devlink = info->user_ptr[0]; | |
2490 | const char *table_name = NULL; | |
2491 | ||
2492 | if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]) | |
2493 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2494 | ||
2495 | return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0, | |
2496 | &devlink->dpipe_table_list, | |
2497 | table_name); | |
2498 | } | |
2499 | ||
2500 | static int devlink_dpipe_value_put(struct sk_buff *skb, | |
2501 | struct devlink_dpipe_value *value) | |
2502 | { | |
2503 | if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE, | |
2504 | value->value_size, value->value)) | |
2505 | return -EMSGSIZE; | |
2506 | if (value->mask) | |
2507 | if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK, | |
2508 | value->value_size, value->mask)) | |
2509 | return -EMSGSIZE; | |
2510 | if (value->mapping_valid) | |
2511 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING, | |
2512 | value->mapping_value)) | |
2513 | return -EMSGSIZE; | |
2514 | return 0; | |
2515 | } | |
2516 | ||
2517 | static int devlink_dpipe_action_value_put(struct sk_buff *skb, | |
2518 | struct devlink_dpipe_value *value) | |
2519 | { | |
2520 | if (!value->action) | |
2521 | return -EINVAL; | |
2522 | if (devlink_dpipe_action_put(skb, value->action)) | |
2523 | return -EMSGSIZE; | |
2524 | if (devlink_dpipe_value_put(skb, value)) | |
2525 | return -EMSGSIZE; | |
2526 | return 0; | |
2527 | } | |
2528 | ||
2529 | static int devlink_dpipe_action_values_put(struct sk_buff *skb, | |
2530 | struct devlink_dpipe_value *values, | |
2531 | unsigned int values_count) | |
2532 | { | |
2533 | struct nlattr *action_attr; | |
2534 | int i; | |
2535 | int err; | |
2536 | ||
2537 | for (i = 0; i < values_count; i++) { | |
ae0be8de MK |
2538 | action_attr = nla_nest_start_noflag(skb, |
2539 | DEVLINK_ATTR_DPIPE_ACTION_VALUE); | |
1555d204 AS |
2540 | if (!action_attr) |
2541 | return -EMSGSIZE; | |
2542 | err = devlink_dpipe_action_value_put(skb, &values[i]); | |
2543 | if (err) | |
2544 | goto err_action_value_put; | |
2545 | nla_nest_end(skb, action_attr); | |
2546 | } | |
2547 | return 0; | |
2548 | ||
2549 | err_action_value_put: | |
2550 | nla_nest_cancel(skb, action_attr); | |
2551 | return err; | |
2552 | } | |
2553 | ||
2554 | static int devlink_dpipe_match_value_put(struct sk_buff *skb, | |
2555 | struct devlink_dpipe_value *value) | |
2556 | { | |
2557 | if (!value->match) | |
2558 | return -EINVAL; | |
2559 | if (devlink_dpipe_match_put(skb, value->match)) | |
2560 | return -EMSGSIZE; | |
2561 | if (devlink_dpipe_value_put(skb, value)) | |
2562 | return -EMSGSIZE; | |
2563 | return 0; | |
2564 | } | |
2565 | ||
2566 | static int devlink_dpipe_match_values_put(struct sk_buff *skb, | |
2567 | struct devlink_dpipe_value *values, | |
2568 | unsigned int values_count) | |
2569 | { | |
2570 | struct nlattr *match_attr; | |
2571 | int i; | |
2572 | int err; | |
2573 | ||
2574 | for (i = 0; i < values_count; i++) { | |
ae0be8de MK |
2575 | match_attr = nla_nest_start_noflag(skb, |
2576 | DEVLINK_ATTR_DPIPE_MATCH_VALUE); | |
1555d204 AS |
2577 | if (!match_attr) |
2578 | return -EMSGSIZE; | |
2579 | err = devlink_dpipe_match_value_put(skb, &values[i]); | |
2580 | if (err) | |
2581 | goto err_match_value_put; | |
2582 | nla_nest_end(skb, match_attr); | |
2583 | } | |
2584 | return 0; | |
2585 | ||
2586 | err_match_value_put: | |
2587 | nla_nest_cancel(skb, match_attr); | |
2588 | return err; | |
2589 | } | |
2590 | ||
2591 | static int devlink_dpipe_entry_put(struct sk_buff *skb, | |
2592 | struct devlink_dpipe_entry *entry) | |
2593 | { | |
2594 | struct nlattr *entry_attr, *matches_attr, *actions_attr; | |
2595 | int err; | |
2596 | ||
ae0be8de | 2597 | entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY); |
1555d204 AS |
2598 | if (!entry_attr) |
2599 | return -EMSGSIZE; | |
2600 | ||
2601 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index, | |
2602 | DEVLINK_ATTR_PAD)) | |
2603 | goto nla_put_failure; | |
2604 | if (entry->counter_valid) | |
2605 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER, | |
2606 | entry->counter, DEVLINK_ATTR_PAD)) | |
2607 | goto nla_put_failure; | |
2608 | ||
ae0be8de MK |
2609 | matches_attr = nla_nest_start_noflag(skb, |
2610 | DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES); | |
1555d204 AS |
2611 | if (!matches_attr) |
2612 | goto nla_put_failure; | |
2613 | ||
2614 | err = devlink_dpipe_match_values_put(skb, entry->match_values, | |
2615 | entry->match_values_count); | |
2616 | if (err) { | |
2617 | nla_nest_cancel(skb, matches_attr); | |
2618 | goto err_match_values_put; | |
2619 | } | |
2620 | nla_nest_end(skb, matches_attr); | |
2621 | ||
ae0be8de MK |
2622 | actions_attr = nla_nest_start_noflag(skb, |
2623 | DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES); | |
1555d204 AS |
2624 | if (!actions_attr) |
2625 | goto nla_put_failure; | |
2626 | ||
2627 | err = devlink_dpipe_action_values_put(skb, entry->action_values, | |
2628 | entry->action_values_count); | |
2629 | if (err) { | |
2630 | nla_nest_cancel(skb, actions_attr); | |
2631 | goto err_action_values_put; | |
2632 | } | |
2633 | nla_nest_end(skb, actions_attr); | |
59bfde01 | 2634 | |
1555d204 | 2635 | nla_nest_end(skb, entry_attr); |
59bfde01 | 2636 | return 0; |
1555d204 AS |
2637 | |
2638 | nla_put_failure: | |
2639 | err = -EMSGSIZE; | |
2640 | err_match_values_put: | |
2641 | err_action_values_put: | |
2642 | nla_nest_cancel(skb, entry_attr); | |
2643 | return err; | |
2644 | } | |
2645 | ||
2646 | static struct devlink_dpipe_table * | |
2647 | devlink_dpipe_table_find(struct list_head *dpipe_tables, | |
2eb51c75 | 2648 | const char *table_name, struct devlink *devlink) |
1555d204 AS |
2649 | { |
2650 | struct devlink_dpipe_table *table; | |
2eb51c75 MB |
2651 | list_for_each_entry_rcu(table, dpipe_tables, list, |
2652 | lockdep_is_held(&devlink->lock)) { | |
1555d204 AS |
2653 | if (!strcmp(table->name, table_name)) |
2654 | return table; | |
2655 | } | |
2656 | return NULL; | |
2657 | } | |
2658 | ||
2659 | int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx) | |
2660 | { | |
2661 | struct devlink *devlink; | |
2662 | int err; | |
2663 | ||
2664 | err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb, | |
2665 | dump_ctx->info); | |
2666 | if (err) | |
2667 | return err; | |
2668 | ||
2669 | dump_ctx->hdr = genlmsg_put(dump_ctx->skb, | |
2670 | dump_ctx->info->snd_portid, | |
2671 | dump_ctx->info->snd_seq, | |
2672 | &devlink_nl_family, NLM_F_MULTI, | |
2673 | dump_ctx->cmd); | |
2674 | if (!dump_ctx->hdr) | |
2675 | goto nla_put_failure; | |
2676 | ||
2677 | devlink = dump_ctx->info->user_ptr[0]; | |
2678 | if (devlink_nl_put_handle(dump_ctx->skb, devlink)) | |
2679 | goto nla_put_failure; | |
ae0be8de MK |
2680 | dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb, |
2681 | DEVLINK_ATTR_DPIPE_ENTRIES); | |
1555d204 AS |
2682 | if (!dump_ctx->nest) |
2683 | goto nla_put_failure; | |
2684 | return 0; | |
2685 | ||
2686 | nla_put_failure: | |
1555d204 AS |
2687 | nlmsg_free(dump_ctx->skb); |
2688 | return -EMSGSIZE; | |
2689 | } | |
2690 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare); | |
2691 | ||
2692 | int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx, | |
2693 | struct devlink_dpipe_entry *entry) | |
2694 | { | |
2695 | return devlink_dpipe_entry_put(dump_ctx->skb, entry); | |
2696 | } | |
2697 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append); | |
2698 | ||
2699 | int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx) | |
2700 | { | |
2701 | nla_nest_end(dump_ctx->skb, dump_ctx->nest); | |
2702 | genlmsg_end(dump_ctx->skb, dump_ctx->hdr); | |
2703 | return 0; | |
2704 | } | |
2705 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close); | |
2706 | ||
35807324 AS |
2707 | void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry) |
2708 | ||
2709 | { | |
2710 | unsigned int value_count, value_index; | |
2711 | struct devlink_dpipe_value *value; | |
2712 | ||
2713 | value = entry->action_values; | |
2714 | value_count = entry->action_values_count; | |
2715 | for (value_index = 0; value_index < value_count; value_index++) { | |
2716 | kfree(value[value_index].value); | |
2717 | kfree(value[value_index].mask); | |
2718 | } | |
2719 | ||
2720 | value = entry->match_values; | |
2721 | value_count = entry->match_values_count; | |
2722 | for (value_index = 0; value_index < value_count; value_index++) { | |
2723 | kfree(value[value_index].value); | |
2724 | kfree(value[value_index].mask); | |
2725 | } | |
2726 | } | |
2727 | EXPORT_SYMBOL(devlink_dpipe_entry_clear); | |
2728 | ||
1555d204 AS |
2729 | static int devlink_dpipe_entries_fill(struct genl_info *info, |
2730 | enum devlink_command cmd, int flags, | |
2731 | struct devlink_dpipe_table *table) | |
2732 | { | |
2733 | struct devlink_dpipe_dump_ctx dump_ctx; | |
2734 | struct nlmsghdr *nlh; | |
2735 | int err; | |
2736 | ||
2737 | dump_ctx.skb = NULL; | |
2738 | dump_ctx.cmd = cmd; | |
2739 | dump_ctx.info = info; | |
2740 | ||
2741 | err = table->table_ops->entries_dump(table->priv, | |
2742 | table->counters_enabled, | |
2743 | &dump_ctx); | |
2744 | if (err) | |
7fe4d6dc | 2745 | return err; |
1555d204 AS |
2746 | |
2747 | send_done: | |
2748 | nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq, | |
2749 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2750 | if (!nlh) { | |
2751 | err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info); | |
2752 | if (err) | |
7fe4d6dc | 2753 | return err; |
1555d204 AS |
2754 | goto send_done; |
2755 | } | |
2756 | return genlmsg_reply(dump_ctx.skb, info); | |
1555d204 AS |
2757 | } |
2758 | ||
2759 | static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb, | |
2760 | struct genl_info *info) | |
2761 | { | |
2762 | struct devlink *devlink = info->user_ptr[0]; | |
2763 | struct devlink_dpipe_table *table; | |
2764 | const char *table_name; | |
2765 | ||
2766 | if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]) | |
2767 | return -EINVAL; | |
2768 | ||
2769 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2770 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 2771 | table_name, devlink); |
1555d204 AS |
2772 | if (!table) |
2773 | return -EINVAL; | |
2774 | ||
2775 | if (!table->table_ops->entries_dump) | |
2776 | return -EINVAL; | |
2777 | ||
2778 | return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET, | |
2779 | 0, table); | |
2780 | } | |
2781 | ||
2782 | static int devlink_dpipe_fields_put(struct sk_buff *skb, | |
2783 | const struct devlink_dpipe_header *header) | |
2784 | { | |
2785 | struct devlink_dpipe_field *field; | |
2786 | struct nlattr *field_attr; | |
2787 | int i; | |
2788 | ||
2789 | for (i = 0; i < header->fields_count; i++) { | |
2790 | field = &header->fields[i]; | |
ae0be8de MK |
2791 | field_attr = nla_nest_start_noflag(skb, |
2792 | DEVLINK_ATTR_DPIPE_FIELD); | |
1555d204 AS |
2793 | if (!field_attr) |
2794 | return -EMSGSIZE; | |
2795 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) || | |
2796 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
2797 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) || | |
2798 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type)) | |
2799 | goto nla_put_failure; | |
2800 | nla_nest_end(skb, field_attr); | |
2801 | } | |
2802 | return 0; | |
2803 | ||
2804 | nla_put_failure: | |
2805 | nla_nest_cancel(skb, field_attr); | |
2806 | return -EMSGSIZE; | |
2807 | } | |
2808 | ||
2809 | static int devlink_dpipe_header_put(struct sk_buff *skb, | |
2810 | struct devlink_dpipe_header *header) | |
2811 | { | |
2812 | struct nlattr *fields_attr, *header_attr; | |
2813 | int err; | |
2814 | ||
ae0be8de | 2815 | header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER); |
cb6bf9cf | 2816 | if (!header_attr) |
1555d204 AS |
2817 | return -EMSGSIZE; |
2818 | ||
2819 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) || | |
2820 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
2821 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
2822 | goto nla_put_failure; | |
2823 | ||
ae0be8de MK |
2824 | fields_attr = nla_nest_start_noflag(skb, |
2825 | DEVLINK_ATTR_DPIPE_HEADER_FIELDS); | |
1555d204 AS |
2826 | if (!fields_attr) |
2827 | goto nla_put_failure; | |
2828 | ||
2829 | err = devlink_dpipe_fields_put(skb, header); | |
2830 | if (err) { | |
2831 | nla_nest_cancel(skb, fields_attr); | |
2832 | goto nla_put_failure; | |
2833 | } | |
2834 | nla_nest_end(skb, fields_attr); | |
2835 | nla_nest_end(skb, header_attr); | |
2836 | return 0; | |
2837 | ||
2838 | nla_put_failure: | |
2839 | err = -EMSGSIZE; | |
2840 | nla_nest_cancel(skb, header_attr); | |
2841 | return err; | |
2842 | } | |
2843 | ||
2844 | static int devlink_dpipe_headers_fill(struct genl_info *info, | |
2845 | enum devlink_command cmd, int flags, | |
2846 | struct devlink_dpipe_headers * | |
2847 | dpipe_headers) | |
2848 | { | |
2849 | struct devlink *devlink = info->user_ptr[0]; | |
2850 | struct nlattr *headers_attr; | |
2851 | struct sk_buff *skb = NULL; | |
2852 | struct nlmsghdr *nlh; | |
2853 | void *hdr; | |
2854 | int i, j; | |
2855 | int err; | |
2856 | ||
2857 | i = 0; | |
2858 | start_again: | |
2859 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2860 | if (err) | |
2861 | return err; | |
2862 | ||
2863 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2864 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
6044bd4a HY |
2865 | if (!hdr) { |
2866 | nlmsg_free(skb); | |
1555d204 | 2867 | return -EMSGSIZE; |
6044bd4a | 2868 | } |
1555d204 AS |
2869 | |
2870 | if (devlink_nl_put_handle(skb, devlink)) | |
2871 | goto nla_put_failure; | |
ae0be8de | 2872 | headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS); |
1555d204 AS |
2873 | if (!headers_attr) |
2874 | goto nla_put_failure; | |
2875 | ||
2876 | j = 0; | |
2877 | for (; i < dpipe_headers->headers_count; i++) { | |
2878 | err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]); | |
2879 | if (err) { | |
2880 | if (!j) | |
2881 | goto err_table_put; | |
2882 | break; | |
2883 | } | |
2884 | j++; | |
2885 | } | |
2886 | nla_nest_end(skb, headers_attr); | |
2887 | genlmsg_end(skb, hdr); | |
2888 | if (i != dpipe_headers->headers_count) | |
2889 | goto start_again; | |
2890 | ||
2891 | send_done: | |
2892 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2893 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2894 | if (!nlh) { | |
2895 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2896 | if (err) | |
7fe4d6dc | 2897 | return err; |
1555d204 AS |
2898 | goto send_done; |
2899 | } | |
2900 | return genlmsg_reply(skb, info); | |
2901 | ||
2902 | nla_put_failure: | |
2903 | err = -EMSGSIZE; | |
2904 | err_table_put: | |
1555d204 AS |
2905 | nlmsg_free(skb); |
2906 | return err; | |
2907 | } | |
2908 | ||
2909 | static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb, | |
2910 | struct genl_info *info) | |
2911 | { | |
2912 | struct devlink *devlink = info->user_ptr[0]; | |
2913 | ||
2914 | if (!devlink->dpipe_headers) | |
2915 | return -EOPNOTSUPP; | |
2916 | return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET, | |
2917 | 0, devlink->dpipe_headers); | |
2918 | } | |
2919 | ||
2920 | static int devlink_dpipe_table_counters_set(struct devlink *devlink, | |
2921 | const char *table_name, | |
2922 | bool enable) | |
2923 | { | |
2924 | struct devlink_dpipe_table *table; | |
2925 | ||
2926 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 2927 | table_name, devlink); |
1555d204 AS |
2928 | if (!table) |
2929 | return -EINVAL; | |
2930 | ||
2931 | if (table->counter_control_extern) | |
2932 | return -EOPNOTSUPP; | |
2933 | ||
2934 | if (!(table->counters_enabled ^ enable)) | |
2935 | return 0; | |
2936 | ||
2937 | table->counters_enabled = enable; | |
2938 | if (table->table_ops->counters_set_update) | |
2939 | table->table_ops->counters_set_update(table->priv, enable); | |
2940 | return 0; | |
2941 | } | |
2942 | ||
2943 | static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb, | |
2944 | struct genl_info *info) | |
2945 | { | |
2946 | struct devlink *devlink = info->user_ptr[0]; | |
2947 | const char *table_name; | |
2948 | bool counters_enable; | |
2949 | ||
2950 | if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] || | |
2951 | !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]) | |
2952 | return -EINVAL; | |
2953 | ||
2954 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2955 | counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]); | |
2956 | ||
2957 | return devlink_dpipe_table_counters_set(devlink, table_name, | |
2958 | counters_enable); | |
08f4b591 OG |
2959 | } |
2960 | ||
43dd7512 | 2961 | static struct devlink_resource * |
d9f9b9a4 AS |
2962 | devlink_resource_find(struct devlink *devlink, |
2963 | struct devlink_resource *resource, u64 resource_id) | |
2964 | { | |
2965 | struct list_head *resource_list; | |
2966 | ||
2967 | if (resource) | |
2968 | resource_list = &resource->resource_list; | |
2969 | else | |
2970 | resource_list = &devlink->resource_list; | |
2971 | ||
2972 | list_for_each_entry(resource, resource_list, list) { | |
2973 | struct devlink_resource *child_resource; | |
2974 | ||
2975 | if (resource->id == resource_id) | |
2976 | return resource; | |
2977 | ||
2978 | child_resource = devlink_resource_find(devlink, resource, | |
2979 | resource_id); | |
2980 | if (child_resource) | |
2981 | return child_resource; | |
2982 | } | |
2983 | return NULL; | |
2984 | } | |
2985 | ||
43dd7512 WY |
2986 | static void |
2987 | devlink_resource_validate_children(struct devlink_resource *resource) | |
d9f9b9a4 AS |
2988 | { |
2989 | struct devlink_resource *child_resource; | |
2990 | bool size_valid = true; | |
2991 | u64 parts_size = 0; | |
2992 | ||
2993 | if (list_empty(&resource->resource_list)) | |
2994 | goto out; | |
2995 | ||
2996 | list_for_each_entry(child_resource, &resource->resource_list, list) | |
2997 | parts_size += child_resource->size_new; | |
2998 | ||
b9d17175 | 2999 | if (parts_size > resource->size_new) |
d9f9b9a4 AS |
3000 | size_valid = false; |
3001 | out: | |
3002 | resource->size_valid = size_valid; | |
3003 | } | |
3004 | ||
cc944ead AS |
3005 | static int |
3006 | devlink_resource_validate_size(struct devlink_resource *resource, u64 size, | |
3007 | struct netlink_ext_ack *extack) | |
3008 | { | |
3009 | u64 reminder; | |
3010 | int err = 0; | |
3011 | ||
0f3e9c97 | 3012 | if (size > resource->size_params.size_max) { |
cc944ead AS |
3013 | NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum"); |
3014 | err = -EINVAL; | |
3015 | } | |
3016 | ||
0f3e9c97 | 3017 | if (size < resource->size_params.size_min) { |
cc944ead AS |
3018 | NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum"); |
3019 | err = -EINVAL; | |
3020 | } | |
3021 | ||
0f3e9c97 | 3022 | div64_u64_rem(size, resource->size_params.size_granularity, &reminder); |
cc944ead AS |
3023 | if (reminder) { |
3024 | NL_SET_ERR_MSG_MOD(extack, "Wrong granularity"); | |
3025 | err = -EINVAL; | |
3026 | } | |
3027 | ||
3028 | return err; | |
3029 | } | |
3030 | ||
d9f9b9a4 AS |
3031 | static int devlink_nl_cmd_resource_set(struct sk_buff *skb, |
3032 | struct genl_info *info) | |
3033 | { | |
3034 | struct devlink *devlink = info->user_ptr[0]; | |
3035 | struct devlink_resource *resource; | |
3036 | u64 resource_id; | |
3037 | u64 size; | |
3038 | int err; | |
3039 | ||
3040 | if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] || | |
3041 | !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]) | |
3042 | return -EINVAL; | |
3043 | resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]); | |
3044 | ||
3045 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
3046 | if (!resource) | |
3047 | return -EINVAL; | |
3048 | ||
d9f9b9a4 | 3049 | size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]); |
cc944ead | 3050 | err = devlink_resource_validate_size(resource, size, info->extack); |
d9f9b9a4 AS |
3051 | if (err) |
3052 | return err; | |
3053 | ||
3054 | resource->size_new = size; | |
3055 | devlink_resource_validate_children(resource); | |
3056 | if (resource->parent) | |
3057 | devlink_resource_validate_children(resource->parent); | |
3058 | return 0; | |
3059 | } | |
3060 | ||
3d18e4f1 | 3061 | static int |
d9f9b9a4 AS |
3062 | devlink_resource_size_params_put(struct devlink_resource *resource, |
3063 | struct sk_buff *skb) | |
3064 | { | |
3065 | struct devlink_resource_size_params *size_params; | |
3066 | ||
77d27096 | 3067 | size_params = &resource->size_params; |
3d18e4f1 AS |
3068 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN, |
3069 | size_params->size_granularity, DEVLINK_ATTR_PAD) || | |
3070 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX, | |
3071 | size_params->size_max, DEVLINK_ATTR_PAD) || | |
3072 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN, | |
3073 | size_params->size_min, DEVLINK_ATTR_PAD) || | |
3074 | nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit)) | |
3075 | return -EMSGSIZE; | |
3076 | return 0; | |
d9f9b9a4 AS |
3077 | } |
3078 | ||
fc56be47 JP |
3079 | static int devlink_resource_occ_put(struct devlink_resource *resource, |
3080 | struct sk_buff *skb) | |
3081 | { | |
3082 | if (!resource->occ_get) | |
3083 | return 0; | |
3084 | return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC, | |
3085 | resource->occ_get(resource->occ_get_priv), | |
3086 | DEVLINK_ATTR_PAD); | |
3087 | } | |
3088 | ||
d9f9b9a4 AS |
3089 | static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb, |
3090 | struct devlink_resource *resource) | |
3091 | { | |
3092 | struct devlink_resource *child_resource; | |
3093 | struct nlattr *child_resource_attr; | |
3094 | struct nlattr *resource_attr; | |
3095 | ||
ae0be8de | 3096 | resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE); |
d9f9b9a4 AS |
3097 | if (!resource_attr) |
3098 | return -EMSGSIZE; | |
3099 | ||
3100 | if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) || | |
3101 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size, | |
3102 | DEVLINK_ATTR_PAD) || | |
3103 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id, | |
3104 | DEVLINK_ATTR_PAD)) | |
3105 | goto nla_put_failure; | |
3106 | if (resource->size != resource->size_new) | |
3107 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW, | |
3108 | resource->size_new, DEVLINK_ATTR_PAD); | |
fc56be47 JP |
3109 | if (devlink_resource_occ_put(resource, skb)) |
3110 | goto nla_put_failure; | |
3d18e4f1 AS |
3111 | if (devlink_resource_size_params_put(resource, skb)) |
3112 | goto nla_put_failure; | |
d9f9b9a4 AS |
3113 | if (list_empty(&resource->resource_list)) |
3114 | goto out; | |
3115 | ||
3116 | if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID, | |
3117 | resource->size_valid)) | |
3118 | goto nla_put_failure; | |
3119 | ||
ae0be8de MK |
3120 | child_resource_attr = nla_nest_start_noflag(skb, |
3121 | DEVLINK_ATTR_RESOURCE_LIST); | |
d9f9b9a4 AS |
3122 | if (!child_resource_attr) |
3123 | goto nla_put_failure; | |
3124 | ||
3125 | list_for_each_entry(child_resource, &resource->resource_list, list) { | |
3126 | if (devlink_resource_put(devlink, skb, child_resource)) | |
3127 | goto resource_put_failure; | |
3128 | } | |
3129 | ||
3130 | nla_nest_end(skb, child_resource_attr); | |
3131 | out: | |
3132 | nla_nest_end(skb, resource_attr); | |
3133 | return 0; | |
3134 | ||
3135 | resource_put_failure: | |
3136 | nla_nest_cancel(skb, child_resource_attr); | |
3137 | nla_put_failure: | |
3138 | nla_nest_cancel(skb, resource_attr); | |
3139 | return -EMSGSIZE; | |
3140 | } | |
3141 | ||
3142 | static int devlink_resource_fill(struct genl_info *info, | |
3143 | enum devlink_command cmd, int flags) | |
3144 | { | |
3145 | struct devlink *devlink = info->user_ptr[0]; | |
3146 | struct devlink_resource *resource; | |
3147 | struct nlattr *resources_attr; | |
3148 | struct sk_buff *skb = NULL; | |
3149 | struct nlmsghdr *nlh; | |
3150 | bool incomplete; | |
3151 | void *hdr; | |
3152 | int i; | |
3153 | int err; | |
3154 | ||
3155 | resource = list_first_entry(&devlink->resource_list, | |
3156 | struct devlink_resource, list); | |
3157 | start_again: | |
3158 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
3159 | if (err) | |
3160 | return err; | |
3161 | ||
3162 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
3163 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
3164 | if (!hdr) { | |
3165 | nlmsg_free(skb); | |
3166 | return -EMSGSIZE; | |
3167 | } | |
3168 | ||
3169 | if (devlink_nl_put_handle(skb, devlink)) | |
3170 | goto nla_put_failure; | |
3171 | ||
ae0be8de MK |
3172 | resources_attr = nla_nest_start_noflag(skb, |
3173 | DEVLINK_ATTR_RESOURCE_LIST); | |
d9f9b9a4 AS |
3174 | if (!resources_attr) |
3175 | goto nla_put_failure; | |
3176 | ||
3177 | incomplete = false; | |
3178 | i = 0; | |
3179 | list_for_each_entry_from(resource, &devlink->resource_list, list) { | |
3180 | err = devlink_resource_put(devlink, skb, resource); | |
3181 | if (err) { | |
3182 | if (!i) | |
3183 | goto err_resource_put; | |
3184 | incomplete = true; | |
3185 | break; | |
3186 | } | |
3187 | i++; | |
3188 | } | |
3189 | nla_nest_end(skb, resources_attr); | |
3190 | genlmsg_end(skb, hdr); | |
3191 | if (incomplete) | |
3192 | goto start_again; | |
3193 | send_done: | |
3194 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
3195 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
3196 | if (!nlh) { | |
3197 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
3198 | if (err) | |
83fe9a96 | 3199 | return err; |
d9f9b9a4 AS |
3200 | goto send_done; |
3201 | } | |
3202 | return genlmsg_reply(skb, info); | |
3203 | ||
3204 | nla_put_failure: | |
3205 | err = -EMSGSIZE; | |
3206 | err_resource_put: | |
d9f9b9a4 AS |
3207 | nlmsg_free(skb); |
3208 | return err; | |
3209 | } | |
3210 | ||
3211 | static int devlink_nl_cmd_resource_dump(struct sk_buff *skb, | |
3212 | struct genl_info *info) | |
3213 | { | |
3214 | struct devlink *devlink = info->user_ptr[0]; | |
3215 | ||
3216 | if (list_empty(&devlink->resource_list)) | |
3217 | return -EOPNOTSUPP; | |
3218 | ||
3219 | return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0); | |
3220 | } | |
3221 | ||
2d8dc5bb AS |
3222 | static int |
3223 | devlink_resources_validate(struct devlink *devlink, | |
3224 | struct devlink_resource *resource, | |
3225 | struct genl_info *info) | |
3226 | { | |
3227 | struct list_head *resource_list; | |
3228 | int err = 0; | |
3229 | ||
3230 | if (resource) | |
3231 | resource_list = &resource->resource_list; | |
3232 | else | |
3233 | resource_list = &devlink->resource_list; | |
3234 | ||
3235 | list_for_each_entry(resource, resource_list, list) { | |
3236 | if (!resource->size_valid) | |
3237 | return -EINVAL; | |
3238 | err = devlink_resources_validate(devlink, resource, info); | |
3239 | if (err) | |
3240 | return err; | |
3241 | } | |
3242 | return err; | |
3243 | } | |
3244 | ||
070c63f2 JP |
3245 | static struct net *devlink_netns_get(struct sk_buff *skb, |
3246 | struct genl_info *info) | |
3247 | { | |
3248 | struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID]; | |
3249 | struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD]; | |
3250 | struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID]; | |
3251 | struct net *net; | |
3252 | ||
3253 | if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) { | |
054eae82 | 3254 | NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified"); |
070c63f2 JP |
3255 | return ERR_PTR(-EINVAL); |
3256 | } | |
3257 | ||
3258 | if (netns_pid_attr) { | |
3259 | net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr)); | |
3260 | } else if (netns_fd_attr) { | |
3261 | net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr)); | |
3262 | } else if (netns_id_attr) { | |
3263 | net = get_net_ns_by_id(sock_net(skb->sk), | |
3264 | nla_get_u32(netns_id_attr)); | |
3265 | if (!net) | |
3266 | net = ERR_PTR(-EINVAL); | |
3267 | } else { | |
3268 | WARN_ON(1); | |
3269 | net = ERR_PTR(-EINVAL); | |
3270 | } | |
3271 | if (IS_ERR(net)) { | |
054eae82 | 3272 | NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace"); |
070c63f2 JP |
3273 | return ERR_PTR(-EINVAL); |
3274 | } | |
3275 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { | |
3276 | put_net(net); | |
3277 | return ERR_PTR(-EPERM); | |
3278 | } | |
3279 | return net; | |
3280 | } | |
3281 | ||
3282 | static void devlink_param_notify(struct devlink *devlink, | |
3283 | unsigned int port_index, | |
3284 | struct devlink_param_item *param_item, | |
3285 | enum devlink_command cmd); | |
3286 | ||
3287 | static void devlink_reload_netns_change(struct devlink *devlink, | |
3288 | struct net *dest_net) | |
3289 | { | |
3290 | struct devlink_param_item *param_item; | |
3291 | ||
3292 | /* Userspace needs to be notified about devlink objects | |
3293 | * removed from original and entering new network namespace. | |
3294 | * The rest of the devlink objects are re-created during | |
3295 | * reload process so the notifications are generated separatelly. | |
3296 | */ | |
3297 | ||
3298 | list_for_each_entry(param_item, &devlink->param_list, list) | |
3299 | devlink_param_notify(devlink, 0, param_item, | |
3300 | DEVLINK_CMD_PARAM_DEL); | |
3301 | devlink_notify(devlink, DEVLINK_CMD_DEL); | |
3302 | ||
8273fd84 | 3303 | __devlink_net_set(devlink, dest_net); |
070c63f2 JP |
3304 | |
3305 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
3306 | list_for_each_entry(param_item, &devlink->param_list, list) | |
3307 | devlink_param_notify(devlink, 0, param_item, | |
3308 | DEVLINK_CMD_PARAM_NEW); | |
3309 | } | |
3310 | ||
69d56e0e | 3311 | static bool devlink_reload_supported(const struct devlink_ops *ops) |
97691069 | 3312 | { |
69d56e0e | 3313 | return ops->reload_down && ops->reload_up; |
97691069 JP |
3314 | } |
3315 | ||
2670ac26 JP |
3316 | static void devlink_reload_failed_set(struct devlink *devlink, |
3317 | bool reload_failed) | |
3318 | { | |
3319 | if (devlink->reload_failed == reload_failed) | |
3320 | return; | |
3321 | devlink->reload_failed = reload_failed; | |
3322 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
3323 | } | |
3324 | ||
3325 | bool devlink_is_reload_failed(const struct devlink *devlink) | |
3326 | { | |
3327 | return devlink->reload_failed; | |
3328 | } | |
3329 | EXPORT_SYMBOL_GPL(devlink_is_reload_failed); | |
3330 | ||
a254c264 MS |
3331 | static void |
3332 | __devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats, | |
3333 | enum devlink_reload_limit limit, u32 actions_performed) | |
3334 | { | |
3335 | unsigned long actions = actions_performed; | |
3336 | int stat_idx; | |
3337 | int action; | |
3338 | ||
3339 | for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) { | |
3340 | stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action; | |
3341 | reload_stats[stat_idx]++; | |
3342 | } | |
3343 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
3344 | } | |
3345 | ||
3346 | static void | |
3347 | devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit, | |
3348 | u32 actions_performed) | |
3349 | { | |
3350 | __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit, | |
3351 | actions_performed); | |
3352 | } | |
3353 | ||
77069ba2 MS |
3354 | /** |
3355 | * devlink_remote_reload_actions_performed - Update devlink on reload actions | |
3356 | * performed which are not a direct result of devlink reload call. | |
3357 | * | |
3358 | * This should be called by a driver after performing reload actions in case it was not | |
3359 | * a result of devlink reload call. For example fw_activate was performed as a result | |
3360 | * of devlink reload triggered fw_activate on another host. | |
3361 | * The motivation for this function is to keep data on reload actions performed on this | |
3362 | * function whether it was done due to direct devlink reload call or not. | |
3363 | * | |
3364 | * @devlink: devlink | |
3365 | * @limit: reload limit | |
3366 | * @actions_performed: bitmask of actions performed | |
3367 | */ | |
3368 | void devlink_remote_reload_actions_performed(struct devlink *devlink, | |
3369 | enum devlink_reload_limit limit, | |
3370 | u32 actions_performed) | |
3371 | { | |
3372 | if (WARN_ON(!actions_performed || | |
3373 | actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) || | |
3374 | actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) || | |
3375 | limit > DEVLINK_RELOAD_LIMIT_MAX)) | |
3376 | return; | |
3377 | ||
3378 | __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit, | |
3379 | actions_performed); | |
3380 | } | |
3381 | EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed); | |
3382 | ||
070c63f2 | 3383 | static int devlink_reload(struct devlink *devlink, struct net *dest_net, |
dc64cc7c MS |
3384 | enum devlink_reload_action action, enum devlink_reload_limit limit, |
3385 | u32 *actions_performed, struct netlink_ext_ack *extack) | |
070c63f2 | 3386 | { |
77069ba2 | 3387 | u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE]; |
070c63f2 JP |
3388 | int err; |
3389 | ||
a0c76345 JP |
3390 | if (!devlink->reload_enabled) |
3391 | return -EOPNOTSUPP; | |
3392 | ||
77069ba2 MS |
3393 | memcpy(remote_reload_stats, devlink->stats.remote_reload_stats, |
3394 | sizeof(remote_reload_stats)); | |
dc64cc7c | 3395 | err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack); |
070c63f2 JP |
3396 | if (err) |
3397 | return err; | |
3398 | ||
3399 | if (dest_net && !net_eq(dest_net, devlink_net(devlink))) | |
3400 | devlink_reload_netns_change(devlink, dest_net); | |
3401 | ||
dc64cc7c | 3402 | err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack); |
070c63f2 | 3403 | devlink_reload_failed_set(devlink, !!err); |
ccdf0721 MS |
3404 | if (err) |
3405 | return err; | |
3406 | ||
3407 | WARN_ON(!(*actions_performed & BIT(action))); | |
77069ba2 MS |
3408 | /* Catch driver on updating the remote action within devlink reload */ |
3409 | WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats, | |
3410 | sizeof(remote_reload_stats))); | |
a254c264 | 3411 | devlink_reload_stats_update(devlink, limit, *actions_performed); |
ccdf0721 MS |
3412 | return 0; |
3413 | } | |
3414 | ||
3415 | static int | |
3416 | devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed, | |
3417 | enum devlink_command cmd, struct genl_info *info) | |
3418 | { | |
3419 | struct sk_buff *msg; | |
3420 | void *hdr; | |
3421 | ||
3422 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3423 | if (!msg) | |
3424 | return -ENOMEM; | |
3425 | ||
3426 | hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd); | |
3427 | if (!hdr) | |
3428 | goto free_msg; | |
3429 | ||
3430 | if (devlink_nl_put_handle(msg, devlink)) | |
3431 | goto nla_put_failure; | |
3432 | ||
3433 | if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed, | |
3434 | actions_performed)) | |
3435 | goto nla_put_failure; | |
3436 | genlmsg_end(msg, hdr); | |
3437 | ||
3438 | return genlmsg_reply(msg, info); | |
3439 | ||
3440 | nla_put_failure: | |
3441 | genlmsg_cancel(msg, hdr); | |
3442 | free_msg: | |
3443 | nlmsg_free(msg); | |
3444 | return -EMSGSIZE; | |
070c63f2 JP |
3445 | } |
3446 | ||
2d8dc5bb AS |
3447 | static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info) |
3448 | { | |
3449 | struct devlink *devlink = info->user_ptr[0]; | |
ccdf0721 | 3450 | enum devlink_reload_action action; |
dc64cc7c | 3451 | enum devlink_reload_limit limit; |
070c63f2 | 3452 | struct net *dest_net = NULL; |
ccdf0721 | 3453 | u32 actions_performed; |
2d8dc5bb AS |
3454 | int err; |
3455 | ||
69d56e0e | 3456 | if (!devlink_reload_supported(devlink->ops)) |
2d8dc5bb AS |
3457 | return -EOPNOTSUPP; |
3458 | ||
3459 | err = devlink_resources_validate(devlink, NULL, info); | |
3460 | if (err) { | |
3461 | NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed"); | |
3462 | return err; | |
3463 | } | |
070c63f2 JP |
3464 | |
3465 | if (info->attrs[DEVLINK_ATTR_NETNS_PID] || | |
3466 | info->attrs[DEVLINK_ATTR_NETNS_FD] || | |
3467 | info->attrs[DEVLINK_ATTR_NETNS_ID]) { | |
3468 | dest_net = devlink_netns_get(skb, info); | |
3469 | if (IS_ERR(dest_net)) | |
3470 | return PTR_ERR(dest_net); | |
3471 | } | |
3472 | ||
ccdf0721 MS |
3473 | if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION]) |
3474 | action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]); | |
3475 | else | |
3476 | action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT; | |
3477 | ||
3478 | if (!devlink_reload_action_is_supported(devlink, action)) { | |
3479 | NL_SET_ERR_MSG_MOD(info->extack, | |
3480 | "Requested reload action is not supported by the driver"); | |
3481 | return -EOPNOTSUPP; | |
3482 | } | |
3483 | ||
dc64cc7c MS |
3484 | limit = DEVLINK_RELOAD_LIMIT_UNSPEC; |
3485 | if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) { | |
3486 | struct nla_bitfield32 limits; | |
3487 | u32 limits_selected; | |
3488 | ||
3489 | limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]); | |
3490 | limits_selected = limits.value & limits.selector; | |
3491 | if (!limits_selected) { | |
3492 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected"); | |
3493 | return -EINVAL; | |
3494 | } | |
3495 | for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++) | |
3496 | if (limits_selected & BIT(limit)) | |
3497 | break; | |
3498 | /* UAPI enables multiselection, but currently it is not used */ | |
3499 | if (limits_selected != BIT(limit)) { | |
3500 | NL_SET_ERR_MSG_MOD(info->extack, | |
3501 | "Multiselection of limit is not supported"); | |
3502 | return -EOPNOTSUPP; | |
3503 | } | |
3504 | if (!devlink_reload_limit_is_supported(devlink, limit)) { | |
3505 | NL_SET_ERR_MSG_MOD(info->extack, | |
3506 | "Requested limit is not supported by the driver"); | |
3507 | return -EOPNOTSUPP; | |
3508 | } | |
3509 | if (devlink_reload_combination_is_invalid(action, limit)) { | |
3510 | NL_SET_ERR_MSG_MOD(info->extack, | |
3511 | "Requested limit is invalid for this action"); | |
3512 | return -EINVAL; | |
3513 | } | |
3514 | } | |
3515 | err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack); | |
070c63f2 JP |
3516 | |
3517 | if (dest_net) | |
3518 | put_net(dest_net); | |
3519 | ||
ccdf0721 MS |
3520 | if (err) |
3521 | return err; | |
3522 | /* For backward compatibility generate reply only if attributes used by user */ | |
dc64cc7c | 3523 | if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) |
ccdf0721 MS |
3524 | return 0; |
3525 | ||
3526 | return devlink_nl_reload_actions_performed_snd(devlink, actions_performed, | |
3527 | DEVLINK_CMD_RELOAD, info); | |
2d8dc5bb AS |
3528 | } |
3529 | ||
191ed202 JP |
3530 | static int devlink_nl_flash_update_fill(struct sk_buff *msg, |
3531 | struct devlink *devlink, | |
3532 | enum devlink_command cmd, | |
6700acc5 | 3533 | struct devlink_flash_notify *params) |
191ed202 JP |
3534 | { |
3535 | void *hdr; | |
3536 | ||
3537 | hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd); | |
3538 | if (!hdr) | |
3539 | return -EMSGSIZE; | |
3540 | ||
3541 | if (devlink_nl_put_handle(msg, devlink)) | |
3542 | goto nla_put_failure; | |
3543 | ||
3544 | if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS) | |
3545 | goto out; | |
3546 | ||
6700acc5 | 3547 | if (params->status_msg && |
191ed202 | 3548 | nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG, |
6700acc5 | 3549 | params->status_msg)) |
191ed202 | 3550 | goto nla_put_failure; |
6700acc5 | 3551 | if (params->component && |
191ed202 | 3552 | nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT, |
6700acc5 | 3553 | params->component)) |
191ed202 JP |
3554 | goto nla_put_failure; |
3555 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE, | |
6700acc5 | 3556 | params->done, DEVLINK_ATTR_PAD)) |
191ed202 JP |
3557 | goto nla_put_failure; |
3558 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL, | |
6700acc5 | 3559 | params->total, DEVLINK_ATTR_PAD)) |
191ed202 | 3560 | goto nla_put_failure; |
f92970c6 | 3561 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT, |
6700acc5 | 3562 | params->timeout, DEVLINK_ATTR_PAD)) |
f92970c6 | 3563 | goto nla_put_failure; |
191ed202 JP |
3564 | |
3565 | out: | |
3566 | genlmsg_end(msg, hdr); | |
3567 | return 0; | |
3568 | ||
3569 | nla_put_failure: | |
3570 | genlmsg_cancel(msg, hdr); | |
3571 | return -EMSGSIZE; | |
3572 | } | |
3573 | ||
3574 | static void __devlink_flash_update_notify(struct devlink *devlink, | |
3575 | enum devlink_command cmd, | |
6700acc5 | 3576 | struct devlink_flash_notify *params) |
191ed202 JP |
3577 | { |
3578 | struct sk_buff *msg; | |
3579 | int err; | |
3580 | ||
3581 | WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE && | |
3582 | cmd != DEVLINK_CMD_FLASH_UPDATE_END && | |
3583 | cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS); | |
3584 | ||
3585 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3586 | if (!msg) | |
3587 | return; | |
3588 | ||
6700acc5 | 3589 | err = devlink_nl_flash_update_fill(msg, devlink, cmd, params); |
191ed202 JP |
3590 | if (err) |
3591 | goto out_free_msg; | |
3592 | ||
3593 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3594 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
3595 | return; | |
3596 | ||
3597 | out_free_msg: | |
3598 | nlmsg_free(msg); | |
3599 | } | |
3600 | ||
52cc5f3a | 3601 | static void devlink_flash_update_begin_notify(struct devlink *devlink) |
191ed202 | 3602 | { |
6700acc5 SN |
3603 | struct devlink_flash_notify params = { 0 }; |
3604 | ||
191ed202 JP |
3605 | __devlink_flash_update_notify(devlink, |
3606 | DEVLINK_CMD_FLASH_UPDATE, | |
6700acc5 | 3607 | ¶ms); |
191ed202 | 3608 | } |
191ed202 | 3609 | |
52cc5f3a | 3610 | static void devlink_flash_update_end_notify(struct devlink *devlink) |
191ed202 | 3611 | { |
6700acc5 SN |
3612 | struct devlink_flash_notify params = { 0 }; |
3613 | ||
191ed202 JP |
3614 | __devlink_flash_update_notify(devlink, |
3615 | DEVLINK_CMD_FLASH_UPDATE_END, | |
6700acc5 | 3616 | ¶ms); |
191ed202 | 3617 | } |
191ed202 JP |
3618 | |
3619 | void devlink_flash_update_status_notify(struct devlink *devlink, | |
3620 | const char *status_msg, | |
3621 | const char *component, | |
3622 | unsigned long done, | |
3623 | unsigned long total) | |
3624 | { | |
6700acc5 SN |
3625 | struct devlink_flash_notify params = { |
3626 | .status_msg = status_msg, | |
3627 | .component = component, | |
3628 | .done = done, | |
3629 | .total = total, | |
3630 | }; | |
3631 | ||
191ed202 JP |
3632 | __devlink_flash_update_notify(devlink, |
3633 | DEVLINK_CMD_FLASH_UPDATE_STATUS, | |
6700acc5 | 3634 | ¶ms); |
191ed202 JP |
3635 | } |
3636 | EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify); | |
3637 | ||
f92970c6 SN |
3638 | void devlink_flash_update_timeout_notify(struct devlink *devlink, |
3639 | const char *status_msg, | |
3640 | const char *component, | |
3641 | unsigned long timeout) | |
3642 | { | |
6700acc5 SN |
3643 | struct devlink_flash_notify params = { |
3644 | .status_msg = status_msg, | |
3645 | .component = component, | |
3646 | .timeout = timeout, | |
3647 | }; | |
3648 | ||
f92970c6 SN |
3649 | __devlink_flash_update_notify(devlink, |
3650 | DEVLINK_CMD_FLASH_UPDATE_STATUS, | |
6700acc5 | 3651 | ¶ms); |
f92970c6 SN |
3652 | } |
3653 | EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify); | |
3654 | ||
76726ccb JK |
3655 | static int devlink_nl_cmd_flash_update(struct sk_buff *skb, |
3656 | struct genl_info *info) | |
3657 | { | |
b44cfd4f | 3658 | struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name; |
bc75c054 | 3659 | struct devlink_flash_update_params params = {}; |
76726ccb | 3660 | struct devlink *devlink = info->user_ptr[0]; |
b44cfd4f | 3661 | const char *file_name; |
22ec3d23 | 3662 | u32 supported_params; |
b44cfd4f | 3663 | int ret; |
76726ccb JK |
3664 | |
3665 | if (!devlink->ops->flash_update) | |
3666 | return -EOPNOTSUPP; | |
3667 | ||
3668 | if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]) | |
3669 | return -EINVAL; | |
22ec3d23 JK |
3670 | |
3671 | supported_params = devlink->ops->supported_flash_update_params; | |
3672 | ||
76726ccb | 3673 | nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT]; |
22ec3d23 JK |
3674 | if (nla_component) { |
3675 | if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) { | |
3676 | NL_SET_ERR_MSG_ATTR(info->extack, nla_component, | |
3677 | "component update is not supported by this device"); | |
3678 | return -EOPNOTSUPP; | |
3679 | } | |
bc75c054 | 3680 | params.component = nla_data(nla_component); |
22ec3d23 | 3681 | } |
76726ccb | 3682 | |
5d5b4128 JK |
3683 | nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK]; |
3684 | if (nla_overwrite_mask) { | |
3685 | struct nla_bitfield32 sections; | |
3686 | ||
3687 | if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) { | |
3688 | NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask, | |
3689 | "overwrite settings are not supported by this device"); | |
3690 | return -EOPNOTSUPP; | |
3691 | } | |
3692 | sections = nla_get_bitfield32(nla_overwrite_mask); | |
3693 | params.overwrite_mask = sections.value & sections.selector; | |
3694 | } | |
3695 | ||
b44cfd4f JK |
3696 | nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]; |
3697 | file_name = nla_data(nla_file_name); | |
3698 | ret = request_firmware(¶ms.fw, file_name, devlink->dev); | |
3699 | if (ret) { | |
3700 | NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file"); | |
3701 | return ret; | |
3702 | } | |
3703 | ||
52cc5f3a | 3704 | devlink_flash_update_begin_notify(devlink); |
b44cfd4f | 3705 | ret = devlink->ops->flash_update(devlink, ¶ms, info->extack); |
52cc5f3a | 3706 | devlink_flash_update_end_notify(devlink); |
b44cfd4f JK |
3707 | |
3708 | release_firmware(params.fw); | |
3709 | ||
3710 | return ret; | |
76726ccb JK |
3711 | } |
3712 | ||
036467c3 MS |
3713 | static const struct devlink_param devlink_param_generic[] = { |
3714 | { | |
3715 | .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, | |
3716 | .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME, | |
3717 | .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE, | |
3718 | }, | |
3719 | { | |
3720 | .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS, | |
3721 | .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME, | |
3722 | .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE, | |
3723 | }, | |
f567bcda VV |
3724 | { |
3725 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, | |
3726 | .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME, | |
3727 | .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE, | |
3728 | }, | |
f6a69885 AV |
3729 | { |
3730 | .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, | |
3731 | .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME, | |
3732 | .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE, | |
3733 | }, | |
e3b51061 VV |
3734 | { |
3735 | .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI, | |
3736 | .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME, | |
3737 | .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE, | |
3738 | }, | |
f61cba42 VV |
3739 | { |
3740 | .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX, | |
3741 | .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME, | |
3742 | .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE, | |
3743 | }, | |
16511789 VV |
3744 | { |
3745 | .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN, | |
3746 | .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME, | |
3747 | .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE, | |
3748 | }, | |
846e980a ST |
3749 | { |
3750 | .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, | |
3751 | .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME, | |
3752 | .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE, | |
3753 | }, | |
5bbd21df DM |
3754 | { |
3755 | .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE, | |
3756 | .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME, | |
3757 | .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE, | |
3758 | }, | |
6c7295e1 MG |
3759 | { |
3760 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE, | |
3761 | .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME, | |
3762 | .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE, | |
3763 | }, | |
195d9dec MS |
3764 | { |
3765 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET, | |
3766 | .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME, | |
3767 | .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE, | |
3768 | }, | |
036467c3 | 3769 | }; |
eabaef18 MS |
3770 | |
3771 | static int devlink_param_generic_verify(const struct devlink_param *param) | |
3772 | { | |
3773 | /* verify it match generic parameter by id and name */ | |
3774 | if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX) | |
3775 | return -EINVAL; | |
3776 | if (strcmp(param->name, devlink_param_generic[param->id].name)) | |
3777 | return -ENOENT; | |
3778 | ||
3779 | WARN_ON(param->type != devlink_param_generic[param->id].type); | |
3780 | ||
3781 | return 0; | |
3782 | } | |
3783 | ||
3784 | static int devlink_param_driver_verify(const struct devlink_param *param) | |
3785 | { | |
3786 | int i; | |
3787 | ||
3788 | if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX) | |
3789 | return -EINVAL; | |
3790 | /* verify no such name in generic params */ | |
3791 | for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++) | |
3792 | if (!strcmp(param->name, devlink_param_generic[i].name)) | |
3793 | return -EEXIST; | |
3794 | ||
3795 | return 0; | |
3796 | } | |
3797 | ||
3798 | static struct devlink_param_item * | |
3799 | devlink_param_find_by_name(struct list_head *param_list, | |
3800 | const char *param_name) | |
3801 | { | |
3802 | struct devlink_param_item *param_item; | |
3803 | ||
3804 | list_for_each_entry(param_item, param_list, list) | |
3805 | if (!strcmp(param_item->param->name, param_name)) | |
3806 | return param_item; | |
3807 | return NULL; | |
3808 | } | |
3809 | ||
ec01aeb1 MS |
3810 | static struct devlink_param_item * |
3811 | devlink_param_find_by_id(struct list_head *param_list, u32 param_id) | |
3812 | { | |
3813 | struct devlink_param_item *param_item; | |
3814 | ||
3815 | list_for_each_entry(param_item, param_list, list) | |
3816 | if (param_item->param->id == param_id) | |
3817 | return param_item; | |
3818 | return NULL; | |
3819 | } | |
3820 | ||
45f05def MS |
3821 | static bool |
3822 | devlink_param_cmode_is_supported(const struct devlink_param *param, | |
3823 | enum devlink_param_cmode cmode) | |
3824 | { | |
3825 | return test_bit(cmode, ¶m->supported_cmodes); | |
3826 | } | |
3827 | ||
3828 | static int devlink_param_get(struct devlink *devlink, | |
3829 | const struct devlink_param *param, | |
3830 | struct devlink_param_gset_ctx *ctx) | |
3831 | { | |
3832 | if (!param->get) | |
3833 | return -EOPNOTSUPP; | |
3834 | return param->get(devlink, param->id, ctx); | |
3835 | } | |
3836 | ||
e3b7ca18 MS |
3837 | static int devlink_param_set(struct devlink *devlink, |
3838 | const struct devlink_param *param, | |
3839 | struct devlink_param_gset_ctx *ctx) | |
3840 | { | |
3841 | if (!param->set) | |
3842 | return -EOPNOTSUPP; | |
3843 | return param->set(devlink, param->id, ctx); | |
3844 | } | |
3845 | ||
45f05def MS |
3846 | static int |
3847 | devlink_param_type_to_nla_type(enum devlink_param_type param_type) | |
3848 | { | |
3849 | switch (param_type) { | |
3850 | case DEVLINK_PARAM_TYPE_U8: | |
3851 | return NLA_U8; | |
3852 | case DEVLINK_PARAM_TYPE_U16: | |
3853 | return NLA_U16; | |
3854 | case DEVLINK_PARAM_TYPE_U32: | |
3855 | return NLA_U32; | |
3856 | case DEVLINK_PARAM_TYPE_STRING: | |
3857 | return NLA_STRING; | |
3858 | case DEVLINK_PARAM_TYPE_BOOL: | |
3859 | return NLA_FLAG; | |
3860 | default: | |
3861 | return -EINVAL; | |
3862 | } | |
3863 | } | |
3864 | ||
3865 | static int | |
3866 | devlink_nl_param_value_fill_one(struct sk_buff *msg, | |
3867 | enum devlink_param_type type, | |
3868 | enum devlink_param_cmode cmode, | |
3869 | union devlink_param_value val) | |
3870 | { | |
3871 | struct nlattr *param_value_attr; | |
3872 | ||
ae0be8de MK |
3873 | param_value_attr = nla_nest_start_noflag(msg, |
3874 | DEVLINK_ATTR_PARAM_VALUE); | |
45f05def MS |
3875 | if (!param_value_attr) |
3876 | goto nla_put_failure; | |
3877 | ||
3878 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode)) | |
3879 | goto value_nest_cancel; | |
3880 | ||
3881 | switch (type) { | |
3882 | case DEVLINK_PARAM_TYPE_U8: | |
3883 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8)) | |
3884 | goto value_nest_cancel; | |
3885 | break; | |
3886 | case DEVLINK_PARAM_TYPE_U16: | |
3887 | if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16)) | |
3888 | goto value_nest_cancel; | |
3889 | break; | |
3890 | case DEVLINK_PARAM_TYPE_U32: | |
3891 | if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32)) | |
3892 | goto value_nest_cancel; | |
3893 | break; | |
3894 | case DEVLINK_PARAM_TYPE_STRING: | |
3895 | if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, | |
3896 | val.vstr)) | |
3897 | goto value_nest_cancel; | |
3898 | break; | |
3899 | case DEVLINK_PARAM_TYPE_BOOL: | |
3900 | if (val.vbool && | |
3901 | nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA)) | |
3902 | goto value_nest_cancel; | |
3903 | break; | |
3904 | } | |
3905 | ||
3906 | nla_nest_end(msg, param_value_attr); | |
3907 | return 0; | |
3908 | ||
3909 | value_nest_cancel: | |
3910 | nla_nest_cancel(msg, param_value_attr); | |
3911 | nla_put_failure: | |
3912 | return -EMSGSIZE; | |
3913 | } | |
3914 | ||
3915 | static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink, | |
f4601dee | 3916 | unsigned int port_index, |
45f05def MS |
3917 | struct devlink_param_item *param_item, |
3918 | enum devlink_command cmd, | |
3919 | u32 portid, u32 seq, int flags) | |
3920 | { | |
3921 | union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1]; | |
7c62cfb8 | 3922 | bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {}; |
45f05def MS |
3923 | const struct devlink_param *param = param_item->param; |
3924 | struct devlink_param_gset_ctx ctx; | |
3925 | struct nlattr *param_values_list; | |
3926 | struct nlattr *param_attr; | |
3927 | int nla_type; | |
3928 | void *hdr; | |
3929 | int err; | |
3930 | int i; | |
3931 | ||
3932 | /* Get value from driver part to driverinit configuration mode */ | |
3933 | for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { | |
3934 | if (!devlink_param_cmode_is_supported(param, i)) | |
3935 | continue; | |
3936 | if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) { | |
3937 | if (!param_item->driverinit_value_valid) | |
3938 | return -EOPNOTSUPP; | |
3939 | param_value[i] = param_item->driverinit_value; | |
3940 | } else { | |
7c62cfb8 JP |
3941 | if (!param_item->published) |
3942 | continue; | |
45f05def MS |
3943 | ctx.cmode = i; |
3944 | err = devlink_param_get(devlink, param, &ctx); | |
3945 | if (err) | |
3946 | return err; | |
3947 | param_value[i] = ctx.val; | |
3948 | } | |
7c62cfb8 | 3949 | param_value_set[i] = true; |
45f05def MS |
3950 | } |
3951 | ||
3952 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
3953 | if (!hdr) | |
3954 | return -EMSGSIZE; | |
3955 | ||
3956 | if (devlink_nl_put_handle(msg, devlink)) | |
3957 | goto genlmsg_cancel; | |
f4601dee | 3958 | |
c1e5786d VV |
3959 | if (cmd == DEVLINK_CMD_PORT_PARAM_GET || |
3960 | cmd == DEVLINK_CMD_PORT_PARAM_NEW || | |
3961 | cmd == DEVLINK_CMD_PORT_PARAM_DEL) | |
f4601dee VV |
3962 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index)) |
3963 | goto genlmsg_cancel; | |
3964 | ||
ae0be8de | 3965 | param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM); |
45f05def MS |
3966 | if (!param_attr) |
3967 | goto genlmsg_cancel; | |
3968 | if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name)) | |
3969 | goto param_nest_cancel; | |
3970 | if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC)) | |
3971 | goto param_nest_cancel; | |
3972 | ||
3973 | nla_type = devlink_param_type_to_nla_type(param->type); | |
3974 | if (nla_type < 0) | |
3975 | goto param_nest_cancel; | |
3976 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type)) | |
3977 | goto param_nest_cancel; | |
3978 | ||
ae0be8de MK |
3979 | param_values_list = nla_nest_start_noflag(msg, |
3980 | DEVLINK_ATTR_PARAM_VALUES_LIST); | |
45f05def MS |
3981 | if (!param_values_list) |
3982 | goto param_nest_cancel; | |
3983 | ||
3984 | for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { | |
7c62cfb8 | 3985 | if (!param_value_set[i]) |
45f05def MS |
3986 | continue; |
3987 | err = devlink_nl_param_value_fill_one(msg, param->type, | |
3988 | i, param_value[i]); | |
3989 | if (err) | |
3990 | goto values_list_nest_cancel; | |
3991 | } | |
3992 | ||
3993 | nla_nest_end(msg, param_values_list); | |
3994 | nla_nest_end(msg, param_attr); | |
3995 | genlmsg_end(msg, hdr); | |
3996 | return 0; | |
3997 | ||
3998 | values_list_nest_cancel: | |
3999 | nla_nest_end(msg, param_values_list); | |
4000 | param_nest_cancel: | |
4001 | nla_nest_cancel(msg, param_attr); | |
4002 | genlmsg_cancel: | |
4003 | genlmsg_cancel(msg, hdr); | |
4004 | return -EMSGSIZE; | |
4005 | } | |
4006 | ||
ea601e17 | 4007 | static void devlink_param_notify(struct devlink *devlink, |
c1e5786d | 4008 | unsigned int port_index, |
ea601e17 MS |
4009 | struct devlink_param_item *param_item, |
4010 | enum devlink_command cmd) | |
4011 | { | |
4012 | struct sk_buff *msg; | |
4013 | int err; | |
4014 | ||
c1e5786d VV |
4015 | WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL && |
4016 | cmd != DEVLINK_CMD_PORT_PARAM_NEW && | |
4017 | cmd != DEVLINK_CMD_PORT_PARAM_DEL); | |
ea601e17 MS |
4018 | |
4019 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4020 | if (!msg) | |
4021 | return; | |
c1e5786d VV |
4022 | err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd, |
4023 | 0, 0, 0); | |
ea601e17 MS |
4024 | if (err) { |
4025 | nlmsg_free(msg); | |
4026 | return; | |
4027 | } | |
4028 | ||
4029 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
4030 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
4031 | } | |
4032 | ||
45f05def MS |
4033 | static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg, |
4034 | struct netlink_callback *cb) | |
4035 | { | |
4036 | struct devlink_param_item *param_item; | |
4037 | struct devlink *devlink; | |
4038 | int start = cb->args[0]; | |
4039 | int idx = 0; | |
c62c2cfb | 4040 | int err = 0; |
45f05def MS |
4041 | |
4042 | mutex_lock(&devlink_mutex); | |
4043 | list_for_each_entry(devlink, &devlink_list, list) { | |
4044 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4045 | continue; | |
4046 | mutex_lock(&devlink->lock); | |
4047 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
4048 | if (idx < start) { | |
4049 | idx++; | |
4050 | continue; | |
4051 | } | |
f4601dee | 4052 | err = devlink_nl_param_fill(msg, devlink, 0, param_item, |
45f05def MS |
4053 | DEVLINK_CMD_PARAM_GET, |
4054 | NETLINK_CB(cb->skb).portid, | |
4055 | cb->nlh->nlmsg_seq, | |
4056 | NLM_F_MULTI); | |
82274d07 JK |
4057 | if (err == -EOPNOTSUPP) { |
4058 | err = 0; | |
4059 | } else if (err) { | |
45f05def MS |
4060 | mutex_unlock(&devlink->lock); |
4061 | goto out; | |
4062 | } | |
4063 | idx++; | |
4064 | } | |
4065 | mutex_unlock(&devlink->lock); | |
4066 | } | |
4067 | out: | |
4068 | mutex_unlock(&devlink_mutex); | |
4069 | ||
c62c2cfb JP |
4070 | if (err != -EMSGSIZE) |
4071 | return err; | |
4072 | ||
45f05def MS |
4073 | cb->args[0] = idx; |
4074 | return msg->len; | |
4075 | } | |
4076 | ||
e3b7ca18 MS |
4077 | static int |
4078 | devlink_param_type_get_from_info(struct genl_info *info, | |
4079 | enum devlink_param_type *param_type) | |
4080 | { | |
4081 | if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE]) | |
4082 | return -EINVAL; | |
4083 | ||
4084 | switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) { | |
4085 | case NLA_U8: | |
4086 | *param_type = DEVLINK_PARAM_TYPE_U8; | |
4087 | break; | |
4088 | case NLA_U16: | |
4089 | *param_type = DEVLINK_PARAM_TYPE_U16; | |
4090 | break; | |
4091 | case NLA_U32: | |
4092 | *param_type = DEVLINK_PARAM_TYPE_U32; | |
4093 | break; | |
4094 | case NLA_STRING: | |
4095 | *param_type = DEVLINK_PARAM_TYPE_STRING; | |
4096 | break; | |
4097 | case NLA_FLAG: | |
4098 | *param_type = DEVLINK_PARAM_TYPE_BOOL; | |
4099 | break; | |
4100 | default: | |
4101 | return -EINVAL; | |
4102 | } | |
4103 | ||
4104 | return 0; | |
4105 | } | |
4106 | ||
4107 | static int | |
4108 | devlink_param_value_get_from_info(const struct devlink_param *param, | |
4109 | struct genl_info *info, | |
4110 | union devlink_param_value *value) | |
4111 | { | |
8750939b | 4112 | struct nlattr *param_data; |
f355cfcd MS |
4113 | int len; |
4114 | ||
8750939b JK |
4115 | param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]; |
4116 | ||
4117 | if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data) | |
e3b7ca18 MS |
4118 | return -EINVAL; |
4119 | ||
4120 | switch (param->type) { | |
4121 | case DEVLINK_PARAM_TYPE_U8: | |
8750939b JK |
4122 | if (nla_len(param_data) != sizeof(u8)) |
4123 | return -EINVAL; | |
4124 | value->vu8 = nla_get_u8(param_data); | |
e3b7ca18 MS |
4125 | break; |
4126 | case DEVLINK_PARAM_TYPE_U16: | |
8750939b JK |
4127 | if (nla_len(param_data) != sizeof(u16)) |
4128 | return -EINVAL; | |
4129 | value->vu16 = nla_get_u16(param_data); | |
e3b7ca18 MS |
4130 | break; |
4131 | case DEVLINK_PARAM_TYPE_U32: | |
8750939b JK |
4132 | if (nla_len(param_data) != sizeof(u32)) |
4133 | return -EINVAL; | |
4134 | value->vu32 = nla_get_u32(param_data); | |
e3b7ca18 MS |
4135 | break; |
4136 | case DEVLINK_PARAM_TYPE_STRING: | |
8750939b JK |
4137 | len = strnlen(nla_data(param_data), nla_len(param_data)); |
4138 | if (len == nla_len(param_data) || | |
bde74ad1 | 4139 | len >= __DEVLINK_PARAM_MAX_STRING_VALUE) |
e3b7ca18 | 4140 | return -EINVAL; |
8750939b | 4141 | strcpy(value->vstr, nla_data(param_data)); |
e3b7ca18 MS |
4142 | break; |
4143 | case DEVLINK_PARAM_TYPE_BOOL: | |
8750939b JK |
4144 | if (param_data && nla_len(param_data)) |
4145 | return -EINVAL; | |
4146 | value->vbool = nla_get_flag(param_data); | |
e3b7ca18 MS |
4147 | break; |
4148 | } | |
4149 | return 0; | |
4150 | } | |
4151 | ||
45f05def | 4152 | static struct devlink_param_item * |
f4601dee | 4153 | devlink_param_get_from_info(struct list_head *param_list, |
45f05def MS |
4154 | struct genl_info *info) |
4155 | { | |
4156 | char *param_name; | |
4157 | ||
4158 | if (!info->attrs[DEVLINK_ATTR_PARAM_NAME]) | |
4159 | return NULL; | |
4160 | ||
4161 | param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]); | |
f4601dee | 4162 | return devlink_param_find_by_name(param_list, param_name); |
45f05def MS |
4163 | } |
4164 | ||
4165 | static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb, | |
4166 | struct genl_info *info) | |
4167 | { | |
4168 | struct devlink *devlink = info->user_ptr[0]; | |
4169 | struct devlink_param_item *param_item; | |
4170 | struct sk_buff *msg; | |
4171 | int err; | |
4172 | ||
f4601dee | 4173 | param_item = devlink_param_get_from_info(&devlink->param_list, info); |
45f05def MS |
4174 | if (!param_item) |
4175 | return -EINVAL; | |
4176 | ||
4177 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4178 | if (!msg) | |
4179 | return -ENOMEM; | |
4180 | ||
f4601dee | 4181 | err = devlink_nl_param_fill(msg, devlink, 0, param_item, |
45f05def MS |
4182 | DEVLINK_CMD_PARAM_GET, |
4183 | info->snd_portid, info->snd_seq, 0); | |
4184 | if (err) { | |
4185 | nlmsg_free(msg); | |
4186 | return err; | |
4187 | } | |
4188 | ||
4189 | return genlmsg_reply(msg, info); | |
4190 | } | |
4191 | ||
9c54873b | 4192 | static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink, |
c1e5786d | 4193 | unsigned int port_index, |
9c54873b VV |
4194 | struct list_head *param_list, |
4195 | struct genl_info *info, | |
4196 | enum devlink_command cmd) | |
e3b7ca18 | 4197 | { |
e3b7ca18 MS |
4198 | enum devlink_param_type param_type; |
4199 | struct devlink_param_gset_ctx ctx; | |
4200 | enum devlink_param_cmode cmode; | |
4201 | struct devlink_param_item *param_item; | |
4202 | const struct devlink_param *param; | |
4203 | union devlink_param_value value; | |
4204 | int err = 0; | |
4205 | ||
9c54873b | 4206 | param_item = devlink_param_get_from_info(param_list, info); |
e3b7ca18 MS |
4207 | if (!param_item) |
4208 | return -EINVAL; | |
4209 | param = param_item->param; | |
4210 | err = devlink_param_type_get_from_info(info, ¶m_type); | |
4211 | if (err) | |
4212 | return err; | |
4213 | if (param_type != param->type) | |
4214 | return -EINVAL; | |
4215 | err = devlink_param_value_get_from_info(param, info, &value); | |
4216 | if (err) | |
4217 | return err; | |
4218 | if (param->validate) { | |
4219 | err = param->validate(devlink, param->id, value, info->extack); | |
4220 | if (err) | |
4221 | return err; | |
4222 | } | |
4223 | ||
4224 | if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]) | |
4225 | return -EINVAL; | |
4226 | cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]); | |
4227 | if (!devlink_param_cmode_is_supported(param, cmode)) | |
4228 | return -EOPNOTSUPP; | |
4229 | ||
4230 | if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) { | |
1276534c MS |
4231 | if (param->type == DEVLINK_PARAM_TYPE_STRING) |
4232 | strcpy(param_item->driverinit_value.vstr, value.vstr); | |
4233 | else | |
4234 | param_item->driverinit_value = value; | |
e3b7ca18 MS |
4235 | param_item->driverinit_value_valid = true; |
4236 | } else { | |
4237 | if (!param->set) | |
4238 | return -EOPNOTSUPP; | |
4239 | ctx.val = value; | |
4240 | ctx.cmode = cmode; | |
4241 | err = devlink_param_set(devlink, param, &ctx); | |
4242 | if (err) | |
4243 | return err; | |
4244 | } | |
4245 | ||
c1e5786d | 4246 | devlink_param_notify(devlink, port_index, param_item, cmd); |
e3b7ca18 MS |
4247 | return 0; |
4248 | } | |
4249 | ||
9c54873b VV |
4250 | static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb, |
4251 | struct genl_info *info) | |
4252 | { | |
4253 | struct devlink *devlink = info->user_ptr[0]; | |
4254 | ||
c1e5786d | 4255 | return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list, |
9c54873b VV |
4256 | info, DEVLINK_CMD_PARAM_NEW); |
4257 | } | |
4258 | ||
eabaef18 | 4259 | static int devlink_param_register_one(struct devlink *devlink, |
c1e5786d | 4260 | unsigned int port_index, |
39e6160e | 4261 | struct list_head *param_list, |
c1e5786d VV |
4262 | const struct devlink_param *param, |
4263 | enum devlink_command cmd) | |
eabaef18 MS |
4264 | { |
4265 | struct devlink_param_item *param_item; | |
4266 | ||
39e6160e | 4267 | if (devlink_param_find_by_name(param_list, param->name)) |
eabaef18 MS |
4268 | return -EEXIST; |
4269 | ||
4270 | if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
4271 | WARN_ON(param->get || param->set); | |
4272 | else | |
4273 | WARN_ON(!param->get || !param->set); | |
4274 | ||
4275 | param_item = kzalloc(sizeof(*param_item), GFP_KERNEL); | |
4276 | if (!param_item) | |
4277 | return -ENOMEM; | |
4278 | param_item->param = param; | |
4279 | ||
39e6160e | 4280 | list_add_tail(¶m_item->list, param_list); |
c1e5786d | 4281 | devlink_param_notify(devlink, port_index, param_item, cmd); |
eabaef18 MS |
4282 | return 0; |
4283 | } | |
4284 | ||
4285 | static void devlink_param_unregister_one(struct devlink *devlink, | |
c1e5786d | 4286 | unsigned int port_index, |
39e6160e | 4287 | struct list_head *param_list, |
c1e5786d VV |
4288 | const struct devlink_param *param, |
4289 | enum devlink_command cmd) | |
eabaef18 MS |
4290 | { |
4291 | struct devlink_param_item *param_item; | |
4292 | ||
39e6160e | 4293 | param_item = devlink_param_find_by_name(param_list, param->name); |
eabaef18 | 4294 | WARN_ON(!param_item); |
c1e5786d | 4295 | devlink_param_notify(devlink, port_index, param_item, cmd); |
eabaef18 MS |
4296 | list_del(¶m_item->list); |
4297 | kfree(param_item); | |
4298 | } | |
4299 | ||
f4601dee VV |
4300 | static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg, |
4301 | struct netlink_callback *cb) | |
4302 | { | |
4303 | struct devlink_param_item *param_item; | |
4304 | struct devlink_port *devlink_port; | |
4305 | struct devlink *devlink; | |
4306 | int start = cb->args[0]; | |
4307 | int idx = 0; | |
c62c2cfb | 4308 | int err = 0; |
f4601dee VV |
4309 | |
4310 | mutex_lock(&devlink_mutex); | |
4311 | list_for_each_entry(devlink, &devlink_list, list) { | |
4312 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4313 | continue; | |
4314 | mutex_lock(&devlink->lock); | |
4315 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
4316 | list_for_each_entry(param_item, | |
4317 | &devlink_port->param_list, list) { | |
4318 | if (idx < start) { | |
4319 | idx++; | |
4320 | continue; | |
4321 | } | |
4322 | err = devlink_nl_param_fill(msg, | |
4323 | devlink_port->devlink, | |
4324 | devlink_port->index, param_item, | |
4325 | DEVLINK_CMD_PORT_PARAM_GET, | |
4326 | NETLINK_CB(cb->skb).portid, | |
4327 | cb->nlh->nlmsg_seq, | |
4328 | NLM_F_MULTI); | |
82274d07 JK |
4329 | if (err == -EOPNOTSUPP) { |
4330 | err = 0; | |
4331 | } else if (err) { | |
f4601dee VV |
4332 | mutex_unlock(&devlink->lock); |
4333 | goto out; | |
4334 | } | |
4335 | idx++; | |
4336 | } | |
4337 | } | |
4338 | mutex_unlock(&devlink->lock); | |
4339 | } | |
4340 | out: | |
4341 | mutex_unlock(&devlink_mutex); | |
4342 | ||
c62c2cfb JP |
4343 | if (err != -EMSGSIZE) |
4344 | return err; | |
4345 | ||
f4601dee VV |
4346 | cb->args[0] = idx; |
4347 | return msg->len; | |
4348 | } | |
4349 | ||
4350 | static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb, | |
4351 | struct genl_info *info) | |
4352 | { | |
7e238de8 | 4353 | struct devlink_port *devlink_port = info->user_ptr[1]; |
f4601dee VV |
4354 | struct devlink_param_item *param_item; |
4355 | struct sk_buff *msg; | |
4356 | int err; | |
4357 | ||
4358 | param_item = devlink_param_get_from_info(&devlink_port->param_list, | |
4359 | info); | |
4360 | if (!param_item) | |
4361 | return -EINVAL; | |
4362 | ||
4363 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4364 | if (!msg) | |
4365 | return -ENOMEM; | |
4366 | ||
4367 | err = devlink_nl_param_fill(msg, devlink_port->devlink, | |
4368 | devlink_port->index, param_item, | |
4369 | DEVLINK_CMD_PORT_PARAM_GET, | |
4370 | info->snd_portid, info->snd_seq, 0); | |
4371 | if (err) { | |
4372 | nlmsg_free(msg); | |
4373 | return err; | |
4374 | } | |
4375 | ||
4376 | return genlmsg_reply(msg, info); | |
4377 | } | |
4378 | ||
9c54873b VV |
4379 | static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb, |
4380 | struct genl_info *info) | |
4381 | { | |
7e238de8 | 4382 | struct devlink_port *devlink_port = info->user_ptr[1]; |
9c54873b VV |
4383 | |
4384 | return __devlink_nl_cmd_param_set_doit(devlink_port->devlink, | |
c1e5786d VV |
4385 | devlink_port->index, |
4386 | &devlink_port->param_list, info, | |
4387 | DEVLINK_CMD_PORT_PARAM_NEW); | |
9c54873b VV |
4388 | } |
4389 | ||
a006d467 AV |
4390 | static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg, |
4391 | struct devlink *devlink, | |
4392 | struct devlink_snapshot *snapshot) | |
4393 | { | |
4394 | struct nlattr *snap_attr; | |
4395 | int err; | |
4396 | ||
ae0be8de | 4397 | snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT); |
a006d467 AV |
4398 | if (!snap_attr) |
4399 | return -EINVAL; | |
4400 | ||
4401 | err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id); | |
4402 | if (err) | |
4403 | goto nla_put_failure; | |
4404 | ||
4405 | nla_nest_end(msg, snap_attr); | |
4406 | return 0; | |
4407 | ||
4408 | nla_put_failure: | |
4409 | nla_nest_cancel(msg, snap_attr); | |
4410 | return err; | |
4411 | } | |
4412 | ||
4413 | static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg, | |
4414 | struct devlink *devlink, | |
4415 | struct devlink_region *region) | |
4416 | { | |
4417 | struct devlink_snapshot *snapshot; | |
4418 | struct nlattr *snapshots_attr; | |
4419 | int err; | |
4420 | ||
ae0be8de MK |
4421 | snapshots_attr = nla_nest_start_noflag(msg, |
4422 | DEVLINK_ATTR_REGION_SNAPSHOTS); | |
a006d467 AV |
4423 | if (!snapshots_attr) |
4424 | return -EINVAL; | |
4425 | ||
4426 | list_for_each_entry(snapshot, ®ion->snapshot_list, list) { | |
4427 | err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot); | |
4428 | if (err) | |
4429 | goto nla_put_failure; | |
4430 | } | |
4431 | ||
4432 | nla_nest_end(msg, snapshots_attr); | |
4433 | return 0; | |
4434 | ||
4435 | nla_put_failure: | |
4436 | nla_nest_cancel(msg, snapshots_attr); | |
4437 | return err; | |
4438 | } | |
4439 | ||
d8db7ea5 AV |
4440 | static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink, |
4441 | enum devlink_command cmd, u32 portid, | |
4442 | u32 seq, int flags, | |
4443 | struct devlink_region *region) | |
4444 | { | |
4445 | void *hdr; | |
4446 | int err; | |
4447 | ||
4448 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
4449 | if (!hdr) | |
4450 | return -EMSGSIZE; | |
4451 | ||
4452 | err = devlink_nl_put_handle(msg, devlink); | |
4453 | if (err) | |
4454 | goto nla_put_failure; | |
4455 | ||
6c211809 DC |
4456 | if (region->port) { |
4457 | err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, | |
4458 | region->port->index); | |
4459 | if (err) | |
544e7c33 | 4460 | goto nla_put_failure; |
6c211809 | 4461 | } |
544e7c33 | 4462 | |
e8937681 | 4463 | err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name); |
d8db7ea5 AV |
4464 | if (err) |
4465 | goto nla_put_failure; | |
4466 | ||
4467 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, | |
4468 | region->size, | |
4469 | DEVLINK_ATTR_PAD); | |
4470 | if (err) | |
4471 | goto nla_put_failure; | |
4472 | ||
a006d467 AV |
4473 | err = devlink_nl_region_snapshots_id_put(msg, devlink, region); |
4474 | if (err) | |
4475 | goto nla_put_failure; | |
4476 | ||
d8db7ea5 AV |
4477 | genlmsg_end(msg, hdr); |
4478 | return 0; | |
4479 | ||
4480 | nla_put_failure: | |
4481 | genlmsg_cancel(msg, hdr); | |
4482 | return err; | |
4483 | } | |
4484 | ||
dd86fec7 JK |
4485 | static struct sk_buff * |
4486 | devlink_nl_region_notify_build(struct devlink_region *region, | |
4487 | struct devlink_snapshot *snapshot, | |
4488 | enum devlink_command cmd, u32 portid, u32 seq) | |
866319bb AV |
4489 | { |
4490 | struct devlink *devlink = region->devlink; | |
4491 | struct sk_buff *msg; | |
4492 | void *hdr; | |
4493 | int err; | |
4494 | ||
866319bb AV |
4495 | |
4496 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4497 | if (!msg) | |
dd86fec7 | 4498 | return ERR_PTR(-ENOMEM); |
866319bb | 4499 | |
dd86fec7 JK |
4500 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd); |
4501 | if (!hdr) { | |
4502 | err = -EMSGSIZE; | |
866319bb | 4503 | goto out_free_msg; |
dd86fec7 | 4504 | } |
866319bb AV |
4505 | |
4506 | err = devlink_nl_put_handle(msg, devlink); | |
4507 | if (err) | |
4508 | goto out_cancel_msg; | |
4509 | ||
6c211809 DC |
4510 | if (region->port) { |
4511 | err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, | |
4512 | region->port->index); | |
4513 | if (err) | |
544e7c33 | 4514 | goto out_cancel_msg; |
6c211809 | 4515 | } |
544e7c33 | 4516 | |
866319bb | 4517 | err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, |
e8937681 | 4518 | region->ops->name); |
866319bb AV |
4519 | if (err) |
4520 | goto out_cancel_msg; | |
4521 | ||
4522 | if (snapshot) { | |
4523 | err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, | |
4524 | snapshot->id); | |
4525 | if (err) | |
4526 | goto out_cancel_msg; | |
4527 | } else { | |
4528 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, | |
4529 | region->size, DEVLINK_ATTR_PAD); | |
4530 | if (err) | |
4531 | goto out_cancel_msg; | |
4532 | } | |
4533 | genlmsg_end(msg, hdr); | |
4534 | ||
dd86fec7 | 4535 | return msg; |
866319bb AV |
4536 | |
4537 | out_cancel_msg: | |
4538 | genlmsg_cancel(msg, hdr); | |
4539 | out_free_msg: | |
4540 | nlmsg_free(msg); | |
dd86fec7 JK |
4541 | return ERR_PTR(err); |
4542 | } | |
4543 | ||
4544 | static void devlink_nl_region_notify(struct devlink_region *region, | |
4545 | struct devlink_snapshot *snapshot, | |
4546 | enum devlink_command cmd) | |
4547 | { | |
4548 | struct devlink *devlink = region->devlink; | |
4549 | struct sk_buff *msg; | |
4550 | ||
4551 | WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL); | |
4552 | ||
4553 | msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0); | |
4554 | if (IS_ERR(msg)) | |
4555 | return; | |
4556 | ||
4557 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
4558 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
866319bb AV |
4559 | } |
4560 | ||
12102436 JK |
4561 | /** |
4562 | * __devlink_snapshot_id_increment - Increment number of snapshots using an id | |
4563 | * @devlink: devlink instance | |
4564 | * @id: the snapshot id | |
4565 | * | |
4566 | * Track when a new snapshot begins using an id. Load the count for the | |
4567 | * given id from the snapshot xarray, increment it, and store it back. | |
4568 | * | |
4569 | * Called when a new snapshot is created with the given id. | |
4570 | * | |
4571 | * The id *must* have been previously allocated by | |
4572 | * devlink_region_snapshot_id_get(). | |
4573 | * | |
4574 | * Returns 0 on success, or an error on failure. | |
4575 | */ | |
4576 | static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id) | |
4577 | { | |
4578 | unsigned long count; | |
4579 | void *p; | |
4580 | ||
4581 | lockdep_assert_held(&devlink->lock); | |
4582 | ||
4583 | p = xa_load(&devlink->snapshot_ids, id); | |
4584 | if (WARN_ON(!p)) | |
4585 | return -EINVAL; | |
4586 | ||
4587 | if (WARN_ON(!xa_is_value(p))) | |
4588 | return -EINVAL; | |
4589 | ||
4590 | count = xa_to_value(p); | |
4591 | count++; | |
4592 | ||
4593 | return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), | |
4594 | GFP_KERNEL)); | |
4595 | } | |
4596 | ||
4597 | /** | |
4598 | * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id | |
4599 | * @devlink: devlink instance | |
4600 | * @id: the snapshot id | |
4601 | * | |
4602 | * Track when a snapshot is deleted and stops using an id. Load the count | |
4603 | * for the given id from the snapshot xarray, decrement it, and store it | |
4604 | * back. | |
4605 | * | |
4606 | * If the count reaches zero, erase this id from the xarray, freeing it | |
4607 | * up for future re-use by devlink_region_snapshot_id_get(). | |
4608 | * | |
4609 | * Called when a snapshot using the given id is deleted, and when the | |
4610 | * initial allocator of the id is finished using it. | |
4611 | */ | |
4612 | static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id) | |
4613 | { | |
4614 | unsigned long count; | |
4615 | void *p; | |
4616 | ||
4617 | lockdep_assert_held(&devlink->lock); | |
4618 | ||
4619 | p = xa_load(&devlink->snapshot_ids, id); | |
4620 | if (WARN_ON(!p)) | |
4621 | return; | |
4622 | ||
4623 | if (WARN_ON(!xa_is_value(p))) | |
4624 | return; | |
4625 | ||
4626 | count = xa_to_value(p); | |
4627 | ||
4628 | if (count > 1) { | |
4629 | count--; | |
4630 | xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), | |
4631 | GFP_KERNEL); | |
4632 | } else { | |
4633 | /* If this was the last user, we can erase this id */ | |
4634 | xa_erase(&devlink->snapshot_ids, id); | |
4635 | } | |
4636 | } | |
4637 | ||
b9a17abf JK |
4638 | /** |
4639 | * __devlink_snapshot_id_insert - Insert a specific snapshot ID | |
4640 | * @devlink: devlink instance | |
4641 | * @id: the snapshot id | |
4642 | * | |
4643 | * Mark the given snapshot id as used by inserting a zero value into the | |
4644 | * snapshot xarray. | |
4645 | * | |
4646 | * This must be called while holding the devlink instance lock. Unlike | |
4647 | * devlink_snapshot_id_get, the initial reference count is zero, not one. | |
4648 | * It is expected that the id will immediately be used before | |
4649 | * releasing the devlink instance lock. | |
4650 | * | |
4651 | * Returns zero on success, or an error code if the snapshot id could not | |
4652 | * be inserted. | |
4653 | */ | |
4654 | static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id) | |
4655 | { | |
4656 | lockdep_assert_held(&devlink->lock); | |
4657 | ||
bd71ea60 | 4658 | if (xa_load(&devlink->snapshot_ids, id)) |
b9a17abf JK |
4659 | return -EEXIST; |
4660 | ||
4661 | return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0), | |
4662 | GFP_KERNEL)); | |
4663 | } | |
4664 | ||
7000108f JK |
4665 | /** |
4666 | * __devlink_region_snapshot_id_get - get snapshot ID | |
4667 | * @devlink: devlink instance | |
7ef19d3b | 4668 | * @id: storage to return snapshot id |
7000108f | 4669 | * |
7ef19d3b JK |
4670 | * Allocates a new snapshot id. Returns zero on success, or a negative |
4671 | * error on failure. Must be called while holding the devlink instance | |
4672 | * lock. | |
12102436 JK |
4673 | * |
4674 | * Snapshot IDs are tracked using an xarray which stores the number of | |
4675 | * users of the snapshot id. | |
4676 | * | |
4677 | * Note that the caller of this function counts as a 'user', in order to | |
4678 | * avoid race conditions. The caller must release its hold on the | |
4679 | * snapshot by using devlink_region_snapshot_id_put. | |
7000108f | 4680 | */ |
7ef19d3b | 4681 | static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) |
7000108f JK |
4682 | { |
4683 | lockdep_assert_held(&devlink->lock); | |
7ef19d3b | 4684 | |
12102436 JK |
4685 | return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1), |
4686 | xa_limit_32b, GFP_KERNEL); | |
7000108f JK |
4687 | } |
4688 | ||
cf80faee JK |
4689 | /** |
4690 | * __devlink_region_snapshot_create - create a new snapshot | |
4691 | * This will add a new snapshot of a region. The snapshot | |
4692 | * will be stored on the region struct and can be accessed | |
4693 | * from devlink. This is useful for future analyses of snapshots. | |
4694 | * Multiple snapshots can be created on a region. | |
4695 | * The @snapshot_id should be obtained using the getter function. | |
4696 | * | |
4697 | * Must be called only while holding the devlink instance lock. | |
4698 | * | |
4699 | * @region: devlink region of the snapshot | |
4700 | * @data: snapshot data | |
4701 | * @snapshot_id: snapshot id to be created | |
4702 | */ | |
4703 | static int | |
4704 | __devlink_region_snapshot_create(struct devlink_region *region, | |
4705 | u8 *data, u32 snapshot_id) | |
4706 | { | |
4707 | struct devlink *devlink = region->devlink; | |
4708 | struct devlink_snapshot *snapshot; | |
12102436 | 4709 | int err; |
cf80faee JK |
4710 | |
4711 | lockdep_assert_held(&devlink->lock); | |
4712 | ||
4713 | /* check if region can hold one more snapshot */ | |
4714 | if (region->cur_snapshots == region->max_snapshots) | |
47a39f61 | 4715 | return -ENOSPC; |
cf80faee JK |
4716 | |
4717 | if (devlink_region_snapshot_get_by_id(region, snapshot_id)) | |
4718 | return -EEXIST; | |
4719 | ||
4720 | snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL); | |
4721 | if (!snapshot) | |
4722 | return -ENOMEM; | |
4723 | ||
12102436 JK |
4724 | err = __devlink_snapshot_id_increment(devlink, snapshot_id); |
4725 | if (err) | |
4726 | goto err_snapshot_id_increment; | |
4727 | ||
cf80faee JK |
4728 | snapshot->id = snapshot_id; |
4729 | snapshot->region = region; | |
4730 | snapshot->data = data; | |
4731 | ||
4732 | list_add_tail(&snapshot->list, ®ion->snapshot_list); | |
4733 | ||
4734 | region->cur_snapshots++; | |
4735 | ||
4736 | devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW); | |
4737 | return 0; | |
12102436 JK |
4738 | |
4739 | err_snapshot_id_increment: | |
4740 | kfree(snapshot); | |
4741 | return err; | |
cf80faee JK |
4742 | } |
4743 | ||
92b49822 JP |
4744 | static void devlink_region_snapshot_del(struct devlink_region *region, |
4745 | struct devlink_snapshot *snapshot) | |
4746 | { | |
12102436 JK |
4747 | struct devlink *devlink = region->devlink; |
4748 | ||
4749 | lockdep_assert_held(&devlink->lock); | |
4750 | ||
92b49822 JP |
4751 | devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL); |
4752 | region->cur_snapshots--; | |
4753 | list_del(&snapshot->list); | |
a0a09f6b | 4754 | region->ops->destructor(snapshot->data); |
12102436 | 4755 | __devlink_snapshot_id_decrement(devlink, snapshot->id); |
92b49822 JP |
4756 | kfree(snapshot); |
4757 | } | |
4758 | ||
d8db7ea5 AV |
4759 | static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb, |
4760 | struct genl_info *info) | |
4761 | { | |
4762 | struct devlink *devlink = info->user_ptr[0]; | |
544e7c33 | 4763 | struct devlink_port *port = NULL; |
d8db7ea5 AV |
4764 | struct devlink_region *region; |
4765 | const char *region_name; | |
4766 | struct sk_buff *msg; | |
544e7c33 | 4767 | unsigned int index; |
d8db7ea5 AV |
4768 | int err; |
4769 | ||
4770 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) | |
4771 | return -EINVAL; | |
4772 | ||
544e7c33 AL |
4773 | if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { |
4774 | index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
4775 | ||
4776 | port = devlink_port_get_by_index(devlink, index); | |
4777 | if (!port) | |
4778 | return -ENODEV; | |
4779 | } | |
4780 | ||
d8db7ea5 | 4781 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); |
544e7c33 AL |
4782 | if (port) |
4783 | region = devlink_port_region_get_by_name(port, region_name); | |
4784 | else | |
4785 | region = devlink_region_get_by_name(devlink, region_name); | |
4786 | ||
d8db7ea5 AV |
4787 | if (!region) |
4788 | return -EINVAL; | |
4789 | ||
4790 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4791 | if (!msg) | |
4792 | return -ENOMEM; | |
4793 | ||
4794 | err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, | |
4795 | info->snd_portid, info->snd_seq, 0, | |
4796 | region); | |
4797 | if (err) { | |
4798 | nlmsg_free(msg); | |
4799 | return err; | |
4800 | } | |
4801 | ||
4802 | return genlmsg_reply(msg, info); | |
4803 | } | |
4804 | ||
544e7c33 AL |
4805 | static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg, |
4806 | struct netlink_callback *cb, | |
4807 | struct devlink_port *port, | |
4808 | int *idx, | |
4809 | int start) | |
4810 | { | |
4811 | struct devlink_region *region; | |
4812 | int err = 0; | |
4813 | ||
4814 | list_for_each_entry(region, &port->region_list, list) { | |
4815 | if (*idx < start) { | |
4816 | (*idx)++; | |
4817 | continue; | |
4818 | } | |
4819 | err = devlink_nl_region_fill(msg, port->devlink, | |
4820 | DEVLINK_CMD_REGION_GET, | |
4821 | NETLINK_CB(cb->skb).portid, | |
4822 | cb->nlh->nlmsg_seq, | |
4823 | NLM_F_MULTI, region); | |
4824 | if (err) | |
4825 | goto out; | |
4826 | (*idx)++; | |
4827 | } | |
4828 | ||
4829 | out: | |
4830 | return err; | |
4831 | } | |
4832 | ||
4833 | static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg, | |
4834 | struct netlink_callback *cb, | |
4835 | struct devlink *devlink, | |
4836 | int *idx, | |
4837 | int start) | |
4838 | { | |
4839 | struct devlink_region *region; | |
4840 | struct devlink_port *port; | |
4841 | int err = 0; | |
4842 | ||
4843 | mutex_lock(&devlink->lock); | |
4844 | list_for_each_entry(region, &devlink->region_list, list) { | |
4845 | if (*idx < start) { | |
4846 | (*idx)++; | |
4847 | continue; | |
4848 | } | |
4849 | err = devlink_nl_region_fill(msg, devlink, | |
4850 | DEVLINK_CMD_REGION_GET, | |
4851 | NETLINK_CB(cb->skb).portid, | |
4852 | cb->nlh->nlmsg_seq, | |
4853 | NLM_F_MULTI, region); | |
4854 | if (err) | |
4855 | goto out; | |
4856 | (*idx)++; | |
4857 | } | |
4858 | ||
4859 | list_for_each_entry(port, &devlink->port_list, list) { | |
4860 | err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx, | |
4861 | start); | |
4862 | if (err) | |
4863 | goto out; | |
4864 | } | |
4865 | ||
4866 | out: | |
4867 | mutex_unlock(&devlink->lock); | |
4868 | return err; | |
4869 | } | |
4870 | ||
d8db7ea5 AV |
4871 | static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg, |
4872 | struct netlink_callback *cb) | |
4873 | { | |
d8db7ea5 AV |
4874 | struct devlink *devlink; |
4875 | int start = cb->args[0]; | |
4876 | int idx = 0; | |
4877 | int err; | |
4878 | ||
4879 | mutex_lock(&devlink_mutex); | |
4880 | list_for_each_entry(devlink, &devlink_list, list) { | |
4881 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4882 | continue; | |
544e7c33 AL |
4883 | err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink, |
4884 | &idx, start); | |
4885 | if (err) | |
4886 | goto out; | |
d8db7ea5 AV |
4887 | } |
4888 | out: | |
4889 | mutex_unlock(&devlink_mutex); | |
4890 | cb->args[0] = idx; | |
4891 | return msg->len; | |
4892 | } | |
4893 | ||
866319bb AV |
4894 | static int devlink_nl_cmd_region_del(struct sk_buff *skb, |
4895 | struct genl_info *info) | |
4896 | { | |
4897 | struct devlink *devlink = info->user_ptr[0]; | |
4898 | struct devlink_snapshot *snapshot; | |
544e7c33 | 4899 | struct devlink_port *port = NULL; |
866319bb AV |
4900 | struct devlink_region *region; |
4901 | const char *region_name; | |
544e7c33 | 4902 | unsigned int index; |
866319bb AV |
4903 | u32 snapshot_id; |
4904 | ||
4905 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME] || | |
4906 | !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) | |
4907 | return -EINVAL; | |
4908 | ||
4909 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); | |
4910 | snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); | |
4911 | ||
544e7c33 AL |
4912 | if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { |
4913 | index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
4914 | ||
4915 | port = devlink_port_get_by_index(devlink, index); | |
4916 | if (!port) | |
4917 | return -ENODEV; | |
4918 | } | |
4919 | ||
4920 | if (port) | |
4921 | region = devlink_port_region_get_by_name(port, region_name); | |
4922 | else | |
4923 | region = devlink_region_get_by_name(devlink, region_name); | |
4924 | ||
866319bb AV |
4925 | if (!region) |
4926 | return -EINVAL; | |
4927 | ||
4928 | snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); | |
4929 | if (!snapshot) | |
4930 | return -EINVAL; | |
4931 | ||
92b49822 | 4932 | devlink_region_snapshot_del(region, snapshot); |
866319bb AV |
4933 | return 0; |
4934 | } | |
4935 | ||
b9a17abf JK |
4936 | static int |
4937 | devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info) | |
4938 | { | |
4939 | struct devlink *devlink = info->user_ptr[0]; | |
043b3e22 | 4940 | struct devlink_snapshot *snapshot; |
544e7c33 | 4941 | struct devlink_port *port = NULL; |
043b3e22 | 4942 | struct nlattr *snapshot_id_attr; |
b9a17abf JK |
4943 | struct devlink_region *region; |
4944 | const char *region_name; | |
544e7c33 | 4945 | unsigned int index; |
b9a17abf JK |
4946 | u32 snapshot_id; |
4947 | u8 *data; | |
4948 | int err; | |
4949 | ||
4950 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) { | |
4951 | NL_SET_ERR_MSG_MOD(info->extack, "No region name provided"); | |
4952 | return -EINVAL; | |
4953 | } | |
4954 | ||
b9a17abf | 4955 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); |
544e7c33 AL |
4956 | |
4957 | if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
4958 | index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
4959 | ||
4960 | port = devlink_port_get_by_index(devlink, index); | |
4961 | if (!port) | |
4962 | return -ENODEV; | |
4963 | } | |
4964 | ||
4965 | if (port) | |
4966 | region = devlink_port_region_get_by_name(port, region_name); | |
4967 | else | |
4968 | region = devlink_region_get_by_name(devlink, region_name); | |
4969 | ||
b9a17abf JK |
4970 | if (!region) { |
4971 | NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist"); | |
4972 | return -EINVAL; | |
4973 | } | |
4974 | ||
4975 | if (!region->ops->snapshot) { | |
4976 | NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot"); | |
4977 | return -EOPNOTSUPP; | |
4978 | } | |
4979 | ||
4980 | if (region->cur_snapshots == region->max_snapshots) { | |
4981 | NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots"); | |
4982 | return -ENOSPC; | |
4983 | } | |
4984 | ||
043b3e22 JK |
4985 | snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]; |
4986 | if (snapshot_id_attr) { | |
4987 | snapshot_id = nla_get_u32(snapshot_id_attr); | |
b9a17abf | 4988 | |
043b3e22 JK |
4989 | if (devlink_region_snapshot_get_by_id(region, snapshot_id)) { |
4990 | NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use"); | |
4991 | return -EEXIST; | |
4992 | } | |
b9a17abf | 4993 | |
043b3e22 JK |
4994 | err = __devlink_snapshot_id_insert(devlink, snapshot_id); |
4995 | if (err) | |
4996 | return err; | |
4997 | } else { | |
4998 | err = __devlink_region_snapshot_id_get(devlink, &snapshot_id); | |
4999 | if (err) { | |
5000 | NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id"); | |
5001 | return err; | |
5002 | } | |
5003 | } | |
b9a17abf | 5004 | |
544e7c33 AL |
5005 | if (port) |
5006 | err = region->port_ops->snapshot(port, region->port_ops, | |
5007 | info->extack, &data); | |
5008 | else | |
5009 | err = region->ops->snapshot(devlink, region->ops, | |
5010 | info->extack, &data); | |
b9a17abf JK |
5011 | if (err) |
5012 | goto err_snapshot_capture; | |
5013 | ||
5014 | err = __devlink_region_snapshot_create(region, data, snapshot_id); | |
5015 | if (err) | |
5016 | goto err_snapshot_create; | |
5017 | ||
043b3e22 JK |
5018 | if (!snapshot_id_attr) { |
5019 | struct sk_buff *msg; | |
5020 | ||
5021 | snapshot = devlink_region_snapshot_get_by_id(region, | |
5022 | snapshot_id); | |
5023 | if (WARN_ON(!snapshot)) | |
5024 | return -EINVAL; | |
5025 | ||
5026 | msg = devlink_nl_region_notify_build(region, snapshot, | |
5027 | DEVLINK_CMD_REGION_NEW, | |
5028 | info->snd_portid, | |
5029 | info->snd_seq); | |
5030 | err = PTR_ERR_OR_ZERO(msg); | |
5031 | if (err) | |
5032 | goto err_notify; | |
5033 | ||
5034 | err = genlmsg_reply(msg, info); | |
5035 | if (err) | |
5036 | goto err_notify; | |
5037 | } | |
5038 | ||
b9a17abf JK |
5039 | return 0; |
5040 | ||
5041 | err_snapshot_create: | |
5042 | region->ops->destructor(data); | |
5043 | err_snapshot_capture: | |
5044 | __devlink_snapshot_id_decrement(devlink, snapshot_id); | |
5045 | return err; | |
043b3e22 JK |
5046 | |
5047 | err_notify: | |
5048 | devlink_region_snapshot_del(region, snapshot); | |
5049 | return err; | |
b9a17abf JK |
5050 | } |
5051 | ||
4e54795a AV |
5052 | static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg, |
5053 | struct devlink *devlink, | |
5054 | u8 *chunk, u32 chunk_size, | |
5055 | u64 addr) | |
5056 | { | |
5057 | struct nlattr *chunk_attr; | |
5058 | int err; | |
5059 | ||
ae0be8de | 5060 | chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK); |
4e54795a AV |
5061 | if (!chunk_attr) |
5062 | return -EINVAL; | |
5063 | ||
5064 | err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk); | |
5065 | if (err) | |
5066 | goto nla_put_failure; | |
5067 | ||
5068 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr, | |
5069 | DEVLINK_ATTR_PAD); | |
5070 | if (err) | |
5071 | goto nla_put_failure; | |
5072 | ||
5073 | nla_nest_end(msg, chunk_attr); | |
5074 | return 0; | |
5075 | ||
5076 | nla_put_failure: | |
5077 | nla_nest_cancel(msg, chunk_attr); | |
5078 | return err; | |
5079 | } | |
5080 | ||
5081 | #define DEVLINK_REGION_READ_CHUNK_SIZE 256 | |
5082 | ||
5083 | static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb, | |
5084 | struct devlink *devlink, | |
5085 | struct devlink_region *region, | |
5086 | struct nlattr **attrs, | |
5087 | u64 start_offset, | |
5088 | u64 end_offset, | |
4e54795a AV |
5089 | u64 *new_offset) |
5090 | { | |
5091 | struct devlink_snapshot *snapshot; | |
5092 | u64 curr_offset = start_offset; | |
5093 | u32 snapshot_id; | |
5094 | int err = 0; | |
5095 | ||
5096 | *new_offset = start_offset; | |
5097 | ||
5098 | snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); | |
5099 | snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); | |
5100 | if (!snapshot) | |
5101 | return -EINVAL; | |
5102 | ||
4e54795a AV |
5103 | while (curr_offset < end_offset) { |
5104 | u32 data_size; | |
5105 | u8 *data; | |
5106 | ||
5107 | if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE) | |
5108 | data_size = end_offset - curr_offset; | |
5109 | else | |
5110 | data_size = DEVLINK_REGION_READ_CHUNK_SIZE; | |
5111 | ||
5112 | data = &snapshot->data[curr_offset]; | |
5113 | err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink, | |
5114 | data, data_size, | |
5115 | curr_offset); | |
5116 | if (err) | |
5117 | break; | |
5118 | ||
5119 | curr_offset += data_size; | |
5120 | } | |
5121 | *new_offset = curr_offset; | |
5122 | ||
5123 | return err; | |
5124 | } | |
5125 | ||
5126 | static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, | |
5127 | struct netlink_callback *cb) | |
5128 | { | |
ee85da53 | 5129 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
5a46b062 | 5130 | u64 ret_offset, start_offset, end_offset = U64_MAX; |
ee85da53 | 5131 | struct nlattr **attrs = info->attrs; |
544e7c33 | 5132 | struct devlink_port *port = NULL; |
4e54795a AV |
5133 | struct devlink_region *region; |
5134 | struct nlattr *chunks_attr; | |
5135 | const char *region_name; | |
5136 | struct devlink *devlink; | |
544e7c33 | 5137 | unsigned int index; |
4e54795a AV |
5138 | void *hdr; |
5139 | int err; | |
5140 | ||
5141 | start_offset = *((u64 *)&cb->args[0]); | |
5142 | ||
dac7c08f | 5143 | mutex_lock(&devlink_mutex); |
4e54795a | 5144 | devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); |
fdd41ec2 PP |
5145 | if (IS_ERR(devlink)) { |
5146 | err = PTR_ERR(devlink); | |
dac7c08f | 5147 | goto out_dev; |
fdd41ec2 | 5148 | } |
4e54795a | 5149 | |
4e54795a AV |
5150 | mutex_lock(&devlink->lock); |
5151 | ||
5152 | if (!attrs[DEVLINK_ATTR_REGION_NAME] || | |
fdd41ec2 PP |
5153 | !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) { |
5154 | err = -EINVAL; | |
4e54795a | 5155 | goto out_unlock; |
fdd41ec2 | 5156 | } |
4e54795a | 5157 | |
544e7c33 AL |
5158 | if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { |
5159 | index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
5160 | ||
5161 | port = devlink_port_get_by_index(devlink, index); | |
0d8cb946 DC |
5162 | if (!port) { |
5163 | err = -ENODEV; | |
5164 | goto out_unlock; | |
5165 | } | |
544e7c33 AL |
5166 | } |
5167 | ||
4e54795a | 5168 | region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]); |
544e7c33 AL |
5169 | |
5170 | if (port) | |
5171 | region = devlink_port_region_get_by_name(port, region_name); | |
5172 | else | |
5173 | region = devlink_region_get_by_name(devlink, region_name); | |
5174 | ||
fdd41ec2 PP |
5175 | if (!region) { |
5176 | err = -EINVAL; | |
4e54795a | 5177 | goto out_unlock; |
fdd41ec2 | 5178 | } |
4e54795a | 5179 | |
5a46b062 JK |
5180 | if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] && |
5181 | attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) { | |
5182 | if (!start_offset) | |
5183 | start_offset = | |
5184 | nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); | |
5185 | ||
5186 | end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); | |
5187 | end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]); | |
5188 | } | |
5189 | ||
5190 | if (end_offset > region->size) | |
5191 | end_offset = region->size; | |
5192 | ||
d5b90e99 | 5193 | /* return 0 if there is no further data to read */ |
5a46b062 | 5194 | if (start_offset == end_offset) { |
d5b90e99 JK |
5195 | err = 0; |
5196 | goto out_unlock; | |
5197 | } | |
5198 | ||
4e54795a AV |
5199 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
5200 | &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, | |
5201 | DEVLINK_CMD_REGION_READ); | |
fdd41ec2 PP |
5202 | if (!hdr) { |
5203 | err = -EMSGSIZE; | |
4e54795a | 5204 | goto out_unlock; |
fdd41ec2 | 5205 | } |
4e54795a AV |
5206 | |
5207 | err = devlink_nl_put_handle(skb, devlink); | |
5208 | if (err) | |
5209 | goto nla_put_failure; | |
5210 | ||
6c211809 DC |
5211 | if (region->port) { |
5212 | err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX, | |
5213 | region->port->index); | |
5214 | if (err) | |
544e7c33 | 5215 | goto nla_put_failure; |
6c211809 | 5216 | } |
544e7c33 | 5217 | |
4e54795a AV |
5218 | err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name); |
5219 | if (err) | |
5220 | goto nla_put_failure; | |
5221 | ||
ae0be8de | 5222 | chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS); |
fdd41ec2 PP |
5223 | if (!chunks_attr) { |
5224 | err = -EMSGSIZE; | |
4e54795a | 5225 | goto nla_put_failure; |
fdd41ec2 | 5226 | } |
4e54795a | 5227 | |
4e54795a AV |
5228 | err = devlink_nl_region_read_snapshot_fill(skb, devlink, |
5229 | region, attrs, | |
5230 | start_offset, | |
5a46b062 | 5231 | end_offset, &ret_offset); |
4e54795a AV |
5232 | |
5233 | if (err && err != -EMSGSIZE) | |
5234 | goto nla_put_failure; | |
5235 | ||
5236 | /* Check if there was any progress done to prevent infinite loop */ | |
fdd41ec2 PP |
5237 | if (ret_offset == start_offset) { |
5238 | err = -EINVAL; | |
4e54795a | 5239 | goto nla_put_failure; |
fdd41ec2 | 5240 | } |
4e54795a AV |
5241 | |
5242 | *((u64 *)&cb->args[0]) = ret_offset; | |
5243 | ||
5244 | nla_nest_end(skb, chunks_attr); | |
5245 | genlmsg_end(skb, hdr); | |
5246 | mutex_unlock(&devlink->lock); | |
5247 | mutex_unlock(&devlink_mutex); | |
5248 | ||
5249 | return skb->len; | |
5250 | ||
5251 | nla_put_failure: | |
5252 | genlmsg_cancel(skb, hdr); | |
5253 | out_unlock: | |
5254 | mutex_unlock(&devlink->lock); | |
dac7c08f | 5255 | out_dev: |
4e54795a | 5256 | mutex_unlock(&devlink_mutex); |
fdd41ec2 | 5257 | return err; |
4e54795a AV |
5258 | } |
5259 | ||
f9cf2288 JK |
5260 | struct devlink_info_req { |
5261 | struct sk_buff *msg; | |
5262 | }; | |
5263 | ||
5264 | int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name) | |
5265 | { | |
5266 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name); | |
5267 | } | |
5268 | EXPORT_SYMBOL_GPL(devlink_info_driver_name_put); | |
5269 | ||
5270 | int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn) | |
5271 | { | |
5272 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn); | |
5273 | } | |
5274 | EXPORT_SYMBOL_GPL(devlink_info_serial_number_put); | |
5275 | ||
b5872cd0 VV |
5276 | int devlink_info_board_serial_number_put(struct devlink_info_req *req, |
5277 | const char *bsn) | |
5278 | { | |
5279 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER, | |
5280 | bsn); | |
5281 | } | |
5282 | EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put); | |
5283 | ||
fc6fae7d JK |
5284 | static int devlink_info_version_put(struct devlink_info_req *req, int attr, |
5285 | const char *version_name, | |
5286 | const char *version_value) | |
5287 | { | |
5288 | struct nlattr *nest; | |
5289 | int err; | |
5290 | ||
ae0be8de | 5291 | nest = nla_nest_start_noflag(req->msg, attr); |
fc6fae7d JK |
5292 | if (!nest) |
5293 | return -EMSGSIZE; | |
5294 | ||
5295 | err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME, | |
5296 | version_name); | |
5297 | if (err) | |
5298 | goto nla_put_failure; | |
5299 | ||
5300 | err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE, | |
5301 | version_value); | |
5302 | if (err) | |
5303 | goto nla_put_failure; | |
5304 | ||
5305 | nla_nest_end(req->msg, nest); | |
5306 | ||
5307 | return 0; | |
5308 | ||
5309 | nla_put_failure: | |
5310 | nla_nest_cancel(req->msg, nest); | |
5311 | return err; | |
5312 | } | |
5313 | ||
5314 | int devlink_info_version_fixed_put(struct devlink_info_req *req, | |
5315 | const char *version_name, | |
5316 | const char *version_value) | |
5317 | { | |
5318 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED, | |
5319 | version_name, version_value); | |
5320 | } | |
5321 | EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put); | |
5322 | ||
5323 | int devlink_info_version_stored_put(struct devlink_info_req *req, | |
5324 | const char *version_name, | |
5325 | const char *version_value) | |
5326 | { | |
5327 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED, | |
5328 | version_name, version_value); | |
5329 | } | |
5330 | EXPORT_SYMBOL_GPL(devlink_info_version_stored_put); | |
5331 | ||
5332 | int devlink_info_version_running_put(struct devlink_info_req *req, | |
5333 | const char *version_name, | |
5334 | const char *version_value) | |
5335 | { | |
5336 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING, | |
5337 | version_name, version_value); | |
5338 | } | |
5339 | EXPORT_SYMBOL_GPL(devlink_info_version_running_put); | |
5340 | ||
f9cf2288 JK |
5341 | static int |
5342 | devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink, | |
5343 | enum devlink_command cmd, u32 portid, | |
5344 | u32 seq, int flags, struct netlink_ext_ack *extack) | |
5345 | { | |
5346 | struct devlink_info_req req; | |
5347 | void *hdr; | |
5348 | int err; | |
5349 | ||
5350 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
5351 | if (!hdr) | |
5352 | return -EMSGSIZE; | |
5353 | ||
5354 | err = -EMSGSIZE; | |
5355 | if (devlink_nl_put_handle(msg, devlink)) | |
5356 | goto err_cancel_msg; | |
5357 | ||
5358 | req.msg = msg; | |
5359 | err = devlink->ops->info_get(devlink, &req, extack); | |
5360 | if (err) | |
5361 | goto err_cancel_msg; | |
5362 | ||
5363 | genlmsg_end(msg, hdr); | |
5364 | return 0; | |
5365 | ||
5366 | err_cancel_msg: | |
5367 | genlmsg_cancel(msg, hdr); | |
5368 | return err; | |
5369 | } | |
5370 | ||
5371 | static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb, | |
5372 | struct genl_info *info) | |
5373 | { | |
5374 | struct devlink *devlink = info->user_ptr[0]; | |
5375 | struct sk_buff *msg; | |
5376 | int err; | |
5377 | ||
be6fe1d8 | 5378 | if (!devlink->ops->info_get) |
f9cf2288 JK |
5379 | return -EOPNOTSUPP; |
5380 | ||
5381 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5382 | if (!msg) | |
5383 | return -ENOMEM; | |
5384 | ||
5385 | err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, | |
5386 | info->snd_portid, info->snd_seq, 0, | |
5387 | info->extack); | |
5388 | if (err) { | |
5389 | nlmsg_free(msg); | |
5390 | return err; | |
5391 | } | |
5392 | ||
5393 | return genlmsg_reply(msg, info); | |
5394 | } | |
5395 | ||
5396 | static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg, | |
5397 | struct netlink_callback *cb) | |
5398 | { | |
5399 | struct devlink *devlink; | |
5400 | int start = cb->args[0]; | |
5401 | int idx = 0; | |
c62c2cfb | 5402 | int err = 0; |
f9cf2288 JK |
5403 | |
5404 | mutex_lock(&devlink_mutex); | |
5405 | list_for_each_entry(devlink, &devlink_list, list) { | |
5406 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
5407 | continue; | |
5408 | if (idx < start) { | |
5409 | idx++; | |
5410 | continue; | |
5411 | } | |
5412 | ||
c493b09b JP |
5413 | if (!devlink->ops->info_get) { |
5414 | idx++; | |
5415 | continue; | |
5416 | } | |
5417 | ||
f9cf2288 JK |
5418 | mutex_lock(&devlink->lock); |
5419 | err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, | |
5420 | NETLINK_CB(cb->skb).portid, | |
5421 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
5422 | cb->extack); | |
5423 | mutex_unlock(&devlink->lock); | |
82274d07 JK |
5424 | if (err == -EOPNOTSUPP) |
5425 | err = 0; | |
5426 | else if (err) | |
f9cf2288 JK |
5427 | break; |
5428 | idx++; | |
5429 | } | |
5430 | mutex_unlock(&devlink_mutex); | |
5431 | ||
c62c2cfb JP |
5432 | if (err != -EMSGSIZE) |
5433 | return err; | |
5434 | ||
f9cf2288 JK |
5435 | cb->args[0] = idx; |
5436 | return msg->len; | |
5437 | } | |
5438 | ||
1db64e87 EBE |
5439 | struct devlink_fmsg_item { |
5440 | struct list_head list; | |
5441 | int attrtype; | |
5442 | u8 nla_type; | |
5443 | u16 len; | |
d2afb41a | 5444 | int value[]; |
1db64e87 EBE |
5445 | }; |
5446 | ||
5447 | struct devlink_fmsg { | |
5448 | struct list_head item_list; | |
573ed90a AL |
5449 | bool putting_binary; /* This flag forces enclosing of binary data |
5450 | * in an array brackets. It forces using | |
5451 | * of designated API: | |
5452 | * devlink_fmsg_binary_pair_nest_start() | |
5453 | * devlink_fmsg_binary_pair_nest_end() | |
5454 | */ | |
1db64e87 EBE |
5455 | }; |
5456 | ||
5457 | static struct devlink_fmsg *devlink_fmsg_alloc(void) | |
5458 | { | |
5459 | struct devlink_fmsg *fmsg; | |
5460 | ||
5461 | fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL); | |
5462 | if (!fmsg) | |
5463 | return NULL; | |
5464 | ||
5465 | INIT_LIST_HEAD(&fmsg->item_list); | |
5466 | ||
5467 | return fmsg; | |
5468 | } | |
5469 | ||
5470 | static void devlink_fmsg_free(struct devlink_fmsg *fmsg) | |
5471 | { | |
5472 | struct devlink_fmsg_item *item, *tmp; | |
5473 | ||
5474 | list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) { | |
5475 | list_del(&item->list); | |
5476 | kfree(item); | |
5477 | } | |
5478 | kfree(fmsg); | |
5479 | } | |
5480 | ||
5481 | static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg, | |
5482 | int attrtype) | |
5483 | { | |
5484 | struct devlink_fmsg_item *item; | |
5485 | ||
5486 | item = kzalloc(sizeof(*item), GFP_KERNEL); | |
5487 | if (!item) | |
5488 | return -ENOMEM; | |
5489 | ||
5490 | item->attrtype = attrtype; | |
5491 | list_add_tail(&item->list, &fmsg->item_list); | |
5492 | ||
5493 | return 0; | |
5494 | } | |
5495 | ||
5496 | int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg) | |
5497 | { | |
573ed90a AL |
5498 | if (fmsg->putting_binary) |
5499 | return -EINVAL; | |
5500 | ||
1db64e87 EBE |
5501 | return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START); |
5502 | } | |
5503 | EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start); | |
5504 | ||
5505 | static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg) | |
5506 | { | |
573ed90a AL |
5507 | if (fmsg->putting_binary) |
5508 | return -EINVAL; | |
5509 | ||
1db64e87 EBE |
5510 | return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END); |
5511 | } | |
5512 | ||
5513 | int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg) | |
5514 | { | |
573ed90a AL |
5515 | if (fmsg->putting_binary) |
5516 | return -EINVAL; | |
5517 | ||
1db64e87 EBE |
5518 | return devlink_fmsg_nest_end(fmsg); |
5519 | } | |
5520 | EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end); | |
5521 | ||
5522 | #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN) | |
5523 | ||
5524 | static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name) | |
5525 | { | |
5526 | struct devlink_fmsg_item *item; | |
5527 | ||
573ed90a AL |
5528 | if (fmsg->putting_binary) |
5529 | return -EINVAL; | |
5530 | ||
1db64e87 EBE |
5531 | if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE) |
5532 | return -EMSGSIZE; | |
5533 | ||
5534 | item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL); | |
5535 | if (!item) | |
5536 | return -ENOMEM; | |
5537 | ||
5538 | item->nla_type = NLA_NUL_STRING; | |
5539 | item->len = strlen(name) + 1; | |
5540 | item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME; | |
5541 | memcpy(&item->value, name, item->len); | |
5542 | list_add_tail(&item->list, &fmsg->item_list); | |
5543 | ||
5544 | return 0; | |
5545 | } | |
5546 | ||
5547 | int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name) | |
5548 | { | |
5549 | int err; | |
5550 | ||
573ed90a AL |
5551 | if (fmsg->putting_binary) |
5552 | return -EINVAL; | |
5553 | ||
1db64e87 EBE |
5554 | err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START); |
5555 | if (err) | |
5556 | return err; | |
5557 | ||
5558 | err = devlink_fmsg_put_name(fmsg, name); | |
5559 | if (err) | |
5560 | return err; | |
5561 | ||
5562 | return 0; | |
5563 | } | |
5564 | EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start); | |
5565 | ||
5566 | int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg) | |
5567 | { | |
573ed90a AL |
5568 | if (fmsg->putting_binary) |
5569 | return -EINVAL; | |
5570 | ||
1db64e87 EBE |
5571 | return devlink_fmsg_nest_end(fmsg); |
5572 | } | |
5573 | EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end); | |
5574 | ||
5575 | int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg, | |
5576 | const char *name) | |
5577 | { | |
5578 | int err; | |
5579 | ||
573ed90a AL |
5580 | if (fmsg->putting_binary) |
5581 | return -EINVAL; | |
5582 | ||
1db64e87 EBE |
5583 | err = devlink_fmsg_pair_nest_start(fmsg, name); |
5584 | if (err) | |
5585 | return err; | |
5586 | ||
5587 | err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START); | |
5588 | if (err) | |
5589 | return err; | |
5590 | ||
5591 | return 0; | |
5592 | } | |
5593 | EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start); | |
5594 | ||
5595 | int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg) | |
5596 | { | |
5597 | int err; | |
5598 | ||
573ed90a AL |
5599 | if (fmsg->putting_binary) |
5600 | return -EINVAL; | |
5601 | ||
1db64e87 EBE |
5602 | err = devlink_fmsg_nest_end(fmsg); |
5603 | if (err) | |
5604 | return err; | |
5605 | ||
5606 | err = devlink_fmsg_nest_end(fmsg); | |
5607 | if (err) | |
5608 | return err; | |
5609 | ||
5610 | return 0; | |
5611 | } | |
5612 | EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end); | |
5613 | ||
573ed90a AL |
5614 | int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg, |
5615 | const char *name) | |
5616 | { | |
5617 | int err; | |
5618 | ||
5619 | err = devlink_fmsg_arr_pair_nest_start(fmsg, name); | |
5620 | if (err) | |
5621 | return err; | |
5622 | ||
5623 | fmsg->putting_binary = true; | |
5624 | return err; | |
5625 | } | |
5626 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start); | |
5627 | ||
5628 | int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg) | |
5629 | { | |
5630 | if (!fmsg->putting_binary) | |
5631 | return -EINVAL; | |
5632 | ||
5633 | fmsg->putting_binary = false; | |
5634 | return devlink_fmsg_arr_pair_nest_end(fmsg); | |
5635 | } | |
5636 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end); | |
5637 | ||
1db64e87 EBE |
5638 | static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg, |
5639 | const void *value, u16 value_len, | |
5640 | u8 value_nla_type) | |
5641 | { | |
5642 | struct devlink_fmsg_item *item; | |
5643 | ||
5644 | if (value_len > DEVLINK_FMSG_MAX_SIZE) | |
5645 | return -EMSGSIZE; | |
5646 | ||
5647 | item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL); | |
5648 | if (!item) | |
5649 | return -ENOMEM; | |
5650 | ||
5651 | item->nla_type = value_nla_type; | |
5652 | item->len = value_len; | |
5653 | item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA; | |
5654 | memcpy(&item->value, value, item->len); | |
5655 | list_add_tail(&item->list, &fmsg->item_list); | |
5656 | ||
5657 | return 0; | |
5658 | } | |
5659 | ||
5660 | int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value) | |
5661 | { | |
573ed90a AL |
5662 | if (fmsg->putting_binary) |
5663 | return -EINVAL; | |
5664 | ||
1db64e87 EBE |
5665 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG); |
5666 | } | |
5667 | EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put); | |
5668 | ||
5669 | int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value) | |
5670 | { | |
573ed90a AL |
5671 | if (fmsg->putting_binary) |
5672 | return -EINVAL; | |
5673 | ||
1db64e87 EBE |
5674 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8); |
5675 | } | |
5676 | EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put); | |
5677 | ||
5678 | int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value) | |
5679 | { | |
573ed90a AL |
5680 | if (fmsg->putting_binary) |
5681 | return -EINVAL; | |
5682 | ||
1db64e87 EBE |
5683 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32); |
5684 | } | |
5685 | EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put); | |
5686 | ||
5687 | int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value) | |
5688 | { | |
573ed90a AL |
5689 | if (fmsg->putting_binary) |
5690 | return -EINVAL; | |
5691 | ||
1db64e87 EBE |
5692 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64); |
5693 | } | |
5694 | EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put); | |
5695 | ||
5696 | int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value) | |
5697 | { | |
573ed90a AL |
5698 | if (fmsg->putting_binary) |
5699 | return -EINVAL; | |
5700 | ||
1db64e87 EBE |
5701 | return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1, |
5702 | NLA_NUL_STRING); | |
5703 | } | |
5704 | EXPORT_SYMBOL_GPL(devlink_fmsg_string_put); | |
5705 | ||
573ed90a AL |
5706 | int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value, |
5707 | u16 value_len) | |
1db64e87 | 5708 | { |
573ed90a AL |
5709 | if (!fmsg->putting_binary) |
5710 | return -EINVAL; | |
5711 | ||
1db64e87 EBE |
5712 | return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY); |
5713 | } | |
573ed90a | 5714 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put); |
1db64e87 EBE |
5715 | |
5716 | int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5717 | bool value) | |
5718 | { | |
5719 | int err; | |
5720 | ||
5721 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5722 | if (err) | |
5723 | return err; | |
5724 | ||
5725 | err = devlink_fmsg_bool_put(fmsg, value); | |
5726 | if (err) | |
5727 | return err; | |
5728 | ||
5729 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5730 | if (err) | |
5731 | return err; | |
5732 | ||
5733 | return 0; | |
5734 | } | |
5735 | EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put); | |
5736 | ||
5737 | int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5738 | u8 value) | |
5739 | { | |
5740 | int err; | |
5741 | ||
5742 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5743 | if (err) | |
5744 | return err; | |
5745 | ||
5746 | err = devlink_fmsg_u8_put(fmsg, value); | |
5747 | if (err) | |
5748 | return err; | |
5749 | ||
5750 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5751 | if (err) | |
5752 | return err; | |
5753 | ||
5754 | return 0; | |
5755 | } | |
5756 | EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put); | |
5757 | ||
5758 | int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5759 | u32 value) | |
5760 | { | |
5761 | int err; | |
5762 | ||
5763 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5764 | if (err) | |
5765 | return err; | |
5766 | ||
5767 | err = devlink_fmsg_u32_put(fmsg, value); | |
5768 | if (err) | |
5769 | return err; | |
5770 | ||
5771 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5772 | if (err) | |
5773 | return err; | |
5774 | ||
5775 | return 0; | |
5776 | } | |
5777 | EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put); | |
5778 | ||
5779 | int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5780 | u64 value) | |
5781 | { | |
5782 | int err; | |
5783 | ||
5784 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5785 | if (err) | |
5786 | return err; | |
5787 | ||
5788 | err = devlink_fmsg_u64_put(fmsg, value); | |
5789 | if (err) | |
5790 | return err; | |
5791 | ||
5792 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5793 | if (err) | |
5794 | return err; | |
5795 | ||
5796 | return 0; | |
5797 | } | |
5798 | EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put); | |
5799 | ||
5800 | int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5801 | const char *value) | |
5802 | { | |
5803 | int err; | |
5804 | ||
5805 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5806 | if (err) | |
5807 | return err; | |
5808 | ||
5809 | err = devlink_fmsg_string_put(fmsg, value); | |
5810 | if (err) | |
5811 | return err; | |
5812 | ||
5813 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5814 | if (err) | |
5815 | return err; | |
5816 | ||
5817 | return 0; | |
5818 | } | |
5819 | EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put); | |
5820 | ||
5821 | int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
e2cde864 | 5822 | const void *value, u32 value_len) |
1db64e87 | 5823 | { |
e2cde864 | 5824 | u32 data_size; |
573ed90a | 5825 | int end_err; |
e2cde864 | 5826 | u32 offset; |
1db64e87 EBE |
5827 | int err; |
5828 | ||
573ed90a | 5829 | err = devlink_fmsg_binary_pair_nest_start(fmsg, name); |
1db64e87 EBE |
5830 | if (err) |
5831 | return err; | |
5832 | ||
e2cde864 AL |
5833 | for (offset = 0; offset < value_len; offset += data_size) { |
5834 | data_size = value_len - offset; | |
5835 | if (data_size > DEVLINK_FMSG_MAX_SIZE) | |
5836 | data_size = DEVLINK_FMSG_MAX_SIZE; | |
5837 | err = devlink_fmsg_binary_put(fmsg, value + offset, data_size); | |
5838 | if (err) | |
573ed90a AL |
5839 | break; |
5840 | /* Exit from loop with a break (instead of | |
5841 | * return) to make sure putting_binary is turned off in | |
5842 | * devlink_fmsg_binary_pair_nest_end | |
5843 | */ | |
e2cde864 | 5844 | } |
1db64e87 | 5845 | |
573ed90a AL |
5846 | end_err = devlink_fmsg_binary_pair_nest_end(fmsg); |
5847 | if (end_err) | |
5848 | err = end_err; | |
1db64e87 | 5849 | |
573ed90a | 5850 | return err; |
1db64e87 EBE |
5851 | } |
5852 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put); | |
5853 | ||
5854 | static int | |
5855 | devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb) | |
5856 | { | |
5857 | switch (msg->nla_type) { | |
5858 | case NLA_FLAG: | |
5859 | case NLA_U8: | |
5860 | case NLA_U32: | |
5861 | case NLA_U64: | |
5862 | case NLA_NUL_STRING: | |
5863 | case NLA_BINARY: | |
5864 | return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE, | |
5865 | msg->nla_type); | |
5866 | default: | |
5867 | return -EINVAL; | |
5868 | } | |
5869 | } | |
5870 | ||
5871 | static int | |
5872 | devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb) | |
5873 | { | |
5874 | int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA; | |
5875 | u8 tmp; | |
5876 | ||
5877 | switch (msg->nla_type) { | |
5878 | case NLA_FLAG: | |
5879 | /* Always provide flag data, regardless of its value */ | |
5880 | tmp = *(bool *) msg->value; | |
5881 | ||
5882 | return nla_put_u8(skb, attrtype, tmp); | |
5883 | case NLA_U8: | |
5884 | return nla_put_u8(skb, attrtype, *(u8 *) msg->value); | |
5885 | case NLA_U32: | |
5886 | return nla_put_u32(skb, attrtype, *(u32 *) msg->value); | |
5887 | case NLA_U64: | |
5888 | return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value, | |
5889 | DEVLINK_ATTR_PAD); | |
5890 | case NLA_NUL_STRING: | |
5891 | return nla_put_string(skb, attrtype, (char *) &msg->value); | |
5892 | case NLA_BINARY: | |
5893 | return nla_put(skb, attrtype, msg->len, (void *) &msg->value); | |
5894 | default: | |
5895 | return -EINVAL; | |
5896 | } | |
5897 | } | |
5898 | ||
5899 | static int | |
5900 | devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb, | |
5901 | int *start) | |
5902 | { | |
5903 | struct devlink_fmsg_item *item; | |
5904 | struct nlattr *fmsg_nlattr; | |
5905 | int i = 0; | |
5906 | int err; | |
5907 | ||
ae0be8de | 5908 | fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG); |
1db64e87 EBE |
5909 | if (!fmsg_nlattr) |
5910 | return -EMSGSIZE; | |
5911 | ||
5912 | list_for_each_entry(item, &fmsg->item_list, list) { | |
5913 | if (i < *start) { | |
5914 | i++; | |
5915 | continue; | |
5916 | } | |
5917 | ||
5918 | switch (item->attrtype) { | |
5919 | case DEVLINK_ATTR_FMSG_OBJ_NEST_START: | |
5920 | case DEVLINK_ATTR_FMSG_PAIR_NEST_START: | |
5921 | case DEVLINK_ATTR_FMSG_ARR_NEST_START: | |
5922 | case DEVLINK_ATTR_FMSG_NEST_END: | |
5923 | err = nla_put_flag(skb, item->attrtype); | |
5924 | break; | |
5925 | case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA: | |
5926 | err = devlink_fmsg_item_fill_type(item, skb); | |
5927 | if (err) | |
5928 | break; | |
5929 | err = devlink_fmsg_item_fill_data(item, skb); | |
5930 | break; | |
5931 | case DEVLINK_ATTR_FMSG_OBJ_NAME: | |
5932 | err = nla_put_string(skb, item->attrtype, | |
5933 | (char *) &item->value); | |
5934 | break; | |
5935 | default: | |
5936 | err = -EINVAL; | |
5937 | break; | |
5938 | } | |
5939 | if (!err) | |
5940 | *start = ++i; | |
5941 | else | |
5942 | break; | |
5943 | } | |
5944 | ||
5945 | nla_nest_end(skb, fmsg_nlattr); | |
5946 | return err; | |
5947 | } | |
5948 | ||
5949 | static int devlink_fmsg_snd(struct devlink_fmsg *fmsg, | |
5950 | struct genl_info *info, | |
5951 | enum devlink_command cmd, int flags) | |
5952 | { | |
5953 | struct nlmsghdr *nlh; | |
5954 | struct sk_buff *skb; | |
5955 | bool last = false; | |
5956 | int index = 0; | |
5957 | void *hdr; | |
5958 | int err; | |
5959 | ||
5960 | while (!last) { | |
5961 | int tmp_index = index; | |
5962 | ||
5963 | skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5964 | if (!skb) | |
5965 | return -ENOMEM; | |
5966 | ||
5967 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
5968 | &devlink_nl_family, flags | NLM_F_MULTI, cmd); | |
5969 | if (!hdr) { | |
5970 | err = -EMSGSIZE; | |
5971 | goto nla_put_failure; | |
5972 | } | |
5973 | ||
5974 | err = devlink_fmsg_prepare_skb(fmsg, skb, &index); | |
5975 | if (!err) | |
5976 | last = true; | |
5977 | else if (err != -EMSGSIZE || tmp_index == index) | |
5978 | goto nla_put_failure; | |
5979 | ||
5980 | genlmsg_end(skb, hdr); | |
5981 | err = genlmsg_reply(skb, info); | |
5982 | if (err) | |
5983 | return err; | |
5984 | } | |
5985 | ||
5986 | skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5987 | if (!skb) | |
5988 | return -ENOMEM; | |
5989 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
5990 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
5991 | if (!nlh) { | |
5992 | err = -EMSGSIZE; | |
5993 | goto nla_put_failure; | |
5994 | } | |
1db64e87 | 5995 | |
fde55ea7 | 5996 | return genlmsg_reply(skb, info); |
1db64e87 EBE |
5997 | |
5998 | nla_put_failure: | |
5999 | nlmsg_free(skb); | |
6000 | return err; | |
6001 | } | |
6002 | ||
e44ef4e4 AL |
6003 | static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb, |
6004 | struct netlink_callback *cb, | |
6005 | enum devlink_command cmd) | |
6006 | { | |
6007 | int index = cb->args[0]; | |
6008 | int tmp_index = index; | |
6009 | void *hdr; | |
6010 | int err; | |
6011 | ||
6012 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, | |
6013 | &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd); | |
6014 | if (!hdr) { | |
6015 | err = -EMSGSIZE; | |
6016 | goto nla_put_failure; | |
6017 | } | |
6018 | ||
6019 | err = devlink_fmsg_prepare_skb(fmsg, skb, &index); | |
6020 | if ((err && err != -EMSGSIZE) || tmp_index == index) | |
6021 | goto nla_put_failure; | |
6022 | ||
6023 | cb->args[0] = index; | |
6024 | genlmsg_end(skb, hdr); | |
6025 | return skb->len; | |
6026 | ||
6027 | nla_put_failure: | |
6028 | genlmsg_cancel(skb, hdr); | |
6029 | return err; | |
6030 | } | |
6031 | ||
a0bdcc59 EBE |
6032 | struct devlink_health_reporter { |
6033 | struct list_head list; | |
6034 | void *priv; | |
6035 | const struct devlink_health_reporter_ops *ops; | |
6036 | struct devlink *devlink; | |
f4f54166 | 6037 | struct devlink_port *devlink_port; |
c8e1da0b EBE |
6038 | struct devlink_fmsg *dump_fmsg; |
6039 | struct mutex dump_lock; /* lock parallel read/write from dump buffers */ | |
a0bdcc59 EBE |
6040 | u64 graceful_period; |
6041 | bool auto_recover; | |
48bb52c8 | 6042 | bool auto_dump; |
a0bdcc59 | 6043 | u8 health_state; |
c8e1da0b | 6044 | u64 dump_ts; |
d279505b | 6045 | u64 dump_real_ts; |
c8e1da0b EBE |
6046 | u64 error_count; |
6047 | u64 recovery_count; | |
6048 | u64 last_recovery_ts; | |
b587bdaf | 6049 | refcount_t refcount; |
c8e1da0b EBE |
6050 | }; |
6051 | ||
a0bdcc59 EBE |
6052 | void * |
6053 | devlink_health_reporter_priv(struct devlink_health_reporter *reporter) | |
6054 | { | |
6055 | return reporter->priv; | |
6056 | } | |
6057 | EXPORT_SYMBOL_GPL(devlink_health_reporter_priv); | |
6058 | ||
6059 | static struct devlink_health_reporter * | |
bd821005 VT |
6060 | __devlink_health_reporter_find_by_name(struct list_head *reporter_list, |
6061 | struct mutex *list_lock, | |
6062 | const char *reporter_name) | |
a0bdcc59 EBE |
6063 | { |
6064 | struct devlink_health_reporter *reporter; | |
6065 | ||
bd821005 VT |
6066 | lockdep_assert_held(list_lock); |
6067 | list_for_each_entry(reporter, reporter_list, list) | |
a0bdcc59 EBE |
6068 | if (!strcmp(reporter->ops->name, reporter_name)) |
6069 | return reporter; | |
6070 | return NULL; | |
6071 | } | |
6072 | ||
bd821005 VT |
6073 | static struct devlink_health_reporter * |
6074 | devlink_health_reporter_find_by_name(struct devlink *devlink, | |
6075 | const char *reporter_name) | |
6076 | { | |
6077 | return __devlink_health_reporter_find_by_name(&devlink->reporter_list, | |
6078 | &devlink->reporters_lock, | |
6079 | reporter_name); | |
6080 | } | |
6081 | ||
f4f54166 VT |
6082 | static struct devlink_health_reporter * |
6083 | devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port, | |
6084 | const char *reporter_name) | |
6085 | { | |
6086 | return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list, | |
6087 | &devlink_port->reporters_lock, | |
6088 | reporter_name); | |
6089 | } | |
6090 | ||
c57544b3 VT |
6091 | static struct devlink_health_reporter * |
6092 | __devlink_health_reporter_create(struct devlink *devlink, | |
6093 | const struct devlink_health_reporter_ops *ops, | |
6094 | u64 graceful_period, void *priv) | |
6095 | { | |
6096 | struct devlink_health_reporter *reporter; | |
6097 | ||
6098 | if (WARN_ON(graceful_period && !ops->recover)) | |
6099 | return ERR_PTR(-EINVAL); | |
6100 | ||
6101 | reporter = kzalloc(sizeof(*reporter), GFP_KERNEL); | |
6102 | if (!reporter) | |
6103 | return ERR_PTR(-ENOMEM); | |
6104 | ||
6105 | reporter->priv = priv; | |
6106 | reporter->ops = ops; | |
6107 | reporter->devlink = devlink; | |
6108 | reporter->graceful_period = graceful_period; | |
6109 | reporter->auto_recover = !!ops->recover; | |
6110 | reporter->auto_dump = !!ops->dump; | |
6111 | mutex_init(&reporter->dump_lock); | |
6112 | refcount_set(&reporter->refcount, 1); | |
6113 | return reporter; | |
6114 | } | |
6115 | ||
15c724b9 VT |
6116 | /** |
6117 | * devlink_port_health_reporter_create - create devlink health reporter for | |
6118 | * specified port instance | |
6119 | * | |
6120 | * @port: devlink_port which should contain the new reporter | |
6121 | * @ops: ops | |
6122 | * @graceful_period: to avoid recovery loops, in msecs | |
6123 | * @priv: priv | |
6124 | */ | |
6125 | struct devlink_health_reporter * | |
6126 | devlink_port_health_reporter_create(struct devlink_port *port, | |
6127 | const struct devlink_health_reporter_ops *ops, | |
6128 | u64 graceful_period, void *priv) | |
6129 | { | |
6130 | struct devlink_health_reporter *reporter; | |
6131 | ||
6132 | mutex_lock(&port->reporters_lock); | |
6133 | if (__devlink_health_reporter_find_by_name(&port->reporter_list, | |
6134 | &port->reporters_lock, ops->name)) { | |
6135 | reporter = ERR_PTR(-EEXIST); | |
6136 | goto unlock; | |
6137 | } | |
6138 | ||
6139 | reporter = __devlink_health_reporter_create(port->devlink, ops, | |
6140 | graceful_period, priv); | |
6141 | if (IS_ERR(reporter)) | |
6142 | goto unlock; | |
6143 | ||
6144 | reporter->devlink_port = port; | |
6145 | list_add_tail(&reporter->list, &port->reporter_list); | |
6146 | unlock: | |
6147 | mutex_unlock(&port->reporters_lock); | |
6148 | return reporter; | |
6149 | } | |
6150 | EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create); | |
6151 | ||
a0bdcc59 EBE |
6152 | /** |
6153 | * devlink_health_reporter_create - create devlink health reporter | |
6154 | * | |
6155 | * @devlink: devlink | |
6156 | * @ops: ops | |
6157 | * @graceful_period: to avoid recovery loops, in msecs | |
a0bdcc59 EBE |
6158 | * @priv: priv |
6159 | */ | |
6160 | struct devlink_health_reporter * | |
6161 | devlink_health_reporter_create(struct devlink *devlink, | |
6162 | const struct devlink_health_reporter_ops *ops, | |
ba7d16c7 | 6163 | u64 graceful_period, void *priv) |
a0bdcc59 EBE |
6164 | { |
6165 | struct devlink_health_reporter *reporter; | |
6166 | ||
b587bdaf | 6167 | mutex_lock(&devlink->reporters_lock); |
a0bdcc59 EBE |
6168 | if (devlink_health_reporter_find_by_name(devlink, ops->name)) { |
6169 | reporter = ERR_PTR(-EEXIST); | |
6170 | goto unlock; | |
6171 | } | |
6172 | ||
c57544b3 VT |
6173 | reporter = __devlink_health_reporter_create(devlink, ops, |
6174 | graceful_period, priv); | |
6175 | if (IS_ERR(reporter)) | |
a0bdcc59 | 6176 | goto unlock; |
a0bdcc59 | 6177 | |
a0bdcc59 EBE |
6178 | list_add_tail(&reporter->list, &devlink->reporter_list); |
6179 | unlock: | |
b587bdaf | 6180 | mutex_unlock(&devlink->reporters_lock); |
a0bdcc59 EBE |
6181 | return reporter; |
6182 | } | |
6183 | EXPORT_SYMBOL_GPL(devlink_health_reporter_create); | |
6184 | ||
3c5584bf VT |
6185 | static void |
6186 | devlink_health_reporter_free(struct devlink_health_reporter *reporter) | |
6187 | { | |
6188 | mutex_destroy(&reporter->dump_lock); | |
6189 | if (reporter->dump_fmsg) | |
6190 | devlink_fmsg_free(reporter->dump_fmsg); | |
6191 | kfree(reporter); | |
6192 | } | |
6193 | ||
6194 | static void | |
6195 | devlink_health_reporter_put(struct devlink_health_reporter *reporter) | |
6196 | { | |
6197 | if (refcount_dec_and_test(&reporter->refcount)) | |
6198 | devlink_health_reporter_free(reporter); | |
6199 | } | |
6200 | ||
6201 | static void | |
6202 | __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
6203 | { | |
6204 | list_del(&reporter->list); | |
6205 | devlink_health_reporter_put(reporter); | |
6206 | } | |
6207 | ||
a0bdcc59 EBE |
6208 | /** |
6209 | * devlink_health_reporter_destroy - destroy devlink health reporter | |
6210 | * | |
6211 | * @reporter: devlink health reporter to destroy | |
6212 | */ | |
6213 | void | |
6214 | devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
6215 | { | |
5d037b4d IS |
6216 | struct mutex *lock = &reporter->devlink->reporters_lock; |
6217 | ||
6218 | mutex_lock(lock); | |
3c5584bf | 6219 | __devlink_health_reporter_destroy(reporter); |
5d037b4d | 6220 | mutex_unlock(lock); |
a0bdcc59 EBE |
6221 | } |
6222 | EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy); | |
6223 | ||
15c724b9 VT |
6224 | /** |
6225 | * devlink_port_health_reporter_destroy - destroy devlink port health reporter | |
6226 | * | |
6227 | * @reporter: devlink health reporter to destroy | |
6228 | */ | |
6229 | void | |
6230 | devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
6231 | { | |
5d037b4d IS |
6232 | struct mutex *lock = &reporter->devlink_port->reporters_lock; |
6233 | ||
6234 | mutex_lock(lock); | |
15c724b9 | 6235 | __devlink_health_reporter_destroy(reporter); |
5d037b4d | 6236 | mutex_unlock(lock); |
15c724b9 VT |
6237 | } |
6238 | EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy); | |
6239 | ||
6ec8b6cd MS |
6240 | static int |
6241 | devlink_nl_health_reporter_fill(struct sk_buff *msg, | |
6242 | struct devlink *devlink, | |
6243 | struct devlink_health_reporter *reporter, | |
6244 | enum devlink_command cmd, u32 portid, | |
6245 | u32 seq, int flags) | |
6246 | { | |
6247 | struct nlattr *reporter_attr; | |
6248 | void *hdr; | |
6249 | ||
6250 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6251 | if (!hdr) | |
6252 | return -EMSGSIZE; | |
6253 | ||
6254 | if (devlink_nl_put_handle(msg, devlink)) | |
6255 | goto genlmsg_cancel; | |
6256 | ||
f4f54166 VT |
6257 | if (reporter->devlink_port) { |
6258 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index)) | |
6259 | goto genlmsg_cancel; | |
6260 | } | |
6ec8b6cd MS |
6261 | reporter_attr = nla_nest_start_noflag(msg, |
6262 | DEVLINK_ATTR_HEALTH_REPORTER); | |
6263 | if (!reporter_attr) | |
6264 | goto genlmsg_cancel; | |
6265 | if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME, | |
6266 | reporter->ops->name)) | |
6267 | goto reporter_nest_cancel; | |
6268 | if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE, | |
6269 | reporter->health_state)) | |
6270 | goto reporter_nest_cancel; | |
6271 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT, | |
6272 | reporter->error_count, DEVLINK_ATTR_PAD)) | |
6273 | goto reporter_nest_cancel; | |
6274 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT, | |
6275 | reporter->recovery_count, DEVLINK_ATTR_PAD)) | |
6276 | goto reporter_nest_cancel; | |
6277 | if (reporter->ops->recover && | |
6278 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD, | |
6279 | reporter->graceful_period, | |
6280 | DEVLINK_ATTR_PAD)) | |
6281 | goto reporter_nest_cancel; | |
6282 | if (reporter->ops->recover && | |
6283 | nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER, | |
6284 | reporter->auto_recover)) | |
6285 | goto reporter_nest_cancel; | |
6286 | if (reporter->dump_fmsg && | |
6287 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS, | |
6288 | jiffies_to_msecs(reporter->dump_ts), | |
6289 | DEVLINK_ATTR_PAD)) | |
6290 | goto reporter_nest_cancel; | |
6291 | if (reporter->dump_fmsg && | |
6292 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS, | |
6293 | reporter->dump_real_ts, DEVLINK_ATTR_PAD)) | |
6294 | goto reporter_nest_cancel; | |
48bb52c8 EBE |
6295 | if (reporter->ops->dump && |
6296 | nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP, | |
6297 | reporter->auto_dump)) | |
6298 | goto reporter_nest_cancel; | |
6ec8b6cd MS |
6299 | |
6300 | nla_nest_end(msg, reporter_attr); | |
6301 | genlmsg_end(msg, hdr); | |
6302 | return 0; | |
6303 | ||
6304 | reporter_nest_cancel: | |
6305 | nla_nest_end(msg, reporter_attr); | |
6306 | genlmsg_cancel: | |
6307 | genlmsg_cancel(msg, hdr); | |
6308 | return -EMSGSIZE; | |
6309 | } | |
6310 | ||
6311 | static void devlink_recover_notify(struct devlink_health_reporter *reporter, | |
6312 | enum devlink_command cmd) | |
6313 | { | |
6314 | struct sk_buff *msg; | |
6315 | int err; | |
6316 | ||
6317 | WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER); | |
6318 | ||
6319 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6320 | if (!msg) | |
6321 | return; | |
6322 | ||
6323 | err = devlink_nl_health_reporter_fill(msg, reporter->devlink, | |
6324 | reporter, cmd, 0, 0, 0); | |
6325 | if (err) { | |
6326 | nlmsg_free(msg); | |
6327 | return; | |
6328 | } | |
6329 | ||
6330 | genlmsg_multicast_netns(&devlink_nl_family, | |
6331 | devlink_net(reporter->devlink), | |
6332 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
6333 | } | |
6334 | ||
6181e5cb VG |
6335 | void |
6336 | devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter) | |
6337 | { | |
6338 | reporter->recovery_count++; | |
6339 | reporter->last_recovery_ts = jiffies; | |
6340 | } | |
6341 | EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done); | |
6342 | ||
c8e1da0b EBE |
6343 | static int |
6344 | devlink_health_reporter_recover(struct devlink_health_reporter *reporter, | |
e7a98105 | 6345 | void *priv_ctx, struct netlink_ext_ack *extack) |
c8e1da0b EBE |
6346 | { |
6347 | int err; | |
6348 | ||
40281820 JP |
6349 | if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY) |
6350 | return 0; | |
6351 | ||
c8e1da0b EBE |
6352 | if (!reporter->ops->recover) |
6353 | return -EOPNOTSUPP; | |
6354 | ||
e7a98105 | 6355 | err = reporter->ops->recover(reporter, priv_ctx, extack); |
c8e1da0b EBE |
6356 | if (err) |
6357 | return err; | |
6358 | ||
6181e5cb | 6359 | devlink_health_reporter_recovery_done(reporter); |
c8e1da0b | 6360 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY; |
6ec8b6cd | 6361 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); |
c8e1da0b EBE |
6362 | |
6363 | return 0; | |
6364 | } | |
6365 | ||
6366 | static void | |
6367 | devlink_health_dump_clear(struct devlink_health_reporter *reporter) | |
6368 | { | |
6369 | if (!reporter->dump_fmsg) | |
6370 | return; | |
6371 | devlink_fmsg_free(reporter->dump_fmsg); | |
6372 | reporter->dump_fmsg = NULL; | |
6373 | } | |
6374 | ||
6375 | static int devlink_health_do_dump(struct devlink_health_reporter *reporter, | |
e7a98105 JP |
6376 | void *priv_ctx, |
6377 | struct netlink_ext_ack *extack) | |
c8e1da0b EBE |
6378 | { |
6379 | int err; | |
6380 | ||
6381 | if (!reporter->ops->dump) | |
6382 | return 0; | |
6383 | ||
6384 | if (reporter->dump_fmsg) | |
6385 | return 0; | |
6386 | ||
6387 | reporter->dump_fmsg = devlink_fmsg_alloc(); | |
6388 | if (!reporter->dump_fmsg) { | |
6389 | err = -ENOMEM; | |
6390 | return err; | |
6391 | } | |
6392 | ||
6393 | err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg); | |
6394 | if (err) | |
6395 | goto dump_err; | |
6396 | ||
6397 | err = reporter->ops->dump(reporter, reporter->dump_fmsg, | |
e7a98105 | 6398 | priv_ctx, extack); |
c8e1da0b EBE |
6399 | if (err) |
6400 | goto dump_err; | |
6401 | ||
6402 | err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg); | |
6403 | if (err) | |
6404 | goto dump_err; | |
6405 | ||
6406 | reporter->dump_ts = jiffies; | |
d279505b | 6407 | reporter->dump_real_ts = ktime_get_real_ns(); |
c8e1da0b EBE |
6408 | |
6409 | return 0; | |
6410 | ||
6411 | dump_err: | |
6412 | devlink_health_dump_clear(reporter); | |
6413 | return err; | |
6414 | } | |
6415 | ||
6416 | int devlink_health_report(struct devlink_health_reporter *reporter, | |
6417 | const char *msg, void *priv_ctx) | |
6418 | { | |
a0a21adb | 6419 | enum devlink_health_reporter_state prev_health_state; |
c8e1da0b | 6420 | struct devlink *devlink = reporter->devlink; |
bea0c5c9 | 6421 | unsigned long recover_ts_threshold; |
c8e1da0b EBE |
6422 | |
6423 | /* write a log message of the current error */ | |
6424 | WARN_ON(!msg); | |
6425 | trace_devlink_health_report(devlink, reporter->ops->name, msg); | |
6426 | reporter->error_count++; | |
a0a21adb EBE |
6427 | prev_health_state = reporter->health_state; |
6428 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR; | |
6ec8b6cd | 6429 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); |
c8e1da0b EBE |
6430 | |
6431 | /* abort if the previous error wasn't recovered */ | |
bea0c5c9 AL |
6432 | recover_ts_threshold = reporter->last_recovery_ts + |
6433 | msecs_to_jiffies(reporter->graceful_period); | |
c8e1da0b | 6434 | if (reporter->auto_recover && |
a0a21adb | 6435 | (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY || |
bea0c5c9 AL |
6436 | (reporter->last_recovery_ts && reporter->recovery_count && |
6437 | time_is_after_jiffies(recover_ts_threshold)))) { | |
c8e1da0b EBE |
6438 | trace_devlink_health_recover_aborted(devlink, |
6439 | reporter->ops->name, | |
6440 | reporter->health_state, | |
6441 | jiffies - | |
6442 | reporter->last_recovery_ts); | |
6443 | return -ECANCELED; | |
6444 | } | |
6445 | ||
6446 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR; | |
6447 | ||
48bb52c8 EBE |
6448 | if (reporter->auto_dump) { |
6449 | mutex_lock(&reporter->dump_lock); | |
6450 | /* store current dump of current error, for later analysis */ | |
6451 | devlink_health_do_dump(reporter, priv_ctx, NULL); | |
6452 | mutex_unlock(&reporter->dump_lock); | |
6453 | } | |
c8e1da0b EBE |
6454 | |
6455 | if (reporter->auto_recover) | |
e7a98105 JP |
6456 | return devlink_health_reporter_recover(reporter, |
6457 | priv_ctx, NULL); | |
c8e1da0b EBE |
6458 | |
6459 | return 0; | |
6460 | } | |
6461 | EXPORT_SYMBOL_GPL(devlink_health_report); | |
6462 | ||
7afe335a | 6463 | static struct devlink_health_reporter * |
e44ef4e4 AL |
6464 | devlink_health_reporter_get_from_attrs(struct devlink *devlink, |
6465 | struct nlattr **attrs) | |
7afe335a | 6466 | { |
b587bdaf | 6467 | struct devlink_health_reporter *reporter; |
f4f54166 | 6468 | struct devlink_port *devlink_port; |
7afe335a EBE |
6469 | char *reporter_name; |
6470 | ||
e44ef4e4 | 6471 | if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]) |
7afe335a EBE |
6472 | return NULL; |
6473 | ||
e44ef4e4 | 6474 | reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]); |
f4f54166 VT |
6475 | devlink_port = devlink_port_get_from_attrs(devlink, attrs); |
6476 | if (IS_ERR(devlink_port)) { | |
6477 | mutex_lock(&devlink->reporters_lock); | |
6478 | reporter = devlink_health_reporter_find_by_name(devlink, reporter_name); | |
6479 | if (reporter) | |
6480 | refcount_inc(&reporter->refcount); | |
6481 | mutex_unlock(&devlink->reporters_lock); | |
6482 | } else { | |
6483 | mutex_lock(&devlink_port->reporters_lock); | |
6484 | reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name); | |
6485 | if (reporter) | |
6486 | refcount_inc(&reporter->refcount); | |
6487 | mutex_unlock(&devlink_port->reporters_lock); | |
6488 | } | |
6489 | ||
b587bdaf MS |
6490 | return reporter; |
6491 | } | |
6492 | ||
e44ef4e4 AL |
6493 | static struct devlink_health_reporter * |
6494 | devlink_health_reporter_get_from_info(struct devlink *devlink, | |
6495 | struct genl_info *info) | |
6496 | { | |
6497 | return devlink_health_reporter_get_from_attrs(devlink, info->attrs); | |
6498 | } | |
6499 | ||
6500 | static struct devlink_health_reporter * | |
6501 | devlink_health_reporter_get_from_cb(struct netlink_callback *cb) | |
6502 | { | |
ee85da53 | 6503 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
e44ef4e4 | 6504 | struct devlink_health_reporter *reporter; |
ee85da53 | 6505 | struct nlattr **attrs = info->attrs; |
e44ef4e4 | 6506 | struct devlink *devlink; |
e44ef4e4 AL |
6507 | |
6508 | mutex_lock(&devlink_mutex); | |
6509 | devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); | |
6510 | if (IS_ERR(devlink)) | |
6511 | goto unlock; | |
6512 | ||
6513 | reporter = devlink_health_reporter_get_from_attrs(devlink, attrs); | |
6514 | mutex_unlock(&devlink_mutex); | |
e44ef4e4 AL |
6515 | return reporter; |
6516 | unlock: | |
6517 | mutex_unlock(&devlink_mutex); | |
e44ef4e4 AL |
6518 | return NULL; |
6519 | } | |
6520 | ||
97ff3bd3 VG |
6521 | void |
6522 | devlink_health_reporter_state_update(struct devlink_health_reporter *reporter, | |
6523 | enum devlink_health_reporter_state state) | |
6524 | { | |
6525 | if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY && | |
6526 | state != DEVLINK_HEALTH_REPORTER_STATE_ERROR)) | |
6527 | return; | |
6528 | ||
6529 | if (reporter->health_state == state) | |
6530 | return; | |
6531 | ||
6532 | reporter->health_state = state; | |
6533 | trace_devlink_health_reporter_state_update(reporter->devlink, | |
6534 | reporter->ops->name, state); | |
6535 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); | |
6536 | } | |
6537 | EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update); | |
6538 | ||
7afe335a EBE |
6539 | static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb, |
6540 | struct genl_info *info) | |
6541 | { | |
6542 | struct devlink *devlink = info->user_ptr[0]; | |
6543 | struct devlink_health_reporter *reporter; | |
6544 | struct sk_buff *msg; | |
6545 | int err; | |
6546 | ||
6547 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6548 | if (!reporter) | |
6549 | return -EINVAL; | |
6550 | ||
6551 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
b587bdaf MS |
6552 | if (!msg) { |
6553 | err = -ENOMEM; | |
6554 | goto out; | |
6555 | } | |
7afe335a EBE |
6556 | |
6557 | err = devlink_nl_health_reporter_fill(msg, devlink, reporter, | |
6558 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
6559 | info->snd_portid, info->snd_seq, | |
6560 | 0); | |
6561 | if (err) { | |
6562 | nlmsg_free(msg); | |
b587bdaf | 6563 | goto out; |
7afe335a EBE |
6564 | } |
6565 | ||
b587bdaf MS |
6566 | err = genlmsg_reply(msg, info); |
6567 | out: | |
6568 | devlink_health_reporter_put(reporter); | |
6569 | return err; | |
7afe335a EBE |
6570 | } |
6571 | ||
6572 | static int | |
6573 | devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg, | |
6574 | struct netlink_callback *cb) | |
6575 | { | |
6576 | struct devlink_health_reporter *reporter; | |
f4f54166 | 6577 | struct devlink_port *port; |
7afe335a EBE |
6578 | struct devlink *devlink; |
6579 | int start = cb->args[0]; | |
6580 | int idx = 0; | |
6581 | int err; | |
6582 | ||
6583 | mutex_lock(&devlink_mutex); | |
6584 | list_for_each_entry(devlink, &devlink_list, list) { | |
6585 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6586 | continue; | |
b587bdaf | 6587 | mutex_lock(&devlink->reporters_lock); |
7afe335a EBE |
6588 | list_for_each_entry(reporter, &devlink->reporter_list, |
6589 | list) { | |
6590 | if (idx < start) { | |
6591 | idx++; | |
6592 | continue; | |
6593 | } | |
6594 | err = devlink_nl_health_reporter_fill(msg, devlink, | |
6595 | reporter, | |
6596 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
6597 | NETLINK_CB(cb->skb).portid, | |
6598 | cb->nlh->nlmsg_seq, | |
6599 | NLM_F_MULTI); | |
6600 | if (err) { | |
b587bdaf | 6601 | mutex_unlock(&devlink->reporters_lock); |
7afe335a EBE |
6602 | goto out; |
6603 | } | |
6604 | idx++; | |
6605 | } | |
b587bdaf | 6606 | mutex_unlock(&devlink->reporters_lock); |
7afe335a | 6607 | } |
f4f54166 VT |
6608 | |
6609 | list_for_each_entry(devlink, &devlink_list, list) { | |
6610 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6611 | continue; | |
5d080b50 | 6612 | mutex_lock(&devlink->lock); |
f4f54166 VT |
6613 | list_for_each_entry(port, &devlink->port_list, list) { |
6614 | mutex_lock(&port->reporters_lock); | |
6615 | list_for_each_entry(reporter, &port->reporter_list, list) { | |
6616 | if (idx < start) { | |
6617 | idx++; | |
6618 | continue; | |
6619 | } | |
6620 | err = devlink_nl_health_reporter_fill(msg, devlink, reporter, | |
6621 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
6622 | NETLINK_CB(cb->skb).portid, | |
6623 | cb->nlh->nlmsg_seq, | |
6624 | NLM_F_MULTI); | |
6625 | if (err) { | |
6626 | mutex_unlock(&port->reporters_lock); | |
5d080b50 | 6627 | mutex_unlock(&devlink->lock); |
f4f54166 VT |
6628 | goto out; |
6629 | } | |
6630 | idx++; | |
6631 | } | |
6632 | mutex_unlock(&port->reporters_lock); | |
6633 | } | |
5d080b50 | 6634 | mutex_unlock(&devlink->lock); |
f4f54166 | 6635 | } |
7afe335a EBE |
6636 | out: |
6637 | mutex_unlock(&devlink_mutex); | |
6638 | ||
6639 | cb->args[0] = idx; | |
6640 | return msg->len; | |
6641 | } | |
6642 | ||
a1e55ec0 EBE |
6643 | static int |
6644 | devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb, | |
6645 | struct genl_info *info) | |
6646 | { | |
6647 | struct devlink *devlink = info->user_ptr[0]; | |
6648 | struct devlink_health_reporter *reporter; | |
b587bdaf | 6649 | int err; |
a1e55ec0 EBE |
6650 | |
6651 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6652 | if (!reporter) | |
6653 | return -EINVAL; | |
6654 | ||
6655 | if (!reporter->ops->recover && | |
6656 | (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] || | |
b587bdaf MS |
6657 | info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) { |
6658 | err = -EOPNOTSUPP; | |
6659 | goto out; | |
6660 | } | |
48bb52c8 EBE |
6661 | if (!reporter->ops->dump && |
6662 | info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) { | |
6663 | err = -EOPNOTSUPP; | |
6664 | goto out; | |
6665 | } | |
a1e55ec0 EBE |
6666 | |
6667 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]) | |
6668 | reporter->graceful_period = | |
6669 | nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]); | |
6670 | ||
6671 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]) | |
6672 | reporter->auto_recover = | |
6673 | nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]); | |
6674 | ||
48bb52c8 EBE |
6675 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) |
6676 | reporter->auto_dump = | |
6677 | nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]); | |
6678 | ||
b587bdaf | 6679 | devlink_health_reporter_put(reporter); |
a1e55ec0 | 6680 | return 0; |
b587bdaf MS |
6681 | out: |
6682 | devlink_health_reporter_put(reporter); | |
6683 | return err; | |
a1e55ec0 EBE |
6684 | } |
6685 | ||
20a0943a EBE |
6686 | static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb, |
6687 | struct genl_info *info) | |
6688 | { | |
6689 | struct devlink *devlink = info->user_ptr[0]; | |
6690 | struct devlink_health_reporter *reporter; | |
b587bdaf | 6691 | int err; |
20a0943a EBE |
6692 | |
6693 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6694 | if (!reporter) | |
6695 | return -EINVAL; | |
6696 | ||
e7a98105 | 6697 | err = devlink_health_reporter_recover(reporter, NULL, info->extack); |
b587bdaf MS |
6698 | |
6699 | devlink_health_reporter_put(reporter); | |
6700 | return err; | |
20a0943a EBE |
6701 | } |
6702 | ||
fca42a27 EBE |
6703 | static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb, |
6704 | struct genl_info *info) | |
6705 | { | |
6706 | struct devlink *devlink = info->user_ptr[0]; | |
6707 | struct devlink_health_reporter *reporter; | |
6708 | struct devlink_fmsg *fmsg; | |
6709 | int err; | |
6710 | ||
6711 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6712 | if (!reporter) | |
6713 | return -EINVAL; | |
6714 | ||
b587bdaf MS |
6715 | if (!reporter->ops->diagnose) { |
6716 | devlink_health_reporter_put(reporter); | |
fca42a27 | 6717 | return -EOPNOTSUPP; |
b587bdaf | 6718 | } |
fca42a27 EBE |
6719 | |
6720 | fmsg = devlink_fmsg_alloc(); | |
b587bdaf MS |
6721 | if (!fmsg) { |
6722 | devlink_health_reporter_put(reporter); | |
fca42a27 | 6723 | return -ENOMEM; |
b587bdaf | 6724 | } |
fca42a27 EBE |
6725 | |
6726 | err = devlink_fmsg_obj_nest_start(fmsg); | |
6727 | if (err) | |
6728 | goto out; | |
6729 | ||
e7a98105 | 6730 | err = reporter->ops->diagnose(reporter, fmsg, info->extack); |
fca42a27 EBE |
6731 | if (err) |
6732 | goto out; | |
6733 | ||
6734 | err = devlink_fmsg_obj_nest_end(fmsg); | |
6735 | if (err) | |
6736 | goto out; | |
6737 | ||
6738 | err = devlink_fmsg_snd(fmsg, info, | |
6739 | DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0); | |
6740 | ||
6741 | out: | |
6742 | devlink_fmsg_free(fmsg); | |
b587bdaf | 6743 | devlink_health_reporter_put(reporter); |
fca42a27 EBE |
6744 | return err; |
6745 | } | |
6746 | ||
e44ef4e4 AL |
6747 | static int |
6748 | devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb, | |
6749 | struct netlink_callback *cb) | |
35455e23 | 6750 | { |
35455e23 | 6751 | struct devlink_health_reporter *reporter; |
e44ef4e4 | 6752 | u64 start = cb->args[0]; |
35455e23 EBE |
6753 | int err; |
6754 | ||
e44ef4e4 | 6755 | reporter = devlink_health_reporter_get_from_cb(cb); |
35455e23 EBE |
6756 | if (!reporter) |
6757 | return -EINVAL; | |
6758 | ||
b587bdaf | 6759 | if (!reporter->ops->dump) { |
e44ef4e4 AL |
6760 | err = -EOPNOTSUPP; |
6761 | goto out; | |
b587bdaf | 6762 | } |
35455e23 | 6763 | mutex_lock(&reporter->dump_lock); |
e44ef4e4 | 6764 | if (!start) { |
e7a98105 | 6765 | err = devlink_health_do_dump(reporter, NULL, cb->extack); |
e44ef4e4 AL |
6766 | if (err) |
6767 | goto unlock; | |
6768 | cb->args[1] = reporter->dump_ts; | |
6769 | } | |
6770 | if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) { | |
6771 | NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry"); | |
6772 | err = -EAGAIN; | |
6773 | goto unlock; | |
6774 | } | |
35455e23 | 6775 | |
e44ef4e4 AL |
6776 | err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb, |
6777 | DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET); | |
6778 | unlock: | |
35455e23 | 6779 | mutex_unlock(&reporter->dump_lock); |
e44ef4e4 | 6780 | out: |
b587bdaf | 6781 | devlink_health_reporter_put(reporter); |
35455e23 EBE |
6782 | return err; |
6783 | } | |
6784 | ||
6785 | static int | |
6786 | devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb, | |
6787 | struct genl_info *info) | |
6788 | { | |
6789 | struct devlink *devlink = info->user_ptr[0]; | |
6790 | struct devlink_health_reporter *reporter; | |
6791 | ||
6792 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6793 | if (!reporter) | |
6794 | return -EINVAL; | |
6795 | ||
b587bdaf MS |
6796 | if (!reporter->ops->dump) { |
6797 | devlink_health_reporter_put(reporter); | |
35455e23 | 6798 | return -EOPNOTSUPP; |
b587bdaf | 6799 | } |
35455e23 EBE |
6800 | |
6801 | mutex_lock(&reporter->dump_lock); | |
6802 | devlink_health_dump_clear(reporter); | |
6803 | mutex_unlock(&reporter->dump_lock); | |
b587bdaf | 6804 | devlink_health_reporter_put(reporter); |
35455e23 EBE |
6805 | return 0; |
6806 | } | |
6807 | ||
e2ce94dc JP |
6808 | static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb, |
6809 | struct genl_info *info) | |
6810 | { | |
6811 | struct devlink *devlink = info->user_ptr[0]; | |
6812 | struct devlink_health_reporter *reporter; | |
6813 | int err; | |
6814 | ||
6815 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6816 | if (!reporter) | |
6817 | return -EINVAL; | |
6818 | ||
6819 | if (!reporter->ops->test) { | |
6820 | devlink_health_reporter_put(reporter); | |
6821 | return -EOPNOTSUPP; | |
6822 | } | |
6823 | ||
6824 | err = reporter->ops->test(reporter, info->extack); | |
6825 | ||
6826 | devlink_health_reporter_put(reporter); | |
6827 | return err; | |
6828 | } | |
6829 | ||
0f420b6c IS |
6830 | struct devlink_stats { |
6831 | u64 rx_bytes; | |
6832 | u64 rx_packets; | |
6833 | struct u64_stats_sync syncp; | |
6834 | }; | |
6835 | ||
1e8c6619 IS |
6836 | /** |
6837 | * struct devlink_trap_policer_item - Packet trap policer attributes. | |
6838 | * @policer: Immutable packet trap policer attributes. | |
6839 | * @rate: Rate in packets / sec. | |
6840 | * @burst: Burst size in packets. | |
6841 | * @list: trap_policer_list member. | |
6842 | * | |
6843 | * Describes packet trap policer attributes. Created by devlink during trap | |
6844 | * policer registration. | |
6845 | */ | |
6846 | struct devlink_trap_policer_item { | |
6847 | const struct devlink_trap_policer *policer; | |
6848 | u64 rate; | |
6849 | u64 burst; | |
6850 | struct list_head list; | |
6851 | }; | |
6852 | ||
0f420b6c IS |
6853 | /** |
6854 | * struct devlink_trap_group_item - Packet trap group attributes. | |
6855 | * @group: Immutable packet trap group attributes. | |
f9f54392 | 6856 | * @policer_item: Associated policer item. Can be NULL. |
0f420b6c IS |
6857 | * @list: trap_group_list member. |
6858 | * @stats: Trap group statistics. | |
6859 | * | |
6860 | * Describes packet trap group attributes. Created by devlink during trap | |
a09b37fc | 6861 | * group registration. |
0f420b6c IS |
6862 | */ |
6863 | struct devlink_trap_group_item { | |
6864 | const struct devlink_trap_group *group; | |
f9f54392 | 6865 | struct devlink_trap_policer_item *policer_item; |
0f420b6c IS |
6866 | struct list_head list; |
6867 | struct devlink_stats __percpu *stats; | |
6868 | }; | |
6869 | ||
6870 | /** | |
6871 | * struct devlink_trap_item - Packet trap attributes. | |
6872 | * @trap: Immutable packet trap attributes. | |
6873 | * @group_item: Associated group item. | |
6874 | * @list: trap_list member. | |
6875 | * @action: Trap action. | |
6876 | * @stats: Trap statistics. | |
6877 | * @priv: Driver private information. | |
6878 | * | |
6879 | * Describes both mutable and immutable packet trap attributes. Created by | |
6880 | * devlink during trap registration and used for all trap related operations. | |
6881 | */ | |
6882 | struct devlink_trap_item { | |
6883 | const struct devlink_trap *trap; | |
6884 | struct devlink_trap_group_item *group_item; | |
6885 | struct list_head list; | |
6886 | enum devlink_trap_action action; | |
6887 | struct devlink_stats __percpu *stats; | |
6888 | void *priv; | |
6889 | }; | |
6890 | ||
1e8c6619 IS |
6891 | static struct devlink_trap_policer_item * |
6892 | devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id) | |
6893 | { | |
6894 | struct devlink_trap_policer_item *policer_item; | |
6895 | ||
6896 | list_for_each_entry(policer_item, &devlink->trap_policer_list, list) { | |
6897 | if (policer_item->policer->id == id) | |
6898 | return policer_item; | |
6899 | } | |
6900 | ||
6901 | return NULL; | |
6902 | } | |
6903 | ||
0f420b6c IS |
6904 | static struct devlink_trap_item * |
6905 | devlink_trap_item_lookup(struct devlink *devlink, const char *name) | |
6906 | { | |
6907 | struct devlink_trap_item *trap_item; | |
6908 | ||
6909 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
6910 | if (!strcmp(trap_item->trap->name, name)) | |
6911 | return trap_item; | |
6912 | } | |
6913 | ||
6914 | return NULL; | |
6915 | } | |
6916 | ||
6917 | static struct devlink_trap_item * | |
6918 | devlink_trap_item_get_from_info(struct devlink *devlink, | |
6919 | struct genl_info *info) | |
6920 | { | |
6921 | struct nlattr *attr; | |
6922 | ||
6923 | if (!info->attrs[DEVLINK_ATTR_TRAP_NAME]) | |
6924 | return NULL; | |
6925 | attr = info->attrs[DEVLINK_ATTR_TRAP_NAME]; | |
6926 | ||
6927 | return devlink_trap_item_lookup(devlink, nla_data(attr)); | |
6928 | } | |
6929 | ||
6930 | static int | |
6931 | devlink_trap_action_get_from_info(struct genl_info *info, | |
6932 | enum devlink_trap_action *p_trap_action) | |
6933 | { | |
6934 | u8 val; | |
6935 | ||
6936 | val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]); | |
6937 | switch (val) { | |
df561f66 GS |
6938 | case DEVLINK_TRAP_ACTION_DROP: |
6939 | case DEVLINK_TRAP_ACTION_TRAP: | |
9eefeabe | 6940 | case DEVLINK_TRAP_ACTION_MIRROR: |
0f420b6c IS |
6941 | *p_trap_action = val; |
6942 | break; | |
6943 | default: | |
6944 | return -EINVAL; | |
6945 | } | |
6946 | ||
6947 | return 0; | |
6948 | } | |
6949 | ||
6950 | static int devlink_trap_metadata_put(struct sk_buff *msg, | |
6951 | const struct devlink_trap *trap) | |
6952 | { | |
6953 | struct nlattr *attr; | |
6954 | ||
6955 | attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA); | |
6956 | if (!attr) | |
6957 | return -EMSGSIZE; | |
6958 | ||
6959 | if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) && | |
6960 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT)) | |
6961 | goto nla_put_failure; | |
85b0589e JP |
6962 | if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) && |
6963 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE)) | |
6964 | goto nla_put_failure; | |
0f420b6c IS |
6965 | |
6966 | nla_nest_end(msg, attr); | |
6967 | ||
6968 | return 0; | |
6969 | ||
6970 | nla_put_failure: | |
6971 | nla_nest_cancel(msg, attr); | |
6972 | return -EMSGSIZE; | |
6973 | } | |
6974 | ||
6975 | static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats, | |
6976 | struct devlink_stats *stats) | |
6977 | { | |
6978 | int i; | |
6979 | ||
6980 | memset(stats, 0, sizeof(*stats)); | |
6981 | for_each_possible_cpu(i) { | |
6982 | struct devlink_stats *cpu_stats; | |
6983 | u64 rx_packets, rx_bytes; | |
6984 | unsigned int start; | |
6985 | ||
6986 | cpu_stats = per_cpu_ptr(trap_stats, i); | |
6987 | do { | |
6988 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
6989 | rx_packets = cpu_stats->rx_packets; | |
6990 | rx_bytes = cpu_stats->rx_bytes; | |
6991 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
6992 | ||
6993 | stats->rx_packets += rx_packets; | |
6994 | stats->rx_bytes += rx_bytes; | |
6995 | } | |
6996 | } | |
6997 | ||
6998 | static int devlink_trap_stats_put(struct sk_buff *msg, | |
6999 | struct devlink_stats __percpu *trap_stats) | |
7000 | { | |
7001 | struct devlink_stats stats; | |
7002 | struct nlattr *attr; | |
7003 | ||
7004 | devlink_trap_stats_read(trap_stats, &stats); | |
7005 | ||
7006 | attr = nla_nest_start(msg, DEVLINK_ATTR_STATS); | |
7007 | if (!attr) | |
7008 | return -EMSGSIZE; | |
7009 | ||
7010 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS, | |
7011 | stats.rx_packets, DEVLINK_ATTR_PAD)) | |
7012 | goto nla_put_failure; | |
7013 | ||
7014 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES, | |
7015 | stats.rx_bytes, DEVLINK_ATTR_PAD)) | |
7016 | goto nla_put_failure; | |
7017 | ||
7018 | nla_nest_end(msg, attr); | |
7019 | ||
7020 | return 0; | |
7021 | ||
7022 | nla_put_failure: | |
7023 | nla_nest_cancel(msg, attr); | |
7024 | return -EMSGSIZE; | |
7025 | } | |
7026 | ||
7027 | static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink, | |
7028 | const struct devlink_trap_item *trap_item, | |
7029 | enum devlink_command cmd, u32 portid, u32 seq, | |
7030 | int flags) | |
7031 | { | |
7032 | struct devlink_trap_group_item *group_item = trap_item->group_item; | |
7033 | void *hdr; | |
7034 | int err; | |
7035 | ||
7036 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
7037 | if (!hdr) | |
7038 | return -EMSGSIZE; | |
7039 | ||
7040 | if (devlink_nl_put_handle(msg, devlink)) | |
7041 | goto nla_put_failure; | |
7042 | ||
7043 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME, | |
7044 | group_item->group->name)) | |
7045 | goto nla_put_failure; | |
7046 | ||
7047 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name)) | |
7048 | goto nla_put_failure; | |
7049 | ||
7050 | if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type)) | |
7051 | goto nla_put_failure; | |
7052 | ||
7053 | if (trap_item->trap->generic && | |
7054 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC)) | |
7055 | goto nla_put_failure; | |
7056 | ||
7057 | if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action)) | |
7058 | goto nla_put_failure; | |
7059 | ||
7060 | err = devlink_trap_metadata_put(msg, trap_item->trap); | |
7061 | if (err) | |
7062 | goto nla_put_failure; | |
7063 | ||
7064 | err = devlink_trap_stats_put(msg, trap_item->stats); | |
7065 | if (err) | |
7066 | goto nla_put_failure; | |
7067 | ||
7068 | genlmsg_end(msg, hdr); | |
7069 | ||
7070 | return 0; | |
7071 | ||
7072 | nla_put_failure: | |
7073 | genlmsg_cancel(msg, hdr); | |
7074 | return -EMSGSIZE; | |
7075 | } | |
7076 | ||
7077 | static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb, | |
7078 | struct genl_info *info) | |
7079 | { | |
7080 | struct netlink_ext_ack *extack = info->extack; | |
7081 | struct devlink *devlink = info->user_ptr[0]; | |
7082 | struct devlink_trap_item *trap_item; | |
7083 | struct sk_buff *msg; | |
7084 | int err; | |
7085 | ||
7086 | if (list_empty(&devlink->trap_list)) | |
7087 | return -EOPNOTSUPP; | |
7088 | ||
7089 | trap_item = devlink_trap_item_get_from_info(devlink, info); | |
7090 | if (!trap_item) { | |
7091 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap"); | |
7092 | return -ENOENT; | |
7093 | } | |
7094 | ||
7095 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
7096 | if (!msg) | |
7097 | return -ENOMEM; | |
7098 | ||
7099 | err = devlink_nl_trap_fill(msg, devlink, trap_item, | |
7100 | DEVLINK_CMD_TRAP_NEW, info->snd_portid, | |
7101 | info->snd_seq, 0); | |
7102 | if (err) | |
7103 | goto err_trap_fill; | |
7104 | ||
7105 | return genlmsg_reply(msg, info); | |
7106 | ||
7107 | err_trap_fill: | |
7108 | nlmsg_free(msg); | |
7109 | return err; | |
7110 | } | |
7111 | ||
7112 | static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg, | |
7113 | struct netlink_callback *cb) | |
7114 | { | |
7115 | struct devlink_trap_item *trap_item; | |
7116 | struct devlink *devlink; | |
7117 | int start = cb->args[0]; | |
7118 | int idx = 0; | |
7119 | int err; | |
7120 | ||
7121 | mutex_lock(&devlink_mutex); | |
7122 | list_for_each_entry(devlink, &devlink_list, list) { | |
7123 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
7124 | continue; | |
7125 | mutex_lock(&devlink->lock); | |
7126 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
7127 | if (idx < start) { | |
7128 | idx++; | |
7129 | continue; | |
7130 | } | |
7131 | err = devlink_nl_trap_fill(msg, devlink, trap_item, | |
7132 | DEVLINK_CMD_TRAP_NEW, | |
7133 | NETLINK_CB(cb->skb).portid, | |
7134 | cb->nlh->nlmsg_seq, | |
7135 | NLM_F_MULTI); | |
7136 | if (err) { | |
7137 | mutex_unlock(&devlink->lock); | |
7138 | goto out; | |
7139 | } | |
7140 | idx++; | |
7141 | } | |
7142 | mutex_unlock(&devlink->lock); | |
7143 | } | |
7144 | out: | |
7145 | mutex_unlock(&devlink_mutex); | |
7146 | ||
7147 | cb->args[0] = idx; | |
7148 | return msg->len; | |
7149 | } | |
7150 | ||
7151 | static int __devlink_trap_action_set(struct devlink *devlink, | |
7152 | struct devlink_trap_item *trap_item, | |
7153 | enum devlink_trap_action trap_action, | |
7154 | struct netlink_ext_ack *extack) | |
7155 | { | |
7156 | int err; | |
7157 | ||
7158 | if (trap_item->action != trap_action && | |
7159 | trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) { | |
7160 | NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping"); | |
7161 | return 0; | |
7162 | } | |
7163 | ||
7164 | err = devlink->ops->trap_action_set(devlink, trap_item->trap, | |
c88e11e0 | 7165 | trap_action, extack); |
0f420b6c IS |
7166 | if (err) |
7167 | return err; | |
7168 | ||
7169 | trap_item->action = trap_action; | |
7170 | ||
7171 | return 0; | |
7172 | } | |
7173 | ||
7174 | static int devlink_trap_action_set(struct devlink *devlink, | |
7175 | struct devlink_trap_item *trap_item, | |
7176 | struct genl_info *info) | |
7177 | { | |
7178 | enum devlink_trap_action trap_action; | |
7179 | int err; | |
7180 | ||
7181 | if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION]) | |
7182 | return 0; | |
7183 | ||
7184 | err = devlink_trap_action_get_from_info(info, &trap_action); | |
7185 | if (err) { | |
7186 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action"); | |
7187 | return -EINVAL; | |
7188 | } | |
7189 | ||
7190 | return __devlink_trap_action_set(devlink, trap_item, trap_action, | |
7191 | info->extack); | |
7192 | } | |
7193 | ||
7194 | static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb, | |
7195 | struct genl_info *info) | |
7196 | { | |
7197 | struct netlink_ext_ack *extack = info->extack; | |
7198 | struct devlink *devlink = info->user_ptr[0]; | |
7199 | struct devlink_trap_item *trap_item; | |
0f420b6c IS |
7200 | |
7201 | if (list_empty(&devlink->trap_list)) | |
7202 | return -EOPNOTSUPP; | |
7203 | ||
7204 | trap_item = devlink_trap_item_get_from_info(devlink, info); | |
7205 | if (!trap_item) { | |
7206 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap"); | |
7207 | return -ENOENT; | |
7208 | } | |
7209 | ||
8daa76a5 | 7210 | return devlink_trap_action_set(devlink, trap_item, info); |
0f420b6c IS |
7211 | } |
7212 | ||
7213 | static struct devlink_trap_group_item * | |
7214 | devlink_trap_group_item_lookup(struct devlink *devlink, const char *name) | |
7215 | { | |
7216 | struct devlink_trap_group_item *group_item; | |
7217 | ||
7218 | list_for_each_entry(group_item, &devlink->trap_group_list, list) { | |
7219 | if (!strcmp(group_item->group->name, name)) | |
7220 | return group_item; | |
7221 | } | |
7222 | ||
7223 | return NULL; | |
7224 | } | |
7225 | ||
107f1678 IS |
7226 | static struct devlink_trap_group_item * |
7227 | devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id) | |
7228 | { | |
7229 | struct devlink_trap_group_item *group_item; | |
7230 | ||
7231 | list_for_each_entry(group_item, &devlink->trap_group_list, list) { | |
7232 | if (group_item->group->id == id) | |
7233 | return group_item; | |
7234 | } | |
7235 | ||
7236 | return NULL; | |
7237 | } | |
7238 | ||
0f420b6c IS |
7239 | static struct devlink_trap_group_item * |
7240 | devlink_trap_group_item_get_from_info(struct devlink *devlink, | |
7241 | struct genl_info *info) | |
7242 | { | |
7243 | char *name; | |
7244 | ||
7245 | if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]) | |
7246 | return NULL; | |
7247 | name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]); | |
7248 | ||
7249 | return devlink_trap_group_item_lookup(devlink, name); | |
7250 | } | |
7251 | ||
7252 | static int | |
7253 | devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink, | |
7254 | const struct devlink_trap_group_item *group_item, | |
7255 | enum devlink_command cmd, u32 portid, u32 seq, | |
7256 | int flags) | |
7257 | { | |
7258 | void *hdr; | |
7259 | int err; | |
7260 | ||
7261 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
7262 | if (!hdr) | |
7263 | return -EMSGSIZE; | |
7264 | ||
7265 | if (devlink_nl_put_handle(msg, devlink)) | |
7266 | goto nla_put_failure; | |
7267 | ||
7268 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME, | |
7269 | group_item->group->name)) | |
7270 | goto nla_put_failure; | |
7271 | ||
7272 | if (group_item->group->generic && | |
7273 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC)) | |
7274 | goto nla_put_failure; | |
7275 | ||
f9f54392 IS |
7276 | if (group_item->policer_item && |
7277 | nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID, | |
7278 | group_item->policer_item->policer->id)) | |
7279 | goto nla_put_failure; | |
7280 | ||
0f420b6c IS |
7281 | err = devlink_trap_stats_put(msg, group_item->stats); |
7282 | if (err) | |
7283 | goto nla_put_failure; | |
7284 | ||
7285 | genlmsg_end(msg, hdr); | |
7286 | ||
7287 | return 0; | |
7288 | ||
7289 | nla_put_failure: | |
7290 | genlmsg_cancel(msg, hdr); | |
7291 | return -EMSGSIZE; | |
7292 | } | |
7293 | ||
7294 | static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb, | |
7295 | struct genl_info *info) | |
7296 | { | |
7297 | struct netlink_ext_ack *extack = info->extack; | |
7298 | struct devlink *devlink = info->user_ptr[0]; | |
7299 | struct devlink_trap_group_item *group_item; | |
7300 | struct sk_buff *msg; | |
7301 | int err; | |
7302 | ||
7303 | if (list_empty(&devlink->trap_group_list)) | |
7304 | return -EOPNOTSUPP; | |
7305 | ||
7306 | group_item = devlink_trap_group_item_get_from_info(devlink, info); | |
7307 | if (!group_item) { | |
7308 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group"); | |
7309 | return -ENOENT; | |
7310 | } | |
7311 | ||
7312 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
7313 | if (!msg) | |
7314 | return -ENOMEM; | |
7315 | ||
7316 | err = devlink_nl_trap_group_fill(msg, devlink, group_item, | |
7317 | DEVLINK_CMD_TRAP_GROUP_NEW, | |
7318 | info->snd_portid, info->snd_seq, 0); | |
7319 | if (err) | |
7320 | goto err_trap_group_fill; | |
7321 | ||
7322 | return genlmsg_reply(msg, info); | |
7323 | ||
7324 | err_trap_group_fill: | |
7325 | nlmsg_free(msg); | |
7326 | return err; | |
7327 | } | |
7328 | ||
7329 | static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg, | |
7330 | struct netlink_callback *cb) | |
7331 | { | |
7332 | enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW; | |
7333 | struct devlink_trap_group_item *group_item; | |
7334 | u32 portid = NETLINK_CB(cb->skb).portid; | |
7335 | struct devlink *devlink; | |
7336 | int start = cb->args[0]; | |
7337 | int idx = 0; | |
7338 | int err; | |
7339 | ||
7340 | mutex_lock(&devlink_mutex); | |
7341 | list_for_each_entry(devlink, &devlink_list, list) { | |
7342 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
7343 | continue; | |
7344 | mutex_lock(&devlink->lock); | |
7345 | list_for_each_entry(group_item, &devlink->trap_group_list, | |
7346 | list) { | |
7347 | if (idx < start) { | |
7348 | idx++; | |
7349 | continue; | |
7350 | } | |
7351 | err = devlink_nl_trap_group_fill(msg, devlink, | |
7352 | group_item, cmd, | |
7353 | portid, | |
7354 | cb->nlh->nlmsg_seq, | |
7355 | NLM_F_MULTI); | |
7356 | if (err) { | |
7357 | mutex_unlock(&devlink->lock); | |
7358 | goto out; | |
7359 | } | |
7360 | idx++; | |
7361 | } | |
7362 | mutex_unlock(&devlink->lock); | |
7363 | } | |
7364 | out: | |
7365 | mutex_unlock(&devlink_mutex); | |
7366 | ||
7367 | cb->args[0] = idx; | |
7368 | return msg->len; | |
7369 | } | |
7370 | ||
7371 | static int | |
7372 | __devlink_trap_group_action_set(struct devlink *devlink, | |
7373 | struct devlink_trap_group_item *group_item, | |
7374 | enum devlink_trap_action trap_action, | |
7375 | struct netlink_ext_ack *extack) | |
7376 | { | |
7377 | const char *group_name = group_item->group->name; | |
7378 | struct devlink_trap_item *trap_item; | |
7379 | int err; | |
7380 | ||
c50bf2be IC |
7381 | if (devlink->ops->trap_group_action_set) { |
7382 | err = devlink->ops->trap_group_action_set(devlink, group_item->group, | |
7383 | trap_action, extack); | |
7384 | if (err) | |
7385 | return err; | |
7386 | ||
7387 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
7388 | if (strcmp(trap_item->group_item->group->name, group_name)) | |
7389 | continue; | |
7390 | if (trap_item->action != trap_action && | |
7391 | trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) | |
7392 | continue; | |
7393 | trap_item->action = trap_action; | |
7394 | } | |
7395 | ||
7396 | return 0; | |
7397 | } | |
7398 | ||
0f420b6c | 7399 | list_for_each_entry(trap_item, &devlink->trap_list, list) { |
107f1678 | 7400 | if (strcmp(trap_item->group_item->group->name, group_name)) |
0f420b6c IS |
7401 | continue; |
7402 | err = __devlink_trap_action_set(devlink, trap_item, | |
7403 | trap_action, extack); | |
7404 | if (err) | |
7405 | return err; | |
7406 | } | |
7407 | ||
7408 | return 0; | |
7409 | } | |
7410 | ||
7411 | static int | |
7412 | devlink_trap_group_action_set(struct devlink *devlink, | |
7413 | struct devlink_trap_group_item *group_item, | |
c064875a | 7414 | struct genl_info *info, bool *p_modified) |
0f420b6c IS |
7415 | { |
7416 | enum devlink_trap_action trap_action; | |
7417 | int err; | |
7418 | ||
7419 | if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION]) | |
7420 | return 0; | |
7421 | ||
7422 | err = devlink_trap_action_get_from_info(info, &trap_action); | |
7423 | if (err) { | |
7424 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action"); | |
7425 | return -EINVAL; | |
7426 | } | |
7427 | ||
7428 | err = __devlink_trap_group_action_set(devlink, group_item, trap_action, | |
7429 | info->extack); | |
7430 | if (err) | |
7431 | return err; | |
7432 | ||
c064875a IS |
7433 | *p_modified = true; |
7434 | ||
7435 | return 0; | |
7436 | } | |
7437 | ||
7438 | static int devlink_trap_group_set(struct devlink *devlink, | |
7439 | struct devlink_trap_group_item *group_item, | |
7440 | struct genl_info *info) | |
7441 | { | |
7442 | struct devlink_trap_policer_item *policer_item; | |
7443 | struct netlink_ext_ack *extack = info->extack; | |
7444 | const struct devlink_trap_policer *policer; | |
7445 | struct nlattr **attrs = info->attrs; | |
7446 | int err; | |
7447 | ||
7448 | if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) | |
7449 | return 0; | |
7450 | ||
7451 | if (!devlink->ops->trap_group_set) | |
7452 | return -EOPNOTSUPP; | |
7453 | ||
7454 | policer_item = group_item->policer_item; | |
7455 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) { | |
7456 | u32 policer_id; | |
7457 | ||
7458 | policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]); | |
7459 | policer_item = devlink_trap_policer_item_lookup(devlink, | |
7460 | policer_id); | |
7461 | if (policer_id && !policer_item) { | |
7462 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
7463 | return -ENOENT; | |
7464 | } | |
7465 | } | |
7466 | policer = policer_item ? policer_item->policer : NULL; | |
7467 | ||
c88e11e0 IS |
7468 | err = devlink->ops->trap_group_set(devlink, group_item->group, policer, |
7469 | extack); | |
c064875a IS |
7470 | if (err) |
7471 | return err; | |
7472 | ||
7473 | group_item->policer_item = policer_item; | |
7474 | ||
0f420b6c IS |
7475 | return 0; |
7476 | } | |
7477 | ||
7478 | static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb, | |
7479 | struct genl_info *info) | |
7480 | { | |
7481 | struct netlink_ext_ack *extack = info->extack; | |
7482 | struct devlink *devlink = info->user_ptr[0]; | |
7483 | struct devlink_trap_group_item *group_item; | |
c064875a | 7484 | bool modified = false; |
0f420b6c IS |
7485 | int err; |
7486 | ||
7487 | if (list_empty(&devlink->trap_group_list)) | |
7488 | return -EOPNOTSUPP; | |
7489 | ||
7490 | group_item = devlink_trap_group_item_get_from_info(devlink, info); | |
7491 | if (!group_item) { | |
7492 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group"); | |
7493 | return -ENOENT; | |
7494 | } | |
7495 | ||
c064875a IS |
7496 | err = devlink_trap_group_action_set(devlink, group_item, info, |
7497 | &modified); | |
0f420b6c IS |
7498 | if (err) |
7499 | return err; | |
7500 | ||
c064875a IS |
7501 | err = devlink_trap_group_set(devlink, group_item, info); |
7502 | if (err) | |
7503 | goto err_trap_group_set; | |
7504 | ||
0f420b6c | 7505 | return 0; |
c064875a IS |
7506 | |
7507 | err_trap_group_set: | |
7508 | if (modified) | |
7509 | NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already"); | |
7510 | return err; | |
0f420b6c IS |
7511 | } |
7512 | ||
1e8c6619 IS |
7513 | static struct devlink_trap_policer_item * |
7514 | devlink_trap_policer_item_get_from_info(struct devlink *devlink, | |
7515 | struct genl_info *info) | |
7516 | { | |
7517 | u32 id; | |
7518 | ||
7519 | if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) | |
7520 | return NULL; | |
7521 | id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]); | |
7522 | ||
7523 | return devlink_trap_policer_item_lookup(devlink, id); | |
7524 | } | |
7525 | ||
7526 | static int | |
7527 | devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink, | |
7528 | const struct devlink_trap_policer *policer) | |
7529 | { | |
7530 | struct nlattr *attr; | |
7531 | u64 drops; | |
7532 | int err; | |
7533 | ||
7534 | if (!devlink->ops->trap_policer_counter_get) | |
7535 | return 0; | |
7536 | ||
7537 | err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops); | |
7538 | if (err) | |
7539 | return err; | |
7540 | ||
7541 | attr = nla_nest_start(msg, DEVLINK_ATTR_STATS); | |
7542 | if (!attr) | |
7543 | return -EMSGSIZE; | |
7544 | ||
7545 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops, | |
7546 | DEVLINK_ATTR_PAD)) | |
7547 | goto nla_put_failure; | |
7548 | ||
7549 | nla_nest_end(msg, attr); | |
7550 | ||
7551 | return 0; | |
7552 | ||
7553 | nla_put_failure: | |
7554 | nla_nest_cancel(msg, attr); | |
7555 | return -EMSGSIZE; | |
7556 | } | |
7557 | ||
7558 | static int | |
7559 | devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink, | |
7560 | const struct devlink_trap_policer_item *policer_item, | |
7561 | enum devlink_command cmd, u32 portid, u32 seq, | |
7562 | int flags) | |
7563 | { | |
7564 | void *hdr; | |
7565 | int err; | |
7566 | ||
7567 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
7568 | if (!hdr) | |
7569 | return -EMSGSIZE; | |
7570 | ||
7571 | if (devlink_nl_put_handle(msg, devlink)) | |
7572 | goto nla_put_failure; | |
7573 | ||
7574 | if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID, | |
7575 | policer_item->policer->id)) | |
7576 | goto nla_put_failure; | |
7577 | ||
7578 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE, | |
7579 | policer_item->rate, DEVLINK_ATTR_PAD)) | |
7580 | goto nla_put_failure; | |
7581 | ||
7582 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST, | |
7583 | policer_item->burst, DEVLINK_ATTR_PAD)) | |
7584 | goto nla_put_failure; | |
7585 | ||
7586 | err = devlink_trap_policer_stats_put(msg, devlink, | |
7587 | policer_item->policer); | |
7588 | if (err) | |
7589 | goto nla_put_failure; | |
7590 | ||
7591 | genlmsg_end(msg, hdr); | |
7592 | ||
7593 | return 0; | |
7594 | ||
7595 | nla_put_failure: | |
7596 | genlmsg_cancel(msg, hdr); | |
7597 | return -EMSGSIZE; | |
7598 | } | |
7599 | ||
7600 | static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb, | |
7601 | struct genl_info *info) | |
7602 | { | |
7603 | struct devlink_trap_policer_item *policer_item; | |
7604 | struct netlink_ext_ack *extack = info->extack; | |
7605 | struct devlink *devlink = info->user_ptr[0]; | |
7606 | struct sk_buff *msg; | |
7607 | int err; | |
7608 | ||
7609 | if (list_empty(&devlink->trap_policer_list)) | |
7610 | return -EOPNOTSUPP; | |
7611 | ||
7612 | policer_item = devlink_trap_policer_item_get_from_info(devlink, info); | |
7613 | if (!policer_item) { | |
7614 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
7615 | return -ENOENT; | |
7616 | } | |
7617 | ||
7618 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
7619 | if (!msg) | |
7620 | return -ENOMEM; | |
7621 | ||
7622 | err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, | |
7623 | DEVLINK_CMD_TRAP_POLICER_NEW, | |
7624 | info->snd_portid, info->snd_seq, 0); | |
7625 | if (err) | |
7626 | goto err_trap_policer_fill; | |
7627 | ||
7628 | return genlmsg_reply(msg, info); | |
7629 | ||
7630 | err_trap_policer_fill: | |
7631 | nlmsg_free(msg); | |
7632 | return err; | |
7633 | } | |
7634 | ||
7635 | static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg, | |
7636 | struct netlink_callback *cb) | |
7637 | { | |
7638 | enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW; | |
7639 | struct devlink_trap_policer_item *policer_item; | |
7640 | u32 portid = NETLINK_CB(cb->skb).portid; | |
7641 | struct devlink *devlink; | |
7642 | int start = cb->args[0]; | |
7643 | int idx = 0; | |
7644 | int err; | |
7645 | ||
7646 | mutex_lock(&devlink_mutex); | |
7647 | list_for_each_entry(devlink, &devlink_list, list) { | |
7648 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
7649 | continue; | |
7650 | mutex_lock(&devlink->lock); | |
7651 | list_for_each_entry(policer_item, &devlink->trap_policer_list, | |
7652 | list) { | |
7653 | if (idx < start) { | |
7654 | idx++; | |
7655 | continue; | |
7656 | } | |
7657 | err = devlink_nl_trap_policer_fill(msg, devlink, | |
7658 | policer_item, cmd, | |
7659 | portid, | |
7660 | cb->nlh->nlmsg_seq, | |
7661 | NLM_F_MULTI); | |
7662 | if (err) { | |
7663 | mutex_unlock(&devlink->lock); | |
7664 | goto out; | |
7665 | } | |
7666 | idx++; | |
7667 | } | |
7668 | mutex_unlock(&devlink->lock); | |
7669 | } | |
7670 | out: | |
7671 | mutex_unlock(&devlink_mutex); | |
7672 | ||
7673 | cb->args[0] = idx; | |
7674 | return msg->len; | |
7675 | } | |
7676 | ||
7677 | static int | |
7678 | devlink_trap_policer_set(struct devlink *devlink, | |
7679 | struct devlink_trap_policer_item *policer_item, | |
7680 | struct genl_info *info) | |
7681 | { | |
7682 | struct netlink_ext_ack *extack = info->extack; | |
7683 | struct nlattr **attrs = info->attrs; | |
7684 | u64 rate, burst; | |
7685 | int err; | |
7686 | ||
7687 | rate = policer_item->rate; | |
7688 | burst = policer_item->burst; | |
7689 | ||
7690 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]) | |
7691 | rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]); | |
7692 | ||
7693 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]) | |
7694 | burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]); | |
7695 | ||
7696 | if (rate < policer_item->policer->min_rate) { | |
7697 | NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit"); | |
7698 | return -EINVAL; | |
7699 | } | |
7700 | ||
7701 | if (rate > policer_item->policer->max_rate) { | |
7702 | NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit"); | |
7703 | return -EINVAL; | |
7704 | } | |
7705 | ||
7706 | if (burst < policer_item->policer->min_burst) { | |
7707 | NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit"); | |
7708 | return -EINVAL; | |
7709 | } | |
7710 | ||
7711 | if (burst > policer_item->policer->max_burst) { | |
7712 | NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit"); | |
7713 | return -EINVAL; | |
7714 | } | |
7715 | ||
7716 | err = devlink->ops->trap_policer_set(devlink, policer_item->policer, | |
7717 | rate, burst, info->extack); | |
7718 | if (err) | |
7719 | return err; | |
7720 | ||
7721 | policer_item->rate = rate; | |
7722 | policer_item->burst = burst; | |
7723 | ||
7724 | return 0; | |
7725 | } | |
7726 | ||
7727 | static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb, | |
7728 | struct genl_info *info) | |
7729 | { | |
7730 | struct devlink_trap_policer_item *policer_item; | |
7731 | struct netlink_ext_ack *extack = info->extack; | |
7732 | struct devlink *devlink = info->user_ptr[0]; | |
7733 | ||
7734 | if (list_empty(&devlink->trap_policer_list)) | |
7735 | return -EOPNOTSUPP; | |
7736 | ||
7737 | if (!devlink->ops->trap_policer_set) | |
7738 | return -EOPNOTSUPP; | |
7739 | ||
7740 | policer_item = devlink_trap_policer_item_get_from_info(devlink, info); | |
7741 | if (!policer_item) { | |
7742 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
7743 | return -ENOENT; | |
7744 | } | |
7745 | ||
7746 | return devlink_trap_policer_set(devlink, policer_item, info); | |
7747 | } | |
7748 | ||
bfcd3a46 | 7749 | static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { |
1e8c6619 IS |
7750 | [DEVLINK_ATTR_UNSPEC] = { .strict_start_type = |
7751 | DEVLINK_ATTR_TRAP_POLICER_ID }, | |
bfcd3a46 JP |
7752 | [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING }, |
7753 | [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING }, | |
7754 | [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 }, | |
c49a9440 PP |
7755 | [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO, |
7756 | DEVLINK_PORT_TYPE_IB), | |
bfcd3a46 | 7757 | [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 }, |
bf797471 JP |
7758 | [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 }, |
7759 | [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 }, | |
7760 | [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 }, | |
7761 | [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 }, | |
7762 | [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 }, | |
7763 | [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 }, | |
7764 | [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 }, | |
ba356c90 PP |
7765 | [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY, |
7766 | DEVLINK_ESWITCH_MODE_SWITCHDEV), | |
59bfde01 | 7767 | [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 }, |
f43e9b06 | 7768 | [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 }, |
1555d204 AS |
7769 | [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING }, |
7770 | [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 }, | |
d9f9b9a4 AS |
7771 | [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64}, |
7772 | [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64}, | |
e3b7ca18 MS |
7773 | [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING }, |
7774 | [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 }, | |
7775 | [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 }, | |
d8db7ea5 | 7776 | [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, |
866319bb | 7777 | [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 }, |
ff3b63b8 JK |
7778 | [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 }, |
7779 | [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 }, | |
7afe335a | 7780 | [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING }, |
a1e55ec0 EBE |
7781 | [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 }, |
7782 | [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 }, | |
76726ccb JK |
7783 | [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING }, |
7784 | [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING }, | |
5d5b4128 JK |
7785 | [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] = |
7786 | NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS), | |
0f420b6c IS |
7787 | [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING }, |
7788 | [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 }, | |
7789 | [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING }, | |
070c63f2 JP |
7790 | [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 }, |
7791 | [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 }, | |
7792 | [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 }, | |
48bb52c8 | 7793 | [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 }, |
1e8c6619 IS |
7794 | [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 }, |
7795 | [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 }, | |
7796 | [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 }, | |
a1e8ae90 | 7797 | [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED }, |
ccdf0721 MS |
7798 | [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT, |
7799 | DEVLINK_RELOAD_ACTION_MAX), | |
dc64cc7c | 7800 | [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK), |
cd76dcd6 PP |
7801 | [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 }, |
7802 | [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 }, | |
7803 | [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 }, | |
7804 | [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 }, | |
bfcd3a46 JP |
7805 | }; |
7806 | ||
66a9b928 | 7807 | static const struct genl_small_ops devlink_nl_ops[] = { |
bfcd3a46 JP |
7808 | { |
7809 | .cmd = DEVLINK_CMD_GET, | |
ef6243ac | 7810 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 JP |
7811 | .doit = devlink_nl_cmd_get_doit, |
7812 | .dumpit = devlink_nl_cmd_get_dumpit, | |
bfcd3a46 JP |
7813 | /* can be retrieved by unprivileged users */ |
7814 | }, | |
7815 | { | |
7816 | .cmd = DEVLINK_CMD_PORT_GET, | |
ef6243ac | 7817 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 JP |
7818 | .doit = devlink_nl_cmd_port_get_doit, |
7819 | .dumpit = devlink_nl_cmd_port_get_dumpit, | |
bfcd3a46 JP |
7820 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
7821 | /* can be retrieved by unprivileged users */ | |
7822 | }, | |
7823 | { | |
7824 | .cmd = DEVLINK_CMD_PORT_SET, | |
ef6243ac | 7825 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7826 | .doit = devlink_nl_cmd_port_set_doit, |
bfcd3a46 JP |
7827 | .flags = GENL_ADMIN_PERM, |
7828 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, | |
7829 | }, | |
7830 | { | |
7831 | .cmd = DEVLINK_CMD_PORT_SPLIT, | |
ef6243ac | 7832 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7833 | .doit = devlink_nl_cmd_port_split_doit, |
bfcd3a46 | 7834 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7835 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
bfcd3a46 JP |
7836 | }, |
7837 | { | |
7838 | .cmd = DEVLINK_CMD_PORT_UNSPLIT, | |
ef6243ac | 7839 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7840 | .doit = devlink_nl_cmd_port_unsplit_doit, |
bfcd3a46 | 7841 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7842 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
bfcd3a46 | 7843 | }, |
cd76dcd6 PP |
7844 | { |
7845 | .cmd = DEVLINK_CMD_PORT_NEW, | |
7846 | .doit = devlink_nl_cmd_port_new_doit, | |
7847 | .flags = GENL_ADMIN_PERM, | |
7848 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, | |
7849 | }, | |
7850 | { | |
7851 | .cmd = DEVLINK_CMD_PORT_DEL, | |
7852 | .doit = devlink_nl_cmd_port_del_doit, | |
7853 | .flags = GENL_ADMIN_PERM, | |
7854 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, | |
7855 | }, | |
bf797471 JP |
7856 | { |
7857 | .cmd = DEVLINK_CMD_SB_GET, | |
ef6243ac | 7858 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7859 | .doit = devlink_nl_cmd_sb_get_doit, |
7860 | .dumpit = devlink_nl_cmd_sb_get_dumpit, | |
bf797471 JP |
7861 | /* can be retrieved by unprivileged users */ |
7862 | }, | |
7863 | { | |
7864 | .cmd = DEVLINK_CMD_SB_POOL_GET, | |
ef6243ac | 7865 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7866 | .doit = devlink_nl_cmd_sb_pool_get_doit, |
7867 | .dumpit = devlink_nl_cmd_sb_pool_get_dumpit, | |
bf797471 JP |
7868 | /* can be retrieved by unprivileged users */ |
7869 | }, | |
7870 | { | |
7871 | .cmd = DEVLINK_CMD_SB_POOL_SET, | |
ef6243ac | 7872 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7873 | .doit = devlink_nl_cmd_sb_pool_set_doit, |
bf797471 | 7874 | .flags = GENL_ADMIN_PERM, |
bf797471 JP |
7875 | }, |
7876 | { | |
7877 | .cmd = DEVLINK_CMD_SB_PORT_POOL_GET, | |
ef6243ac | 7878 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7879 | .doit = devlink_nl_cmd_sb_port_pool_get_doit, |
7880 | .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit, | |
637989b5 | 7881 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7882 | /* can be retrieved by unprivileged users */ |
7883 | }, | |
7884 | { | |
7885 | .cmd = DEVLINK_CMD_SB_PORT_POOL_SET, | |
ef6243ac | 7886 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7887 | .doit = devlink_nl_cmd_sb_port_pool_set_doit, |
bf797471 | 7888 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7889 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7890 | }, |
7891 | { | |
7892 | .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET, | |
ef6243ac | 7893 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7894 | .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit, |
7895 | .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit, | |
637989b5 | 7896 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7897 | /* can be retrieved by unprivileged users */ |
7898 | }, | |
7899 | { | |
7900 | .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET, | |
ef6243ac | 7901 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7902 | .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit, |
bf797471 | 7903 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7904 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 | 7905 | }, |
df38dafd JP |
7906 | { |
7907 | .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT, | |
ef6243ac | 7908 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
df38dafd | 7909 | .doit = devlink_nl_cmd_sb_occ_snapshot_doit, |
df38dafd | 7910 | .flags = GENL_ADMIN_PERM, |
df38dafd JP |
7911 | }, |
7912 | { | |
7913 | .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR, | |
ef6243ac | 7914 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
df38dafd | 7915 | .doit = devlink_nl_cmd_sb_occ_max_clear_doit, |
df38dafd | 7916 | .flags = GENL_ADMIN_PERM, |
df38dafd | 7917 | }, |
08f4b591 | 7918 | { |
adf200f3 | 7919 | .cmd = DEVLINK_CMD_ESWITCH_GET, |
ef6243ac | 7920 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
adf200f3 | 7921 | .doit = devlink_nl_cmd_eswitch_get_doit, |
08f4b591 | 7922 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7923 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
08f4b591 OG |
7924 | }, |
7925 | { | |
adf200f3 | 7926 | .cmd = DEVLINK_CMD_ESWITCH_SET, |
ef6243ac | 7927 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
adf200f3 | 7928 | .doit = devlink_nl_cmd_eswitch_set_doit, |
08f4b591 | 7929 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7930 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
08f4b591 | 7931 | }, |
1555d204 AS |
7932 | { |
7933 | .cmd = DEVLINK_CMD_DPIPE_TABLE_GET, | |
ef6243ac | 7934 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7935 | .doit = devlink_nl_cmd_dpipe_table_get, |
67ae686b | 7936 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7937 | }, |
7938 | { | |
7939 | .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET, | |
ef6243ac | 7940 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7941 | .doit = devlink_nl_cmd_dpipe_entries_get, |
67ae686b | 7942 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7943 | }, |
7944 | { | |
7945 | .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET, | |
ef6243ac | 7946 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7947 | .doit = devlink_nl_cmd_dpipe_headers_get, |
67ae686b | 7948 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7949 | }, |
7950 | { | |
7951 | .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET, | |
ef6243ac | 7952 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7953 | .doit = devlink_nl_cmd_dpipe_table_counters_set, |
1555d204 | 7954 | .flags = GENL_ADMIN_PERM, |
1555d204 | 7955 | }, |
d9f9b9a4 AS |
7956 | { |
7957 | .cmd = DEVLINK_CMD_RESOURCE_SET, | |
ef6243ac | 7958 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9f9b9a4 | 7959 | .doit = devlink_nl_cmd_resource_set, |
d9f9b9a4 | 7960 | .flags = GENL_ADMIN_PERM, |
d9f9b9a4 AS |
7961 | }, |
7962 | { | |
7963 | .cmd = DEVLINK_CMD_RESOURCE_DUMP, | |
ef6243ac | 7964 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9f9b9a4 | 7965 | .doit = devlink_nl_cmd_resource_dump, |
67ae686b | 7966 | /* can be retrieved by unprivileged users */ |
d9f9b9a4 | 7967 | }, |
2d8dc5bb AS |
7968 | { |
7969 | .cmd = DEVLINK_CMD_RELOAD, | |
ef6243ac | 7970 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
2d8dc5bb | 7971 | .doit = devlink_nl_cmd_reload, |
2d8dc5bb | 7972 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7973 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
2d8dc5bb | 7974 | }, |
45f05def MS |
7975 | { |
7976 | .cmd = DEVLINK_CMD_PARAM_GET, | |
ef6243ac | 7977 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
45f05def MS |
7978 | .doit = devlink_nl_cmd_param_get_doit, |
7979 | .dumpit = devlink_nl_cmd_param_get_dumpit, | |
45f05def MS |
7980 | /* can be retrieved by unprivileged users */ |
7981 | }, | |
e3b7ca18 MS |
7982 | { |
7983 | .cmd = DEVLINK_CMD_PARAM_SET, | |
ef6243ac | 7984 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
e3b7ca18 | 7985 | .doit = devlink_nl_cmd_param_set_doit, |
e3b7ca18 | 7986 | .flags = GENL_ADMIN_PERM, |
e3b7ca18 | 7987 | }, |
f4601dee VV |
7988 | { |
7989 | .cmd = DEVLINK_CMD_PORT_PARAM_GET, | |
ef6243ac | 7990 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f4601dee VV |
7991 | .doit = devlink_nl_cmd_port_param_get_doit, |
7992 | .dumpit = devlink_nl_cmd_port_param_get_dumpit, | |
f4601dee VV |
7993 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
7994 | /* can be retrieved by unprivileged users */ | |
7995 | }, | |
9c54873b VV |
7996 | { |
7997 | .cmd = DEVLINK_CMD_PORT_PARAM_SET, | |
ef6243ac | 7998 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9c54873b | 7999 | .doit = devlink_nl_cmd_port_param_set_doit, |
9c54873b VV |
8000 | .flags = GENL_ADMIN_PERM, |
8001 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, | |
8002 | }, | |
d8db7ea5 AV |
8003 | { |
8004 | .cmd = DEVLINK_CMD_REGION_GET, | |
ef6243ac | 8005 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d8db7ea5 AV |
8006 | .doit = devlink_nl_cmd_region_get_doit, |
8007 | .dumpit = devlink_nl_cmd_region_get_dumpit, | |
d8db7ea5 | 8008 | .flags = GENL_ADMIN_PERM, |
d8db7ea5 | 8009 | }, |
b9a17abf JK |
8010 | { |
8011 | .cmd = DEVLINK_CMD_REGION_NEW, | |
8012 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
8013 | .doit = devlink_nl_cmd_region_new, | |
8014 | .flags = GENL_ADMIN_PERM, | |
b9a17abf | 8015 | }, |
866319bb AV |
8016 | { |
8017 | .cmd = DEVLINK_CMD_REGION_DEL, | |
ef6243ac | 8018 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
866319bb | 8019 | .doit = devlink_nl_cmd_region_del, |
866319bb | 8020 | .flags = GENL_ADMIN_PERM, |
866319bb | 8021 | }, |
4e54795a AV |
8022 | { |
8023 | .cmd = DEVLINK_CMD_REGION_READ, | |
ee85da53 JP |
8024 | .validate = GENL_DONT_VALIDATE_STRICT | |
8025 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
4e54795a | 8026 | .dumpit = devlink_nl_cmd_region_read_dumpit, |
4e54795a | 8027 | .flags = GENL_ADMIN_PERM, |
4e54795a | 8028 | }, |
f9cf2288 JK |
8029 | { |
8030 | .cmd = DEVLINK_CMD_INFO_GET, | |
ef6243ac | 8031 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f9cf2288 JK |
8032 | .doit = devlink_nl_cmd_info_get_doit, |
8033 | .dumpit = devlink_nl_cmd_info_get_dumpit, | |
f9cf2288 JK |
8034 | /* can be retrieved by unprivileged users */ |
8035 | }, | |
7afe335a EBE |
8036 | { |
8037 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET, | |
ef6243ac | 8038 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
7afe335a EBE |
8039 | .doit = devlink_nl_cmd_health_reporter_get_doit, |
8040 | .dumpit = devlink_nl_cmd_health_reporter_get_dumpit, | |
f4f54166 | 8041 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 8042 | DEVLINK_NL_FLAG_NO_LOCK, |
7afe335a EBE |
8043 | /* can be retrieved by unprivileged users */ |
8044 | }, | |
a1e55ec0 EBE |
8045 | { |
8046 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET, | |
ef6243ac | 8047 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
a1e55ec0 | 8048 | .doit = devlink_nl_cmd_health_reporter_set_doit, |
a1e55ec0 | 8049 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 8050 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 8051 | DEVLINK_NL_FLAG_NO_LOCK, |
a1e55ec0 | 8052 | }, |
20a0943a EBE |
8053 | { |
8054 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER, | |
ef6243ac | 8055 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
20a0943a | 8056 | .doit = devlink_nl_cmd_health_reporter_recover_doit, |
20a0943a | 8057 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 8058 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 8059 | DEVLINK_NL_FLAG_NO_LOCK, |
20a0943a | 8060 | }, |
fca42a27 EBE |
8061 | { |
8062 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, | |
ef6243ac | 8063 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
fca42a27 | 8064 | .doit = devlink_nl_cmd_health_reporter_diagnose_doit, |
fca42a27 | 8065 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 8066 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 8067 | DEVLINK_NL_FLAG_NO_LOCK, |
fca42a27 | 8068 | }, |
35455e23 EBE |
8069 | { |
8070 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, | |
82a843de JP |
8071 | .validate = GENL_DONT_VALIDATE_STRICT | |
8072 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
e44ef4e4 | 8073 | .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit, |
35455e23 | 8074 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 8075 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
35455e23 EBE |
8076 | DEVLINK_NL_FLAG_NO_LOCK, |
8077 | }, | |
8078 | { | |
8079 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR, | |
ef6243ac | 8080 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
35455e23 | 8081 | .doit = devlink_nl_cmd_health_reporter_dump_clear_doit, |
35455e23 | 8082 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 8083 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
35455e23 EBE |
8084 | DEVLINK_NL_FLAG_NO_LOCK, |
8085 | }, | |
e2ce94dc JP |
8086 | { |
8087 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST, | |
8088 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
8089 | .doit = devlink_nl_cmd_health_reporter_test_doit, | |
8090 | .flags = GENL_ADMIN_PERM, | |
8091 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | | |
8092 | DEVLINK_NL_FLAG_NO_LOCK, | |
8093 | }, | |
76726ccb JK |
8094 | { |
8095 | .cmd = DEVLINK_CMD_FLASH_UPDATE, | |
ef6243ac | 8096 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
76726ccb | 8097 | .doit = devlink_nl_cmd_flash_update, |
76726ccb | 8098 | .flags = GENL_ADMIN_PERM, |
76726ccb | 8099 | }, |
0f420b6c IS |
8100 | { |
8101 | .cmd = DEVLINK_CMD_TRAP_GET, | |
8102 | .doit = devlink_nl_cmd_trap_get_doit, | |
8103 | .dumpit = devlink_nl_cmd_trap_get_dumpit, | |
0f420b6c IS |
8104 | /* can be retrieved by unprivileged users */ |
8105 | }, | |
8106 | { | |
8107 | .cmd = DEVLINK_CMD_TRAP_SET, | |
8108 | .doit = devlink_nl_cmd_trap_set_doit, | |
8109 | .flags = GENL_ADMIN_PERM, | |
0f420b6c IS |
8110 | }, |
8111 | { | |
8112 | .cmd = DEVLINK_CMD_TRAP_GROUP_GET, | |
8113 | .doit = devlink_nl_cmd_trap_group_get_doit, | |
8114 | .dumpit = devlink_nl_cmd_trap_group_get_dumpit, | |
0f420b6c IS |
8115 | /* can be retrieved by unprivileged users */ |
8116 | }, | |
8117 | { | |
8118 | .cmd = DEVLINK_CMD_TRAP_GROUP_SET, | |
8119 | .doit = devlink_nl_cmd_trap_group_set_doit, | |
8120 | .flags = GENL_ADMIN_PERM, | |
0f420b6c | 8121 | }, |
1e8c6619 IS |
8122 | { |
8123 | .cmd = DEVLINK_CMD_TRAP_POLICER_GET, | |
8124 | .doit = devlink_nl_cmd_trap_policer_get_doit, | |
8125 | .dumpit = devlink_nl_cmd_trap_policer_get_dumpit, | |
1e8c6619 IS |
8126 | /* can be retrieved by unprivileged users */ |
8127 | }, | |
8128 | { | |
8129 | .cmd = DEVLINK_CMD_TRAP_POLICER_SET, | |
8130 | .doit = devlink_nl_cmd_trap_policer_set_doit, | |
8131 | .flags = GENL_ADMIN_PERM, | |
1e8c6619 | 8132 | }, |
bfcd3a46 JP |
8133 | }; |
8134 | ||
56989f6d | 8135 | static struct genl_family devlink_nl_family __ro_after_init = { |
489111e5 JB |
8136 | .name = DEVLINK_GENL_NAME, |
8137 | .version = DEVLINK_GENL_VERSION, | |
8138 | .maxattr = DEVLINK_ATTR_MAX, | |
3b0f31f2 | 8139 | .policy = devlink_nl_policy, |
489111e5 JB |
8140 | .netnsok = true, |
8141 | .pre_doit = devlink_nl_pre_doit, | |
8142 | .post_doit = devlink_nl_post_doit, | |
8143 | .module = THIS_MODULE, | |
66a9b928 JK |
8144 | .small_ops = devlink_nl_ops, |
8145 | .n_small_ops = ARRAY_SIZE(devlink_nl_ops), | |
489111e5 JB |
8146 | .mcgrps = devlink_nl_mcgrps, |
8147 | .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps), | |
8148 | }; | |
8149 | ||
ccdf0721 MS |
8150 | static bool devlink_reload_actions_valid(const struct devlink_ops *ops) |
8151 | { | |
dc64cc7c MS |
8152 | const struct devlink_reload_combination *comb; |
8153 | int i; | |
8154 | ||
ccdf0721 MS |
8155 | if (!devlink_reload_supported(ops)) { |
8156 | if (WARN_ON(ops->reload_actions)) | |
8157 | return false; | |
8158 | return true; | |
8159 | } | |
8160 | ||
8161 | if (WARN_ON(!ops->reload_actions || | |
8162 | ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) || | |
8163 | ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX))) | |
8164 | return false; | |
dc64cc7c MS |
8165 | |
8166 | if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) || | |
8167 | ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX))) | |
8168 | return false; | |
8169 | ||
8170 | for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) { | |
8171 | comb = &devlink_reload_invalid_combinations[i]; | |
8172 | if (ops->reload_actions == BIT(comb->action) && | |
8173 | ops->reload_limits == BIT(comb->limit)) | |
8174 | return false; | |
8175 | } | |
ccdf0721 MS |
8176 | return true; |
8177 | } | |
8178 | ||
bfcd3a46 JP |
8179 | /** |
8180 | * devlink_alloc - Allocate new devlink instance resources | |
8181 | * | |
8182 | * @ops: ops | |
8183 | * @priv_size: size of user private data | |
8184 | * | |
8185 | * Allocate new devlink instance resources, including devlink index | |
8186 | * and name. | |
8187 | */ | |
8188 | struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) | |
8189 | { | |
8190 | struct devlink *devlink; | |
8191 | ||
be6fe1d8 JK |
8192 | if (WARN_ON(!ops)) |
8193 | return NULL; | |
8194 | ||
ccdf0721 MS |
8195 | if (!devlink_reload_actions_valid(ops)) |
8196 | return NULL; | |
8197 | ||
bfcd3a46 JP |
8198 | devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL); |
8199 | if (!devlink) | |
8200 | return NULL; | |
8201 | devlink->ops = ops; | |
12102436 | 8202 | xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC); |
8273fd84 | 8203 | __devlink_net_set(devlink, &init_net); |
bfcd3a46 | 8204 | INIT_LIST_HEAD(&devlink->port_list); |
bf797471 | 8205 | INIT_LIST_HEAD(&devlink->sb_list); |
1555d204 | 8206 | INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list); |
d9f9b9a4 | 8207 | INIT_LIST_HEAD(&devlink->resource_list); |
eabaef18 | 8208 | INIT_LIST_HEAD(&devlink->param_list); |
b16ebe92 | 8209 | INIT_LIST_HEAD(&devlink->region_list); |
a0bdcc59 | 8210 | INIT_LIST_HEAD(&devlink->reporter_list); |
0f420b6c IS |
8211 | INIT_LIST_HEAD(&devlink->trap_list); |
8212 | INIT_LIST_HEAD(&devlink->trap_group_list); | |
1e8c6619 | 8213 | INIT_LIST_HEAD(&devlink->trap_policer_list); |
2406e7e5 | 8214 | mutex_init(&devlink->lock); |
b587bdaf | 8215 | mutex_init(&devlink->reporters_lock); |
bfcd3a46 JP |
8216 | return devlink; |
8217 | } | |
8218 | EXPORT_SYMBOL_GPL(devlink_alloc); | |
8219 | ||
8220 | /** | |
8221 | * devlink_register - Register devlink instance | |
8222 | * | |
8223 | * @devlink: devlink | |
eeaadd82 | 8224 | * @dev: parent device |
bfcd3a46 JP |
8225 | */ |
8226 | int devlink_register(struct devlink *devlink, struct device *dev) | |
8227 | { | |
bfcd3a46 | 8228 | devlink->dev = dev; |
8273fd84 | 8229 | devlink->registered = true; |
6553e561 | 8230 | mutex_lock(&devlink_mutex); |
bfcd3a46 JP |
8231 | list_add_tail(&devlink->list, &devlink_list); |
8232 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
8233 | mutex_unlock(&devlink_mutex); | |
8234 | return 0; | |
8235 | } | |
8236 | EXPORT_SYMBOL_GPL(devlink_register); | |
8237 | ||
8238 | /** | |
8239 | * devlink_unregister - Unregister devlink instance | |
8240 | * | |
8241 | * @devlink: devlink | |
8242 | */ | |
8243 | void devlink_unregister(struct devlink *devlink) | |
8244 | { | |
8245 | mutex_lock(&devlink_mutex); | |
69d56e0e | 8246 | WARN_ON(devlink_reload_supported(devlink->ops) && |
a0c76345 | 8247 | devlink->reload_enabled); |
bfcd3a46 JP |
8248 | devlink_notify(devlink, DEVLINK_CMD_DEL); |
8249 | list_del(&devlink->list); | |
8250 | mutex_unlock(&devlink_mutex); | |
8251 | } | |
8252 | EXPORT_SYMBOL_GPL(devlink_unregister); | |
8253 | ||
a0c76345 JP |
8254 | /** |
8255 | * devlink_reload_enable - Enable reload of devlink instance | |
8256 | * | |
8257 | * @devlink: devlink | |
8258 | * | |
8259 | * Should be called at end of device initialization | |
8260 | * process when reload operation is supported. | |
8261 | */ | |
8262 | void devlink_reload_enable(struct devlink *devlink) | |
8263 | { | |
8264 | mutex_lock(&devlink_mutex); | |
8265 | devlink->reload_enabled = true; | |
8266 | mutex_unlock(&devlink_mutex); | |
8267 | } | |
8268 | EXPORT_SYMBOL_GPL(devlink_reload_enable); | |
8269 | ||
8270 | /** | |
8271 | * devlink_reload_disable - Disable reload of devlink instance | |
8272 | * | |
8273 | * @devlink: devlink | |
8274 | * | |
8275 | * Should be called at the beginning of device cleanup | |
8276 | * process when reload operation is supported. | |
8277 | */ | |
8278 | void devlink_reload_disable(struct devlink *devlink) | |
8279 | { | |
8280 | mutex_lock(&devlink_mutex); | |
8281 | /* Mutex is taken which ensures that no reload operation is in | |
8282 | * progress while setting up forbidded flag. | |
8283 | */ | |
8284 | devlink->reload_enabled = false; | |
8285 | mutex_unlock(&devlink_mutex); | |
8286 | } | |
8287 | EXPORT_SYMBOL_GPL(devlink_reload_disable); | |
8288 | ||
bfcd3a46 JP |
8289 | /** |
8290 | * devlink_free - Free devlink instance resources | |
8291 | * | |
8292 | * @devlink: devlink | |
8293 | */ | |
8294 | void devlink_free(struct devlink *devlink) | |
8295 | { | |
b587bdaf | 8296 | mutex_destroy(&devlink->reporters_lock); |
375cf8c6 | 8297 | mutex_destroy(&devlink->lock); |
1e8c6619 | 8298 | WARN_ON(!list_empty(&devlink->trap_policer_list)); |
0f420b6c IS |
8299 | WARN_ON(!list_empty(&devlink->trap_group_list)); |
8300 | WARN_ON(!list_empty(&devlink->trap_list)); | |
b904aada PP |
8301 | WARN_ON(!list_empty(&devlink->reporter_list)); |
8302 | WARN_ON(!list_empty(&devlink->region_list)); | |
8303 | WARN_ON(!list_empty(&devlink->param_list)); | |
8304 | WARN_ON(!list_empty(&devlink->resource_list)); | |
8305 | WARN_ON(!list_empty(&devlink->dpipe_table_list)); | |
8306 | WARN_ON(!list_empty(&devlink->sb_list)); | |
8307 | WARN_ON(!list_empty(&devlink->port_list)); | |
8308 | ||
12102436 JK |
8309 | xa_destroy(&devlink->snapshot_ids); |
8310 | ||
bfcd3a46 JP |
8311 | kfree(devlink); |
8312 | } | |
8313 | EXPORT_SYMBOL_GPL(devlink_free); | |
8314 | ||
136bf27f JP |
8315 | static void devlink_port_type_warn(struct work_struct *work) |
8316 | { | |
8317 | WARN(true, "Type was not set for devlink port."); | |
8318 | } | |
8319 | ||
8320 | static bool devlink_port_type_should_warn(struct devlink_port *devlink_port) | |
8321 | { | |
8322 | /* Ignore CPU and DSA flavours. */ | |
8323 | return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU && | |
cf116634 AL |
8324 | devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA && |
8325 | devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED; | |
136bf27f JP |
8326 | } |
8327 | ||
4c582234 | 8328 | #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600) |
136bf27f JP |
8329 | |
8330 | static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port) | |
8331 | { | |
8332 | if (!devlink_port_type_should_warn(devlink_port)) | |
8333 | return; | |
8334 | /* Schedule a work to WARN in case driver does not set port | |
8335 | * type within timeout. | |
8336 | */ | |
8337 | schedule_delayed_work(&devlink_port->type_warn_dw, | |
8338 | DEVLINK_PORT_TYPE_WARN_TIMEOUT); | |
8339 | } | |
8340 | ||
8341 | static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port) | |
8342 | { | |
8343 | if (!devlink_port_type_should_warn(devlink_port)) | |
8344 | return; | |
8345 | cancel_delayed_work_sync(&devlink_port->type_warn_dw); | |
8346 | } | |
8347 | ||
bfcd3a46 JP |
8348 | /** |
8349 | * devlink_port_register - Register devlink port | |
8350 | * | |
8351 | * @devlink: devlink | |
8352 | * @devlink_port: devlink port | |
eeaadd82 | 8353 | * @port_index: driver-specific numerical identifier of the port |
bfcd3a46 JP |
8354 | * |
8355 | * Register devlink port with provided port index. User can use | |
8356 | * any indexing, even hw-related one. devlink_port structure | |
8357 | * is convenient to be embedded inside user driver private structure. | |
8358 | * Note that the caller should take care of zeroing the devlink_port | |
8359 | * structure. | |
8360 | */ | |
8361 | int devlink_port_register(struct devlink *devlink, | |
8362 | struct devlink_port *devlink_port, | |
8363 | unsigned int port_index) | |
8364 | { | |
2406e7e5 | 8365 | mutex_lock(&devlink->lock); |
bfcd3a46 | 8366 | if (devlink_port_index_exists(devlink, port_index)) { |
2406e7e5 | 8367 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
8368 | return -EEXIST; |
8369 | } | |
8370 | devlink_port->devlink = devlink; | |
8371 | devlink_port->index = port_index; | |
bfcd3a46 | 8372 | devlink_port->registered = true; |
b8f97554 | 8373 | spin_lock_init(&devlink_port->type_lock); |
79604c5d PP |
8374 | INIT_LIST_HEAD(&devlink_port->reporter_list); |
8375 | mutex_init(&devlink_port->reporters_lock); | |
bfcd3a46 | 8376 | list_add_tail(&devlink_port->list, &devlink->port_list); |
39e6160e | 8377 | INIT_LIST_HEAD(&devlink_port->param_list); |
544e7c33 | 8378 | INIT_LIST_HEAD(&devlink_port->region_list); |
2406e7e5 | 8379 | mutex_unlock(&devlink->lock); |
136bf27f JP |
8380 | INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn); |
8381 | devlink_port_type_warn_schedule(devlink_port); | |
bfcd3a46 JP |
8382 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
8383 | return 0; | |
8384 | } | |
8385 | EXPORT_SYMBOL_GPL(devlink_port_register); | |
8386 | ||
8387 | /** | |
8388 | * devlink_port_unregister - Unregister devlink port | |
8389 | * | |
8390 | * @devlink_port: devlink port | |
8391 | */ | |
8392 | void devlink_port_unregister(struct devlink_port *devlink_port) | |
8393 | { | |
2406e7e5 AS |
8394 | struct devlink *devlink = devlink_port->devlink; |
8395 | ||
136bf27f | 8396 | devlink_port_type_warn_cancel(devlink_port); |
bfcd3a46 | 8397 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL); |
2406e7e5 | 8398 | mutex_lock(&devlink->lock); |
bfcd3a46 | 8399 | list_del(&devlink_port->list); |
2406e7e5 | 8400 | mutex_unlock(&devlink->lock); |
79604c5d | 8401 | WARN_ON(!list_empty(&devlink_port->reporter_list)); |
544e7c33 | 8402 | WARN_ON(!list_empty(&devlink_port->region_list)); |
79604c5d | 8403 | mutex_destroy(&devlink_port->reporters_lock); |
bfcd3a46 JP |
8404 | } |
8405 | EXPORT_SYMBOL_GPL(devlink_port_unregister); | |
8406 | ||
8407 | static void __devlink_port_type_set(struct devlink_port *devlink_port, | |
8408 | enum devlink_port_type type, | |
8409 | void *type_dev) | |
8410 | { | |
2b239e70 JP |
8411 | if (WARN_ON(!devlink_port->registered)) |
8412 | return; | |
136bf27f | 8413 | devlink_port_type_warn_cancel(devlink_port); |
0f420b6c | 8414 | spin_lock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
8415 | devlink_port->type = type; |
8416 | devlink_port->type_dev = type_dev; | |
0f420b6c | 8417 | spin_unlock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
8418 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
8419 | } | |
8420 | ||
3ea87ca7 JK |
8421 | static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port, |
8422 | struct net_device *netdev) | |
bfcd3a46 | 8423 | { |
119c0b57 JP |
8424 | const struct net_device_ops *ops = netdev->netdev_ops; |
8425 | ||
746364f2 JP |
8426 | /* If driver registers devlink port, it should set devlink port |
8427 | * attributes accordingly so the compat functions are called | |
8428 | * and the original ops are not used. | |
8429 | */ | |
119c0b57 | 8430 | if (ops->ndo_get_phys_port_name) { |
746364f2 JP |
8431 | /* Some drivers use the same set of ndos for netdevs |
8432 | * that have devlink_port registered and also for | |
8433 | * those who don't. Make sure that ndo_get_phys_port_name | |
8434 | * returns -EOPNOTSUPP here in case it is defined. | |
8435 | * Warn if not. | |
8436 | */ | |
746364f2 JP |
8437 | char name[IFNAMSIZ]; |
8438 | int err; | |
8439 | ||
8440 | err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name)); | |
8441 | WARN_ON(err != -EOPNOTSUPP); | |
8442 | } | |
119c0b57 JP |
8443 | if (ops->ndo_get_port_parent_id) { |
8444 | /* Some drivers use the same set of ndos for netdevs | |
8445 | * that have devlink_port registered and also for | |
8446 | * those who don't. Make sure that ndo_get_port_parent_id | |
8447 | * returns -EOPNOTSUPP here in case it is defined. | |
8448 | * Warn if not. | |
8449 | */ | |
8450 | struct netdev_phys_item_id ppid; | |
8451 | int err; | |
8452 | ||
8453 | err = ops->ndo_get_port_parent_id(netdev, &ppid); | |
8454 | WARN_ON(err != -EOPNOTSUPP); | |
8455 | } | |
3ea87ca7 JK |
8456 | } |
8457 | ||
8458 | /** | |
8459 | * devlink_port_type_eth_set - Set port type to Ethernet | |
8460 | * | |
8461 | * @devlink_port: devlink port | |
8462 | * @netdev: related netdevice | |
8463 | */ | |
8464 | void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
8465 | struct net_device *netdev) | |
8466 | { | |
8467 | if (netdev) | |
8468 | devlink_port_type_netdev_checks(devlink_port, netdev); | |
8469 | else | |
8470 | dev_warn(devlink_port->devlink->dev, | |
8471 | "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n", | |
8472 | devlink_port->index); | |
8473 | ||
773b1f38 | 8474 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev); |
bfcd3a46 JP |
8475 | } |
8476 | EXPORT_SYMBOL_GPL(devlink_port_type_eth_set); | |
8477 | ||
8478 | /** | |
8479 | * devlink_port_type_ib_set - Set port type to InfiniBand | |
8480 | * | |
8481 | * @devlink_port: devlink port | |
8482 | * @ibdev: related IB device | |
8483 | */ | |
8484 | void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
8485 | struct ib_device *ibdev) | |
8486 | { | |
773b1f38 | 8487 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev); |
bfcd3a46 JP |
8488 | } |
8489 | EXPORT_SYMBOL_GPL(devlink_port_type_ib_set); | |
8490 | ||
8491 | /** | |
8492 | * devlink_port_type_clear - Clear port type | |
8493 | * | |
8494 | * @devlink_port: devlink port | |
8495 | */ | |
8496 | void devlink_port_type_clear(struct devlink_port *devlink_port) | |
8497 | { | |
773b1f38 | 8498 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL); |
136bf27f | 8499 | devlink_port_type_warn_schedule(devlink_port); |
bfcd3a46 JP |
8500 | } |
8501 | EXPORT_SYMBOL_GPL(devlink_port_type_clear); | |
8502 | ||
378ef01b | 8503 | static int __devlink_port_attrs_set(struct devlink_port *devlink_port, |
71ad8d55 | 8504 | enum devlink_port_flavour flavour) |
378ef01b PP |
8505 | { |
8506 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
8507 | ||
10a429ba | 8508 | devlink_port->attrs_set = true; |
378ef01b | 8509 | attrs->flavour = flavour; |
71ad8d55 | 8510 | if (attrs->switch_id.id_len) { |
46737a19 | 8511 | devlink_port->switch_port = true; |
71ad8d55 DR |
8512 | if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN)) |
8513 | attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN; | |
378ef01b | 8514 | } else { |
46737a19 | 8515 | devlink_port->switch_port = false; |
378ef01b PP |
8516 | } |
8517 | return 0; | |
8518 | } | |
8519 | ||
bfcd3a46 | 8520 | /** |
b9ffcbaf | 8521 | * devlink_port_attrs_set - Set port attributes |
bfcd3a46 JP |
8522 | * |
8523 | * @devlink_port: devlink port | |
71ad8d55 | 8524 | * @attrs: devlink port attrs |
bfcd3a46 | 8525 | */ |
b9ffcbaf | 8526 | void devlink_port_attrs_set(struct devlink_port *devlink_port, |
71ad8d55 | 8527 | struct devlink_port_attrs *attrs) |
bfcd3a46 | 8528 | { |
378ef01b | 8529 | int ret; |
b9ffcbaf | 8530 | |
9f73bd1c PP |
8531 | if (WARN_ON(devlink_port->registered)) |
8532 | return; | |
71ad8d55 DR |
8533 | devlink_port->attrs = *attrs; |
8534 | ret = __devlink_port_attrs_set(devlink_port, attrs->flavour); | |
378ef01b | 8535 | if (ret) |
45b86112 | 8536 | return; |
a0f49b54 | 8537 | WARN_ON(attrs->splittable && attrs->split); |
bfcd3a46 | 8538 | } |
b9ffcbaf | 8539 | EXPORT_SYMBOL_GPL(devlink_port_attrs_set); |
bfcd3a46 | 8540 | |
98fd2d65 PP |
8541 | /** |
8542 | * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes | |
8543 | * | |
8544 | * @devlink_port: devlink port | |
3a2d9588 | 8545 | * @controller: associated controller number for the devlink port instance |
98fd2d65 | 8546 | * @pf: associated PF for the devlink port instance |
05b595e9 | 8547 | * @external: indicates if the port is for an external controller |
98fd2d65 | 8548 | */ |
3a2d9588 PP |
8549 | void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller, |
8550 | u16 pf, bool external) | |
98fd2d65 PP |
8551 | { |
8552 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
8553 | int ret; | |
8554 | ||
9f73bd1c PP |
8555 | if (WARN_ON(devlink_port->registered)) |
8556 | return; | |
98fd2d65 | 8557 | ret = __devlink_port_attrs_set(devlink_port, |
71ad8d55 | 8558 | DEVLINK_PORT_FLAVOUR_PCI_PF); |
98fd2d65 PP |
8559 | if (ret) |
8560 | return; | |
3a2d9588 | 8561 | attrs->pci_pf.controller = controller; |
98fd2d65 | 8562 | attrs->pci_pf.pf = pf; |
05b595e9 | 8563 | attrs->pci_pf.external = external; |
98fd2d65 PP |
8564 | } |
8565 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set); | |
8566 | ||
e41b6bf3 PP |
8567 | /** |
8568 | * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes | |
8569 | * | |
8570 | * @devlink_port: devlink port | |
3a2d9588 | 8571 | * @controller: associated controller number for the devlink port instance |
e41b6bf3 PP |
8572 | * @pf: associated PF for the devlink port instance |
8573 | * @vf: associated VF of a PF for the devlink port instance | |
05b595e9 | 8574 | * @external: indicates if the port is for an external controller |
e41b6bf3 | 8575 | */ |
3a2d9588 | 8576 | void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller, |
05b595e9 | 8577 | u16 pf, u16 vf, bool external) |
e41b6bf3 PP |
8578 | { |
8579 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
8580 | int ret; | |
8581 | ||
9f73bd1c PP |
8582 | if (WARN_ON(devlink_port->registered)) |
8583 | return; | |
e41b6bf3 | 8584 | ret = __devlink_port_attrs_set(devlink_port, |
71ad8d55 | 8585 | DEVLINK_PORT_FLAVOUR_PCI_VF); |
e41b6bf3 PP |
8586 | if (ret) |
8587 | return; | |
3a2d9588 | 8588 | attrs->pci_vf.controller = controller; |
e41b6bf3 PP |
8589 | attrs->pci_vf.pf = pf; |
8590 | attrs->pci_vf.vf = vf; | |
05b595e9 | 8591 | attrs->pci_vf.external = external; |
e41b6bf3 PP |
8592 | } |
8593 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set); | |
8594 | ||
b8288837 PP |
8595 | /** |
8596 | * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes | |
8597 | * | |
8598 | * @devlink_port: devlink port | |
8599 | * @controller: associated controller number for the devlink port instance | |
8600 | * @pf: associated PF for the devlink port instance | |
8601 | * @sf: associated SF of a PF for the devlink port instance | |
a1ab3e45 | 8602 | * @external: indicates if the port is for an external controller |
b8288837 PP |
8603 | */ |
8604 | void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller, | |
a1ab3e45 | 8605 | u16 pf, u32 sf, bool external) |
b8288837 PP |
8606 | { |
8607 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
8608 | int ret; | |
8609 | ||
8610 | if (WARN_ON(devlink_port->registered)) | |
8611 | return; | |
8612 | ret = __devlink_port_attrs_set(devlink_port, | |
8613 | DEVLINK_PORT_FLAVOUR_PCI_SF); | |
8614 | if (ret) | |
8615 | return; | |
8616 | attrs->pci_sf.controller = controller; | |
8617 | attrs->pci_sf.pf = pf; | |
8618 | attrs->pci_sf.sf = sf; | |
a1ab3e45 | 8619 | attrs->pci_sf.external = external; |
b8288837 PP |
8620 | } |
8621 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set); | |
8622 | ||
af3836df JP |
8623 | static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port, |
8624 | char *name, size_t len) | |
08474c1a JP |
8625 | { |
8626 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
8627 | int n = 0; | |
8628 | ||
10a429ba | 8629 | if (!devlink_port->attrs_set) |
08474c1a JP |
8630 | return -EOPNOTSUPP; |
8631 | ||
8632 | switch (attrs->flavour) { | |
8633 | case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
acf1ee44 | 8634 | case DEVLINK_PORT_FLAVOUR_VIRTUAL: |
08474c1a | 8635 | if (!attrs->split) |
378ef01b | 8636 | n = snprintf(name, len, "p%u", attrs->phys.port_number); |
08474c1a | 8637 | else |
378ef01b PP |
8638 | n = snprintf(name, len, "p%us%u", |
8639 | attrs->phys.port_number, | |
8640 | attrs->phys.split_subport_number); | |
08474c1a JP |
8641 | break; |
8642 | case DEVLINK_PORT_FLAVOUR_CPU: | |
8643 | case DEVLINK_PORT_FLAVOUR_DSA: | |
cf116634 | 8644 | case DEVLINK_PORT_FLAVOUR_UNUSED: |
08474c1a JP |
8645 | /* As CPU and DSA ports do not have a netdevice associated |
8646 | * case should not ever happen. | |
8647 | */ | |
8648 | WARN_ON(1); | |
8649 | return -EINVAL; | |
98fd2d65 | 8650 | case DEVLINK_PORT_FLAVOUR_PCI_PF: |
66b17082 PP |
8651 | if (attrs->pci_pf.external) { |
8652 | n = snprintf(name, len, "c%u", attrs->pci_pf.controller); | |
8653 | if (n >= len) | |
8654 | return -EINVAL; | |
8655 | len -= n; | |
8656 | name += n; | |
8657 | } | |
98fd2d65 PP |
8658 | n = snprintf(name, len, "pf%u", attrs->pci_pf.pf); |
8659 | break; | |
e41b6bf3 | 8660 | case DEVLINK_PORT_FLAVOUR_PCI_VF: |
66b17082 PP |
8661 | if (attrs->pci_vf.external) { |
8662 | n = snprintf(name, len, "c%u", attrs->pci_vf.controller); | |
8663 | if (n >= len) | |
8664 | return -EINVAL; | |
8665 | len -= n; | |
8666 | name += n; | |
8667 | } | |
e41b6bf3 PP |
8668 | n = snprintf(name, len, "pf%uvf%u", |
8669 | attrs->pci_vf.pf, attrs->pci_vf.vf); | |
8670 | break; | |
b8288837 | 8671 | case DEVLINK_PORT_FLAVOUR_PCI_SF: |
a1ab3e45 PP |
8672 | if (attrs->pci_sf.external) { |
8673 | n = snprintf(name, len, "c%u", attrs->pci_sf.controller); | |
8674 | if (n >= len) | |
8675 | return -EINVAL; | |
8676 | len -= n; | |
8677 | name += n; | |
8678 | } | |
b8288837 PP |
8679 | n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf, |
8680 | attrs->pci_sf.sf); | |
8681 | break; | |
08474c1a JP |
8682 | } |
8683 | ||
8684 | if (n >= len) | |
8685 | return -EINVAL; | |
8686 | ||
8687 | return 0; | |
8688 | } | |
af3836df | 8689 | |
bf797471 JP |
8690 | int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, |
8691 | u32 size, u16 ingress_pools_count, | |
8692 | u16 egress_pools_count, u16 ingress_tc_count, | |
8693 | u16 egress_tc_count) | |
8694 | { | |
8695 | struct devlink_sb *devlink_sb; | |
8696 | int err = 0; | |
8697 | ||
2406e7e5 | 8698 | mutex_lock(&devlink->lock); |
bf797471 JP |
8699 | if (devlink_sb_index_exists(devlink, sb_index)) { |
8700 | err = -EEXIST; | |
8701 | goto unlock; | |
8702 | } | |
8703 | ||
8704 | devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL); | |
8705 | if (!devlink_sb) { | |
8706 | err = -ENOMEM; | |
8707 | goto unlock; | |
8708 | } | |
8709 | devlink_sb->index = sb_index; | |
8710 | devlink_sb->size = size; | |
8711 | devlink_sb->ingress_pools_count = ingress_pools_count; | |
8712 | devlink_sb->egress_pools_count = egress_pools_count; | |
8713 | devlink_sb->ingress_tc_count = ingress_tc_count; | |
8714 | devlink_sb->egress_tc_count = egress_tc_count; | |
8715 | list_add_tail(&devlink_sb->list, &devlink->sb_list); | |
8716 | unlock: | |
2406e7e5 | 8717 | mutex_unlock(&devlink->lock); |
bf797471 JP |
8718 | return err; |
8719 | } | |
8720 | EXPORT_SYMBOL_GPL(devlink_sb_register); | |
8721 | ||
8722 | void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index) | |
8723 | { | |
8724 | struct devlink_sb *devlink_sb; | |
8725 | ||
2406e7e5 | 8726 | mutex_lock(&devlink->lock); |
bf797471 JP |
8727 | devlink_sb = devlink_sb_get_by_index(devlink, sb_index); |
8728 | WARN_ON(!devlink_sb); | |
8729 | list_del(&devlink_sb->list); | |
2406e7e5 | 8730 | mutex_unlock(&devlink->lock); |
bf797471 JP |
8731 | kfree(devlink_sb); |
8732 | } | |
8733 | EXPORT_SYMBOL_GPL(devlink_sb_unregister); | |
8734 | ||
1555d204 AS |
8735 | /** |
8736 | * devlink_dpipe_headers_register - register dpipe headers | |
8737 | * | |
8738 | * @devlink: devlink | |
8739 | * @dpipe_headers: dpipe header array | |
8740 | * | |
8741 | * Register the headers supported by hardware. | |
8742 | */ | |
8743 | int devlink_dpipe_headers_register(struct devlink *devlink, | |
8744 | struct devlink_dpipe_headers *dpipe_headers) | |
8745 | { | |
2406e7e5 | 8746 | mutex_lock(&devlink->lock); |
1555d204 | 8747 | devlink->dpipe_headers = dpipe_headers; |
2406e7e5 | 8748 | mutex_unlock(&devlink->lock); |
1555d204 AS |
8749 | return 0; |
8750 | } | |
8751 | EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register); | |
8752 | ||
8753 | /** | |
8754 | * devlink_dpipe_headers_unregister - unregister dpipe headers | |
8755 | * | |
8756 | * @devlink: devlink | |
8757 | * | |
8758 | * Unregister the headers supported by hardware. | |
8759 | */ | |
8760 | void devlink_dpipe_headers_unregister(struct devlink *devlink) | |
8761 | { | |
2406e7e5 | 8762 | mutex_lock(&devlink->lock); |
1555d204 | 8763 | devlink->dpipe_headers = NULL; |
2406e7e5 | 8764 | mutex_unlock(&devlink->lock); |
1555d204 AS |
8765 | } |
8766 | EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister); | |
8767 | ||
8768 | /** | |
8769 | * devlink_dpipe_table_counter_enabled - check if counter allocation | |
8770 | * required | |
8771 | * @devlink: devlink | |
8772 | * @table_name: tables name | |
8773 | * | |
8774 | * Used by driver to check if counter allocation is required. | |
8775 | * After counter allocation is turned on the table entries | |
8776 | * are updated to include counter statistics. | |
8777 | * | |
8778 | * After that point on the driver must respect the counter | |
8779 | * state so that each entry added to the table is added | |
8780 | * with a counter. | |
8781 | */ | |
8782 | bool devlink_dpipe_table_counter_enabled(struct devlink *devlink, | |
8783 | const char *table_name) | |
8784 | { | |
8785 | struct devlink_dpipe_table *table; | |
8786 | bool enabled; | |
8787 | ||
8788 | rcu_read_lock(); | |
8789 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 8790 | table_name, devlink); |
1555d204 AS |
8791 | enabled = false; |
8792 | if (table) | |
8793 | enabled = table->counters_enabled; | |
8794 | rcu_read_unlock(); | |
8795 | return enabled; | |
8796 | } | |
8797 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled); | |
8798 | ||
8799 | /** | |
8800 | * devlink_dpipe_table_register - register dpipe table | |
8801 | * | |
8802 | * @devlink: devlink | |
8803 | * @table_name: table name | |
8804 | * @table_ops: table ops | |
8805 | * @priv: priv | |
1555d204 AS |
8806 | * @counter_control_extern: external control for counters |
8807 | */ | |
8808 | int devlink_dpipe_table_register(struct devlink *devlink, | |
8809 | const char *table_name, | |
8810 | struct devlink_dpipe_table_ops *table_ops, | |
ffd3cdcc | 8811 | void *priv, bool counter_control_extern) |
1555d204 AS |
8812 | { |
8813 | struct devlink_dpipe_table *table; | |
6132c1d9 | 8814 | int err = 0; |
1555d204 | 8815 | |
ffd3cdcc AS |
8816 | if (WARN_ON(!table_ops->size_get)) |
8817 | return -EINVAL; | |
8818 | ||
6132c1d9 MB |
8819 | mutex_lock(&devlink->lock); |
8820 | ||
2eb51c75 MB |
8821 | if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name, |
8822 | devlink)) { | |
6132c1d9 MB |
8823 | err = -EEXIST; |
8824 | goto unlock; | |
8825 | } | |
8826 | ||
1555d204 | 8827 | table = kzalloc(sizeof(*table), GFP_KERNEL); |
6132c1d9 MB |
8828 | if (!table) { |
8829 | err = -ENOMEM; | |
8830 | goto unlock; | |
8831 | } | |
1555d204 AS |
8832 | |
8833 | table->name = table_name; | |
8834 | table->table_ops = table_ops; | |
8835 | table->priv = priv; | |
1555d204 AS |
8836 | table->counter_control_extern = counter_control_extern; |
8837 | ||
1555d204 | 8838 | list_add_tail_rcu(&table->list, &devlink->dpipe_table_list); |
6132c1d9 | 8839 | unlock: |
2406e7e5 | 8840 | mutex_unlock(&devlink->lock); |
6132c1d9 | 8841 | return err; |
1555d204 AS |
8842 | } |
8843 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_register); | |
8844 | ||
8845 | /** | |
8846 | * devlink_dpipe_table_unregister - unregister dpipe table | |
8847 | * | |
8848 | * @devlink: devlink | |
8849 | * @table_name: table name | |
8850 | */ | |
8851 | void devlink_dpipe_table_unregister(struct devlink *devlink, | |
8852 | const char *table_name) | |
8853 | { | |
8854 | struct devlink_dpipe_table *table; | |
8855 | ||
2406e7e5 | 8856 | mutex_lock(&devlink->lock); |
1555d204 | 8857 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, |
2eb51c75 | 8858 | table_name, devlink); |
1555d204 AS |
8859 | if (!table) |
8860 | goto unlock; | |
8861 | list_del_rcu(&table->list); | |
2406e7e5 | 8862 | mutex_unlock(&devlink->lock); |
1555d204 AS |
8863 | kfree_rcu(table, rcu); |
8864 | return; | |
8865 | unlock: | |
2406e7e5 | 8866 | mutex_unlock(&devlink->lock); |
1555d204 AS |
8867 | } |
8868 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister); | |
8869 | ||
d9f9b9a4 AS |
8870 | /** |
8871 | * devlink_resource_register - devlink resource register | |
8872 | * | |
8873 | * @devlink: devlink | |
8874 | * @resource_name: resource's name | |
d9f9b9a4 AS |
8875 | * @resource_size: resource's size |
8876 | * @resource_id: resource's id | |
eeaadd82 JK |
8877 | * @parent_resource_id: resource's parent id |
8878 | * @size_params: size parameters | |
321f7ab0 DR |
8879 | * |
8880 | * Generic resources should reuse the same names across drivers. | |
8881 | * Please see the generic resources list at: | |
8882 | * Documentation/networking/devlink/devlink-resource.rst | |
d9f9b9a4 AS |
8883 | */ |
8884 | int devlink_resource_register(struct devlink *devlink, | |
8885 | const char *resource_name, | |
d9f9b9a4 AS |
8886 | u64 resource_size, |
8887 | u64 resource_id, | |
8888 | u64 parent_resource_id, | |
fc56be47 | 8889 | const struct devlink_resource_size_params *size_params) |
d9f9b9a4 AS |
8890 | { |
8891 | struct devlink_resource *resource; | |
8892 | struct list_head *resource_list; | |
14530746 | 8893 | bool top_hierarchy; |
d9f9b9a4 AS |
8894 | int err = 0; |
8895 | ||
14530746 DA |
8896 | top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP; |
8897 | ||
d9f9b9a4 AS |
8898 | mutex_lock(&devlink->lock); |
8899 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8900 | if (resource) { | |
8901 | err = -EINVAL; | |
8902 | goto out; | |
8903 | } | |
8904 | ||
8905 | resource = kzalloc(sizeof(*resource), GFP_KERNEL); | |
8906 | if (!resource) { | |
8907 | err = -ENOMEM; | |
8908 | goto out; | |
8909 | } | |
8910 | ||
8911 | if (top_hierarchy) { | |
8912 | resource_list = &devlink->resource_list; | |
8913 | } else { | |
8914 | struct devlink_resource *parent_resource; | |
8915 | ||
8916 | parent_resource = devlink_resource_find(devlink, NULL, | |
8917 | parent_resource_id); | |
8918 | if (parent_resource) { | |
8919 | resource_list = &parent_resource->resource_list; | |
8920 | resource->parent = parent_resource; | |
8921 | } else { | |
b75703de | 8922 | kfree(resource); |
d9f9b9a4 AS |
8923 | err = -EINVAL; |
8924 | goto out; | |
8925 | } | |
8926 | } | |
8927 | ||
8928 | resource->name = resource_name; | |
8929 | resource->size = resource_size; | |
8930 | resource->size_new = resource_size; | |
8931 | resource->id = resource_id; | |
d9f9b9a4 | 8932 | resource->size_valid = true; |
77d27096 JP |
8933 | memcpy(&resource->size_params, size_params, |
8934 | sizeof(resource->size_params)); | |
d9f9b9a4 AS |
8935 | INIT_LIST_HEAD(&resource->resource_list); |
8936 | list_add_tail(&resource->list, resource_list); | |
8937 | out: | |
8938 | mutex_unlock(&devlink->lock); | |
8939 | return err; | |
8940 | } | |
8941 | EXPORT_SYMBOL_GPL(devlink_resource_register); | |
8942 | ||
8943 | /** | |
8944 | * devlink_resources_unregister - free all resources | |
8945 | * | |
8946 | * @devlink: devlink | |
8947 | * @resource: resource | |
8948 | */ | |
8949 | void devlink_resources_unregister(struct devlink *devlink, | |
8950 | struct devlink_resource *resource) | |
8951 | { | |
8952 | struct devlink_resource *tmp, *child_resource; | |
8953 | struct list_head *resource_list; | |
8954 | ||
8955 | if (resource) | |
8956 | resource_list = &resource->resource_list; | |
8957 | else | |
8958 | resource_list = &devlink->resource_list; | |
8959 | ||
8960 | if (!resource) | |
8961 | mutex_lock(&devlink->lock); | |
8962 | ||
8963 | list_for_each_entry_safe(child_resource, tmp, resource_list, list) { | |
8964 | devlink_resources_unregister(devlink, child_resource); | |
8965 | list_del(&child_resource->list); | |
8966 | kfree(child_resource); | |
8967 | } | |
8968 | ||
8969 | if (!resource) | |
8970 | mutex_unlock(&devlink->lock); | |
8971 | } | |
8972 | EXPORT_SYMBOL_GPL(devlink_resources_unregister); | |
8973 | ||
8974 | /** | |
8975 | * devlink_resource_size_get - get and update size | |
8976 | * | |
8977 | * @devlink: devlink | |
8978 | * @resource_id: the requested resource id | |
8979 | * @p_resource_size: ptr to update | |
8980 | */ | |
8981 | int devlink_resource_size_get(struct devlink *devlink, | |
8982 | u64 resource_id, | |
8983 | u64 *p_resource_size) | |
8984 | { | |
8985 | struct devlink_resource *resource; | |
8986 | int err = 0; | |
8987 | ||
8988 | mutex_lock(&devlink->lock); | |
8989 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8990 | if (!resource) { | |
8991 | err = -EINVAL; | |
8992 | goto out; | |
8993 | } | |
8994 | *p_resource_size = resource->size_new; | |
8995 | resource->size = resource->size_new; | |
8996 | out: | |
8997 | mutex_unlock(&devlink->lock); | |
8998 | return err; | |
8999 | } | |
9000 | EXPORT_SYMBOL_GPL(devlink_resource_size_get); | |
9001 | ||
56dc7cd0 AS |
9002 | /** |
9003 | * devlink_dpipe_table_resource_set - set the resource id | |
9004 | * | |
9005 | * @devlink: devlink | |
9006 | * @table_name: table name | |
9007 | * @resource_id: resource id | |
9008 | * @resource_units: number of resource's units consumed per table's entry | |
9009 | */ | |
9010 | int devlink_dpipe_table_resource_set(struct devlink *devlink, | |
9011 | const char *table_name, u64 resource_id, | |
9012 | u64 resource_units) | |
9013 | { | |
9014 | struct devlink_dpipe_table *table; | |
9015 | int err = 0; | |
9016 | ||
9017 | mutex_lock(&devlink->lock); | |
9018 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 9019 | table_name, devlink); |
56dc7cd0 AS |
9020 | if (!table) { |
9021 | err = -EINVAL; | |
9022 | goto out; | |
9023 | } | |
9024 | table->resource_id = resource_id; | |
9025 | table->resource_units = resource_units; | |
9026 | table->resource_valid = true; | |
9027 | out: | |
9028 | mutex_unlock(&devlink->lock); | |
9029 | return err; | |
9030 | } | |
9031 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set); | |
9032 | ||
fc56be47 JP |
9033 | /** |
9034 | * devlink_resource_occ_get_register - register occupancy getter | |
9035 | * | |
9036 | * @devlink: devlink | |
9037 | * @resource_id: resource id | |
9038 | * @occ_get: occupancy getter callback | |
9039 | * @occ_get_priv: occupancy getter callback priv | |
9040 | */ | |
9041 | void devlink_resource_occ_get_register(struct devlink *devlink, | |
9042 | u64 resource_id, | |
9043 | devlink_resource_occ_get_t *occ_get, | |
9044 | void *occ_get_priv) | |
9045 | { | |
9046 | struct devlink_resource *resource; | |
9047 | ||
9048 | mutex_lock(&devlink->lock); | |
9049 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
9050 | if (WARN_ON(!resource)) | |
9051 | goto out; | |
9052 | WARN_ON(resource->occ_get); | |
9053 | ||
9054 | resource->occ_get = occ_get; | |
9055 | resource->occ_get_priv = occ_get_priv; | |
9056 | out: | |
9057 | mutex_unlock(&devlink->lock); | |
9058 | } | |
9059 | EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register); | |
9060 | ||
9061 | /** | |
9062 | * devlink_resource_occ_get_unregister - unregister occupancy getter | |
9063 | * | |
9064 | * @devlink: devlink | |
9065 | * @resource_id: resource id | |
9066 | */ | |
9067 | void devlink_resource_occ_get_unregister(struct devlink *devlink, | |
9068 | u64 resource_id) | |
9069 | { | |
9070 | struct devlink_resource *resource; | |
9071 | ||
9072 | mutex_lock(&devlink->lock); | |
9073 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
9074 | if (WARN_ON(!resource)) | |
9075 | goto out; | |
9076 | WARN_ON(!resource->occ_get); | |
9077 | ||
9078 | resource->occ_get = NULL; | |
9079 | resource->occ_get_priv = NULL; | |
9080 | out: | |
9081 | mutex_unlock(&devlink->lock); | |
9082 | } | |
9083 | EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister); | |
9084 | ||
39e6160e VV |
9085 | static int devlink_param_verify(const struct devlink_param *param) |
9086 | { | |
9087 | if (!param || !param->name || !param->supported_cmodes) | |
9088 | return -EINVAL; | |
9089 | if (param->generic) | |
9090 | return devlink_param_generic_verify(param); | |
9091 | else | |
9092 | return devlink_param_driver_verify(param); | |
9093 | } | |
9094 | ||
9095 | static int __devlink_params_register(struct devlink *devlink, | |
c1e5786d | 9096 | unsigned int port_index, |
39e6160e VV |
9097 | struct list_head *param_list, |
9098 | const struct devlink_param *params, | |
c1e5786d VV |
9099 | size_t params_count, |
9100 | enum devlink_command reg_cmd, | |
9101 | enum devlink_command unreg_cmd) | |
eabaef18 MS |
9102 | { |
9103 | const struct devlink_param *param = params; | |
9104 | int i; | |
9105 | int err; | |
9106 | ||
9107 | mutex_lock(&devlink->lock); | |
9108 | for (i = 0; i < params_count; i++, param++) { | |
39e6160e VV |
9109 | err = devlink_param_verify(param); |
9110 | if (err) | |
eabaef18 | 9111 | goto rollback; |
39e6160e | 9112 | |
c1e5786d VV |
9113 | err = devlink_param_register_one(devlink, port_index, |
9114 | param_list, param, reg_cmd); | |
eabaef18 MS |
9115 | if (err) |
9116 | goto rollback; | |
9117 | } | |
9118 | ||
9119 | mutex_unlock(&devlink->lock); | |
9120 | return 0; | |
9121 | ||
9122 | rollback: | |
9123 | if (!i) | |
9124 | goto unlock; | |
9125 | for (param--; i > 0; i--, param--) | |
c1e5786d VV |
9126 | devlink_param_unregister_one(devlink, port_index, param_list, |
9127 | param, unreg_cmd); | |
eabaef18 MS |
9128 | unlock: |
9129 | mutex_unlock(&devlink->lock); | |
9130 | return err; | |
9131 | } | |
39e6160e VV |
9132 | |
9133 | static void __devlink_params_unregister(struct devlink *devlink, | |
c1e5786d | 9134 | unsigned int port_index, |
39e6160e VV |
9135 | struct list_head *param_list, |
9136 | const struct devlink_param *params, | |
c1e5786d VV |
9137 | size_t params_count, |
9138 | enum devlink_command cmd) | |
39e6160e VV |
9139 | { |
9140 | const struct devlink_param *param = params; | |
9141 | int i; | |
9142 | ||
9143 | mutex_lock(&devlink->lock); | |
9144 | for (i = 0; i < params_count; i++, param++) | |
c1e5786d VV |
9145 | devlink_param_unregister_one(devlink, 0, param_list, param, |
9146 | cmd); | |
39e6160e VV |
9147 | mutex_unlock(&devlink->lock); |
9148 | } | |
9149 | ||
9150 | /** | |
9151 | * devlink_params_register - register configuration parameters | |
9152 | * | |
9153 | * @devlink: devlink | |
9154 | * @params: configuration parameters array | |
9155 | * @params_count: number of parameters provided | |
9156 | * | |
9157 | * Register the configuration parameters supported by the driver. | |
9158 | */ | |
9159 | int devlink_params_register(struct devlink *devlink, | |
9160 | const struct devlink_param *params, | |
9161 | size_t params_count) | |
9162 | { | |
c1e5786d VV |
9163 | return __devlink_params_register(devlink, 0, &devlink->param_list, |
9164 | params, params_count, | |
9165 | DEVLINK_CMD_PARAM_NEW, | |
9166 | DEVLINK_CMD_PARAM_DEL); | |
39e6160e | 9167 | } |
eabaef18 MS |
9168 | EXPORT_SYMBOL_GPL(devlink_params_register); |
9169 | ||
9170 | /** | |
9171 | * devlink_params_unregister - unregister configuration parameters | |
9172 | * @devlink: devlink | |
9173 | * @params: configuration parameters to unregister | |
9174 | * @params_count: number of parameters provided | |
9175 | */ | |
9176 | void devlink_params_unregister(struct devlink *devlink, | |
9177 | const struct devlink_param *params, | |
9178 | size_t params_count) | |
9179 | { | |
c1e5786d VV |
9180 | return __devlink_params_unregister(devlink, 0, &devlink->param_list, |
9181 | params, params_count, | |
9182 | DEVLINK_CMD_PARAM_DEL); | |
eabaef18 MS |
9183 | } |
9184 | EXPORT_SYMBOL_GPL(devlink_params_unregister); | |
9185 | ||
7c62cfb8 JP |
9186 | /** |
9187 | * devlink_params_publish - publish configuration parameters | |
9188 | * | |
9189 | * @devlink: devlink | |
9190 | * | |
9191 | * Publish previously registered configuration parameters. | |
9192 | */ | |
9193 | void devlink_params_publish(struct devlink *devlink) | |
9194 | { | |
9195 | struct devlink_param_item *param_item; | |
9196 | ||
9197 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
9198 | if (param_item->published) | |
9199 | continue; | |
9200 | param_item->published = true; | |
9201 | devlink_param_notify(devlink, 0, param_item, | |
9202 | DEVLINK_CMD_PARAM_NEW); | |
9203 | } | |
9204 | } | |
9205 | EXPORT_SYMBOL_GPL(devlink_params_publish); | |
9206 | ||
9207 | /** | |
9208 | * devlink_params_unpublish - unpublish configuration parameters | |
9209 | * | |
9210 | * @devlink: devlink | |
9211 | * | |
9212 | * Unpublish previously registered configuration parameters. | |
9213 | */ | |
9214 | void devlink_params_unpublish(struct devlink *devlink) | |
9215 | { | |
9216 | struct devlink_param_item *param_item; | |
9217 | ||
9218 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
9219 | if (!param_item->published) | |
9220 | continue; | |
9221 | param_item->published = false; | |
9222 | devlink_param_notify(devlink, 0, param_item, | |
9223 | DEVLINK_CMD_PARAM_DEL); | |
9224 | } | |
9225 | } | |
9226 | EXPORT_SYMBOL_GPL(devlink_params_unpublish); | |
9227 | ||
39e6160e VV |
9228 | /** |
9229 | * devlink_port_params_register - register port configuration parameters | |
9230 | * | |
9231 | * @devlink_port: devlink port | |
9232 | * @params: configuration parameters array | |
9233 | * @params_count: number of parameters provided | |
9234 | * | |
9235 | * Register the configuration parameters supported by the port. | |
9236 | */ | |
9237 | int devlink_port_params_register(struct devlink_port *devlink_port, | |
9238 | const struct devlink_param *params, | |
9239 | size_t params_count) | |
9240 | { | |
9241 | return __devlink_params_register(devlink_port->devlink, | |
c1e5786d | 9242 | devlink_port->index, |
39e6160e | 9243 | &devlink_port->param_list, params, |
c1e5786d VV |
9244 | params_count, |
9245 | DEVLINK_CMD_PORT_PARAM_NEW, | |
9246 | DEVLINK_CMD_PORT_PARAM_DEL); | |
39e6160e VV |
9247 | } |
9248 | EXPORT_SYMBOL_GPL(devlink_port_params_register); | |
9249 | ||
9250 | /** | |
9251 | * devlink_port_params_unregister - unregister port configuration | |
9252 | * parameters | |
9253 | * | |
9254 | * @devlink_port: devlink port | |
9255 | * @params: configuration parameters array | |
9256 | * @params_count: number of parameters provided | |
9257 | */ | |
9258 | void devlink_port_params_unregister(struct devlink_port *devlink_port, | |
9259 | const struct devlink_param *params, | |
9260 | size_t params_count) | |
9261 | { | |
9262 | return __devlink_params_unregister(devlink_port->devlink, | |
c1e5786d | 9263 | devlink_port->index, |
39e6160e | 9264 | &devlink_port->param_list, |
c1e5786d VV |
9265 | params, params_count, |
9266 | DEVLINK_CMD_PORT_PARAM_DEL); | |
39e6160e VV |
9267 | } |
9268 | EXPORT_SYMBOL_GPL(devlink_port_params_unregister); | |
9269 | ||
ffd19b9a VV |
9270 | static int |
9271 | __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id, | |
9272 | union devlink_param_value *init_val) | |
ec01aeb1 MS |
9273 | { |
9274 | struct devlink_param_item *param_item; | |
9275 | ||
ffd19b9a | 9276 | param_item = devlink_param_find_by_id(param_list, param_id); |
ec01aeb1 MS |
9277 | if (!param_item) |
9278 | return -EINVAL; | |
9279 | ||
9280 | if (!param_item->driverinit_value_valid || | |
9281 | !devlink_param_cmode_is_supported(param_item->param, | |
9282 | DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
9283 | return -EOPNOTSUPP; | |
9284 | ||
1276534c MS |
9285 | if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) |
9286 | strcpy(init_val->vstr, param_item->driverinit_value.vstr); | |
9287 | else | |
9288 | *init_val = param_item->driverinit_value; | |
ec01aeb1 MS |
9289 | |
9290 | return 0; | |
9291 | } | |
ffd19b9a | 9292 | |
5473a7bd VV |
9293 | static int |
9294 | __devlink_param_driverinit_value_set(struct devlink *devlink, | |
c1e5786d | 9295 | unsigned int port_index, |
5473a7bd VV |
9296 | struct list_head *param_list, u32 param_id, |
9297 | union devlink_param_value init_val, | |
9298 | enum devlink_command cmd) | |
9299 | { | |
9300 | struct devlink_param_item *param_item; | |
9301 | ||
9302 | param_item = devlink_param_find_by_id(param_list, param_id); | |
9303 | if (!param_item) | |
9304 | return -EINVAL; | |
9305 | ||
9306 | if (!devlink_param_cmode_is_supported(param_item->param, | |
9307 | DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
9308 | return -EOPNOTSUPP; | |
9309 | ||
9310 | if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) | |
9311 | strcpy(param_item->driverinit_value.vstr, init_val.vstr); | |
9312 | else | |
9313 | param_item->driverinit_value = init_val; | |
9314 | param_item->driverinit_value_valid = true; | |
9315 | ||
c1e5786d | 9316 | devlink_param_notify(devlink, port_index, param_item, cmd); |
5473a7bd VV |
9317 | return 0; |
9318 | } | |
9319 | ||
ffd19b9a VV |
9320 | /** |
9321 | * devlink_param_driverinit_value_get - get configuration parameter | |
9322 | * value for driver initializing | |
9323 | * | |
9324 | * @devlink: devlink | |
9325 | * @param_id: parameter ID | |
9326 | * @init_val: value of parameter in driverinit configuration mode | |
9327 | * | |
9328 | * This function should be used by the driver to get driverinit | |
9329 | * configuration for initialization after reload command. | |
9330 | */ | |
9331 | int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id, | |
9332 | union devlink_param_value *init_val) | |
9333 | { | |
69d56e0e | 9334 | if (!devlink_reload_supported(devlink->ops)) |
ffd19b9a VV |
9335 | return -EOPNOTSUPP; |
9336 | ||
9337 | return __devlink_param_driverinit_value_get(&devlink->param_list, | |
9338 | param_id, init_val); | |
9339 | } | |
ec01aeb1 MS |
9340 | EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get); |
9341 | ||
9342 | /** | |
9343 | * devlink_param_driverinit_value_set - set value of configuration | |
9344 | * parameter for driverinit | |
9345 | * configuration mode | |
9346 | * | |
9347 | * @devlink: devlink | |
9348 | * @param_id: parameter ID | |
9349 | * @init_val: value of parameter to set for driverinit configuration mode | |
9350 | * | |
9351 | * This function should be used by the driver to set driverinit | |
9352 | * configuration mode default value. | |
9353 | */ | |
9354 | int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id, | |
9355 | union devlink_param_value init_val) | |
9356 | { | |
c1e5786d | 9357 | return __devlink_param_driverinit_value_set(devlink, 0, |
5473a7bd VV |
9358 | &devlink->param_list, |
9359 | param_id, init_val, | |
9360 | DEVLINK_CMD_PARAM_NEW); | |
ec01aeb1 MS |
9361 | } |
9362 | EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set); | |
9363 | ||
ffd19b9a VV |
9364 | /** |
9365 | * devlink_port_param_driverinit_value_get - get configuration parameter | |
9366 | * value for driver initializing | |
9367 | * | |
9368 | * @devlink_port: devlink_port | |
9369 | * @param_id: parameter ID | |
9370 | * @init_val: value of parameter in driverinit configuration mode | |
9371 | * | |
9372 | * This function should be used by the driver to get driverinit | |
9373 | * configuration for initialization after reload command. | |
9374 | */ | |
9375 | int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port, | |
9376 | u32 param_id, | |
9377 | union devlink_param_value *init_val) | |
9378 | { | |
9379 | struct devlink *devlink = devlink_port->devlink; | |
9380 | ||
69d56e0e | 9381 | if (!devlink_reload_supported(devlink->ops)) |
ffd19b9a VV |
9382 | return -EOPNOTSUPP; |
9383 | ||
9384 | return __devlink_param_driverinit_value_get(&devlink_port->param_list, | |
9385 | param_id, init_val); | |
9386 | } | |
9387 | EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get); | |
9388 | ||
5473a7bd VV |
9389 | /** |
9390 | * devlink_port_param_driverinit_value_set - set value of configuration | |
9391 | * parameter for driverinit | |
9392 | * configuration mode | |
9393 | * | |
9394 | * @devlink_port: devlink_port | |
9395 | * @param_id: parameter ID | |
9396 | * @init_val: value of parameter to set for driverinit configuration mode | |
9397 | * | |
9398 | * This function should be used by the driver to set driverinit | |
9399 | * configuration mode default value. | |
9400 | */ | |
9401 | int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port, | |
9402 | u32 param_id, | |
9403 | union devlink_param_value init_val) | |
9404 | { | |
9405 | return __devlink_param_driverinit_value_set(devlink_port->devlink, | |
c1e5786d | 9406 | devlink_port->index, |
5473a7bd | 9407 | &devlink_port->param_list, |
c1e5786d VV |
9408 | param_id, init_val, |
9409 | DEVLINK_CMD_PORT_PARAM_NEW); | |
5473a7bd VV |
9410 | } |
9411 | EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set); | |
9412 | ||
ea601e17 MS |
9413 | /** |
9414 | * devlink_param_value_changed - notify devlink on a parameter's value | |
9415 | * change. Should be called by the driver | |
9416 | * right after the change. | |
9417 | * | |
9418 | * @devlink: devlink | |
9419 | * @param_id: parameter ID | |
9420 | * | |
9421 | * This function should be used by the driver to notify devlink on value | |
9422 | * change, excluding driverinit configuration mode. | |
9423 | * For driverinit configuration mode driver should use the function | |
ea601e17 MS |
9424 | */ |
9425 | void devlink_param_value_changed(struct devlink *devlink, u32 param_id) | |
9426 | { | |
9427 | struct devlink_param_item *param_item; | |
9428 | ||
9429 | param_item = devlink_param_find_by_id(&devlink->param_list, param_id); | |
9430 | WARN_ON(!param_item); | |
9431 | ||
c1e5786d | 9432 | devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW); |
ea601e17 MS |
9433 | } |
9434 | EXPORT_SYMBOL_GPL(devlink_param_value_changed); | |
9435 | ||
c1e5786d VV |
9436 | /** |
9437 | * devlink_port_param_value_changed - notify devlink on a parameter's value | |
9438 | * change. Should be called by the driver | |
9439 | * right after the change. | |
9440 | * | |
9441 | * @devlink_port: devlink_port | |
9442 | * @param_id: parameter ID | |
9443 | * | |
9444 | * This function should be used by the driver to notify devlink on value | |
9445 | * change, excluding driverinit configuration mode. | |
9446 | * For driverinit configuration mode driver should use the function | |
9447 | * devlink_port_param_driverinit_value_set() instead. | |
9448 | */ | |
9449 | void devlink_port_param_value_changed(struct devlink_port *devlink_port, | |
9450 | u32 param_id) | |
9451 | { | |
9452 | struct devlink_param_item *param_item; | |
9453 | ||
9454 | param_item = devlink_param_find_by_id(&devlink_port->param_list, | |
9455 | param_id); | |
9456 | WARN_ON(!param_item); | |
9457 | ||
9458 | devlink_param_notify(devlink_port->devlink, devlink_port->index, | |
9459 | param_item, DEVLINK_CMD_PORT_PARAM_NEW); | |
9460 | } | |
9461 | EXPORT_SYMBOL_GPL(devlink_port_param_value_changed); | |
9462 | ||
bde74ad1 MS |
9463 | /** |
9464 | * devlink_param_value_str_fill - Safely fill-up the string preventing | |
9465 | * from overflow of the preallocated buffer | |
9466 | * | |
9467 | * @dst_val: destination devlink_param_value | |
9468 | * @src: source buffer | |
9469 | */ | |
9470 | void devlink_param_value_str_fill(union devlink_param_value *dst_val, | |
9471 | const char *src) | |
9472 | { | |
9473 | size_t len; | |
9474 | ||
9475 | len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE); | |
9476 | WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE); | |
9477 | } | |
9478 | EXPORT_SYMBOL_GPL(devlink_param_value_str_fill); | |
9479 | ||
b16ebe92 AV |
9480 | /** |
9481 | * devlink_region_create - create a new address region | |
9482 | * | |
9483 | * @devlink: devlink | |
e8937681 | 9484 | * @ops: region operations and name |
b16ebe92 AV |
9485 | * @region_max_snapshots: Maximum supported number of snapshots for region |
9486 | * @region_size: size of region | |
9487 | */ | |
e8937681 JK |
9488 | struct devlink_region * |
9489 | devlink_region_create(struct devlink *devlink, | |
9490 | const struct devlink_region_ops *ops, | |
9491 | u32 region_max_snapshots, u64 region_size) | |
b16ebe92 AV |
9492 | { |
9493 | struct devlink_region *region; | |
9494 | int err = 0; | |
9495 | ||
a0a09f6b JK |
9496 | if (WARN_ON(!ops) || WARN_ON(!ops->destructor)) |
9497 | return ERR_PTR(-EINVAL); | |
9498 | ||
b16ebe92 AV |
9499 | mutex_lock(&devlink->lock); |
9500 | ||
e8937681 | 9501 | if (devlink_region_get_by_name(devlink, ops->name)) { |
b16ebe92 AV |
9502 | err = -EEXIST; |
9503 | goto unlock; | |
9504 | } | |
9505 | ||
9506 | region = kzalloc(sizeof(*region), GFP_KERNEL); | |
9507 | if (!region) { | |
9508 | err = -ENOMEM; | |
9509 | goto unlock; | |
9510 | } | |
9511 | ||
9512 | region->devlink = devlink; | |
9513 | region->max_snapshots = region_max_snapshots; | |
e8937681 | 9514 | region->ops = ops; |
b16ebe92 AV |
9515 | region->size = region_size; |
9516 | INIT_LIST_HEAD(®ion->snapshot_list); | |
9517 | list_add_tail(®ion->list, &devlink->region_list); | |
866319bb | 9518 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); |
b16ebe92 AV |
9519 | |
9520 | mutex_unlock(&devlink->lock); | |
9521 | return region; | |
9522 | ||
9523 | unlock: | |
9524 | mutex_unlock(&devlink->lock); | |
9525 | return ERR_PTR(err); | |
9526 | } | |
9527 | EXPORT_SYMBOL_GPL(devlink_region_create); | |
9528 | ||
544e7c33 AL |
9529 | /** |
9530 | * devlink_port_region_create - create a new address region for a port | |
9531 | * | |
9532 | * @port: devlink port | |
9533 | * @ops: region operations and name | |
9534 | * @region_max_snapshots: Maximum supported number of snapshots for region | |
9535 | * @region_size: size of region | |
9536 | */ | |
9537 | struct devlink_region * | |
9538 | devlink_port_region_create(struct devlink_port *port, | |
9539 | const struct devlink_port_region_ops *ops, | |
9540 | u32 region_max_snapshots, u64 region_size) | |
9541 | { | |
9542 | struct devlink *devlink = port->devlink; | |
9543 | struct devlink_region *region; | |
9544 | int err = 0; | |
9545 | ||
9546 | if (WARN_ON(!ops) || WARN_ON(!ops->destructor)) | |
9547 | return ERR_PTR(-EINVAL); | |
9548 | ||
9549 | mutex_lock(&devlink->lock); | |
9550 | ||
9551 | if (devlink_port_region_get_by_name(port, ops->name)) { | |
9552 | err = -EEXIST; | |
9553 | goto unlock; | |
9554 | } | |
9555 | ||
9556 | region = kzalloc(sizeof(*region), GFP_KERNEL); | |
9557 | if (!region) { | |
9558 | err = -ENOMEM; | |
9559 | goto unlock; | |
9560 | } | |
9561 | ||
9562 | region->devlink = devlink; | |
9563 | region->port = port; | |
9564 | region->max_snapshots = region_max_snapshots; | |
9565 | region->port_ops = ops; | |
9566 | region->size = region_size; | |
9567 | INIT_LIST_HEAD(®ion->snapshot_list); | |
9568 | list_add_tail(®ion->list, &port->region_list); | |
9569 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); | |
9570 | ||
9571 | mutex_unlock(&devlink->lock); | |
9572 | return region; | |
9573 | ||
9574 | unlock: | |
9575 | mutex_unlock(&devlink->lock); | |
9576 | return ERR_PTR(err); | |
9577 | } | |
9578 | EXPORT_SYMBOL_GPL(devlink_port_region_create); | |
9579 | ||
b16ebe92 AV |
9580 | /** |
9581 | * devlink_region_destroy - destroy address region | |
9582 | * | |
9583 | * @region: devlink region to destroy | |
9584 | */ | |
9585 | void devlink_region_destroy(struct devlink_region *region) | |
9586 | { | |
9587 | struct devlink *devlink = region->devlink; | |
d7e52722 | 9588 | struct devlink_snapshot *snapshot, *ts; |
b16ebe92 AV |
9589 | |
9590 | mutex_lock(&devlink->lock); | |
d7e52722 AV |
9591 | |
9592 | /* Free all snapshots of region */ | |
9593 | list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list) | |
92b49822 | 9594 | devlink_region_snapshot_del(region, snapshot); |
d7e52722 | 9595 | |
b16ebe92 | 9596 | list_del(®ion->list); |
866319bb AV |
9597 | |
9598 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL); | |
b16ebe92 AV |
9599 | mutex_unlock(&devlink->lock); |
9600 | kfree(region); | |
9601 | } | |
9602 | EXPORT_SYMBOL_GPL(devlink_region_destroy); | |
9603 | ||
ccadfa44 | 9604 | /** |
b0efcae5 | 9605 | * devlink_region_snapshot_id_get - get snapshot ID |
ccadfa44 AV |
9606 | * |
9607 | * This callback should be called when adding a new snapshot, | |
9608 | * Driver should use the same id for multiple snapshots taken | |
9609 | * on multiple regions at the same time/by the same trigger. | |
9610 | * | |
12102436 JK |
9611 | * The caller of this function must use devlink_region_snapshot_id_put |
9612 | * when finished creating regions using this id. | |
9613 | * | |
7ef19d3b JK |
9614 | * Returns zero on success, or a negative error code on failure. |
9615 | * | |
ccadfa44 | 9616 | * @devlink: devlink |
7ef19d3b | 9617 | * @id: storage to return id |
ccadfa44 | 9618 | */ |
7ef19d3b | 9619 | int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) |
ccadfa44 | 9620 | { |
7ef19d3b | 9621 | int err; |
ccadfa44 AV |
9622 | |
9623 | mutex_lock(&devlink->lock); | |
7ef19d3b | 9624 | err = __devlink_region_snapshot_id_get(devlink, id); |
ccadfa44 AV |
9625 | mutex_unlock(&devlink->lock); |
9626 | ||
7ef19d3b | 9627 | return err; |
ccadfa44 | 9628 | } |
b0efcae5 | 9629 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get); |
ccadfa44 | 9630 | |
12102436 JK |
9631 | /** |
9632 | * devlink_region_snapshot_id_put - put snapshot ID reference | |
9633 | * | |
9634 | * This should be called by a driver after finishing creating snapshots | |
9635 | * with an id. Doing so ensures that the ID can later be released in the | |
9636 | * event that all snapshots using it have been destroyed. | |
9637 | * | |
9638 | * @devlink: devlink | |
9639 | * @id: id to release reference on | |
9640 | */ | |
9641 | void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id) | |
9642 | { | |
9643 | mutex_lock(&devlink->lock); | |
9644 | __devlink_snapshot_id_decrement(devlink, id); | |
9645 | mutex_unlock(&devlink->lock); | |
9646 | } | |
9647 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put); | |
9648 | ||
d7e52722 AV |
9649 | /** |
9650 | * devlink_region_snapshot_create - create a new snapshot | |
9651 | * This will add a new snapshot of a region. The snapshot | |
9652 | * will be stored on the region struct and can be accessed | |
6d82f67e | 9653 | * from devlink. This is useful for future analyses of snapshots. |
d7e52722 AV |
9654 | * Multiple snapshots can be created on a region. |
9655 | * The @snapshot_id should be obtained using the getter function. | |
9656 | * | |
eeaadd82 | 9657 | * @region: devlink region of the snapshot |
d7e52722 AV |
9658 | * @data: snapshot data |
9659 | * @snapshot_id: snapshot id to be created | |
d7e52722 | 9660 | */ |
3a5e5234 | 9661 | int devlink_region_snapshot_create(struct devlink_region *region, |
a0a09f6b | 9662 | u8 *data, u32 snapshot_id) |
d7e52722 AV |
9663 | { |
9664 | struct devlink *devlink = region->devlink; | |
d7e52722 AV |
9665 | int err; |
9666 | ||
9667 | mutex_lock(&devlink->lock); | |
cf80faee | 9668 | err = __devlink_region_snapshot_create(region, data, snapshot_id); |
d7e52722 | 9669 | mutex_unlock(&devlink->lock); |
d7e52722 | 9670 | |
d7e52722 AV |
9671 | return err; |
9672 | } | |
9673 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_create); | |
9674 | ||
0f420b6c IS |
9675 | #define DEVLINK_TRAP(_id, _type) \ |
9676 | { \ | |
9677 | .type = DEVLINK_TRAP_TYPE_##_type, \ | |
9678 | .id = DEVLINK_TRAP_GENERIC_ID_##_id, \ | |
9679 | .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \ | |
9680 | } | |
9681 | ||
9682 | static const struct devlink_trap devlink_trap_generic[] = { | |
391203ab IS |
9683 | DEVLINK_TRAP(SMAC_MC, DROP), |
9684 | DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP), | |
9685 | DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP), | |
9686 | DEVLINK_TRAP(INGRESS_STP_FILTER, DROP), | |
9687 | DEVLINK_TRAP(EMPTY_TX_LIST, DROP), | |
9688 | DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP), | |
9689 | DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP), | |
9690 | DEVLINK_TRAP(TTL_ERROR, EXCEPTION), | |
9691 | DEVLINK_TRAP(TAIL_DROP, DROP), | |
6896cc4d AC |
9692 | DEVLINK_TRAP(NON_IP_PACKET, DROP), |
9693 | DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP), | |
9694 | DEVLINK_TRAP(DIP_LB, DROP), | |
9695 | DEVLINK_TRAP(SIP_MC, DROP), | |
9696 | DEVLINK_TRAP(SIP_LB, DROP), | |
9697 | DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP), | |
9698 | DEVLINK_TRAP(IPV4_SIP_BC, DROP), | |
9699 | DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP), | |
9700 | DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP), | |
3b063ae5 AC |
9701 | DEVLINK_TRAP(MTU_ERROR, EXCEPTION), |
9702 | DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION), | |
9703 | DEVLINK_TRAP(RPF, EXCEPTION), | |
9704 | DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION), | |
9705 | DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION), | |
9706 | DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION), | |
95f0ead8 | 9707 | DEVLINK_TRAP(NON_ROUTABLE, DROP), |
13c056ec | 9708 | DEVLINK_TRAP(DECAP_ERROR, EXCEPTION), |
c3cae491 | 9709 | DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP), |
ecd942a0 JP |
9710 | DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP), |
9711 | DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP), | |
515eac67 IS |
9712 | DEVLINK_TRAP(STP, CONTROL), |
9713 | DEVLINK_TRAP(LACP, CONTROL), | |
9714 | DEVLINK_TRAP(LLDP, CONTROL), | |
9715 | DEVLINK_TRAP(IGMP_QUERY, CONTROL), | |
9716 | DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL), | |
9717 | DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL), | |
9718 | DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL), | |
9719 | DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL), | |
9720 | DEVLINK_TRAP(MLD_QUERY, CONTROL), | |
9721 | DEVLINK_TRAP(MLD_V1_REPORT, CONTROL), | |
9722 | DEVLINK_TRAP(MLD_V2_REPORT, CONTROL), | |
9723 | DEVLINK_TRAP(MLD_V1_DONE, CONTROL), | |
d77cfd16 IS |
9724 | DEVLINK_TRAP(IPV4_DHCP, CONTROL), |
9725 | DEVLINK_TRAP(IPV6_DHCP, CONTROL), | |
9726 | DEVLINK_TRAP(ARP_REQUEST, CONTROL), | |
9727 | DEVLINK_TRAP(ARP_RESPONSE, CONTROL), | |
9728 | DEVLINK_TRAP(ARP_OVERLAY, CONTROL), | |
9729 | DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL), | |
9730 | DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL), | |
9731 | DEVLINK_TRAP(IPV4_BFD, CONTROL), | |
9732 | DEVLINK_TRAP(IPV6_BFD, CONTROL), | |
9733 | DEVLINK_TRAP(IPV4_OSPF, CONTROL), | |
9734 | DEVLINK_TRAP(IPV6_OSPF, CONTROL), | |
9735 | DEVLINK_TRAP(IPV4_BGP, CONTROL), | |
9736 | DEVLINK_TRAP(IPV6_BGP, CONTROL), | |
9737 | DEVLINK_TRAP(IPV4_VRRP, CONTROL), | |
9738 | DEVLINK_TRAP(IPV6_VRRP, CONTROL), | |
9739 | DEVLINK_TRAP(IPV4_PIM, CONTROL), | |
9740 | DEVLINK_TRAP(IPV6_PIM, CONTROL), | |
9741 | DEVLINK_TRAP(UC_LB, CONTROL), | |
9742 | DEVLINK_TRAP(LOCAL_ROUTE, CONTROL), | |
9743 | DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL), | |
9744 | DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL), | |
9745 | DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL), | |
9746 | DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL), | |
9747 | DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL), | |
9748 | DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL), | |
9749 | DEVLINK_TRAP(IPV6_REDIRECT, CONTROL), | |
9750 | DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL), | |
9751 | DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL), | |
9752 | DEVLINK_TRAP(PTP_EVENT, CONTROL), | |
9753 | DEVLINK_TRAP(PTP_GENERAL, CONTROL), | |
5eb18a2b IS |
9754 | DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL), |
9755 | DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL), | |
08e335f6 | 9756 | DEVLINK_TRAP(EARLY_DROP, DROP), |
10c24eb2 IC |
9757 | DEVLINK_TRAP(VXLAN_PARSING, DROP), |
9758 | DEVLINK_TRAP(LLC_SNAP_PARSING, DROP), | |
9759 | DEVLINK_TRAP(VLAN_PARSING, DROP), | |
9760 | DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP), | |
9761 | DEVLINK_TRAP(MPLS_PARSING, DROP), | |
9762 | DEVLINK_TRAP(ARP_PARSING, DROP), | |
9763 | DEVLINK_TRAP(IP_1_PARSING, DROP), | |
9764 | DEVLINK_TRAP(IP_N_PARSING, DROP), | |
9765 | DEVLINK_TRAP(GRE_PARSING, DROP), | |
9766 | DEVLINK_TRAP(UDP_PARSING, DROP), | |
9767 | DEVLINK_TRAP(TCP_PARSING, DROP), | |
9768 | DEVLINK_TRAP(IPSEC_PARSING, DROP), | |
9769 | DEVLINK_TRAP(SCTP_PARSING, DROP), | |
9770 | DEVLINK_TRAP(DCCP_PARSING, DROP), | |
9771 | DEVLINK_TRAP(GTP_PARSING, DROP), | |
9772 | DEVLINK_TRAP(ESP_PARSING, DROP), | |
f0a5013e | 9773 | DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP), |
e78ab164 | 9774 | DEVLINK_TRAP(DMAC_FILTER, DROP), |
0f420b6c IS |
9775 | }; |
9776 | ||
9777 | #define DEVLINK_TRAP_GROUP(_id) \ | |
9778 | { \ | |
9779 | .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \ | |
9780 | .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \ | |
9781 | } | |
9782 | ||
9783 | static const struct devlink_trap_group devlink_trap_group_generic[] = { | |
391203ab IS |
9784 | DEVLINK_TRAP_GROUP(L2_DROPS), |
9785 | DEVLINK_TRAP_GROUP(L3_DROPS), | |
678eb199 | 9786 | DEVLINK_TRAP_GROUP(L3_EXCEPTIONS), |
391203ab | 9787 | DEVLINK_TRAP_GROUP(BUFFER_DROPS), |
13c056ec | 9788 | DEVLINK_TRAP_GROUP(TUNNEL_DROPS), |
ecd942a0 | 9789 | DEVLINK_TRAP_GROUP(ACL_DROPS), |
515eac67 IS |
9790 | DEVLINK_TRAP_GROUP(STP), |
9791 | DEVLINK_TRAP_GROUP(LACP), | |
9792 | DEVLINK_TRAP_GROUP(LLDP), | |
9793 | DEVLINK_TRAP_GROUP(MC_SNOOPING), | |
d77cfd16 IS |
9794 | DEVLINK_TRAP_GROUP(DHCP), |
9795 | DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY), | |
9796 | DEVLINK_TRAP_GROUP(BFD), | |
9797 | DEVLINK_TRAP_GROUP(OSPF), | |
9798 | DEVLINK_TRAP_GROUP(BGP), | |
9799 | DEVLINK_TRAP_GROUP(VRRP), | |
9800 | DEVLINK_TRAP_GROUP(PIM), | |
9801 | DEVLINK_TRAP_GROUP(UC_LB), | |
9802 | DEVLINK_TRAP_GROUP(LOCAL_DELIVERY), | |
ec4f5b36 | 9803 | DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY), |
d77cfd16 IS |
9804 | DEVLINK_TRAP_GROUP(IPV6), |
9805 | DEVLINK_TRAP_GROUP(PTP_EVENT), | |
9806 | DEVLINK_TRAP_GROUP(PTP_GENERAL), | |
5eb18a2b IS |
9807 | DEVLINK_TRAP_GROUP(ACL_SAMPLE), |
9808 | DEVLINK_TRAP_GROUP(ACL_TRAP), | |
10c24eb2 | 9809 | DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS), |
0f420b6c IS |
9810 | }; |
9811 | ||
9812 | static int devlink_trap_generic_verify(const struct devlink_trap *trap) | |
9813 | { | |
9814 | if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX) | |
9815 | return -EINVAL; | |
9816 | ||
9817 | if (strcmp(trap->name, devlink_trap_generic[trap->id].name)) | |
9818 | return -EINVAL; | |
9819 | ||
9820 | if (trap->type != devlink_trap_generic[trap->id].type) | |
9821 | return -EINVAL; | |
9822 | ||
9823 | return 0; | |
9824 | } | |
9825 | ||
9826 | static int devlink_trap_driver_verify(const struct devlink_trap *trap) | |
9827 | { | |
9828 | int i; | |
9829 | ||
9830 | if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX) | |
9831 | return -EINVAL; | |
9832 | ||
9833 | for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) { | |
9834 | if (!strcmp(trap->name, devlink_trap_generic[i].name)) | |
9835 | return -EEXIST; | |
9836 | } | |
9837 | ||
9838 | return 0; | |
9839 | } | |
9840 | ||
9841 | static int devlink_trap_verify(const struct devlink_trap *trap) | |
9842 | { | |
107f1678 | 9843 | if (!trap || !trap->name) |
0f420b6c IS |
9844 | return -EINVAL; |
9845 | ||
9846 | if (trap->generic) | |
9847 | return devlink_trap_generic_verify(trap); | |
9848 | else | |
9849 | return devlink_trap_driver_verify(trap); | |
9850 | } | |
9851 | ||
9852 | static int | |
9853 | devlink_trap_group_generic_verify(const struct devlink_trap_group *group) | |
9854 | { | |
9855 | if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX) | |
9856 | return -EINVAL; | |
9857 | ||
9858 | if (strcmp(group->name, devlink_trap_group_generic[group->id].name)) | |
9859 | return -EINVAL; | |
9860 | ||
9861 | return 0; | |
9862 | } | |
9863 | ||
9864 | static int | |
9865 | devlink_trap_group_driver_verify(const struct devlink_trap_group *group) | |
9866 | { | |
9867 | int i; | |
9868 | ||
9869 | if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX) | |
9870 | return -EINVAL; | |
9871 | ||
9872 | for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) { | |
9873 | if (!strcmp(group->name, devlink_trap_group_generic[i].name)) | |
9874 | return -EEXIST; | |
9875 | } | |
9876 | ||
9877 | return 0; | |
9878 | } | |
9879 | ||
9880 | static int devlink_trap_group_verify(const struct devlink_trap_group *group) | |
9881 | { | |
9882 | if (group->generic) | |
9883 | return devlink_trap_group_generic_verify(group); | |
9884 | else | |
9885 | return devlink_trap_group_driver_verify(group); | |
9886 | } | |
9887 | ||
9888 | static void | |
9889 | devlink_trap_group_notify(struct devlink *devlink, | |
9890 | const struct devlink_trap_group_item *group_item, | |
9891 | enum devlink_command cmd) | |
9892 | { | |
9893 | struct sk_buff *msg; | |
9894 | int err; | |
9895 | ||
9896 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW && | |
9897 | cmd != DEVLINK_CMD_TRAP_GROUP_DEL); | |
9898 | ||
9899 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
9900 | if (!msg) | |
9901 | return; | |
9902 | ||
9903 | err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0, | |
9904 | 0); | |
9905 | if (err) { | |
9906 | nlmsg_free(msg); | |
9907 | return; | |
9908 | } | |
9909 | ||
9910 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
9911 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
9912 | } | |
9913 | ||
0f420b6c IS |
9914 | static int |
9915 | devlink_trap_item_group_link(struct devlink *devlink, | |
9916 | struct devlink_trap_item *trap_item) | |
9917 | { | |
107f1678 | 9918 | u16 group_id = trap_item->trap->init_group_id; |
0f420b6c IS |
9919 | struct devlink_trap_group_item *group_item; |
9920 | ||
107f1678 | 9921 | group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id); |
a09b37fc IS |
9922 | if (WARN_ON_ONCE(!group_item)) |
9923 | return -EINVAL; | |
0f420b6c IS |
9924 | |
9925 | trap_item->group_item = group_item; | |
9926 | ||
9927 | return 0; | |
9928 | } | |
9929 | ||
0f420b6c IS |
9930 | static void devlink_trap_notify(struct devlink *devlink, |
9931 | const struct devlink_trap_item *trap_item, | |
9932 | enum devlink_command cmd) | |
9933 | { | |
9934 | struct sk_buff *msg; | |
9935 | int err; | |
9936 | ||
9937 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW && | |
9938 | cmd != DEVLINK_CMD_TRAP_DEL); | |
9939 | ||
9940 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
9941 | if (!msg) | |
9942 | return; | |
9943 | ||
9944 | err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0); | |
9945 | if (err) { | |
9946 | nlmsg_free(msg); | |
9947 | return; | |
9948 | } | |
9949 | ||
9950 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
9951 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
9952 | } | |
9953 | ||
9954 | static int | |
9955 | devlink_trap_register(struct devlink *devlink, | |
9956 | const struct devlink_trap *trap, void *priv) | |
9957 | { | |
9958 | struct devlink_trap_item *trap_item; | |
9959 | int err; | |
9960 | ||
9961 | if (devlink_trap_item_lookup(devlink, trap->name)) | |
9962 | return -EEXIST; | |
9963 | ||
9964 | trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL); | |
9965 | if (!trap_item) | |
9966 | return -ENOMEM; | |
9967 | ||
9968 | trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats); | |
9969 | if (!trap_item->stats) { | |
9970 | err = -ENOMEM; | |
9971 | goto err_stats_alloc; | |
9972 | } | |
9973 | ||
9974 | trap_item->trap = trap; | |
9975 | trap_item->action = trap->init_action; | |
9976 | trap_item->priv = priv; | |
9977 | ||
9978 | err = devlink_trap_item_group_link(devlink, trap_item); | |
9979 | if (err) | |
9980 | goto err_group_link; | |
9981 | ||
9982 | err = devlink->ops->trap_init(devlink, trap, trap_item); | |
9983 | if (err) | |
9984 | goto err_trap_init; | |
9985 | ||
9986 | list_add_tail(&trap_item->list, &devlink->trap_list); | |
9987 | devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW); | |
9988 | ||
9989 | return 0; | |
9990 | ||
9991 | err_trap_init: | |
0f420b6c IS |
9992 | err_group_link: |
9993 | free_percpu(trap_item->stats); | |
9994 | err_stats_alloc: | |
9995 | kfree(trap_item); | |
9996 | return err; | |
9997 | } | |
9998 | ||
9999 | static void devlink_trap_unregister(struct devlink *devlink, | |
10000 | const struct devlink_trap *trap) | |
10001 | { | |
10002 | struct devlink_trap_item *trap_item; | |
10003 | ||
10004 | trap_item = devlink_trap_item_lookup(devlink, trap->name); | |
10005 | if (WARN_ON_ONCE(!trap_item)) | |
10006 | return; | |
10007 | ||
10008 | devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL); | |
10009 | list_del(&trap_item->list); | |
10010 | if (devlink->ops->trap_fini) | |
10011 | devlink->ops->trap_fini(devlink, trap, trap_item); | |
0f420b6c IS |
10012 | free_percpu(trap_item->stats); |
10013 | kfree(trap_item); | |
10014 | } | |
10015 | ||
10016 | static void devlink_trap_disable(struct devlink *devlink, | |
10017 | const struct devlink_trap *trap) | |
10018 | { | |
10019 | struct devlink_trap_item *trap_item; | |
10020 | ||
10021 | trap_item = devlink_trap_item_lookup(devlink, trap->name); | |
10022 | if (WARN_ON_ONCE(!trap_item)) | |
10023 | return; | |
10024 | ||
c88e11e0 IS |
10025 | devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP, |
10026 | NULL); | |
0f420b6c IS |
10027 | trap_item->action = DEVLINK_TRAP_ACTION_DROP; |
10028 | } | |
10029 | ||
10030 | /** | |
10031 | * devlink_traps_register - Register packet traps with devlink. | |
10032 | * @devlink: devlink. | |
10033 | * @traps: Packet traps. | |
10034 | * @traps_count: Count of provided packet traps. | |
10035 | * @priv: Driver private information. | |
10036 | * | |
10037 | * Return: Non-zero value on failure. | |
10038 | */ | |
10039 | int devlink_traps_register(struct devlink *devlink, | |
10040 | const struct devlink_trap *traps, | |
10041 | size_t traps_count, void *priv) | |
10042 | { | |
10043 | int i, err; | |
10044 | ||
10045 | if (!devlink->ops->trap_init || !devlink->ops->trap_action_set) | |
10046 | return -EINVAL; | |
10047 | ||
10048 | mutex_lock(&devlink->lock); | |
10049 | for (i = 0; i < traps_count; i++) { | |
10050 | const struct devlink_trap *trap = &traps[i]; | |
10051 | ||
10052 | err = devlink_trap_verify(trap); | |
10053 | if (err) | |
10054 | goto err_trap_verify; | |
10055 | ||
10056 | err = devlink_trap_register(devlink, trap, priv); | |
10057 | if (err) | |
10058 | goto err_trap_register; | |
10059 | } | |
10060 | mutex_unlock(&devlink->lock); | |
10061 | ||
10062 | return 0; | |
10063 | ||
10064 | err_trap_register: | |
10065 | err_trap_verify: | |
10066 | for (i--; i >= 0; i--) | |
10067 | devlink_trap_unregister(devlink, &traps[i]); | |
10068 | mutex_unlock(&devlink->lock); | |
10069 | return err; | |
10070 | } | |
10071 | EXPORT_SYMBOL_GPL(devlink_traps_register); | |
10072 | ||
10073 | /** | |
10074 | * devlink_traps_unregister - Unregister packet traps from devlink. | |
10075 | * @devlink: devlink. | |
10076 | * @traps: Packet traps. | |
10077 | * @traps_count: Count of provided packet traps. | |
10078 | */ | |
10079 | void devlink_traps_unregister(struct devlink *devlink, | |
10080 | const struct devlink_trap *traps, | |
10081 | size_t traps_count) | |
10082 | { | |
10083 | int i; | |
10084 | ||
10085 | mutex_lock(&devlink->lock); | |
10086 | /* Make sure we do not have any packets in-flight while unregistering | |
10087 | * traps by disabling all of them and waiting for a grace period. | |
10088 | */ | |
10089 | for (i = traps_count - 1; i >= 0; i--) | |
10090 | devlink_trap_disable(devlink, &traps[i]); | |
10091 | synchronize_rcu(); | |
10092 | for (i = traps_count - 1; i >= 0; i--) | |
10093 | devlink_trap_unregister(devlink, &traps[i]); | |
10094 | mutex_unlock(&devlink->lock); | |
10095 | } | |
10096 | EXPORT_SYMBOL_GPL(devlink_traps_unregister); | |
10097 | ||
10098 | static void | |
10099 | devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats, | |
10100 | size_t skb_len) | |
10101 | { | |
10102 | struct devlink_stats *stats; | |
10103 | ||
10104 | stats = this_cpu_ptr(trap_stats); | |
10105 | u64_stats_update_begin(&stats->syncp); | |
10106 | stats->rx_bytes += skb_len; | |
10107 | stats->rx_packets++; | |
10108 | u64_stats_update_end(&stats->syncp); | |
10109 | } | |
10110 | ||
5b88823b IS |
10111 | static void |
10112 | devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata, | |
10113 | const struct devlink_trap_item *trap_item, | |
10114 | struct devlink_port *in_devlink_port, | |
10115 | const struct flow_action_cookie *fa_cookie) | |
10116 | { | |
10117 | metadata->trap_name = trap_item->trap->name; | |
10118 | metadata->trap_group_name = trap_item->group_item->group->name; | |
10119 | metadata->fa_cookie = fa_cookie; | |
93e15596 | 10120 | metadata->trap_type = trap_item->trap->type; |
5b88823b IS |
10121 | |
10122 | spin_lock(&in_devlink_port->type_lock); | |
10123 | if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH) | |
10124 | metadata->input_dev = in_devlink_port->type_dev; | |
10125 | spin_unlock(&in_devlink_port->type_lock); | |
10126 | } | |
10127 | ||
0f420b6c IS |
10128 | /** |
10129 | * devlink_trap_report - Report trapped packet to drop monitor. | |
10130 | * @devlink: devlink. | |
10131 | * @skb: Trapped packet. | |
10132 | * @trap_ctx: Trap context. | |
10133 | * @in_devlink_port: Input devlink port. | |
5a2e106c | 10134 | * @fa_cookie: Flow action cookie. Could be NULL. |
0f420b6c IS |
10135 | */ |
10136 | void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb, | |
5a2e106c JP |
10137 | void *trap_ctx, struct devlink_port *in_devlink_port, |
10138 | const struct flow_action_cookie *fa_cookie) | |
10139 | ||
0f420b6c IS |
10140 | { |
10141 | struct devlink_trap_item *trap_item = trap_ctx; | |
0f420b6c IS |
10142 | |
10143 | devlink_trap_stats_update(trap_item->stats, skb->len); | |
10144 | devlink_trap_stats_update(trap_item->group_item->stats, skb->len); | |
10145 | ||
5b88823b IS |
10146 | if (trace_devlink_trap_report_enabled()) { |
10147 | struct devlink_trap_metadata metadata = {}; | |
10148 | ||
10149 | devlink_trap_report_metadata_set(&metadata, trap_item, | |
10150 | in_devlink_port, fa_cookie); | |
10151 | trace_devlink_trap_report(devlink, skb, &metadata); | |
10152 | } | |
0f420b6c IS |
10153 | } |
10154 | EXPORT_SYMBOL_GPL(devlink_trap_report); | |
10155 | ||
10156 | /** | |
10157 | * devlink_trap_ctx_priv - Trap context to driver private information. | |
10158 | * @trap_ctx: Trap context. | |
10159 | * | |
10160 | * Return: Driver private information passed during registration. | |
10161 | */ | |
10162 | void *devlink_trap_ctx_priv(void *trap_ctx) | |
10163 | { | |
10164 | struct devlink_trap_item *trap_item = trap_ctx; | |
10165 | ||
10166 | return trap_item->priv; | |
10167 | } | |
10168 | EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv); | |
10169 | ||
f9f54392 IS |
10170 | static int |
10171 | devlink_trap_group_item_policer_link(struct devlink *devlink, | |
10172 | struct devlink_trap_group_item *group_item) | |
10173 | { | |
10174 | u32 policer_id = group_item->group->init_policer_id; | |
10175 | struct devlink_trap_policer_item *policer_item; | |
10176 | ||
10177 | if (policer_id == 0) | |
10178 | return 0; | |
10179 | ||
10180 | policer_item = devlink_trap_policer_item_lookup(devlink, policer_id); | |
10181 | if (WARN_ON_ONCE(!policer_item)) | |
10182 | return -EINVAL; | |
10183 | ||
10184 | group_item->policer_item = policer_item; | |
10185 | ||
10186 | return 0; | |
10187 | } | |
10188 | ||
95ad9555 IS |
10189 | static int |
10190 | devlink_trap_group_register(struct devlink *devlink, | |
10191 | const struct devlink_trap_group *group) | |
10192 | { | |
10193 | struct devlink_trap_group_item *group_item; | |
10194 | int err; | |
10195 | ||
10196 | if (devlink_trap_group_item_lookup(devlink, group->name)) | |
10197 | return -EEXIST; | |
10198 | ||
10199 | group_item = kzalloc(sizeof(*group_item), GFP_KERNEL); | |
10200 | if (!group_item) | |
10201 | return -ENOMEM; | |
10202 | ||
10203 | group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats); | |
10204 | if (!group_item->stats) { | |
10205 | err = -ENOMEM; | |
10206 | goto err_stats_alloc; | |
10207 | } | |
10208 | ||
10209 | group_item->group = group; | |
95ad9555 | 10210 | |
f9f54392 IS |
10211 | err = devlink_trap_group_item_policer_link(devlink, group_item); |
10212 | if (err) | |
10213 | goto err_policer_link; | |
10214 | ||
95ad9555 IS |
10215 | if (devlink->ops->trap_group_init) { |
10216 | err = devlink->ops->trap_group_init(devlink, group); | |
10217 | if (err) | |
10218 | goto err_group_init; | |
10219 | } | |
10220 | ||
10221 | list_add_tail(&group_item->list, &devlink->trap_group_list); | |
10222 | devlink_trap_group_notify(devlink, group_item, | |
10223 | DEVLINK_CMD_TRAP_GROUP_NEW); | |
10224 | ||
10225 | return 0; | |
10226 | ||
10227 | err_group_init: | |
f9f54392 | 10228 | err_policer_link: |
95ad9555 IS |
10229 | free_percpu(group_item->stats); |
10230 | err_stats_alloc: | |
10231 | kfree(group_item); | |
10232 | return err; | |
10233 | } | |
10234 | ||
10235 | static void | |
10236 | devlink_trap_group_unregister(struct devlink *devlink, | |
10237 | const struct devlink_trap_group *group) | |
10238 | { | |
10239 | struct devlink_trap_group_item *group_item; | |
10240 | ||
10241 | group_item = devlink_trap_group_item_lookup(devlink, group->name); | |
10242 | if (WARN_ON_ONCE(!group_item)) | |
10243 | return; | |
10244 | ||
10245 | devlink_trap_group_notify(devlink, group_item, | |
10246 | DEVLINK_CMD_TRAP_GROUP_DEL); | |
10247 | list_del(&group_item->list); | |
10248 | free_percpu(group_item->stats); | |
10249 | kfree(group_item); | |
10250 | } | |
10251 | ||
10252 | /** | |
10253 | * devlink_trap_groups_register - Register packet trap groups with devlink. | |
10254 | * @devlink: devlink. | |
10255 | * @groups: Packet trap groups. | |
10256 | * @groups_count: Count of provided packet trap groups. | |
10257 | * | |
10258 | * Return: Non-zero value on failure. | |
10259 | */ | |
10260 | int devlink_trap_groups_register(struct devlink *devlink, | |
10261 | const struct devlink_trap_group *groups, | |
10262 | size_t groups_count) | |
10263 | { | |
10264 | int i, err; | |
10265 | ||
10266 | mutex_lock(&devlink->lock); | |
10267 | for (i = 0; i < groups_count; i++) { | |
10268 | const struct devlink_trap_group *group = &groups[i]; | |
10269 | ||
10270 | err = devlink_trap_group_verify(group); | |
10271 | if (err) | |
10272 | goto err_trap_group_verify; | |
10273 | ||
10274 | err = devlink_trap_group_register(devlink, group); | |
10275 | if (err) | |
10276 | goto err_trap_group_register; | |
10277 | } | |
10278 | mutex_unlock(&devlink->lock); | |
10279 | ||
10280 | return 0; | |
10281 | ||
10282 | err_trap_group_register: | |
10283 | err_trap_group_verify: | |
10284 | for (i--; i >= 0; i--) | |
10285 | devlink_trap_group_unregister(devlink, &groups[i]); | |
10286 | mutex_unlock(&devlink->lock); | |
10287 | return err; | |
10288 | } | |
10289 | EXPORT_SYMBOL_GPL(devlink_trap_groups_register); | |
10290 | ||
10291 | /** | |
10292 | * devlink_trap_groups_unregister - Unregister packet trap groups from devlink. | |
10293 | * @devlink: devlink. | |
10294 | * @groups: Packet trap groups. | |
10295 | * @groups_count: Count of provided packet trap groups. | |
10296 | */ | |
10297 | void devlink_trap_groups_unregister(struct devlink *devlink, | |
10298 | const struct devlink_trap_group *groups, | |
10299 | size_t groups_count) | |
10300 | { | |
10301 | int i; | |
10302 | ||
10303 | mutex_lock(&devlink->lock); | |
10304 | for (i = groups_count - 1; i >= 0; i--) | |
10305 | devlink_trap_group_unregister(devlink, &groups[i]); | |
10306 | mutex_unlock(&devlink->lock); | |
10307 | } | |
10308 | EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister); | |
10309 | ||
1e8c6619 IS |
10310 | static void |
10311 | devlink_trap_policer_notify(struct devlink *devlink, | |
10312 | const struct devlink_trap_policer_item *policer_item, | |
10313 | enum devlink_command cmd) | |
10314 | { | |
10315 | struct sk_buff *msg; | |
10316 | int err; | |
10317 | ||
10318 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW && | |
10319 | cmd != DEVLINK_CMD_TRAP_POLICER_DEL); | |
10320 | ||
10321 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
10322 | if (!msg) | |
10323 | return; | |
10324 | ||
10325 | err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0, | |
10326 | 0, 0); | |
10327 | if (err) { | |
10328 | nlmsg_free(msg); | |
10329 | return; | |
10330 | } | |
10331 | ||
10332 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
10333 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
10334 | } | |
10335 | ||
10336 | static int | |
10337 | devlink_trap_policer_register(struct devlink *devlink, | |
10338 | const struct devlink_trap_policer *policer) | |
10339 | { | |
10340 | struct devlink_trap_policer_item *policer_item; | |
10341 | int err; | |
10342 | ||
10343 | if (devlink_trap_policer_item_lookup(devlink, policer->id)) | |
10344 | return -EEXIST; | |
10345 | ||
10346 | policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL); | |
10347 | if (!policer_item) | |
10348 | return -ENOMEM; | |
10349 | ||
10350 | policer_item->policer = policer; | |
10351 | policer_item->rate = policer->init_rate; | |
10352 | policer_item->burst = policer->init_burst; | |
10353 | ||
10354 | if (devlink->ops->trap_policer_init) { | |
10355 | err = devlink->ops->trap_policer_init(devlink, policer); | |
10356 | if (err) | |
10357 | goto err_policer_init; | |
10358 | } | |
10359 | ||
10360 | list_add_tail(&policer_item->list, &devlink->trap_policer_list); | |
10361 | devlink_trap_policer_notify(devlink, policer_item, | |
10362 | DEVLINK_CMD_TRAP_POLICER_NEW); | |
10363 | ||
10364 | return 0; | |
10365 | ||
10366 | err_policer_init: | |
10367 | kfree(policer_item); | |
10368 | return err; | |
10369 | } | |
10370 | ||
10371 | static void | |
10372 | devlink_trap_policer_unregister(struct devlink *devlink, | |
10373 | const struct devlink_trap_policer *policer) | |
10374 | { | |
10375 | struct devlink_trap_policer_item *policer_item; | |
10376 | ||
10377 | policer_item = devlink_trap_policer_item_lookup(devlink, policer->id); | |
10378 | if (WARN_ON_ONCE(!policer_item)) | |
10379 | return; | |
10380 | ||
10381 | devlink_trap_policer_notify(devlink, policer_item, | |
10382 | DEVLINK_CMD_TRAP_POLICER_DEL); | |
10383 | list_del(&policer_item->list); | |
10384 | if (devlink->ops->trap_policer_fini) | |
10385 | devlink->ops->trap_policer_fini(devlink, policer); | |
10386 | kfree(policer_item); | |
10387 | } | |
10388 | ||
10389 | /** | |
10390 | * devlink_trap_policers_register - Register packet trap policers with devlink. | |
10391 | * @devlink: devlink. | |
10392 | * @policers: Packet trap policers. | |
10393 | * @policers_count: Count of provided packet trap policers. | |
10394 | * | |
10395 | * Return: Non-zero value on failure. | |
10396 | */ | |
10397 | int | |
10398 | devlink_trap_policers_register(struct devlink *devlink, | |
10399 | const struct devlink_trap_policer *policers, | |
10400 | size_t policers_count) | |
10401 | { | |
10402 | int i, err; | |
10403 | ||
10404 | mutex_lock(&devlink->lock); | |
10405 | for (i = 0; i < policers_count; i++) { | |
10406 | const struct devlink_trap_policer *policer = &policers[i]; | |
10407 | ||
10408 | if (WARN_ON(policer->id == 0 || | |
10409 | policer->max_rate < policer->min_rate || | |
10410 | policer->max_burst < policer->min_burst)) { | |
10411 | err = -EINVAL; | |
10412 | goto err_trap_policer_verify; | |
10413 | } | |
10414 | ||
10415 | err = devlink_trap_policer_register(devlink, policer); | |
10416 | if (err) | |
10417 | goto err_trap_policer_register; | |
10418 | } | |
10419 | mutex_unlock(&devlink->lock); | |
10420 | ||
10421 | return 0; | |
10422 | ||
10423 | err_trap_policer_register: | |
10424 | err_trap_policer_verify: | |
10425 | for (i--; i >= 0; i--) | |
10426 | devlink_trap_policer_unregister(devlink, &policers[i]); | |
10427 | mutex_unlock(&devlink->lock); | |
10428 | return err; | |
10429 | } | |
10430 | EXPORT_SYMBOL_GPL(devlink_trap_policers_register); | |
10431 | ||
10432 | /** | |
10433 | * devlink_trap_policers_unregister - Unregister packet trap policers from devlink. | |
10434 | * @devlink: devlink. | |
10435 | * @policers: Packet trap policers. | |
10436 | * @policers_count: Count of provided packet trap policers. | |
10437 | */ | |
10438 | void | |
10439 | devlink_trap_policers_unregister(struct devlink *devlink, | |
10440 | const struct devlink_trap_policer *policers, | |
10441 | size_t policers_count) | |
10442 | { | |
10443 | int i; | |
10444 | ||
10445 | mutex_lock(&devlink->lock); | |
10446 | for (i = policers_count - 1; i >= 0; i--) | |
10447 | devlink_trap_policer_unregister(devlink, &policers[i]); | |
10448 | mutex_unlock(&devlink->lock); | |
10449 | } | |
10450 | EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister); | |
10451 | ||
ddb6e99e JK |
10452 | static void __devlink_compat_running_version(struct devlink *devlink, |
10453 | char *buf, size_t len) | |
10454 | { | |
10455 | const struct nlattr *nlattr; | |
10456 | struct devlink_info_req req; | |
10457 | struct sk_buff *msg; | |
10458 | int rem, err; | |
10459 | ||
ddb6e99e JK |
10460 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
10461 | if (!msg) | |
10462 | return; | |
10463 | ||
10464 | req.msg = msg; | |
10465 | err = devlink->ops->info_get(devlink, &req, NULL); | |
10466 | if (err) | |
10467 | goto free_msg; | |
10468 | ||
10469 | nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) { | |
10470 | const struct nlattr *kv; | |
10471 | int rem_kv; | |
10472 | ||
10473 | if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING) | |
10474 | continue; | |
10475 | ||
10476 | nla_for_each_nested(kv, nlattr, rem_kv) { | |
10477 | if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE) | |
10478 | continue; | |
10479 | ||
10480 | strlcat(buf, nla_data(kv), len); | |
10481 | strlcat(buf, " ", len); | |
10482 | } | |
10483 | } | |
10484 | free_msg: | |
10485 | nlmsg_free(msg); | |
10486 | } | |
10487 | ||
10488 | void devlink_compat_running_version(struct net_device *dev, | |
10489 | char *buf, size_t len) | |
10490 | { | |
ddb6e99e JK |
10491 | struct devlink *devlink; |
10492 | ||
1b45ff6c JK |
10493 | dev_hold(dev); |
10494 | rtnl_unlock(); | |
10495 | ||
b473b0d2 | 10496 | devlink = netdev_to_devlink(dev); |
be6fe1d8 | 10497 | if (!devlink || !devlink->ops->info_get) |
e0dcd386 | 10498 | goto out; |
b473b0d2 JK |
10499 | |
10500 | mutex_lock(&devlink->lock); | |
10501 | __devlink_compat_running_version(devlink, buf, len); | |
10502 | mutex_unlock(&devlink->lock); | |
1b45ff6c | 10503 | |
e0dcd386 | 10504 | out: |
1b45ff6c JK |
10505 | rtnl_lock(); |
10506 | dev_put(dev); | |
ddb6e99e JK |
10507 | } |
10508 | ||
4eceba17 JK |
10509 | int devlink_compat_flash_update(struct net_device *dev, const char *file_name) |
10510 | { | |
bc75c054 | 10511 | struct devlink_flash_update_params params = {}; |
4eceba17 | 10512 | struct devlink *devlink; |
e0dcd386 | 10513 | int ret; |
4eceba17 | 10514 | |
1b45ff6c JK |
10515 | dev_hold(dev); |
10516 | rtnl_unlock(); | |
10517 | ||
b473b0d2 | 10518 | devlink = netdev_to_devlink(dev); |
e0dcd386 JP |
10519 | if (!devlink || !devlink->ops->flash_update) { |
10520 | ret = -EOPNOTSUPP; | |
10521 | goto out; | |
10522 | } | |
4eceba17 | 10523 | |
b44cfd4f JK |
10524 | ret = request_firmware(¶ms.fw, file_name, devlink->dev); |
10525 | if (ret) | |
10526 | goto out; | |
bc75c054 | 10527 | |
b473b0d2 | 10528 | mutex_lock(&devlink->lock); |
52cc5f3a | 10529 | devlink_flash_update_begin_notify(devlink); |
bc75c054 | 10530 | ret = devlink->ops->flash_update(devlink, ¶ms, NULL); |
52cc5f3a | 10531 | devlink_flash_update_end_notify(devlink); |
b473b0d2 | 10532 | mutex_unlock(&devlink->lock); |
1b45ff6c | 10533 | |
b44cfd4f JK |
10534 | release_firmware(params.fw); |
10535 | ||
e0dcd386 | 10536 | out: |
1b45ff6c JK |
10537 | rtnl_lock(); |
10538 | dev_put(dev); | |
10539 | ||
b473b0d2 | 10540 | return ret; |
4eceba17 JK |
10541 | } |
10542 | ||
af3836df JP |
10543 | int devlink_compat_phys_port_name_get(struct net_device *dev, |
10544 | char *name, size_t len) | |
10545 | { | |
10546 | struct devlink_port *devlink_port; | |
10547 | ||
10548 | /* RTNL mutex is held here which ensures that devlink_port | |
10549 | * instance cannot disappear in the middle. No need to take | |
10550 | * any devlink lock as only permanent values are accessed. | |
10551 | */ | |
10552 | ASSERT_RTNL(); | |
10553 | ||
10554 | devlink_port = netdev_to_devlink_port(dev); | |
10555 | if (!devlink_port) | |
10556 | return -EOPNOTSUPP; | |
10557 | ||
10558 | return __devlink_port_phys_port_name_get(devlink_port, name, len); | |
10559 | } | |
10560 | ||
7e1146e8 JP |
10561 | int devlink_compat_switch_id_get(struct net_device *dev, |
10562 | struct netdev_phys_item_id *ppid) | |
10563 | { | |
10564 | struct devlink_port *devlink_port; | |
10565 | ||
043b8413 VB |
10566 | /* Caller must hold RTNL mutex or reference to dev, which ensures that |
10567 | * devlink_port instance cannot disappear in the middle. No need to take | |
7e1146e8 JP |
10568 | * any devlink lock as only permanent values are accessed. |
10569 | */ | |
7e1146e8 | 10570 | devlink_port = netdev_to_devlink_port(dev); |
46737a19 | 10571 | if (!devlink_port || !devlink_port->switch_port) |
7e1146e8 JP |
10572 | return -EOPNOTSUPP; |
10573 | ||
10574 | memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid)); | |
10575 | ||
10576 | return 0; | |
10577 | } | |
10578 | ||
070c63f2 JP |
10579 | static void __net_exit devlink_pernet_pre_exit(struct net *net) |
10580 | { | |
10581 | struct devlink *devlink; | |
ccdf0721 | 10582 | u32 actions_performed; |
070c63f2 JP |
10583 | int err; |
10584 | ||
10585 | /* In case network namespace is getting destroyed, reload | |
10586 | * all devlink instances from this namespace into init_net. | |
10587 | */ | |
10588 | mutex_lock(&devlink_mutex); | |
10589 | list_for_each_entry(devlink, &devlink_list, list) { | |
10590 | if (net_eq(devlink_net(devlink), net)) { | |
69d56e0e | 10591 | if (WARN_ON(!devlink_reload_supported(devlink->ops))) |
070c63f2 | 10592 | continue; |
ccdf0721 MS |
10593 | err = devlink_reload(devlink, &init_net, |
10594 | DEVLINK_RELOAD_ACTION_DRIVER_REINIT, | |
dc64cc7c | 10595 | DEVLINK_RELOAD_LIMIT_UNSPEC, |
ccdf0721 | 10596 | &actions_performed, NULL); |
a0c76345 | 10597 | if (err && err != -EOPNOTSUPP) |
070c63f2 JP |
10598 | pr_warn("Failed to reload devlink instance into init_net\n"); |
10599 | } | |
10600 | } | |
10601 | mutex_unlock(&devlink_mutex); | |
10602 | } | |
10603 | ||
10604 | static struct pernet_operations devlink_pernet_ops __net_initdata = { | |
10605 | .pre_exit = devlink_pernet_pre_exit, | |
10606 | }; | |
10607 | ||
f4b6bcc7 | 10608 | static int __init devlink_init(void) |
bfcd3a46 | 10609 | { |
070c63f2 JP |
10610 | int err; |
10611 | ||
10612 | err = genl_register_family(&devlink_nl_family); | |
10613 | if (err) | |
10614 | goto out; | |
10615 | err = register_pernet_subsys(&devlink_pernet_ops); | |
10616 | ||
10617 | out: | |
10618 | WARN_ON(err); | |
10619 | return err; | |
bfcd3a46 JP |
10620 | } |
10621 | ||
f4b6bcc7 | 10622 | subsys_initcall(devlink_init); |