Commit | Line | Data |
---|---|---|
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> | |
0f420b6c | 30 | #include <net/drop_monitor.h> |
e5224f0f JP |
31 | #define CREATE_TRACE_POINTS |
32 | #include <trace/events/devlink.h> | |
33 | ||
11770091 AS |
34 | static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = { |
35 | { | |
12bdc5e1 | 36 | .name = "destination mac", |
11770091 AS |
37 | .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC, |
38 | .bitwidth = 48, | |
39 | }, | |
40 | }; | |
41 | ||
42 | struct devlink_dpipe_header devlink_dpipe_header_ethernet = { | |
43 | .name = "ethernet", | |
44 | .id = DEVLINK_DPIPE_HEADER_ETHERNET, | |
45 | .fields = devlink_dpipe_fields_ethernet, | |
46 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet), | |
47 | .global = true, | |
48 | }; | |
49 | EXPORT_SYMBOL(devlink_dpipe_header_ethernet); | |
50 | ||
3fb886ec AS |
51 | static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = { |
52 | { | |
53 | .name = "destination ip", | |
54 | .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP, | |
55 | .bitwidth = 32, | |
56 | }, | |
57 | }; | |
58 | ||
59 | struct devlink_dpipe_header devlink_dpipe_header_ipv4 = { | |
60 | .name = "ipv4", | |
61 | .id = DEVLINK_DPIPE_HEADER_IPV4, | |
62 | .fields = devlink_dpipe_fields_ipv4, | |
63 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4), | |
64 | .global = true, | |
65 | }; | |
66 | EXPORT_SYMBOL(devlink_dpipe_header_ipv4); | |
67 | ||
1797f5b3 AS |
68 | static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = { |
69 | { | |
70 | .name = "destination ip", | |
71 | .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP, | |
72 | .bitwidth = 128, | |
73 | }, | |
74 | }; | |
75 | ||
76 | struct devlink_dpipe_header devlink_dpipe_header_ipv6 = { | |
77 | .name = "ipv6", | |
78 | .id = DEVLINK_DPIPE_HEADER_IPV6, | |
79 | .fields = devlink_dpipe_fields_ipv6, | |
80 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6), | |
81 | .global = true, | |
82 | }; | |
83 | EXPORT_SYMBOL(devlink_dpipe_header_ipv6); | |
84 | ||
e5224f0f | 85 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg); |
57186a5f | 86 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr); |
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 }, | |
90 | }; | |
91 | ||
bfcd3a46 JP |
92 | static LIST_HEAD(devlink_list); |
93 | ||
94 | /* devlink_mutex | |
95 | * | |
96 | * An overall lock guarding every operation coming from userspace. | |
97 | * It also guards devlink devices list and it is taken when | |
98 | * driver registers/unregisters it. | |
99 | */ | |
100 | static DEFINE_MUTEX(devlink_mutex); | |
101 | ||
471f894f | 102 | struct net *devlink_net(const struct devlink *devlink) |
bfcd3a46 JP |
103 | { |
104 | return read_pnet(&devlink->_net); | |
105 | } | |
471f894f | 106 | EXPORT_SYMBOL_GPL(devlink_net); |
bfcd3a46 | 107 | |
8273fd84 | 108 | static void __devlink_net_set(struct devlink *devlink, struct net *net) |
bfcd3a46 JP |
109 | { |
110 | write_pnet(&devlink->_net, net); | |
111 | } | |
112 | ||
8273fd84 JP |
113 | void devlink_net_set(struct devlink *devlink, struct net *net) |
114 | { | |
115 | if (WARN_ON(devlink->registered)) | |
116 | return; | |
117 | __devlink_net_set(devlink, net); | |
118 | } | |
119 | EXPORT_SYMBOL_GPL(devlink_net_set); | |
120 | ||
bfcd3a46 JP |
121 | static struct devlink *devlink_get_from_attrs(struct net *net, |
122 | struct nlattr **attrs) | |
123 | { | |
124 | struct devlink *devlink; | |
125 | char *busname; | |
126 | char *devname; | |
127 | ||
128 | if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME]) | |
129 | return ERR_PTR(-EINVAL); | |
130 | ||
131 | busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]); | |
132 | devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]); | |
133 | ||
dac7c08f PP |
134 | lockdep_assert_held(&devlink_mutex); |
135 | ||
bfcd3a46 JP |
136 | list_for_each_entry(devlink, &devlink_list, list) { |
137 | if (strcmp(devlink->dev->bus->name, busname) == 0 && | |
138 | strcmp(dev_name(devlink->dev), devname) == 0 && | |
139 | net_eq(devlink_net(devlink), net)) | |
140 | return devlink; | |
141 | } | |
142 | ||
143 | return ERR_PTR(-ENODEV); | |
144 | } | |
145 | ||
146 | static struct devlink *devlink_get_from_info(struct genl_info *info) | |
147 | { | |
148 | return devlink_get_from_attrs(genl_info_net(info), info->attrs); | |
149 | } | |
150 | ||
151 | static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink, | |
c7282b50 | 152 | unsigned int port_index) |
bfcd3a46 JP |
153 | { |
154 | struct devlink_port *devlink_port; | |
155 | ||
156 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
157 | if (devlink_port->index == port_index) | |
158 | return devlink_port; | |
159 | } | |
160 | return NULL; | |
161 | } | |
162 | ||
c7282b50 PP |
163 | static bool devlink_port_index_exists(struct devlink *devlink, |
164 | unsigned int port_index) | |
bfcd3a46 JP |
165 | { |
166 | return devlink_port_get_by_index(devlink, port_index); | |
167 | } | |
168 | ||
169 | static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink, | |
170 | struct nlattr **attrs) | |
171 | { | |
172 | if (attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
173 | u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); | |
174 | struct devlink_port *devlink_port; | |
175 | ||
176 | devlink_port = devlink_port_get_by_index(devlink, port_index); | |
177 | if (!devlink_port) | |
178 | return ERR_PTR(-ENODEV); | |
179 | return devlink_port; | |
180 | } | |
181 | return ERR_PTR(-EINVAL); | |
182 | } | |
183 | ||
184 | static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink, | |
185 | struct genl_info *info) | |
186 | { | |
187 | return devlink_port_get_from_attrs(devlink, info->attrs); | |
188 | } | |
189 | ||
bf797471 JP |
190 | struct devlink_sb { |
191 | struct list_head list; | |
192 | unsigned int index; | |
193 | u32 size; | |
194 | u16 ingress_pools_count; | |
195 | u16 egress_pools_count; | |
196 | u16 ingress_tc_count; | |
197 | u16 egress_tc_count; | |
198 | }; | |
199 | ||
200 | static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb) | |
201 | { | |
202 | return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count; | |
203 | } | |
204 | ||
205 | static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink, | |
206 | unsigned int sb_index) | |
207 | { | |
208 | struct devlink_sb *devlink_sb; | |
209 | ||
210 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { | |
211 | if (devlink_sb->index == sb_index) | |
212 | return devlink_sb; | |
213 | } | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | static bool devlink_sb_index_exists(struct devlink *devlink, | |
218 | unsigned int sb_index) | |
219 | { | |
220 | return devlink_sb_get_by_index(devlink, sb_index); | |
221 | } | |
222 | ||
223 | static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink, | |
224 | struct nlattr **attrs) | |
225 | { | |
226 | if (attrs[DEVLINK_ATTR_SB_INDEX]) { | |
227 | u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]); | |
228 | struct devlink_sb *devlink_sb; | |
229 | ||
230 | devlink_sb = devlink_sb_get_by_index(devlink, sb_index); | |
231 | if (!devlink_sb) | |
232 | return ERR_PTR(-ENODEV); | |
233 | return devlink_sb; | |
234 | } | |
235 | return ERR_PTR(-EINVAL); | |
236 | } | |
237 | ||
238 | static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink, | |
239 | struct genl_info *info) | |
240 | { | |
241 | return devlink_sb_get_from_attrs(devlink, info->attrs); | |
242 | } | |
243 | ||
244 | static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb, | |
245 | struct nlattr **attrs, | |
246 | u16 *p_pool_index) | |
247 | { | |
248 | u16 val; | |
249 | ||
250 | if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX]) | |
251 | return -EINVAL; | |
252 | ||
253 | val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]); | |
254 | if (val >= devlink_sb_pool_count(devlink_sb)) | |
255 | return -EINVAL; | |
256 | *p_pool_index = val; | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb, | |
261 | struct genl_info *info, | |
262 | u16 *p_pool_index) | |
263 | { | |
264 | return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs, | |
265 | p_pool_index); | |
266 | } | |
267 | ||
268 | static int | |
269 | devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs, | |
270 | enum devlink_sb_pool_type *p_pool_type) | |
271 | { | |
272 | u8 val; | |
273 | ||
274 | if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE]) | |
275 | return -EINVAL; | |
276 | ||
277 | val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]); | |
278 | if (val != DEVLINK_SB_POOL_TYPE_INGRESS && | |
279 | val != DEVLINK_SB_POOL_TYPE_EGRESS) | |
280 | return -EINVAL; | |
281 | *p_pool_type = val; | |
282 | return 0; | |
283 | } | |
284 | ||
285 | static int | |
286 | devlink_sb_pool_type_get_from_info(struct genl_info *info, | |
287 | enum devlink_sb_pool_type *p_pool_type) | |
288 | { | |
289 | return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type); | |
290 | } | |
291 | ||
292 | static int | |
293 | devlink_sb_th_type_get_from_attrs(struct nlattr **attrs, | |
294 | enum devlink_sb_threshold_type *p_th_type) | |
295 | { | |
296 | u8 val; | |
297 | ||
298 | if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]) | |
299 | return -EINVAL; | |
300 | ||
301 | val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]); | |
302 | if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC && | |
303 | val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC) | |
304 | return -EINVAL; | |
305 | *p_th_type = val; | |
306 | return 0; | |
307 | } | |
308 | ||
309 | static int | |
310 | devlink_sb_th_type_get_from_info(struct genl_info *info, | |
311 | enum devlink_sb_threshold_type *p_th_type) | |
312 | { | |
313 | return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type); | |
314 | } | |
315 | ||
316 | static int | |
317 | devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb, | |
318 | struct nlattr **attrs, | |
319 | enum devlink_sb_pool_type pool_type, | |
320 | u16 *p_tc_index) | |
321 | { | |
322 | u16 val; | |
323 | ||
324 | if (!attrs[DEVLINK_ATTR_SB_TC_INDEX]) | |
325 | return -EINVAL; | |
326 | ||
327 | val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]); | |
328 | if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS && | |
329 | val >= devlink_sb->ingress_tc_count) | |
330 | return -EINVAL; | |
331 | if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS && | |
332 | val >= devlink_sb->egress_tc_count) | |
333 | return -EINVAL; | |
334 | *p_tc_index = val; | |
335 | return 0; | |
336 | } | |
337 | ||
338 | static int | |
339 | devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb, | |
340 | struct genl_info *info, | |
341 | enum devlink_sb_pool_type pool_type, | |
342 | u16 *p_tc_index) | |
343 | { | |
344 | return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs, | |
345 | pool_type, p_tc_index); | |
346 | } | |
347 | ||
b16ebe92 AV |
348 | struct devlink_region { |
349 | struct devlink *devlink; | |
350 | struct list_head list; | |
e8937681 | 351 | const struct devlink_region_ops *ops; |
b16ebe92 AV |
352 | struct list_head snapshot_list; |
353 | u32 max_snapshots; | |
354 | u32 cur_snapshots; | |
355 | u64 size; | |
356 | }; | |
357 | ||
d7e52722 AV |
358 | struct devlink_snapshot { |
359 | struct list_head list; | |
360 | struct devlink_region *region; | |
d7e52722 AV |
361 | u8 *data; |
362 | u32 id; | |
363 | }; | |
364 | ||
b16ebe92 AV |
365 | static struct devlink_region * |
366 | devlink_region_get_by_name(struct devlink *devlink, const char *region_name) | |
367 | { | |
368 | struct devlink_region *region; | |
369 | ||
370 | list_for_each_entry(region, &devlink->region_list, list) | |
e8937681 | 371 | if (!strcmp(region->ops->name, region_name)) |
b16ebe92 AV |
372 | return region; |
373 | ||
374 | return NULL; | |
375 | } | |
376 | ||
d7e52722 AV |
377 | static struct devlink_snapshot * |
378 | devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) | |
379 | { | |
380 | struct devlink_snapshot *snapshot; | |
381 | ||
382 | list_for_each_entry(snapshot, ®ion->snapshot_list, list) | |
383 | if (snapshot->id == id) | |
384 | return snapshot; | |
385 | ||
386 | return NULL; | |
387 | } | |
388 | ||
637989b5 PP |
389 | #define DEVLINK_NL_FLAG_NEED_PORT BIT(0) |
390 | #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1) | |
2406e7e5 AS |
391 | |
392 | /* The per devlink instance lock is taken by default in the pre-doit | |
393 | * operation, yet several commands do not require this. The global | |
394 | * devlink lock is taken and protects from disruption by user-calls. | |
395 | */ | |
637989b5 | 396 | #define DEVLINK_NL_FLAG_NO_LOCK BIT(2) |
bfcd3a46 JP |
397 | |
398 | static int devlink_nl_pre_doit(const struct genl_ops *ops, | |
399 | struct sk_buff *skb, struct genl_info *info) | |
400 | { | |
f4f54166 | 401 | struct devlink_port *devlink_port; |
bfcd3a46 | 402 | struct devlink *devlink; |
2406e7e5 | 403 | int err; |
bfcd3a46 JP |
404 | |
405 | mutex_lock(&devlink_mutex); | |
406 | devlink = devlink_get_from_info(info); | |
407 | if (IS_ERR(devlink)) { | |
408 | mutex_unlock(&devlink_mutex); | |
409 | return PTR_ERR(devlink); | |
410 | } | |
2406e7e5 AS |
411 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) |
412 | mutex_lock(&devlink->lock); | |
637989b5 PP |
413 | info->user_ptr[0] = devlink; |
414 | if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) { | |
bfcd3a46 JP |
415 | devlink_port = devlink_port_get_from_info(devlink, info); |
416 | if (IS_ERR(devlink_port)) { | |
2406e7e5 AS |
417 | err = PTR_ERR(devlink_port); |
418 | goto unlock; | |
bfcd3a46 | 419 | } |
637989b5 | 420 | info->user_ptr[1] = devlink_port; |
f4f54166 | 421 | } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) { |
f4f54166 VT |
422 | devlink_port = devlink_port_get_from_info(devlink, info); |
423 | if (!IS_ERR(devlink_port)) | |
424 | info->user_ptr[1] = devlink_port; | |
bfcd3a46 JP |
425 | } |
426 | return 0; | |
2406e7e5 AS |
427 | |
428 | unlock: | |
429 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) | |
430 | mutex_unlock(&devlink->lock); | |
431 | mutex_unlock(&devlink_mutex); | |
432 | return err; | |
bfcd3a46 JP |
433 | } |
434 | ||
435 | static void devlink_nl_post_doit(const struct genl_ops *ops, | |
436 | struct sk_buff *skb, struct genl_info *info) | |
437 | { | |
2406e7e5 AS |
438 | struct devlink *devlink; |
439 | ||
637989b5 PP |
440 | devlink = info->user_ptr[0]; |
441 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) | |
2406e7e5 | 442 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
443 | mutex_unlock(&devlink_mutex); |
444 | } | |
445 | ||
489111e5 | 446 | static struct genl_family devlink_nl_family; |
bfcd3a46 JP |
447 | |
448 | enum devlink_multicast_groups { | |
449 | DEVLINK_MCGRP_CONFIG, | |
450 | }; | |
451 | ||
452 | static const struct genl_multicast_group devlink_nl_mcgrps[] = { | |
453 | [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME }, | |
454 | }; | |
455 | ||
456 | static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink) | |
457 | { | |
458 | if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name)) | |
459 | return -EMSGSIZE; | |
460 | if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev))) | |
461 | return -EMSGSIZE; | |
462 | return 0; | |
463 | } | |
464 | ||
465 | static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink, | |
466 | enum devlink_command cmd, u32 portid, | |
467 | u32 seq, int flags) | |
468 | { | |
469 | void *hdr; | |
470 | ||
471 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
472 | if (!hdr) | |
473 | return -EMSGSIZE; | |
474 | ||
475 | if (devlink_nl_put_handle(msg, devlink)) | |
476 | goto nla_put_failure; | |
2670ac26 JP |
477 | if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed)) |
478 | goto nla_put_failure; | |
bfcd3a46 JP |
479 | |
480 | genlmsg_end(msg, hdr); | |
481 | return 0; | |
482 | ||
483 | nla_put_failure: | |
484 | genlmsg_cancel(msg, hdr); | |
485 | return -EMSGSIZE; | |
486 | } | |
487 | ||
488 | static void devlink_notify(struct devlink *devlink, enum devlink_command cmd) | |
489 | { | |
490 | struct sk_buff *msg; | |
491 | int err; | |
492 | ||
493 | WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL); | |
494 | ||
495 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
496 | if (!msg) | |
497 | return; | |
498 | ||
499 | err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0); | |
500 | if (err) { | |
501 | nlmsg_free(msg); | |
502 | return; | |
503 | } | |
504 | ||
505 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
506 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
507 | } | |
508 | ||
b9ffcbaf JP |
509 | static int devlink_nl_port_attrs_put(struct sk_buff *msg, |
510 | struct devlink_port *devlink_port) | |
511 | { | |
512 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
513 | ||
10a429ba | 514 | if (!devlink_port->attrs_set) |
b9ffcbaf | 515 | return 0; |
a21cf0a8 DR |
516 | if (attrs->lanes) { |
517 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes)) | |
518 | return -EMSGSIZE; | |
519 | } | |
a0f49b54 DR |
520 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable)) |
521 | return -EMSGSIZE; | |
5ec1380a JP |
522 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour)) |
523 | return -EMSGSIZE; | |
58b6be41 PP |
524 | switch (devlink_port->attrs.flavour) { |
525 | case DEVLINK_PORT_FLAVOUR_PCI_PF: | |
3a2d9588 PP |
526 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
527 | attrs->pci_pf.controller) || | |
528 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf)) | |
98fd2d65 | 529 | return -EMSGSIZE; |
05b595e9 PP |
530 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external)) |
531 | return -EMSGSIZE; | |
58b6be41 PP |
532 | break; |
533 | case DEVLINK_PORT_FLAVOUR_PCI_VF: | |
3a2d9588 PP |
534 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
535 | attrs->pci_vf.controller) || | |
536 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) || | |
537 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf)) | |
e41b6bf3 | 538 | return -EMSGSIZE; |
05b595e9 PP |
539 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external)) |
540 | return -EMSGSIZE; | |
58b6be41 PP |
541 | break; |
542 | case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
543 | case DEVLINK_PORT_FLAVOUR_CPU: | |
544 | case DEVLINK_PORT_FLAVOUR_DSA: | |
acf1ee44 | 545 | case DEVLINK_PORT_FLAVOUR_VIRTUAL: |
58b6be41 PP |
546 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, |
547 | attrs->phys.port_number)) | |
548 | return -EMSGSIZE; | |
549 | if (!attrs->split) | |
550 | return 0; | |
551 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, | |
552 | attrs->phys.port_number)) | |
553 | return -EMSGSIZE; | |
554 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER, | |
555 | attrs->phys.split_subport_number)) | |
556 | return -EMSGSIZE; | |
557 | break; | |
558 | default: | |
559 | break; | |
98fd2d65 | 560 | } |
b9ffcbaf JP |
561 | return 0; |
562 | } | |
563 | ||
2a916ecc PP |
564 | static int |
565 | devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port, | |
566 | struct netlink_ext_ack *extack) | |
567 | { | |
568 | struct devlink *devlink = port->devlink; | |
569 | const struct devlink_ops *ops; | |
570 | struct nlattr *function_attr; | |
571 | bool empty_nest = true; | |
572 | int err = 0; | |
573 | ||
574 | function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION); | |
575 | if (!function_attr) | |
576 | return -EMSGSIZE; | |
577 | ||
578 | ops = devlink->ops; | |
579 | if (ops->port_function_hw_addr_get) { | |
29cb9868 | 580 | int hw_addr_len; |
2a916ecc PP |
581 | u8 hw_addr[MAX_ADDR_LEN]; |
582 | ||
583 | err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack); | |
584 | if (err == -EOPNOTSUPP) { | |
585 | /* Port function attributes are optional for a port. If port doesn't | |
586 | * support function attribute, returning -EOPNOTSUPP is not an error. | |
587 | */ | |
588 | err = 0; | |
589 | goto out; | |
590 | } else if (err) { | |
591 | goto out; | |
592 | } | |
593 | err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr); | |
594 | if (err) | |
595 | goto out; | |
596 | empty_nest = false; | |
597 | } | |
598 | ||
599 | out: | |
600 | if (err || empty_nest) | |
601 | nla_nest_cancel(msg, function_attr); | |
602 | else | |
603 | nla_nest_end(msg, function_attr); | |
604 | return err; | |
605 | } | |
606 | ||
bfcd3a46 JP |
607 | static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink, |
608 | struct devlink_port *devlink_port, | |
609 | enum devlink_command cmd, u32 portid, | |
a829eb0d PP |
610 | u32 seq, int flags, |
611 | struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
612 | { |
613 | void *hdr; | |
614 | ||
615 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
616 | if (!hdr) | |
617 | return -EMSGSIZE; | |
618 | ||
619 | if (devlink_nl_put_handle(msg, devlink)) | |
620 | goto nla_put_failure; | |
621 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
622 | goto nla_put_failure; | |
b8f97554 | 623 | |
0f420b6c | 624 | spin_lock_bh(&devlink_port->type_lock); |
bfcd3a46 | 625 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type)) |
b8f97554 | 626 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
627 | if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET && |
628 | nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE, | |
629 | devlink_port->desired_type)) | |
b8f97554 | 630 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
631 | if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) { |
632 | struct net_device *netdev = devlink_port->type_dev; | |
633 | ||
634 | if (netdev && | |
635 | (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX, | |
636 | netdev->ifindex) || | |
637 | nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME, | |
638 | netdev->name))) | |
b8f97554 | 639 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
640 | } |
641 | if (devlink_port->type == DEVLINK_PORT_TYPE_IB) { | |
642 | struct ib_device *ibdev = devlink_port->type_dev; | |
643 | ||
644 | if (ibdev && | |
645 | nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME, | |
646 | ibdev->name)) | |
b8f97554 | 647 | goto nla_put_failure_type_locked; |
bfcd3a46 | 648 | } |
0f420b6c | 649 | spin_unlock_bh(&devlink_port->type_lock); |
b9ffcbaf | 650 | if (devlink_nl_port_attrs_put(msg, devlink_port)) |
bfcd3a46 | 651 | goto nla_put_failure; |
2a916ecc PP |
652 | if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack)) |
653 | goto nla_put_failure; | |
bfcd3a46 JP |
654 | |
655 | genlmsg_end(msg, hdr); | |
656 | return 0; | |
657 | ||
b8f97554 | 658 | nla_put_failure_type_locked: |
0f420b6c | 659 | spin_unlock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
660 | nla_put_failure: |
661 | genlmsg_cancel(msg, hdr); | |
662 | return -EMSGSIZE; | |
663 | } | |
664 | ||
665 | static void devlink_port_notify(struct devlink_port *devlink_port, | |
666 | enum devlink_command cmd) | |
667 | { | |
668 | struct devlink *devlink = devlink_port->devlink; | |
669 | struct sk_buff *msg; | |
670 | int err; | |
671 | ||
672 | if (!devlink_port->registered) | |
673 | return; | |
674 | ||
675 | WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL); | |
676 | ||
677 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
678 | if (!msg) | |
679 | return; | |
680 | ||
a829eb0d PP |
681 | err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0, |
682 | NULL); | |
bfcd3a46 JP |
683 | if (err) { |
684 | nlmsg_free(msg); | |
685 | return; | |
686 | } | |
687 | ||
688 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
689 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
690 | } | |
691 | ||
692 | static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info) | |
693 | { | |
694 | struct devlink *devlink = info->user_ptr[0]; | |
695 | struct sk_buff *msg; | |
696 | int err; | |
697 | ||
698 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
699 | if (!msg) | |
700 | return -ENOMEM; | |
701 | ||
702 | err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, | |
703 | info->snd_portid, info->snd_seq, 0); | |
704 | if (err) { | |
705 | nlmsg_free(msg); | |
706 | return err; | |
707 | } | |
708 | ||
709 | return genlmsg_reply(msg, info); | |
710 | } | |
711 | ||
712 | static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg, | |
713 | struct netlink_callback *cb) | |
714 | { | |
715 | struct devlink *devlink; | |
716 | int start = cb->args[0]; | |
717 | int idx = 0; | |
718 | int err; | |
719 | ||
720 | mutex_lock(&devlink_mutex); | |
721 | list_for_each_entry(devlink, &devlink_list, list) { | |
722 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
723 | continue; | |
724 | if (idx < start) { | |
725 | idx++; | |
726 | continue; | |
727 | } | |
728 | err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, | |
729 | NETLINK_CB(cb->skb).portid, | |
730 | cb->nlh->nlmsg_seq, NLM_F_MULTI); | |
731 | if (err) | |
732 | goto out; | |
733 | idx++; | |
734 | } | |
735 | out: | |
736 | mutex_unlock(&devlink_mutex); | |
737 | ||
738 | cb->args[0] = idx; | |
739 | return msg->len; | |
740 | } | |
741 | ||
742 | static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb, | |
743 | struct genl_info *info) | |
744 | { | |
637989b5 | 745 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1fc2257e | 746 | struct devlink *devlink = devlink_port->devlink; |
bfcd3a46 JP |
747 | struct sk_buff *msg; |
748 | int err; | |
749 | ||
750 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
751 | if (!msg) | |
752 | return -ENOMEM; | |
753 | ||
754 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
755 | DEVLINK_CMD_PORT_NEW, | |
a829eb0d PP |
756 | info->snd_portid, info->snd_seq, 0, |
757 | info->extack); | |
bfcd3a46 JP |
758 | if (err) { |
759 | nlmsg_free(msg); | |
760 | return err; | |
761 | } | |
762 | ||
763 | return genlmsg_reply(msg, info); | |
764 | } | |
765 | ||
766 | static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg, | |
767 | struct netlink_callback *cb) | |
768 | { | |
769 | struct devlink *devlink; | |
770 | struct devlink_port *devlink_port; | |
771 | int start = cb->args[0]; | |
772 | int idx = 0; | |
773 | int err; | |
774 | ||
775 | mutex_lock(&devlink_mutex); | |
bfcd3a46 JP |
776 | list_for_each_entry(devlink, &devlink_list, list) { |
777 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
778 | continue; | |
2406e7e5 | 779 | mutex_lock(&devlink->lock); |
bfcd3a46 JP |
780 | list_for_each_entry(devlink_port, &devlink->port_list, list) { |
781 | if (idx < start) { | |
782 | idx++; | |
783 | continue; | |
784 | } | |
785 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
786 | DEVLINK_CMD_NEW, | |
787 | NETLINK_CB(cb->skb).portid, | |
788 | cb->nlh->nlmsg_seq, | |
a829eb0d PP |
789 | NLM_F_MULTI, |
790 | cb->extack); | |
2406e7e5 AS |
791 | if (err) { |
792 | mutex_unlock(&devlink->lock); | |
bfcd3a46 | 793 | goto out; |
2406e7e5 | 794 | } |
bfcd3a46 JP |
795 | idx++; |
796 | } | |
2406e7e5 | 797 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
798 | } |
799 | out: | |
bfcd3a46 JP |
800 | mutex_unlock(&devlink_mutex); |
801 | ||
802 | cb->args[0] = idx; | |
803 | return msg->len; | |
804 | } | |
805 | ||
806 | static int devlink_port_type_set(struct devlink *devlink, | |
807 | struct devlink_port *devlink_port, | |
808 | enum devlink_port_type port_type) | |
809 | ||
810 | { | |
811 | int err; | |
812 | ||
be6fe1d8 | 813 | if (devlink->ops->port_type_set) { |
bfcd3a46 JP |
814 | if (port_type == DEVLINK_PORT_TYPE_NOTSET) |
815 | return -EINVAL; | |
6edf1017 ER |
816 | if (port_type == devlink_port->type) |
817 | return 0; | |
bfcd3a46 JP |
818 | err = devlink->ops->port_type_set(devlink_port, port_type); |
819 | if (err) | |
820 | return err; | |
821 | devlink_port->desired_type = port_type; | |
822 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
823 | return 0; | |
824 | } | |
825 | return -EOPNOTSUPP; | |
826 | } | |
827 | ||
a1e8ae90 PP |
828 | static int |
829 | devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port, | |
830 | const struct nlattr *attr, struct netlink_ext_ack *extack) | |
831 | { | |
832 | const struct devlink_ops *ops; | |
833 | const u8 *hw_addr; | |
834 | int hw_addr_len; | |
835 | int err; | |
836 | ||
837 | hw_addr = nla_data(attr); | |
838 | hw_addr_len = nla_len(attr); | |
839 | if (hw_addr_len > MAX_ADDR_LEN) { | |
840 | NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long"); | |
841 | return -EINVAL; | |
842 | } | |
843 | if (port->type == DEVLINK_PORT_TYPE_ETH) { | |
844 | if (hw_addr_len != ETH_ALEN) { | |
845 | NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device"); | |
846 | return -EINVAL; | |
847 | } | |
848 | if (!is_unicast_ether_addr(hw_addr)) { | |
849 | NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported"); | |
850 | return -EINVAL; | |
851 | } | |
852 | } | |
853 | ||
854 | ops = devlink->ops; | |
855 | if (!ops->port_function_hw_addr_set) { | |
856 | NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes"); | |
857 | return -EOPNOTSUPP; | |
858 | } | |
859 | ||
860 | err = ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack); | |
861 | if (err) | |
862 | return err; | |
863 | ||
864 | devlink_port_notify(port, DEVLINK_CMD_PORT_NEW); | |
865 | return 0; | |
866 | } | |
867 | ||
868 | static int | |
869 | devlink_port_function_set(struct devlink *devlink, struct devlink_port *port, | |
870 | const struct nlattr *attr, struct netlink_ext_ack *extack) | |
871 | { | |
872 | struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1]; | |
873 | int err; | |
874 | ||
875 | err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr, | |
876 | devlink_function_nl_policy, extack); | |
877 | if (err < 0) { | |
878 | NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes"); | |
879 | return err; | |
880 | } | |
881 | ||
882 | attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR]; | |
883 | if (attr) | |
884 | err = devlink_port_function_hw_addr_set(devlink, port, attr, extack); | |
885 | ||
886 | return err; | |
887 | } | |
888 | ||
bfcd3a46 JP |
889 | static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb, |
890 | struct genl_info *info) | |
891 | { | |
637989b5 | 892 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1fc2257e | 893 | struct devlink *devlink = devlink_port->devlink; |
bfcd3a46 JP |
894 | int err; |
895 | ||
896 | if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) { | |
897 | enum devlink_port_type port_type; | |
898 | ||
899 | port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]); | |
900 | err = devlink_port_type_set(devlink, devlink_port, port_type); | |
901 | if (err) | |
902 | return err; | |
903 | } | |
a1e8ae90 PP |
904 | |
905 | if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) { | |
906 | struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION]; | |
907 | struct netlink_ext_ack *extack = info->extack; | |
908 | ||
909 | err = devlink_port_function_set(devlink, devlink_port, attr, extack); | |
910 | if (err) | |
911 | return err; | |
912 | } | |
913 | ||
bfcd3a46 JP |
914 | return 0; |
915 | } | |
916 | ||
ac0fc8a1 DA |
917 | static int devlink_port_split(struct devlink *devlink, u32 port_index, |
918 | u32 count, struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
919 | |
920 | { | |
be6fe1d8 | 921 | if (devlink->ops->port_split) |
ac0fc8a1 DA |
922 | return devlink->ops->port_split(devlink, port_index, count, |
923 | extack); | |
bfcd3a46 JP |
924 | return -EOPNOTSUPP; |
925 | } | |
926 | ||
927 | static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb, | |
928 | struct genl_info *info) | |
929 | { | |
930 | struct devlink *devlink = info->user_ptr[0]; | |
82901ad1 | 931 | struct devlink_port *devlink_port; |
bfcd3a46 JP |
932 | u32 port_index; |
933 | u32 count; | |
934 | ||
935 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] || | |
936 | !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]) | |
937 | return -EINVAL; | |
938 | ||
82901ad1 | 939 | devlink_port = devlink_port_get_from_info(devlink, info); |
bfcd3a46 JP |
940 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); |
941 | count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]); | |
82901ad1 DR |
942 | |
943 | if (IS_ERR(devlink_port)) | |
944 | return -EINVAL; | |
945 | ||
946 | if (!devlink_port->attrs.splittable) { | |
947 | /* Split ports cannot be split. */ | |
948 | if (devlink_port->attrs.split) | |
949 | NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further"); | |
950 | else | |
951 | NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split"); | |
952 | return -EINVAL; | |
953 | } | |
954 | ||
955 | if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) { | |
956 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count"); | |
957 | return -EINVAL; | |
958 | } | |
959 | ||
ac0fc8a1 | 960 | return devlink_port_split(devlink, port_index, count, info->extack); |
bfcd3a46 JP |
961 | } |
962 | ||
ac0fc8a1 DA |
963 | static int devlink_port_unsplit(struct devlink *devlink, u32 port_index, |
964 | struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
965 | |
966 | { | |
be6fe1d8 | 967 | if (devlink->ops->port_unsplit) |
ac0fc8a1 | 968 | return devlink->ops->port_unsplit(devlink, port_index, extack); |
bfcd3a46 JP |
969 | return -EOPNOTSUPP; |
970 | } | |
971 | ||
972 | static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb, | |
973 | struct genl_info *info) | |
974 | { | |
975 | struct devlink *devlink = info->user_ptr[0]; | |
976 | u32 port_index; | |
977 | ||
978 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) | |
979 | return -EINVAL; | |
980 | ||
981 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
ac0fc8a1 | 982 | return devlink_port_unsplit(devlink, port_index, info->extack); |
bfcd3a46 JP |
983 | } |
984 | ||
bf797471 JP |
985 | static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink, |
986 | struct devlink_sb *devlink_sb, | |
987 | enum devlink_command cmd, u32 portid, | |
988 | u32 seq, int flags) | |
989 | { | |
990 | void *hdr; | |
991 | ||
992 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
993 | if (!hdr) | |
994 | return -EMSGSIZE; | |
995 | ||
996 | if (devlink_nl_put_handle(msg, devlink)) | |
997 | goto nla_put_failure; | |
998 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
999 | goto nla_put_failure; | |
1000 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size)) | |
1001 | goto nla_put_failure; | |
1002 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT, | |
1003 | devlink_sb->ingress_pools_count)) | |
1004 | goto nla_put_failure; | |
1005 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT, | |
1006 | devlink_sb->egress_pools_count)) | |
1007 | goto nla_put_failure; | |
1008 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT, | |
1009 | devlink_sb->ingress_tc_count)) | |
1010 | goto nla_put_failure; | |
1011 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT, | |
1012 | devlink_sb->egress_tc_count)) | |
1013 | goto nla_put_failure; | |
1014 | ||
1015 | genlmsg_end(msg, hdr); | |
1016 | return 0; | |
1017 | ||
1018 | nla_put_failure: | |
1019 | genlmsg_cancel(msg, hdr); | |
1020 | return -EMSGSIZE; | |
1021 | } | |
1022 | ||
1023 | static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb, | |
1024 | struct genl_info *info) | |
1025 | { | |
1026 | struct devlink *devlink = info->user_ptr[0]; | |
637989b5 | 1027 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1028 | struct sk_buff *msg; |
1029 | int err; | |
1030 | ||
637989b5 PP |
1031 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1032 | if (IS_ERR(devlink_sb)) | |
1033 | return PTR_ERR(devlink_sb); | |
1034 | ||
bf797471 JP |
1035 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1036 | if (!msg) | |
1037 | return -ENOMEM; | |
1038 | ||
1039 | err = devlink_nl_sb_fill(msg, devlink, devlink_sb, | |
1040 | DEVLINK_CMD_SB_NEW, | |
1041 | info->snd_portid, info->snd_seq, 0); | |
1042 | if (err) { | |
1043 | nlmsg_free(msg); | |
1044 | return err; | |
1045 | } | |
1046 | ||
1047 | return genlmsg_reply(msg, info); | |
1048 | } | |
1049 | ||
1050 | static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg, | |
1051 | struct netlink_callback *cb) | |
1052 | { | |
1053 | struct devlink *devlink; | |
1054 | struct devlink_sb *devlink_sb; | |
1055 | int start = cb->args[0]; | |
1056 | int idx = 0; | |
1057 | int err; | |
1058 | ||
1059 | mutex_lock(&devlink_mutex); | |
1060 | list_for_each_entry(devlink, &devlink_list, list) { | |
1061 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
1062 | continue; | |
2406e7e5 | 1063 | mutex_lock(&devlink->lock); |
bf797471 JP |
1064 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1065 | if (idx < start) { | |
1066 | idx++; | |
1067 | continue; | |
1068 | } | |
1069 | err = devlink_nl_sb_fill(msg, devlink, devlink_sb, | |
1070 | DEVLINK_CMD_SB_NEW, | |
1071 | NETLINK_CB(cb->skb).portid, | |
1072 | cb->nlh->nlmsg_seq, | |
1073 | NLM_F_MULTI); | |
2406e7e5 AS |
1074 | if (err) { |
1075 | mutex_unlock(&devlink->lock); | |
bf797471 | 1076 | goto out; |
2406e7e5 | 1077 | } |
bf797471 JP |
1078 | idx++; |
1079 | } | |
2406e7e5 | 1080 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1081 | } |
1082 | out: | |
1083 | mutex_unlock(&devlink_mutex); | |
1084 | ||
1085 | cb->args[0] = idx; | |
1086 | return msg->len; | |
1087 | } | |
1088 | ||
1089 | static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink, | |
1090 | struct devlink_sb *devlink_sb, | |
1091 | u16 pool_index, enum devlink_command cmd, | |
1092 | u32 portid, u32 seq, int flags) | |
1093 | { | |
1094 | struct devlink_sb_pool_info pool_info; | |
1095 | void *hdr; | |
1096 | int err; | |
1097 | ||
1098 | err = devlink->ops->sb_pool_get(devlink, devlink_sb->index, | |
1099 | pool_index, &pool_info); | |
1100 | if (err) | |
1101 | return err; | |
1102 | ||
1103 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1104 | if (!hdr) | |
1105 | return -EMSGSIZE; | |
1106 | ||
1107 | if (devlink_nl_put_handle(msg, devlink)) | |
1108 | goto nla_put_failure; | |
1109 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1110 | goto nla_put_failure; | |
1111 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1112 | goto nla_put_failure; | |
1113 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type)) | |
1114 | goto nla_put_failure; | |
1115 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size)) | |
1116 | goto nla_put_failure; | |
1117 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE, | |
1118 | pool_info.threshold_type)) | |
1119 | goto nla_put_failure; | |
bff5731d JK |
1120 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE, |
1121 | pool_info.cell_size)) | |
1122 | goto nla_put_failure; | |
bf797471 JP |
1123 | |
1124 | genlmsg_end(msg, hdr); | |
1125 | return 0; | |
1126 | ||
1127 | nla_put_failure: | |
1128 | genlmsg_cancel(msg, hdr); | |
1129 | return -EMSGSIZE; | |
1130 | } | |
1131 | ||
1132 | static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb, | |
1133 | struct genl_info *info) | |
1134 | { | |
1135 | struct devlink *devlink = info->user_ptr[0]; | |
637989b5 | 1136 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1137 | struct sk_buff *msg; |
1138 | u16 pool_index; | |
1139 | int err; | |
1140 | ||
637989b5 PP |
1141 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1142 | if (IS_ERR(devlink_sb)) | |
1143 | return PTR_ERR(devlink_sb); | |
1144 | ||
bf797471 JP |
1145 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1146 | &pool_index); | |
1147 | if (err) | |
1148 | return err; | |
1149 | ||
be6fe1d8 | 1150 | if (!devlink->ops->sb_pool_get) |
bf797471 JP |
1151 | return -EOPNOTSUPP; |
1152 | ||
1153 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1154 | if (!msg) | |
1155 | return -ENOMEM; | |
1156 | ||
1157 | err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index, | |
1158 | DEVLINK_CMD_SB_POOL_NEW, | |
1159 | info->snd_portid, info->snd_seq, 0); | |
1160 | if (err) { | |
1161 | nlmsg_free(msg); | |
1162 | return err; | |
1163 | } | |
1164 | ||
1165 | return genlmsg_reply(msg, info); | |
1166 | } | |
1167 | ||
1168 | static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, | |
1169 | struct devlink *devlink, | |
1170 | struct devlink_sb *devlink_sb, | |
1171 | u32 portid, u32 seq) | |
1172 | { | |
1173 | u16 pool_count = devlink_sb_pool_count(devlink_sb); | |
1174 | u16 pool_index; | |
1175 | int err; | |
1176 | ||
1177 | for (pool_index = 0; pool_index < pool_count; pool_index++) { | |
1178 | if (*p_idx < start) { | |
1179 | (*p_idx)++; | |
1180 | continue; | |
1181 | } | |
1182 | err = devlink_nl_sb_pool_fill(msg, devlink, | |
1183 | devlink_sb, | |
1184 | pool_index, | |
1185 | DEVLINK_CMD_SB_POOL_NEW, | |
1186 | portid, seq, NLM_F_MULTI); | |
1187 | if (err) | |
1188 | return err; | |
1189 | (*p_idx)++; | |
1190 | } | |
1191 | return 0; | |
1192 | } | |
1193 | ||
1194 | static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg, | |
1195 | struct netlink_callback *cb) | |
1196 | { | |
1197 | struct devlink *devlink; | |
1198 | struct devlink_sb *devlink_sb; | |
1199 | int start = cb->args[0]; | |
1200 | int idx = 0; | |
c62c2cfb | 1201 | int err = 0; |
bf797471 JP |
1202 | |
1203 | mutex_lock(&devlink_mutex); | |
1204 | list_for_each_entry(devlink, &devlink_list, list) { | |
1205 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1206 | !devlink->ops->sb_pool_get) |
bf797471 | 1207 | continue; |
2406e7e5 | 1208 | mutex_lock(&devlink->lock); |
bf797471 JP |
1209 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1210 | err = __sb_pool_get_dumpit(msg, start, &idx, devlink, | |
1211 | devlink_sb, | |
1212 | NETLINK_CB(cb->skb).portid, | |
1213 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1214 | if (err == -EOPNOTSUPP) { |
1215 | err = 0; | |
1216 | } else if (err) { | |
2406e7e5 | 1217 | mutex_unlock(&devlink->lock); |
bf797471 | 1218 | goto out; |
2406e7e5 | 1219 | } |
bf797471 | 1220 | } |
2406e7e5 | 1221 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1222 | } |
1223 | out: | |
1224 | mutex_unlock(&devlink_mutex); | |
1225 | ||
c62c2cfb JP |
1226 | if (err != -EMSGSIZE) |
1227 | return err; | |
1228 | ||
bf797471 JP |
1229 | cb->args[0] = idx; |
1230 | return msg->len; | |
1231 | } | |
1232 | ||
1233 | static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index, | |
1234 | u16 pool_index, u32 size, | |
f2ad1a52 IS |
1235 | enum devlink_sb_threshold_type threshold_type, |
1236 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1237 | |
1238 | { | |
1239 | const struct devlink_ops *ops = devlink->ops; | |
1240 | ||
be6fe1d8 | 1241 | if (ops->sb_pool_set) |
bf797471 | 1242 | return ops->sb_pool_set(devlink, sb_index, pool_index, |
f2ad1a52 | 1243 | size, threshold_type, extack); |
bf797471 JP |
1244 | return -EOPNOTSUPP; |
1245 | } | |
1246 | ||
1247 | static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb, | |
1248 | struct genl_info *info) | |
1249 | { | |
1250 | struct devlink *devlink = info->user_ptr[0]; | |
bf797471 | 1251 | enum devlink_sb_threshold_type threshold_type; |
637989b5 | 1252 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1253 | u16 pool_index; |
1254 | u32 size; | |
1255 | int err; | |
1256 | ||
637989b5 PP |
1257 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1258 | if (IS_ERR(devlink_sb)) | |
1259 | return PTR_ERR(devlink_sb); | |
1260 | ||
bf797471 JP |
1261 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1262 | &pool_index); | |
1263 | if (err) | |
1264 | return err; | |
1265 | ||
1266 | err = devlink_sb_th_type_get_from_info(info, &threshold_type); | |
1267 | if (err) | |
1268 | return err; | |
1269 | ||
1270 | if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]) | |
1271 | return -EINVAL; | |
1272 | ||
1273 | size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]); | |
1274 | return devlink_sb_pool_set(devlink, devlink_sb->index, | |
f2ad1a52 IS |
1275 | pool_index, size, threshold_type, |
1276 | info->extack); | |
bf797471 JP |
1277 | } |
1278 | ||
1279 | static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg, | |
1280 | struct devlink *devlink, | |
1281 | struct devlink_port *devlink_port, | |
1282 | struct devlink_sb *devlink_sb, | |
1283 | u16 pool_index, | |
1284 | enum devlink_command cmd, | |
1285 | u32 portid, u32 seq, int flags) | |
1286 | { | |
df38dafd | 1287 | const struct devlink_ops *ops = devlink->ops; |
bf797471 JP |
1288 | u32 threshold; |
1289 | void *hdr; | |
1290 | int err; | |
1291 | ||
df38dafd JP |
1292 | err = ops->sb_port_pool_get(devlink_port, devlink_sb->index, |
1293 | pool_index, &threshold); | |
bf797471 JP |
1294 | if (err) |
1295 | return err; | |
1296 | ||
1297 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1298 | if (!hdr) | |
1299 | return -EMSGSIZE; | |
1300 | ||
1301 | if (devlink_nl_put_handle(msg, devlink)) | |
1302 | goto nla_put_failure; | |
1303 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
1304 | goto nla_put_failure; | |
1305 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1306 | goto nla_put_failure; | |
1307 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1308 | goto nla_put_failure; | |
1309 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) | |
1310 | goto nla_put_failure; | |
1311 | ||
df38dafd JP |
1312 | if (ops->sb_occ_port_pool_get) { |
1313 | u32 cur; | |
1314 | u32 max; | |
1315 | ||
1316 | err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index, | |
1317 | pool_index, &cur, &max); | |
1318 | if (err && err != -EOPNOTSUPP) | |
1319 | return err; | |
1320 | if (!err) { | |
1321 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) | |
1322 | goto nla_put_failure; | |
1323 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) | |
1324 | goto nla_put_failure; | |
1325 | } | |
1326 | } | |
1327 | ||
bf797471 JP |
1328 | genlmsg_end(msg, hdr); |
1329 | return 0; | |
1330 | ||
1331 | nla_put_failure: | |
1332 | genlmsg_cancel(msg, hdr); | |
1333 | return -EMSGSIZE; | |
1334 | } | |
1335 | ||
1336 | static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb, | |
1337 | struct genl_info *info) | |
1338 | { | |
637989b5 | 1339 | struct devlink_port *devlink_port = info->user_ptr[1]; |
bf797471 | 1340 | struct devlink *devlink = devlink_port->devlink; |
637989b5 | 1341 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1342 | struct sk_buff *msg; |
1343 | u16 pool_index; | |
1344 | int err; | |
1345 | ||
637989b5 PP |
1346 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1347 | if (IS_ERR(devlink_sb)) | |
1348 | return PTR_ERR(devlink_sb); | |
1349 | ||
bf797471 JP |
1350 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1351 | &pool_index); | |
1352 | if (err) | |
1353 | return err; | |
1354 | ||
be6fe1d8 | 1355 | if (!devlink->ops->sb_port_pool_get) |
bf797471 JP |
1356 | return -EOPNOTSUPP; |
1357 | ||
1358 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1359 | if (!msg) | |
1360 | return -ENOMEM; | |
1361 | ||
1362 | err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port, | |
1363 | devlink_sb, pool_index, | |
1364 | DEVLINK_CMD_SB_PORT_POOL_NEW, | |
1365 | info->snd_portid, info->snd_seq, 0); | |
1366 | if (err) { | |
1367 | nlmsg_free(msg); | |
1368 | return err; | |
1369 | } | |
1370 | ||
1371 | return genlmsg_reply(msg, info); | |
1372 | } | |
1373 | ||
1374 | static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, | |
1375 | struct devlink *devlink, | |
1376 | struct devlink_sb *devlink_sb, | |
1377 | u32 portid, u32 seq) | |
1378 | { | |
1379 | struct devlink_port *devlink_port; | |
1380 | u16 pool_count = devlink_sb_pool_count(devlink_sb); | |
1381 | u16 pool_index; | |
1382 | int err; | |
1383 | ||
1384 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
1385 | for (pool_index = 0; pool_index < pool_count; pool_index++) { | |
1386 | if (*p_idx < start) { | |
1387 | (*p_idx)++; | |
1388 | continue; | |
1389 | } | |
1390 | err = devlink_nl_sb_port_pool_fill(msg, devlink, | |
1391 | devlink_port, | |
1392 | devlink_sb, | |
1393 | pool_index, | |
1394 | DEVLINK_CMD_SB_PORT_POOL_NEW, | |
1395 | portid, seq, | |
1396 | NLM_F_MULTI); | |
1397 | if (err) | |
1398 | return err; | |
1399 | (*p_idx)++; | |
1400 | } | |
1401 | } | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg, | |
1406 | struct netlink_callback *cb) | |
1407 | { | |
1408 | struct devlink *devlink; | |
1409 | struct devlink_sb *devlink_sb; | |
1410 | int start = cb->args[0]; | |
1411 | int idx = 0; | |
c62c2cfb | 1412 | int err = 0; |
bf797471 JP |
1413 | |
1414 | mutex_lock(&devlink_mutex); | |
bf797471 JP |
1415 | list_for_each_entry(devlink, &devlink_list, list) { |
1416 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1417 | !devlink->ops->sb_port_pool_get) |
bf797471 | 1418 | continue; |
2406e7e5 | 1419 | mutex_lock(&devlink->lock); |
bf797471 JP |
1420 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1421 | err = __sb_port_pool_get_dumpit(msg, start, &idx, | |
1422 | devlink, devlink_sb, | |
1423 | NETLINK_CB(cb->skb).portid, | |
1424 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1425 | if (err == -EOPNOTSUPP) { |
1426 | err = 0; | |
1427 | } else if (err) { | |
2406e7e5 | 1428 | mutex_unlock(&devlink->lock); |
bf797471 | 1429 | goto out; |
2406e7e5 | 1430 | } |
bf797471 | 1431 | } |
2406e7e5 | 1432 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1433 | } |
1434 | out: | |
bf797471 JP |
1435 | mutex_unlock(&devlink_mutex); |
1436 | ||
c62c2cfb JP |
1437 | if (err != -EMSGSIZE) |
1438 | return err; | |
1439 | ||
bf797471 JP |
1440 | cb->args[0] = idx; |
1441 | return msg->len; | |
1442 | } | |
1443 | ||
1444 | static int devlink_sb_port_pool_set(struct devlink_port *devlink_port, | |
1445 | unsigned int sb_index, u16 pool_index, | |
f2ad1a52 IS |
1446 | u32 threshold, |
1447 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1448 | |
1449 | { | |
1450 | const struct devlink_ops *ops = devlink_port->devlink->ops; | |
1451 | ||
be6fe1d8 | 1452 | if (ops->sb_port_pool_set) |
bf797471 | 1453 | return ops->sb_port_pool_set(devlink_port, sb_index, |
f2ad1a52 | 1454 | pool_index, threshold, extack); |
bf797471 JP |
1455 | return -EOPNOTSUPP; |
1456 | } | |
1457 | ||
1458 | static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb, | |
1459 | struct genl_info *info) | |
1460 | { | |
637989b5 PP |
1461 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1462 | struct devlink *devlink = info->user_ptr[0]; | |
1463 | struct devlink_sb *devlink_sb; | |
bf797471 JP |
1464 | u16 pool_index; |
1465 | u32 threshold; | |
1466 | int err; | |
1467 | ||
637989b5 PP |
1468 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1469 | if (IS_ERR(devlink_sb)) | |
1470 | return PTR_ERR(devlink_sb); | |
1471 | ||
bf797471 JP |
1472 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1473 | &pool_index); | |
1474 | if (err) | |
1475 | return err; | |
1476 | ||
1477 | if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) | |
1478 | return -EINVAL; | |
1479 | ||
1480 | threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); | |
1481 | return devlink_sb_port_pool_set(devlink_port, devlink_sb->index, | |
f2ad1a52 | 1482 | pool_index, threshold, info->extack); |
bf797471 JP |
1483 | } |
1484 | ||
1485 | static int | |
1486 | devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink, | |
1487 | struct devlink_port *devlink_port, | |
1488 | struct devlink_sb *devlink_sb, u16 tc_index, | |
1489 | enum devlink_sb_pool_type pool_type, | |
1490 | enum devlink_command cmd, | |
1491 | u32 portid, u32 seq, int flags) | |
1492 | { | |
df38dafd | 1493 | const struct devlink_ops *ops = devlink->ops; |
bf797471 JP |
1494 | u16 pool_index; |
1495 | u32 threshold; | |
1496 | void *hdr; | |
1497 | int err; | |
1498 | ||
df38dafd JP |
1499 | err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index, |
1500 | tc_index, pool_type, | |
1501 | &pool_index, &threshold); | |
bf797471 JP |
1502 | if (err) |
1503 | return err; | |
1504 | ||
1505 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1506 | if (!hdr) | |
1507 | return -EMSGSIZE; | |
1508 | ||
1509 | if (devlink_nl_put_handle(msg, devlink)) | |
1510 | goto nla_put_failure; | |
1511 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
1512 | goto nla_put_failure; | |
1513 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1514 | goto nla_put_failure; | |
1515 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index)) | |
1516 | goto nla_put_failure; | |
1517 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type)) | |
1518 | goto nla_put_failure; | |
1519 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1520 | goto nla_put_failure; | |
1521 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) | |
1522 | goto nla_put_failure; | |
1523 | ||
df38dafd JP |
1524 | if (ops->sb_occ_tc_port_bind_get) { |
1525 | u32 cur; | |
1526 | u32 max; | |
1527 | ||
1528 | err = ops->sb_occ_tc_port_bind_get(devlink_port, | |
1529 | devlink_sb->index, | |
1530 | tc_index, pool_type, | |
1531 | &cur, &max); | |
1532 | if (err && err != -EOPNOTSUPP) | |
1533 | return err; | |
1534 | if (!err) { | |
1535 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) | |
1536 | goto nla_put_failure; | |
1537 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) | |
1538 | goto nla_put_failure; | |
1539 | } | |
1540 | } | |
1541 | ||
bf797471 JP |
1542 | genlmsg_end(msg, hdr); |
1543 | return 0; | |
1544 | ||
1545 | nla_put_failure: | |
1546 | genlmsg_cancel(msg, hdr); | |
1547 | return -EMSGSIZE; | |
1548 | } | |
1549 | ||
1550 | static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb, | |
1551 | struct genl_info *info) | |
1552 | { | |
637989b5 | 1553 | struct devlink_port *devlink_port = info->user_ptr[1]; |
bf797471 | 1554 | struct devlink *devlink = devlink_port->devlink; |
637989b5 | 1555 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1556 | struct sk_buff *msg; |
1557 | enum devlink_sb_pool_type pool_type; | |
1558 | u16 tc_index; | |
1559 | int err; | |
1560 | ||
637989b5 PP |
1561 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1562 | if (IS_ERR(devlink_sb)) | |
1563 | return PTR_ERR(devlink_sb); | |
1564 | ||
bf797471 JP |
1565 | err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
1566 | if (err) | |
1567 | return err; | |
1568 | ||
1569 | err = devlink_sb_tc_index_get_from_info(devlink_sb, info, | |
1570 | pool_type, &tc_index); | |
1571 | if (err) | |
1572 | return err; | |
1573 | ||
be6fe1d8 | 1574 | if (!devlink->ops->sb_tc_pool_bind_get) |
bf797471 JP |
1575 | return -EOPNOTSUPP; |
1576 | ||
1577 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1578 | if (!msg) | |
1579 | return -ENOMEM; | |
1580 | ||
1581 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port, | |
1582 | devlink_sb, tc_index, pool_type, | |
1583 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1584 | info->snd_portid, | |
1585 | info->snd_seq, 0); | |
1586 | if (err) { | |
1587 | nlmsg_free(msg); | |
1588 | return err; | |
1589 | } | |
1590 | ||
1591 | return genlmsg_reply(msg, info); | |
1592 | } | |
1593 | ||
1594 | static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, | |
1595 | int start, int *p_idx, | |
1596 | struct devlink *devlink, | |
1597 | struct devlink_sb *devlink_sb, | |
1598 | u32 portid, u32 seq) | |
1599 | { | |
1600 | struct devlink_port *devlink_port; | |
1601 | u16 tc_index; | |
1602 | int err; | |
1603 | ||
1604 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
1605 | for (tc_index = 0; | |
1606 | tc_index < devlink_sb->ingress_tc_count; tc_index++) { | |
1607 | if (*p_idx < start) { | |
1608 | (*p_idx)++; | |
1609 | continue; | |
1610 | } | |
1611 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, | |
1612 | devlink_port, | |
1613 | devlink_sb, | |
1614 | tc_index, | |
1615 | DEVLINK_SB_POOL_TYPE_INGRESS, | |
1616 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1617 | portid, seq, | |
1618 | NLM_F_MULTI); | |
1619 | if (err) | |
1620 | return err; | |
1621 | (*p_idx)++; | |
1622 | } | |
1623 | for (tc_index = 0; | |
1624 | tc_index < devlink_sb->egress_tc_count; tc_index++) { | |
1625 | if (*p_idx < start) { | |
1626 | (*p_idx)++; | |
1627 | continue; | |
1628 | } | |
1629 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, | |
1630 | devlink_port, | |
1631 | devlink_sb, | |
1632 | tc_index, | |
1633 | DEVLINK_SB_POOL_TYPE_EGRESS, | |
1634 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1635 | portid, seq, | |
1636 | NLM_F_MULTI); | |
1637 | if (err) | |
1638 | return err; | |
1639 | (*p_idx)++; | |
1640 | } | |
1641 | } | |
1642 | return 0; | |
1643 | } | |
1644 | ||
1645 | static int | |
1646 | devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, | |
1647 | struct netlink_callback *cb) | |
1648 | { | |
1649 | struct devlink *devlink; | |
1650 | struct devlink_sb *devlink_sb; | |
1651 | int start = cb->args[0]; | |
1652 | int idx = 0; | |
c62c2cfb | 1653 | int err = 0; |
bf797471 JP |
1654 | |
1655 | mutex_lock(&devlink_mutex); | |
bf797471 JP |
1656 | list_for_each_entry(devlink, &devlink_list, list) { |
1657 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1658 | !devlink->ops->sb_tc_pool_bind_get) |
bf797471 | 1659 | continue; |
2406e7e5 AS |
1660 | |
1661 | mutex_lock(&devlink->lock); | |
bf797471 JP |
1662 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1663 | err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx, | |
1664 | devlink, | |
1665 | devlink_sb, | |
1666 | NETLINK_CB(cb->skb).portid, | |
1667 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1668 | if (err == -EOPNOTSUPP) { |
1669 | err = 0; | |
1670 | } else if (err) { | |
2406e7e5 | 1671 | mutex_unlock(&devlink->lock); |
bf797471 | 1672 | goto out; |
2406e7e5 | 1673 | } |
bf797471 | 1674 | } |
2406e7e5 | 1675 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1676 | } |
1677 | out: | |
bf797471 JP |
1678 | mutex_unlock(&devlink_mutex); |
1679 | ||
c62c2cfb JP |
1680 | if (err != -EMSGSIZE) |
1681 | return err; | |
1682 | ||
bf797471 JP |
1683 | cb->args[0] = idx; |
1684 | return msg->len; | |
1685 | } | |
1686 | ||
1687 | static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port, | |
1688 | unsigned int sb_index, u16 tc_index, | |
1689 | enum devlink_sb_pool_type pool_type, | |
f2ad1a52 IS |
1690 | u16 pool_index, u32 threshold, |
1691 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1692 | |
1693 | { | |
1694 | const struct devlink_ops *ops = devlink_port->devlink->ops; | |
1695 | ||
be6fe1d8 | 1696 | if (ops->sb_tc_pool_bind_set) |
bf797471 JP |
1697 | return ops->sb_tc_pool_bind_set(devlink_port, sb_index, |
1698 | tc_index, pool_type, | |
f2ad1a52 | 1699 | pool_index, threshold, extack); |
bf797471 JP |
1700 | return -EOPNOTSUPP; |
1701 | } | |
1702 | ||
1703 | static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb, | |
1704 | struct genl_info *info) | |
1705 | { | |
637989b5 PP |
1706 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1707 | struct devlink *devlink = info->user_ptr[0]; | |
bf797471 | 1708 | enum devlink_sb_pool_type pool_type; |
637989b5 | 1709 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1710 | u16 tc_index; |
1711 | u16 pool_index; | |
1712 | u32 threshold; | |
1713 | int err; | |
1714 | ||
637989b5 PP |
1715 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1716 | if (IS_ERR(devlink_sb)) | |
1717 | return PTR_ERR(devlink_sb); | |
1718 | ||
bf797471 JP |
1719 | err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
1720 | if (err) | |
1721 | return err; | |
1722 | ||
1723 | err = devlink_sb_tc_index_get_from_info(devlink_sb, info, | |
1724 | pool_type, &tc_index); | |
1725 | if (err) | |
1726 | return err; | |
1727 | ||
1728 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, | |
1729 | &pool_index); | |
1730 | if (err) | |
1731 | return err; | |
1732 | ||
1733 | if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) | |
1734 | return -EINVAL; | |
1735 | ||
1736 | threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); | |
1737 | return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index, | |
1738 | tc_index, pool_type, | |
f2ad1a52 | 1739 | pool_index, threshold, info->extack); |
bf797471 JP |
1740 | } |
1741 | ||
df38dafd JP |
1742 | static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb, |
1743 | struct genl_info *info) | |
1744 | { | |
1745 | struct devlink *devlink = info->user_ptr[0]; | |
df38dafd | 1746 | const struct devlink_ops *ops = devlink->ops; |
637989b5 PP |
1747 | struct devlink_sb *devlink_sb; |
1748 | ||
1749 | devlink_sb = devlink_sb_get_from_info(devlink, info); | |
1750 | if (IS_ERR(devlink_sb)) | |
1751 | return PTR_ERR(devlink_sb); | |
df38dafd | 1752 | |
be6fe1d8 | 1753 | if (ops->sb_occ_snapshot) |
df38dafd JP |
1754 | return ops->sb_occ_snapshot(devlink, devlink_sb->index); |
1755 | return -EOPNOTSUPP; | |
1756 | } | |
1757 | ||
1758 | static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb, | |
1759 | struct genl_info *info) | |
1760 | { | |
1761 | struct devlink *devlink = info->user_ptr[0]; | |
df38dafd | 1762 | const struct devlink_ops *ops = devlink->ops; |
637989b5 PP |
1763 | struct devlink_sb *devlink_sb; |
1764 | ||
1765 | devlink_sb = devlink_sb_get_from_info(devlink, info); | |
1766 | if (IS_ERR(devlink_sb)) | |
1767 | return PTR_ERR(devlink_sb); | |
df38dafd | 1768 | |
be6fe1d8 | 1769 | if (ops->sb_occ_max_clear) |
df38dafd JP |
1770 | return ops->sb_occ_max_clear(devlink, devlink_sb->index); |
1771 | return -EOPNOTSUPP; | |
1772 | } | |
1773 | ||
21e3d2dd JP |
1774 | static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink, |
1775 | enum devlink_command cmd, u32 portid, | |
1776 | u32 seq, int flags) | |
08f4b591 | 1777 | { |
59bfde01 | 1778 | const struct devlink_ops *ops = devlink->ops; |
98fdbea5 LR |
1779 | enum devlink_eswitch_encap_mode encap_mode; |
1780 | u8 inline_mode; | |
08f4b591 | 1781 | void *hdr; |
59bfde01 RD |
1782 | int err = 0; |
1783 | u16 mode; | |
08f4b591 OG |
1784 | |
1785 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1786 | if (!hdr) | |
1787 | return -EMSGSIZE; | |
1788 | ||
59bfde01 RD |
1789 | err = devlink_nl_put_handle(msg, devlink); |
1790 | if (err) | |
1a6aa36b | 1791 | goto nla_put_failure; |
08f4b591 | 1792 | |
4456f61c JP |
1793 | if (ops->eswitch_mode_get) { |
1794 | err = ops->eswitch_mode_get(devlink, &mode); | |
1795 | if (err) | |
1796 | goto nla_put_failure; | |
1797 | err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode); | |
1798 | if (err) | |
1799 | goto nla_put_failure; | |
1800 | } | |
59bfde01 RD |
1801 | |
1802 | if (ops->eswitch_inline_mode_get) { | |
1803 | err = ops->eswitch_inline_mode_get(devlink, &inline_mode); | |
1804 | if (err) | |
1a6aa36b | 1805 | goto nla_put_failure; |
59bfde01 RD |
1806 | err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE, |
1807 | inline_mode); | |
1808 | if (err) | |
1a6aa36b | 1809 | goto nla_put_failure; |
59bfde01 | 1810 | } |
08f4b591 | 1811 | |
f43e9b06 RD |
1812 | if (ops->eswitch_encap_mode_get) { |
1813 | err = ops->eswitch_encap_mode_get(devlink, &encap_mode); | |
1814 | if (err) | |
1815 | goto nla_put_failure; | |
1816 | err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode); | |
1817 | if (err) | |
1818 | goto nla_put_failure; | |
1819 | } | |
1820 | ||
08f4b591 OG |
1821 | genlmsg_end(msg, hdr); |
1822 | return 0; | |
1823 | ||
1a6aa36b | 1824 | nla_put_failure: |
08f4b591 | 1825 | genlmsg_cancel(msg, hdr); |
59bfde01 | 1826 | return err; |
08f4b591 OG |
1827 | } |
1828 | ||
adf200f3 JP |
1829 | static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb, |
1830 | struct genl_info *info) | |
08f4b591 OG |
1831 | { |
1832 | struct devlink *devlink = info->user_ptr[0]; | |
08f4b591 | 1833 | struct sk_buff *msg; |
08f4b591 OG |
1834 | int err; |
1835 | ||
08f4b591 OG |
1836 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1837 | if (!msg) | |
1838 | return -ENOMEM; | |
1839 | ||
21e3d2dd JP |
1840 | err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET, |
1841 | info->snd_portid, info->snd_seq, 0); | |
08f4b591 OG |
1842 | |
1843 | if (err) { | |
1844 | nlmsg_free(msg); | |
1845 | return err; | |
1846 | } | |
1847 | ||
1848 | return genlmsg_reply(msg, info); | |
1849 | } | |
1850 | ||
adf200f3 JP |
1851 | static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb, |
1852 | struct genl_info *info) | |
08f4b591 OG |
1853 | { |
1854 | struct devlink *devlink = info->user_ptr[0]; | |
1855 | const struct devlink_ops *ops = devlink->ops; | |
98fdbea5 LR |
1856 | enum devlink_eswitch_encap_mode encap_mode; |
1857 | u8 inline_mode; | |
59bfde01 | 1858 | int err = 0; |
f43e9b06 | 1859 | u16 mode; |
08f4b591 | 1860 | |
59bfde01 RD |
1861 | if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) { |
1862 | if (!ops->eswitch_mode_set) | |
1863 | return -EOPNOTSUPP; | |
1864 | mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]); | |
db7ff19e | 1865 | err = ops->eswitch_mode_set(devlink, mode, info->extack); |
59bfde01 RD |
1866 | if (err) |
1867 | return err; | |
1868 | } | |
08f4b591 | 1869 | |
59bfde01 RD |
1870 | if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) { |
1871 | if (!ops->eswitch_inline_mode_set) | |
1872 | return -EOPNOTSUPP; | |
1873 | inline_mode = nla_get_u8( | |
1874 | info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]); | |
db7ff19e EB |
1875 | err = ops->eswitch_inline_mode_set(devlink, inline_mode, |
1876 | info->extack); | |
59bfde01 RD |
1877 | if (err) |
1878 | return err; | |
1879 | } | |
f43e9b06 RD |
1880 | |
1881 | if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) { | |
1882 | if (!ops->eswitch_encap_mode_set) | |
1883 | return -EOPNOTSUPP; | |
1884 | encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]); | |
db7ff19e EB |
1885 | err = ops->eswitch_encap_mode_set(devlink, encap_mode, |
1886 | info->extack); | |
f43e9b06 RD |
1887 | if (err) |
1888 | return err; | |
1889 | } | |
1890 | ||
1555d204 AS |
1891 | return 0; |
1892 | } | |
1893 | ||
1894 | int devlink_dpipe_match_put(struct sk_buff *skb, | |
1895 | struct devlink_dpipe_match *match) | |
1896 | { | |
1897 | struct devlink_dpipe_header *header = match->header; | |
1898 | struct devlink_dpipe_field *field = &header->fields[match->field_id]; | |
1899 | struct nlattr *match_attr; | |
1900 | ||
ae0be8de | 1901 | match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH); |
1555d204 AS |
1902 | if (!match_attr) |
1903 | return -EMSGSIZE; | |
1904 | ||
1905 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) || | |
1906 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) || | |
1907 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
1908 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
1909 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
1910 | goto nla_put_failure; | |
1911 | ||
1912 | nla_nest_end(skb, match_attr); | |
1913 | return 0; | |
1914 | ||
1915 | nla_put_failure: | |
1916 | nla_nest_cancel(skb, match_attr); | |
1917 | return -EMSGSIZE; | |
1918 | } | |
1919 | EXPORT_SYMBOL_GPL(devlink_dpipe_match_put); | |
1920 | ||
1921 | static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table, | |
1922 | struct sk_buff *skb) | |
1923 | { | |
1924 | struct nlattr *matches_attr; | |
1925 | ||
ae0be8de MK |
1926 | matches_attr = nla_nest_start_noflag(skb, |
1927 | DEVLINK_ATTR_DPIPE_TABLE_MATCHES); | |
1555d204 AS |
1928 | if (!matches_attr) |
1929 | return -EMSGSIZE; | |
1930 | ||
1931 | if (table->table_ops->matches_dump(table->priv, skb)) | |
1932 | goto nla_put_failure; | |
1933 | ||
1934 | nla_nest_end(skb, matches_attr); | |
1935 | return 0; | |
1936 | ||
1937 | nla_put_failure: | |
1938 | nla_nest_cancel(skb, matches_attr); | |
1939 | return -EMSGSIZE; | |
1940 | } | |
1941 | ||
1942 | int devlink_dpipe_action_put(struct sk_buff *skb, | |
1943 | struct devlink_dpipe_action *action) | |
1944 | { | |
1945 | struct devlink_dpipe_header *header = action->header; | |
1946 | struct devlink_dpipe_field *field = &header->fields[action->field_id]; | |
1947 | struct nlattr *action_attr; | |
1948 | ||
ae0be8de | 1949 | action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION); |
1555d204 AS |
1950 | if (!action_attr) |
1951 | return -EMSGSIZE; | |
1952 | ||
1953 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) || | |
1954 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) || | |
1955 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
1956 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
1957 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
1958 | goto nla_put_failure; | |
1959 | ||
1960 | nla_nest_end(skb, action_attr); | |
1961 | return 0; | |
1962 | ||
1963 | nla_put_failure: | |
1964 | nla_nest_cancel(skb, action_attr); | |
1965 | return -EMSGSIZE; | |
1966 | } | |
1967 | EXPORT_SYMBOL_GPL(devlink_dpipe_action_put); | |
1968 | ||
1969 | static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table, | |
1970 | struct sk_buff *skb) | |
1971 | { | |
1972 | struct nlattr *actions_attr; | |
1973 | ||
ae0be8de MK |
1974 | actions_attr = nla_nest_start_noflag(skb, |
1975 | DEVLINK_ATTR_DPIPE_TABLE_ACTIONS); | |
1555d204 AS |
1976 | if (!actions_attr) |
1977 | return -EMSGSIZE; | |
1978 | ||
1979 | if (table->table_ops->actions_dump(table->priv, skb)) | |
1980 | goto nla_put_failure; | |
1981 | ||
1982 | nla_nest_end(skb, actions_attr); | |
1983 | return 0; | |
1984 | ||
1985 | nla_put_failure: | |
1986 | nla_nest_cancel(skb, actions_attr); | |
1987 | return -EMSGSIZE; | |
1988 | } | |
1989 | ||
1990 | static int devlink_dpipe_table_put(struct sk_buff *skb, | |
1991 | struct devlink_dpipe_table *table) | |
1992 | { | |
1993 | struct nlattr *table_attr; | |
ffd3cdcc | 1994 | u64 table_size; |
1555d204 | 1995 | |
ffd3cdcc | 1996 | table_size = table->table_ops->size_get(table->priv); |
ae0be8de | 1997 | table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE); |
1555d204 AS |
1998 | if (!table_attr) |
1999 | return -EMSGSIZE; | |
2000 | ||
2001 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) || | |
ffd3cdcc | 2002 | nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size, |
1555d204 AS |
2003 | DEVLINK_ATTR_PAD)) |
2004 | goto nla_put_failure; | |
2005 | if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED, | |
2006 | table->counters_enabled)) | |
2007 | goto nla_put_failure; | |
2008 | ||
56dc7cd0 | 2009 | if (table->resource_valid) { |
3d18e4f1 AS |
2010 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID, |
2011 | table->resource_id, DEVLINK_ATTR_PAD) || | |
2012 | nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS, | |
2013 | table->resource_units, DEVLINK_ATTR_PAD)) | |
2014 | goto nla_put_failure; | |
56dc7cd0 | 2015 | } |
1555d204 AS |
2016 | if (devlink_dpipe_matches_put(table, skb)) |
2017 | goto nla_put_failure; | |
2018 | ||
2019 | if (devlink_dpipe_actions_put(table, skb)) | |
2020 | goto nla_put_failure; | |
2021 | ||
2022 | nla_nest_end(skb, table_attr); | |
2023 | return 0; | |
2024 | ||
2025 | nla_put_failure: | |
2026 | nla_nest_cancel(skb, table_attr); | |
2027 | return -EMSGSIZE; | |
2028 | } | |
2029 | ||
2030 | static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb, | |
2031 | struct genl_info *info) | |
2032 | { | |
2033 | int err; | |
2034 | ||
2035 | if (*pskb) { | |
2036 | err = genlmsg_reply(*pskb, info); | |
2037 | if (err) | |
2038 | return err; | |
2039 | } | |
2040 | *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2041 | if (!*pskb) | |
2042 | return -ENOMEM; | |
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | static int devlink_dpipe_tables_fill(struct genl_info *info, | |
2047 | enum devlink_command cmd, int flags, | |
2048 | struct list_head *dpipe_tables, | |
2049 | const char *table_name) | |
2050 | { | |
2051 | struct devlink *devlink = info->user_ptr[0]; | |
2052 | struct devlink_dpipe_table *table; | |
2053 | struct nlattr *tables_attr; | |
2054 | struct sk_buff *skb = NULL; | |
2055 | struct nlmsghdr *nlh; | |
2056 | bool incomplete; | |
2057 | void *hdr; | |
2058 | int i; | |
2059 | int err; | |
2060 | ||
2061 | table = list_first_entry(dpipe_tables, | |
2062 | struct devlink_dpipe_table, list); | |
2063 | start_again: | |
2064 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2065 | if (err) | |
2066 | return err; | |
2067 | ||
2068 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2069 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
6044bd4a HY |
2070 | if (!hdr) { |
2071 | nlmsg_free(skb); | |
1555d204 | 2072 | return -EMSGSIZE; |
6044bd4a | 2073 | } |
1555d204 AS |
2074 | |
2075 | if (devlink_nl_put_handle(skb, devlink)) | |
2076 | goto nla_put_failure; | |
ae0be8de | 2077 | tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES); |
1555d204 AS |
2078 | if (!tables_attr) |
2079 | goto nla_put_failure; | |
2080 | ||
2081 | i = 0; | |
2082 | incomplete = false; | |
2083 | list_for_each_entry_from(table, dpipe_tables, list) { | |
2084 | if (!table_name) { | |
2085 | err = devlink_dpipe_table_put(skb, table); | |
2086 | if (err) { | |
2087 | if (!i) | |
2088 | goto err_table_put; | |
2089 | incomplete = true; | |
2090 | break; | |
2091 | } | |
2092 | } else { | |
2093 | if (!strcmp(table->name, table_name)) { | |
2094 | err = devlink_dpipe_table_put(skb, table); | |
2095 | if (err) | |
2096 | break; | |
2097 | } | |
2098 | } | |
2099 | i++; | |
2100 | } | |
2101 | ||
2102 | nla_nest_end(skb, tables_attr); | |
2103 | genlmsg_end(skb, hdr); | |
2104 | if (incomplete) | |
2105 | goto start_again; | |
2106 | ||
2107 | send_done: | |
2108 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2109 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2110 | if (!nlh) { | |
2111 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2112 | if (err) | |
7fe4d6dc | 2113 | return err; |
1555d204 AS |
2114 | goto send_done; |
2115 | } | |
2116 | ||
2117 | return genlmsg_reply(skb, info); | |
2118 | ||
2119 | nla_put_failure: | |
2120 | err = -EMSGSIZE; | |
2121 | err_table_put: | |
1555d204 AS |
2122 | nlmsg_free(skb); |
2123 | return err; | |
2124 | } | |
2125 | ||
2126 | static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb, | |
2127 | struct genl_info *info) | |
2128 | { | |
2129 | struct devlink *devlink = info->user_ptr[0]; | |
2130 | const char *table_name = NULL; | |
2131 | ||
2132 | if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]) | |
2133 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2134 | ||
2135 | return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0, | |
2136 | &devlink->dpipe_table_list, | |
2137 | table_name); | |
2138 | } | |
2139 | ||
2140 | static int devlink_dpipe_value_put(struct sk_buff *skb, | |
2141 | struct devlink_dpipe_value *value) | |
2142 | { | |
2143 | if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE, | |
2144 | value->value_size, value->value)) | |
2145 | return -EMSGSIZE; | |
2146 | if (value->mask) | |
2147 | if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK, | |
2148 | value->value_size, value->mask)) | |
2149 | return -EMSGSIZE; | |
2150 | if (value->mapping_valid) | |
2151 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING, | |
2152 | value->mapping_value)) | |
2153 | return -EMSGSIZE; | |
2154 | return 0; | |
2155 | } | |
2156 | ||
2157 | static int devlink_dpipe_action_value_put(struct sk_buff *skb, | |
2158 | struct devlink_dpipe_value *value) | |
2159 | { | |
2160 | if (!value->action) | |
2161 | return -EINVAL; | |
2162 | if (devlink_dpipe_action_put(skb, value->action)) | |
2163 | return -EMSGSIZE; | |
2164 | if (devlink_dpipe_value_put(skb, value)) | |
2165 | return -EMSGSIZE; | |
2166 | return 0; | |
2167 | } | |
2168 | ||
2169 | static int devlink_dpipe_action_values_put(struct sk_buff *skb, | |
2170 | struct devlink_dpipe_value *values, | |
2171 | unsigned int values_count) | |
2172 | { | |
2173 | struct nlattr *action_attr; | |
2174 | int i; | |
2175 | int err; | |
2176 | ||
2177 | for (i = 0; i < values_count; i++) { | |
ae0be8de MK |
2178 | action_attr = nla_nest_start_noflag(skb, |
2179 | DEVLINK_ATTR_DPIPE_ACTION_VALUE); | |
1555d204 AS |
2180 | if (!action_attr) |
2181 | return -EMSGSIZE; | |
2182 | err = devlink_dpipe_action_value_put(skb, &values[i]); | |
2183 | if (err) | |
2184 | goto err_action_value_put; | |
2185 | nla_nest_end(skb, action_attr); | |
2186 | } | |
2187 | return 0; | |
2188 | ||
2189 | err_action_value_put: | |
2190 | nla_nest_cancel(skb, action_attr); | |
2191 | return err; | |
2192 | } | |
2193 | ||
2194 | static int devlink_dpipe_match_value_put(struct sk_buff *skb, | |
2195 | struct devlink_dpipe_value *value) | |
2196 | { | |
2197 | if (!value->match) | |
2198 | return -EINVAL; | |
2199 | if (devlink_dpipe_match_put(skb, value->match)) | |
2200 | return -EMSGSIZE; | |
2201 | if (devlink_dpipe_value_put(skb, value)) | |
2202 | return -EMSGSIZE; | |
2203 | return 0; | |
2204 | } | |
2205 | ||
2206 | static int devlink_dpipe_match_values_put(struct sk_buff *skb, | |
2207 | struct devlink_dpipe_value *values, | |
2208 | unsigned int values_count) | |
2209 | { | |
2210 | struct nlattr *match_attr; | |
2211 | int i; | |
2212 | int err; | |
2213 | ||
2214 | for (i = 0; i < values_count; i++) { | |
ae0be8de MK |
2215 | match_attr = nla_nest_start_noflag(skb, |
2216 | DEVLINK_ATTR_DPIPE_MATCH_VALUE); | |
1555d204 AS |
2217 | if (!match_attr) |
2218 | return -EMSGSIZE; | |
2219 | err = devlink_dpipe_match_value_put(skb, &values[i]); | |
2220 | if (err) | |
2221 | goto err_match_value_put; | |
2222 | nla_nest_end(skb, match_attr); | |
2223 | } | |
2224 | return 0; | |
2225 | ||
2226 | err_match_value_put: | |
2227 | nla_nest_cancel(skb, match_attr); | |
2228 | return err; | |
2229 | } | |
2230 | ||
2231 | static int devlink_dpipe_entry_put(struct sk_buff *skb, | |
2232 | struct devlink_dpipe_entry *entry) | |
2233 | { | |
2234 | struct nlattr *entry_attr, *matches_attr, *actions_attr; | |
2235 | int err; | |
2236 | ||
ae0be8de | 2237 | entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY); |
1555d204 AS |
2238 | if (!entry_attr) |
2239 | return -EMSGSIZE; | |
2240 | ||
2241 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index, | |
2242 | DEVLINK_ATTR_PAD)) | |
2243 | goto nla_put_failure; | |
2244 | if (entry->counter_valid) | |
2245 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER, | |
2246 | entry->counter, DEVLINK_ATTR_PAD)) | |
2247 | goto nla_put_failure; | |
2248 | ||
ae0be8de MK |
2249 | matches_attr = nla_nest_start_noflag(skb, |
2250 | DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES); | |
1555d204 AS |
2251 | if (!matches_attr) |
2252 | goto nla_put_failure; | |
2253 | ||
2254 | err = devlink_dpipe_match_values_put(skb, entry->match_values, | |
2255 | entry->match_values_count); | |
2256 | if (err) { | |
2257 | nla_nest_cancel(skb, matches_attr); | |
2258 | goto err_match_values_put; | |
2259 | } | |
2260 | nla_nest_end(skb, matches_attr); | |
2261 | ||
ae0be8de MK |
2262 | actions_attr = nla_nest_start_noflag(skb, |
2263 | DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES); | |
1555d204 AS |
2264 | if (!actions_attr) |
2265 | goto nla_put_failure; | |
2266 | ||
2267 | err = devlink_dpipe_action_values_put(skb, entry->action_values, | |
2268 | entry->action_values_count); | |
2269 | if (err) { | |
2270 | nla_nest_cancel(skb, actions_attr); | |
2271 | goto err_action_values_put; | |
2272 | } | |
2273 | nla_nest_end(skb, actions_attr); | |
59bfde01 | 2274 | |
1555d204 | 2275 | nla_nest_end(skb, entry_attr); |
59bfde01 | 2276 | return 0; |
1555d204 AS |
2277 | |
2278 | nla_put_failure: | |
2279 | err = -EMSGSIZE; | |
2280 | err_match_values_put: | |
2281 | err_action_values_put: | |
2282 | nla_nest_cancel(skb, entry_attr); | |
2283 | return err; | |
2284 | } | |
2285 | ||
2286 | static struct devlink_dpipe_table * | |
2287 | devlink_dpipe_table_find(struct list_head *dpipe_tables, | |
2eb51c75 | 2288 | const char *table_name, struct devlink *devlink) |
1555d204 AS |
2289 | { |
2290 | struct devlink_dpipe_table *table; | |
2eb51c75 MB |
2291 | list_for_each_entry_rcu(table, dpipe_tables, list, |
2292 | lockdep_is_held(&devlink->lock)) { | |
1555d204 AS |
2293 | if (!strcmp(table->name, table_name)) |
2294 | return table; | |
2295 | } | |
2296 | return NULL; | |
2297 | } | |
2298 | ||
2299 | int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx) | |
2300 | { | |
2301 | struct devlink *devlink; | |
2302 | int err; | |
2303 | ||
2304 | err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb, | |
2305 | dump_ctx->info); | |
2306 | if (err) | |
2307 | return err; | |
2308 | ||
2309 | dump_ctx->hdr = genlmsg_put(dump_ctx->skb, | |
2310 | dump_ctx->info->snd_portid, | |
2311 | dump_ctx->info->snd_seq, | |
2312 | &devlink_nl_family, NLM_F_MULTI, | |
2313 | dump_ctx->cmd); | |
2314 | if (!dump_ctx->hdr) | |
2315 | goto nla_put_failure; | |
2316 | ||
2317 | devlink = dump_ctx->info->user_ptr[0]; | |
2318 | if (devlink_nl_put_handle(dump_ctx->skb, devlink)) | |
2319 | goto nla_put_failure; | |
ae0be8de MK |
2320 | dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb, |
2321 | DEVLINK_ATTR_DPIPE_ENTRIES); | |
1555d204 AS |
2322 | if (!dump_ctx->nest) |
2323 | goto nla_put_failure; | |
2324 | return 0; | |
2325 | ||
2326 | nla_put_failure: | |
1555d204 AS |
2327 | nlmsg_free(dump_ctx->skb); |
2328 | return -EMSGSIZE; | |
2329 | } | |
2330 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare); | |
2331 | ||
2332 | int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx, | |
2333 | struct devlink_dpipe_entry *entry) | |
2334 | { | |
2335 | return devlink_dpipe_entry_put(dump_ctx->skb, entry); | |
2336 | } | |
2337 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append); | |
2338 | ||
2339 | int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx) | |
2340 | { | |
2341 | nla_nest_end(dump_ctx->skb, dump_ctx->nest); | |
2342 | genlmsg_end(dump_ctx->skb, dump_ctx->hdr); | |
2343 | return 0; | |
2344 | } | |
2345 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close); | |
2346 | ||
35807324 AS |
2347 | void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry) |
2348 | ||
2349 | { | |
2350 | unsigned int value_count, value_index; | |
2351 | struct devlink_dpipe_value *value; | |
2352 | ||
2353 | value = entry->action_values; | |
2354 | value_count = entry->action_values_count; | |
2355 | for (value_index = 0; value_index < value_count; value_index++) { | |
2356 | kfree(value[value_index].value); | |
2357 | kfree(value[value_index].mask); | |
2358 | } | |
2359 | ||
2360 | value = entry->match_values; | |
2361 | value_count = entry->match_values_count; | |
2362 | for (value_index = 0; value_index < value_count; value_index++) { | |
2363 | kfree(value[value_index].value); | |
2364 | kfree(value[value_index].mask); | |
2365 | } | |
2366 | } | |
2367 | EXPORT_SYMBOL(devlink_dpipe_entry_clear); | |
2368 | ||
1555d204 AS |
2369 | static int devlink_dpipe_entries_fill(struct genl_info *info, |
2370 | enum devlink_command cmd, int flags, | |
2371 | struct devlink_dpipe_table *table) | |
2372 | { | |
2373 | struct devlink_dpipe_dump_ctx dump_ctx; | |
2374 | struct nlmsghdr *nlh; | |
2375 | int err; | |
2376 | ||
2377 | dump_ctx.skb = NULL; | |
2378 | dump_ctx.cmd = cmd; | |
2379 | dump_ctx.info = info; | |
2380 | ||
2381 | err = table->table_ops->entries_dump(table->priv, | |
2382 | table->counters_enabled, | |
2383 | &dump_ctx); | |
2384 | if (err) | |
7fe4d6dc | 2385 | return err; |
1555d204 AS |
2386 | |
2387 | send_done: | |
2388 | nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq, | |
2389 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2390 | if (!nlh) { | |
2391 | err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info); | |
2392 | if (err) | |
7fe4d6dc | 2393 | return err; |
1555d204 AS |
2394 | goto send_done; |
2395 | } | |
2396 | return genlmsg_reply(dump_ctx.skb, info); | |
1555d204 AS |
2397 | } |
2398 | ||
2399 | static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb, | |
2400 | struct genl_info *info) | |
2401 | { | |
2402 | struct devlink *devlink = info->user_ptr[0]; | |
2403 | struct devlink_dpipe_table *table; | |
2404 | const char *table_name; | |
2405 | ||
2406 | if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]) | |
2407 | return -EINVAL; | |
2408 | ||
2409 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2410 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 2411 | table_name, devlink); |
1555d204 AS |
2412 | if (!table) |
2413 | return -EINVAL; | |
2414 | ||
2415 | if (!table->table_ops->entries_dump) | |
2416 | return -EINVAL; | |
2417 | ||
2418 | return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET, | |
2419 | 0, table); | |
2420 | } | |
2421 | ||
2422 | static int devlink_dpipe_fields_put(struct sk_buff *skb, | |
2423 | const struct devlink_dpipe_header *header) | |
2424 | { | |
2425 | struct devlink_dpipe_field *field; | |
2426 | struct nlattr *field_attr; | |
2427 | int i; | |
2428 | ||
2429 | for (i = 0; i < header->fields_count; i++) { | |
2430 | field = &header->fields[i]; | |
ae0be8de MK |
2431 | field_attr = nla_nest_start_noflag(skb, |
2432 | DEVLINK_ATTR_DPIPE_FIELD); | |
1555d204 AS |
2433 | if (!field_attr) |
2434 | return -EMSGSIZE; | |
2435 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) || | |
2436 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
2437 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) || | |
2438 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type)) | |
2439 | goto nla_put_failure; | |
2440 | nla_nest_end(skb, field_attr); | |
2441 | } | |
2442 | return 0; | |
2443 | ||
2444 | nla_put_failure: | |
2445 | nla_nest_cancel(skb, field_attr); | |
2446 | return -EMSGSIZE; | |
2447 | } | |
2448 | ||
2449 | static int devlink_dpipe_header_put(struct sk_buff *skb, | |
2450 | struct devlink_dpipe_header *header) | |
2451 | { | |
2452 | struct nlattr *fields_attr, *header_attr; | |
2453 | int err; | |
2454 | ||
ae0be8de | 2455 | header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER); |
cb6bf9cf | 2456 | if (!header_attr) |
1555d204 AS |
2457 | return -EMSGSIZE; |
2458 | ||
2459 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) || | |
2460 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
2461 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
2462 | goto nla_put_failure; | |
2463 | ||
ae0be8de MK |
2464 | fields_attr = nla_nest_start_noflag(skb, |
2465 | DEVLINK_ATTR_DPIPE_HEADER_FIELDS); | |
1555d204 AS |
2466 | if (!fields_attr) |
2467 | goto nla_put_failure; | |
2468 | ||
2469 | err = devlink_dpipe_fields_put(skb, header); | |
2470 | if (err) { | |
2471 | nla_nest_cancel(skb, fields_attr); | |
2472 | goto nla_put_failure; | |
2473 | } | |
2474 | nla_nest_end(skb, fields_attr); | |
2475 | nla_nest_end(skb, header_attr); | |
2476 | return 0; | |
2477 | ||
2478 | nla_put_failure: | |
2479 | err = -EMSGSIZE; | |
2480 | nla_nest_cancel(skb, header_attr); | |
2481 | return err; | |
2482 | } | |
2483 | ||
2484 | static int devlink_dpipe_headers_fill(struct genl_info *info, | |
2485 | enum devlink_command cmd, int flags, | |
2486 | struct devlink_dpipe_headers * | |
2487 | dpipe_headers) | |
2488 | { | |
2489 | struct devlink *devlink = info->user_ptr[0]; | |
2490 | struct nlattr *headers_attr; | |
2491 | struct sk_buff *skb = NULL; | |
2492 | struct nlmsghdr *nlh; | |
2493 | void *hdr; | |
2494 | int i, j; | |
2495 | int err; | |
2496 | ||
2497 | i = 0; | |
2498 | start_again: | |
2499 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2500 | if (err) | |
2501 | return err; | |
2502 | ||
2503 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2504 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
6044bd4a HY |
2505 | if (!hdr) { |
2506 | nlmsg_free(skb); | |
1555d204 | 2507 | return -EMSGSIZE; |
6044bd4a | 2508 | } |
1555d204 AS |
2509 | |
2510 | if (devlink_nl_put_handle(skb, devlink)) | |
2511 | goto nla_put_failure; | |
ae0be8de | 2512 | headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS); |
1555d204 AS |
2513 | if (!headers_attr) |
2514 | goto nla_put_failure; | |
2515 | ||
2516 | j = 0; | |
2517 | for (; i < dpipe_headers->headers_count; i++) { | |
2518 | err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]); | |
2519 | if (err) { | |
2520 | if (!j) | |
2521 | goto err_table_put; | |
2522 | break; | |
2523 | } | |
2524 | j++; | |
2525 | } | |
2526 | nla_nest_end(skb, headers_attr); | |
2527 | genlmsg_end(skb, hdr); | |
2528 | if (i != dpipe_headers->headers_count) | |
2529 | goto start_again; | |
2530 | ||
2531 | send_done: | |
2532 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2533 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2534 | if (!nlh) { | |
2535 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2536 | if (err) | |
7fe4d6dc | 2537 | return err; |
1555d204 AS |
2538 | goto send_done; |
2539 | } | |
2540 | return genlmsg_reply(skb, info); | |
2541 | ||
2542 | nla_put_failure: | |
2543 | err = -EMSGSIZE; | |
2544 | err_table_put: | |
1555d204 AS |
2545 | nlmsg_free(skb); |
2546 | return err; | |
2547 | } | |
2548 | ||
2549 | static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb, | |
2550 | struct genl_info *info) | |
2551 | { | |
2552 | struct devlink *devlink = info->user_ptr[0]; | |
2553 | ||
2554 | if (!devlink->dpipe_headers) | |
2555 | return -EOPNOTSUPP; | |
2556 | return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET, | |
2557 | 0, devlink->dpipe_headers); | |
2558 | } | |
2559 | ||
2560 | static int devlink_dpipe_table_counters_set(struct devlink *devlink, | |
2561 | const char *table_name, | |
2562 | bool enable) | |
2563 | { | |
2564 | struct devlink_dpipe_table *table; | |
2565 | ||
2566 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 2567 | table_name, devlink); |
1555d204 AS |
2568 | if (!table) |
2569 | return -EINVAL; | |
2570 | ||
2571 | if (table->counter_control_extern) | |
2572 | return -EOPNOTSUPP; | |
2573 | ||
2574 | if (!(table->counters_enabled ^ enable)) | |
2575 | return 0; | |
2576 | ||
2577 | table->counters_enabled = enable; | |
2578 | if (table->table_ops->counters_set_update) | |
2579 | table->table_ops->counters_set_update(table->priv, enable); | |
2580 | return 0; | |
2581 | } | |
2582 | ||
2583 | static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb, | |
2584 | struct genl_info *info) | |
2585 | { | |
2586 | struct devlink *devlink = info->user_ptr[0]; | |
2587 | const char *table_name; | |
2588 | bool counters_enable; | |
2589 | ||
2590 | if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] || | |
2591 | !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]) | |
2592 | return -EINVAL; | |
2593 | ||
2594 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2595 | counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]); | |
2596 | ||
2597 | return devlink_dpipe_table_counters_set(devlink, table_name, | |
2598 | counters_enable); | |
08f4b591 OG |
2599 | } |
2600 | ||
43dd7512 | 2601 | static struct devlink_resource * |
d9f9b9a4 AS |
2602 | devlink_resource_find(struct devlink *devlink, |
2603 | struct devlink_resource *resource, u64 resource_id) | |
2604 | { | |
2605 | struct list_head *resource_list; | |
2606 | ||
2607 | if (resource) | |
2608 | resource_list = &resource->resource_list; | |
2609 | else | |
2610 | resource_list = &devlink->resource_list; | |
2611 | ||
2612 | list_for_each_entry(resource, resource_list, list) { | |
2613 | struct devlink_resource *child_resource; | |
2614 | ||
2615 | if (resource->id == resource_id) | |
2616 | return resource; | |
2617 | ||
2618 | child_resource = devlink_resource_find(devlink, resource, | |
2619 | resource_id); | |
2620 | if (child_resource) | |
2621 | return child_resource; | |
2622 | } | |
2623 | return NULL; | |
2624 | } | |
2625 | ||
43dd7512 WY |
2626 | static void |
2627 | devlink_resource_validate_children(struct devlink_resource *resource) | |
d9f9b9a4 AS |
2628 | { |
2629 | struct devlink_resource *child_resource; | |
2630 | bool size_valid = true; | |
2631 | u64 parts_size = 0; | |
2632 | ||
2633 | if (list_empty(&resource->resource_list)) | |
2634 | goto out; | |
2635 | ||
2636 | list_for_each_entry(child_resource, &resource->resource_list, list) | |
2637 | parts_size += child_resource->size_new; | |
2638 | ||
b9d17175 | 2639 | if (parts_size > resource->size_new) |
d9f9b9a4 AS |
2640 | size_valid = false; |
2641 | out: | |
2642 | resource->size_valid = size_valid; | |
2643 | } | |
2644 | ||
cc944ead AS |
2645 | static int |
2646 | devlink_resource_validate_size(struct devlink_resource *resource, u64 size, | |
2647 | struct netlink_ext_ack *extack) | |
2648 | { | |
2649 | u64 reminder; | |
2650 | int err = 0; | |
2651 | ||
0f3e9c97 | 2652 | if (size > resource->size_params.size_max) { |
cc944ead AS |
2653 | NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum"); |
2654 | err = -EINVAL; | |
2655 | } | |
2656 | ||
0f3e9c97 | 2657 | if (size < resource->size_params.size_min) { |
cc944ead AS |
2658 | NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum"); |
2659 | err = -EINVAL; | |
2660 | } | |
2661 | ||
0f3e9c97 | 2662 | div64_u64_rem(size, resource->size_params.size_granularity, &reminder); |
cc944ead AS |
2663 | if (reminder) { |
2664 | NL_SET_ERR_MSG_MOD(extack, "Wrong granularity"); | |
2665 | err = -EINVAL; | |
2666 | } | |
2667 | ||
2668 | return err; | |
2669 | } | |
2670 | ||
d9f9b9a4 AS |
2671 | static int devlink_nl_cmd_resource_set(struct sk_buff *skb, |
2672 | struct genl_info *info) | |
2673 | { | |
2674 | struct devlink *devlink = info->user_ptr[0]; | |
2675 | struct devlink_resource *resource; | |
2676 | u64 resource_id; | |
2677 | u64 size; | |
2678 | int err; | |
2679 | ||
2680 | if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] || | |
2681 | !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]) | |
2682 | return -EINVAL; | |
2683 | resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]); | |
2684 | ||
2685 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
2686 | if (!resource) | |
2687 | return -EINVAL; | |
2688 | ||
d9f9b9a4 | 2689 | size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]); |
cc944ead | 2690 | err = devlink_resource_validate_size(resource, size, info->extack); |
d9f9b9a4 AS |
2691 | if (err) |
2692 | return err; | |
2693 | ||
2694 | resource->size_new = size; | |
2695 | devlink_resource_validate_children(resource); | |
2696 | if (resource->parent) | |
2697 | devlink_resource_validate_children(resource->parent); | |
2698 | return 0; | |
2699 | } | |
2700 | ||
3d18e4f1 | 2701 | static int |
d9f9b9a4 AS |
2702 | devlink_resource_size_params_put(struct devlink_resource *resource, |
2703 | struct sk_buff *skb) | |
2704 | { | |
2705 | struct devlink_resource_size_params *size_params; | |
2706 | ||
77d27096 | 2707 | size_params = &resource->size_params; |
3d18e4f1 AS |
2708 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN, |
2709 | size_params->size_granularity, DEVLINK_ATTR_PAD) || | |
2710 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX, | |
2711 | size_params->size_max, DEVLINK_ATTR_PAD) || | |
2712 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN, | |
2713 | size_params->size_min, DEVLINK_ATTR_PAD) || | |
2714 | nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit)) | |
2715 | return -EMSGSIZE; | |
2716 | return 0; | |
d9f9b9a4 AS |
2717 | } |
2718 | ||
fc56be47 JP |
2719 | static int devlink_resource_occ_put(struct devlink_resource *resource, |
2720 | struct sk_buff *skb) | |
2721 | { | |
2722 | if (!resource->occ_get) | |
2723 | return 0; | |
2724 | return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC, | |
2725 | resource->occ_get(resource->occ_get_priv), | |
2726 | DEVLINK_ATTR_PAD); | |
2727 | } | |
2728 | ||
d9f9b9a4 AS |
2729 | static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb, |
2730 | struct devlink_resource *resource) | |
2731 | { | |
2732 | struct devlink_resource *child_resource; | |
2733 | struct nlattr *child_resource_attr; | |
2734 | struct nlattr *resource_attr; | |
2735 | ||
ae0be8de | 2736 | resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE); |
d9f9b9a4 AS |
2737 | if (!resource_attr) |
2738 | return -EMSGSIZE; | |
2739 | ||
2740 | if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) || | |
2741 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size, | |
2742 | DEVLINK_ATTR_PAD) || | |
2743 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id, | |
2744 | DEVLINK_ATTR_PAD)) | |
2745 | goto nla_put_failure; | |
2746 | if (resource->size != resource->size_new) | |
2747 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW, | |
2748 | resource->size_new, DEVLINK_ATTR_PAD); | |
fc56be47 JP |
2749 | if (devlink_resource_occ_put(resource, skb)) |
2750 | goto nla_put_failure; | |
3d18e4f1 AS |
2751 | if (devlink_resource_size_params_put(resource, skb)) |
2752 | goto nla_put_failure; | |
d9f9b9a4 AS |
2753 | if (list_empty(&resource->resource_list)) |
2754 | goto out; | |
2755 | ||
2756 | if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID, | |
2757 | resource->size_valid)) | |
2758 | goto nla_put_failure; | |
2759 | ||
ae0be8de MK |
2760 | child_resource_attr = nla_nest_start_noflag(skb, |
2761 | DEVLINK_ATTR_RESOURCE_LIST); | |
d9f9b9a4 AS |
2762 | if (!child_resource_attr) |
2763 | goto nla_put_failure; | |
2764 | ||
2765 | list_for_each_entry(child_resource, &resource->resource_list, list) { | |
2766 | if (devlink_resource_put(devlink, skb, child_resource)) | |
2767 | goto resource_put_failure; | |
2768 | } | |
2769 | ||
2770 | nla_nest_end(skb, child_resource_attr); | |
2771 | out: | |
2772 | nla_nest_end(skb, resource_attr); | |
2773 | return 0; | |
2774 | ||
2775 | resource_put_failure: | |
2776 | nla_nest_cancel(skb, child_resource_attr); | |
2777 | nla_put_failure: | |
2778 | nla_nest_cancel(skb, resource_attr); | |
2779 | return -EMSGSIZE; | |
2780 | } | |
2781 | ||
2782 | static int devlink_resource_fill(struct genl_info *info, | |
2783 | enum devlink_command cmd, int flags) | |
2784 | { | |
2785 | struct devlink *devlink = info->user_ptr[0]; | |
2786 | struct devlink_resource *resource; | |
2787 | struct nlattr *resources_attr; | |
2788 | struct sk_buff *skb = NULL; | |
2789 | struct nlmsghdr *nlh; | |
2790 | bool incomplete; | |
2791 | void *hdr; | |
2792 | int i; | |
2793 | int err; | |
2794 | ||
2795 | resource = list_first_entry(&devlink->resource_list, | |
2796 | struct devlink_resource, list); | |
2797 | start_again: | |
2798 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2799 | if (err) | |
2800 | return err; | |
2801 | ||
2802 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2803 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
2804 | if (!hdr) { | |
2805 | nlmsg_free(skb); | |
2806 | return -EMSGSIZE; | |
2807 | } | |
2808 | ||
2809 | if (devlink_nl_put_handle(skb, devlink)) | |
2810 | goto nla_put_failure; | |
2811 | ||
ae0be8de MK |
2812 | resources_attr = nla_nest_start_noflag(skb, |
2813 | DEVLINK_ATTR_RESOURCE_LIST); | |
d9f9b9a4 AS |
2814 | if (!resources_attr) |
2815 | goto nla_put_failure; | |
2816 | ||
2817 | incomplete = false; | |
2818 | i = 0; | |
2819 | list_for_each_entry_from(resource, &devlink->resource_list, list) { | |
2820 | err = devlink_resource_put(devlink, skb, resource); | |
2821 | if (err) { | |
2822 | if (!i) | |
2823 | goto err_resource_put; | |
2824 | incomplete = true; | |
2825 | break; | |
2826 | } | |
2827 | i++; | |
2828 | } | |
2829 | nla_nest_end(skb, resources_attr); | |
2830 | genlmsg_end(skb, hdr); | |
2831 | if (incomplete) | |
2832 | goto start_again; | |
2833 | send_done: | |
2834 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2835 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2836 | if (!nlh) { | |
2837 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2838 | if (err) | |
83fe9a96 | 2839 | return err; |
d9f9b9a4 AS |
2840 | goto send_done; |
2841 | } | |
2842 | return genlmsg_reply(skb, info); | |
2843 | ||
2844 | nla_put_failure: | |
2845 | err = -EMSGSIZE; | |
2846 | err_resource_put: | |
d9f9b9a4 AS |
2847 | nlmsg_free(skb); |
2848 | return err; | |
2849 | } | |
2850 | ||
2851 | static int devlink_nl_cmd_resource_dump(struct sk_buff *skb, | |
2852 | struct genl_info *info) | |
2853 | { | |
2854 | struct devlink *devlink = info->user_ptr[0]; | |
2855 | ||
2856 | if (list_empty(&devlink->resource_list)) | |
2857 | return -EOPNOTSUPP; | |
2858 | ||
2859 | return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0); | |
2860 | } | |
2861 | ||
2d8dc5bb AS |
2862 | static int |
2863 | devlink_resources_validate(struct devlink *devlink, | |
2864 | struct devlink_resource *resource, | |
2865 | struct genl_info *info) | |
2866 | { | |
2867 | struct list_head *resource_list; | |
2868 | int err = 0; | |
2869 | ||
2870 | if (resource) | |
2871 | resource_list = &resource->resource_list; | |
2872 | else | |
2873 | resource_list = &devlink->resource_list; | |
2874 | ||
2875 | list_for_each_entry(resource, resource_list, list) { | |
2876 | if (!resource->size_valid) | |
2877 | return -EINVAL; | |
2878 | err = devlink_resources_validate(devlink, resource, info); | |
2879 | if (err) | |
2880 | return err; | |
2881 | } | |
2882 | return err; | |
2883 | } | |
2884 | ||
070c63f2 JP |
2885 | static struct net *devlink_netns_get(struct sk_buff *skb, |
2886 | struct genl_info *info) | |
2887 | { | |
2888 | struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID]; | |
2889 | struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD]; | |
2890 | struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID]; | |
2891 | struct net *net; | |
2892 | ||
2893 | if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) { | |
054eae82 | 2894 | NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified"); |
070c63f2 JP |
2895 | return ERR_PTR(-EINVAL); |
2896 | } | |
2897 | ||
2898 | if (netns_pid_attr) { | |
2899 | net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr)); | |
2900 | } else if (netns_fd_attr) { | |
2901 | net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr)); | |
2902 | } else if (netns_id_attr) { | |
2903 | net = get_net_ns_by_id(sock_net(skb->sk), | |
2904 | nla_get_u32(netns_id_attr)); | |
2905 | if (!net) | |
2906 | net = ERR_PTR(-EINVAL); | |
2907 | } else { | |
2908 | WARN_ON(1); | |
2909 | net = ERR_PTR(-EINVAL); | |
2910 | } | |
2911 | if (IS_ERR(net)) { | |
054eae82 | 2912 | NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace"); |
070c63f2 JP |
2913 | return ERR_PTR(-EINVAL); |
2914 | } | |
2915 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { | |
2916 | put_net(net); | |
2917 | return ERR_PTR(-EPERM); | |
2918 | } | |
2919 | return net; | |
2920 | } | |
2921 | ||
2922 | static void devlink_param_notify(struct devlink *devlink, | |
2923 | unsigned int port_index, | |
2924 | struct devlink_param_item *param_item, | |
2925 | enum devlink_command cmd); | |
2926 | ||
2927 | static void devlink_reload_netns_change(struct devlink *devlink, | |
2928 | struct net *dest_net) | |
2929 | { | |
2930 | struct devlink_param_item *param_item; | |
2931 | ||
2932 | /* Userspace needs to be notified about devlink objects | |
2933 | * removed from original and entering new network namespace. | |
2934 | * The rest of the devlink objects are re-created during | |
2935 | * reload process so the notifications are generated separatelly. | |
2936 | */ | |
2937 | ||
2938 | list_for_each_entry(param_item, &devlink->param_list, list) | |
2939 | devlink_param_notify(devlink, 0, param_item, | |
2940 | DEVLINK_CMD_PARAM_DEL); | |
2941 | devlink_notify(devlink, DEVLINK_CMD_DEL); | |
2942 | ||
8273fd84 | 2943 | __devlink_net_set(devlink, dest_net); |
070c63f2 JP |
2944 | |
2945 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
2946 | list_for_each_entry(param_item, &devlink->param_list, list) | |
2947 | devlink_param_notify(devlink, 0, param_item, | |
2948 | DEVLINK_CMD_PARAM_NEW); | |
2949 | } | |
2950 | ||
eac5f8a9 | 2951 | static bool devlink_reload_supported(const struct devlink *devlink) |
97691069 JP |
2952 | { |
2953 | return devlink->ops->reload_down && devlink->ops->reload_up; | |
2954 | } | |
2955 | ||
2670ac26 JP |
2956 | static void devlink_reload_failed_set(struct devlink *devlink, |
2957 | bool reload_failed) | |
2958 | { | |
2959 | if (devlink->reload_failed == reload_failed) | |
2960 | return; | |
2961 | devlink->reload_failed = reload_failed; | |
2962 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
2963 | } | |
2964 | ||
2965 | bool devlink_is_reload_failed(const struct devlink *devlink) | |
2966 | { | |
2967 | return devlink->reload_failed; | |
2968 | } | |
2969 | EXPORT_SYMBOL_GPL(devlink_is_reload_failed); | |
2970 | ||
070c63f2 JP |
2971 | static int devlink_reload(struct devlink *devlink, struct net *dest_net, |
2972 | struct netlink_ext_ack *extack) | |
2973 | { | |
2974 | int err; | |
2975 | ||
a0c76345 JP |
2976 | if (!devlink->reload_enabled) |
2977 | return -EOPNOTSUPP; | |
2978 | ||
070c63f2 JP |
2979 | err = devlink->ops->reload_down(devlink, !!dest_net, extack); |
2980 | if (err) | |
2981 | return err; | |
2982 | ||
2983 | if (dest_net && !net_eq(dest_net, devlink_net(devlink))) | |
2984 | devlink_reload_netns_change(devlink, dest_net); | |
2985 | ||
2986 | err = devlink->ops->reload_up(devlink, extack); | |
2987 | devlink_reload_failed_set(devlink, !!err); | |
2988 | return err; | |
2989 | } | |
2990 | ||
2d8dc5bb AS |
2991 | static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info) |
2992 | { | |
2993 | struct devlink *devlink = info->user_ptr[0]; | |
070c63f2 | 2994 | struct net *dest_net = NULL; |
2d8dc5bb AS |
2995 | int err; |
2996 | ||
9232a3e6 | 2997 | if (!devlink_reload_supported(devlink)) |
2d8dc5bb AS |
2998 | return -EOPNOTSUPP; |
2999 | ||
3000 | err = devlink_resources_validate(devlink, NULL, info); | |
3001 | if (err) { | |
3002 | NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed"); | |
3003 | return err; | |
3004 | } | |
070c63f2 JP |
3005 | |
3006 | if (info->attrs[DEVLINK_ATTR_NETNS_PID] || | |
3007 | info->attrs[DEVLINK_ATTR_NETNS_FD] || | |
3008 | info->attrs[DEVLINK_ATTR_NETNS_ID]) { | |
3009 | dest_net = devlink_netns_get(skb, info); | |
3010 | if (IS_ERR(dest_net)) | |
3011 | return PTR_ERR(dest_net); | |
3012 | } | |
3013 | ||
3014 | err = devlink_reload(devlink, dest_net, info->extack); | |
3015 | ||
3016 | if (dest_net) | |
3017 | put_net(dest_net); | |
3018 | ||
2670ac26 | 3019 | return err; |
2d8dc5bb AS |
3020 | } |
3021 | ||
191ed202 JP |
3022 | static int devlink_nl_flash_update_fill(struct sk_buff *msg, |
3023 | struct devlink *devlink, | |
3024 | enum devlink_command cmd, | |
3025 | const char *status_msg, | |
3026 | const char *component, | |
3027 | unsigned long done, unsigned long total) | |
3028 | { | |
3029 | void *hdr; | |
3030 | ||
3031 | hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd); | |
3032 | if (!hdr) | |
3033 | return -EMSGSIZE; | |
3034 | ||
3035 | if (devlink_nl_put_handle(msg, devlink)) | |
3036 | goto nla_put_failure; | |
3037 | ||
3038 | if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS) | |
3039 | goto out; | |
3040 | ||
3041 | if (status_msg && | |
3042 | nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG, | |
3043 | status_msg)) | |
3044 | goto nla_put_failure; | |
3045 | if (component && | |
3046 | nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT, | |
3047 | component)) | |
3048 | goto nla_put_failure; | |
3049 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE, | |
3050 | done, DEVLINK_ATTR_PAD)) | |
3051 | goto nla_put_failure; | |
3052 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL, | |
3053 | total, DEVLINK_ATTR_PAD)) | |
3054 | goto nla_put_failure; | |
3055 | ||
3056 | out: | |
3057 | genlmsg_end(msg, hdr); | |
3058 | return 0; | |
3059 | ||
3060 | nla_put_failure: | |
3061 | genlmsg_cancel(msg, hdr); | |
3062 | return -EMSGSIZE; | |
3063 | } | |
3064 | ||
3065 | static void __devlink_flash_update_notify(struct devlink *devlink, | |
3066 | enum devlink_command cmd, | |
3067 | const char *status_msg, | |
3068 | const char *component, | |
3069 | unsigned long done, | |
3070 | unsigned long total) | |
3071 | { | |
3072 | struct sk_buff *msg; | |
3073 | int err; | |
3074 | ||
3075 | WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE && | |
3076 | cmd != DEVLINK_CMD_FLASH_UPDATE_END && | |
3077 | cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS); | |
3078 | ||
3079 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3080 | if (!msg) | |
3081 | return; | |
3082 | ||
3083 | err = devlink_nl_flash_update_fill(msg, devlink, cmd, status_msg, | |
3084 | component, done, total); | |
3085 | if (err) | |
3086 | goto out_free_msg; | |
3087 | ||
3088 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3089 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
3090 | return; | |
3091 | ||
3092 | out_free_msg: | |
3093 | nlmsg_free(msg); | |
3094 | } | |
3095 | ||
3096 | void devlink_flash_update_begin_notify(struct devlink *devlink) | |
3097 | { | |
3098 | __devlink_flash_update_notify(devlink, | |
3099 | DEVLINK_CMD_FLASH_UPDATE, | |
3100 | NULL, NULL, 0, 0); | |
3101 | } | |
3102 | EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify); | |
3103 | ||
3104 | void devlink_flash_update_end_notify(struct devlink *devlink) | |
3105 | { | |
3106 | __devlink_flash_update_notify(devlink, | |
3107 | DEVLINK_CMD_FLASH_UPDATE_END, | |
3108 | NULL, NULL, 0, 0); | |
3109 | } | |
3110 | EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify); | |
3111 | ||
3112 | void devlink_flash_update_status_notify(struct devlink *devlink, | |
3113 | const char *status_msg, | |
3114 | const char *component, | |
3115 | unsigned long done, | |
3116 | unsigned long total) | |
3117 | { | |
3118 | __devlink_flash_update_notify(devlink, | |
3119 | DEVLINK_CMD_FLASH_UPDATE_STATUS, | |
3120 | status_msg, component, done, total); | |
3121 | } | |
3122 | EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify); | |
3123 | ||
76726ccb JK |
3124 | static int devlink_nl_cmd_flash_update(struct sk_buff *skb, |
3125 | struct genl_info *info) | |
3126 | { | |
3127 | struct devlink *devlink = info->user_ptr[0]; | |
3128 | const char *file_name, *component; | |
3129 | struct nlattr *nla_component; | |
3130 | ||
3131 | if (!devlink->ops->flash_update) | |
3132 | return -EOPNOTSUPP; | |
3133 | ||
3134 | if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]) | |
3135 | return -EINVAL; | |
3136 | file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]); | |
3137 | ||
3138 | nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT]; | |
3139 | component = nla_component ? nla_data(nla_component) : NULL; | |
3140 | ||
3141 | return devlink->ops->flash_update(devlink, file_name, component, | |
3142 | info->extack); | |
3143 | } | |
3144 | ||
036467c3 MS |
3145 | static const struct devlink_param devlink_param_generic[] = { |
3146 | { | |
3147 | .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, | |
3148 | .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME, | |
3149 | .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE, | |
3150 | }, | |
3151 | { | |
3152 | .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS, | |
3153 | .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME, | |
3154 | .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE, | |
3155 | }, | |
f567bcda VV |
3156 | { |
3157 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, | |
3158 | .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME, | |
3159 | .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE, | |
3160 | }, | |
f6a69885 AV |
3161 | { |
3162 | .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, | |
3163 | .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME, | |
3164 | .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE, | |
3165 | }, | |
e3b51061 VV |
3166 | { |
3167 | .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI, | |
3168 | .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME, | |
3169 | .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE, | |
3170 | }, | |
f61cba42 VV |
3171 | { |
3172 | .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX, | |
3173 | .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME, | |
3174 | .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE, | |
3175 | }, | |
16511789 VV |
3176 | { |
3177 | .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN, | |
3178 | .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME, | |
3179 | .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE, | |
3180 | }, | |
846e980a ST |
3181 | { |
3182 | .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, | |
3183 | .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME, | |
3184 | .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE, | |
3185 | }, | |
5bbd21df DM |
3186 | { |
3187 | .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE, | |
3188 | .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME, | |
3189 | .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE, | |
3190 | }, | |
6c7295e1 MG |
3191 | { |
3192 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE, | |
3193 | .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME, | |
3194 | .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE, | |
3195 | }, | |
036467c3 | 3196 | }; |
eabaef18 MS |
3197 | |
3198 | static int devlink_param_generic_verify(const struct devlink_param *param) | |
3199 | { | |
3200 | /* verify it match generic parameter by id and name */ | |
3201 | if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX) | |
3202 | return -EINVAL; | |
3203 | if (strcmp(param->name, devlink_param_generic[param->id].name)) | |
3204 | return -ENOENT; | |
3205 | ||
3206 | WARN_ON(param->type != devlink_param_generic[param->id].type); | |
3207 | ||
3208 | return 0; | |
3209 | } | |
3210 | ||
3211 | static int devlink_param_driver_verify(const struct devlink_param *param) | |
3212 | { | |
3213 | int i; | |
3214 | ||
3215 | if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX) | |
3216 | return -EINVAL; | |
3217 | /* verify no such name in generic params */ | |
3218 | for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++) | |
3219 | if (!strcmp(param->name, devlink_param_generic[i].name)) | |
3220 | return -EEXIST; | |
3221 | ||
3222 | return 0; | |
3223 | } | |
3224 | ||
3225 | static struct devlink_param_item * | |
3226 | devlink_param_find_by_name(struct list_head *param_list, | |
3227 | const char *param_name) | |
3228 | { | |
3229 | struct devlink_param_item *param_item; | |
3230 | ||
3231 | list_for_each_entry(param_item, param_list, list) | |
3232 | if (!strcmp(param_item->param->name, param_name)) | |
3233 | return param_item; | |
3234 | return NULL; | |
3235 | } | |
3236 | ||
ec01aeb1 MS |
3237 | static struct devlink_param_item * |
3238 | devlink_param_find_by_id(struct list_head *param_list, u32 param_id) | |
3239 | { | |
3240 | struct devlink_param_item *param_item; | |
3241 | ||
3242 | list_for_each_entry(param_item, param_list, list) | |
3243 | if (param_item->param->id == param_id) | |
3244 | return param_item; | |
3245 | return NULL; | |
3246 | } | |
3247 | ||
45f05def MS |
3248 | static bool |
3249 | devlink_param_cmode_is_supported(const struct devlink_param *param, | |
3250 | enum devlink_param_cmode cmode) | |
3251 | { | |
3252 | return test_bit(cmode, ¶m->supported_cmodes); | |
3253 | } | |
3254 | ||
3255 | static int devlink_param_get(struct devlink *devlink, | |
3256 | const struct devlink_param *param, | |
3257 | struct devlink_param_gset_ctx *ctx) | |
3258 | { | |
3259 | if (!param->get) | |
3260 | return -EOPNOTSUPP; | |
3261 | return param->get(devlink, param->id, ctx); | |
3262 | } | |
3263 | ||
e3b7ca18 MS |
3264 | static int devlink_param_set(struct devlink *devlink, |
3265 | const struct devlink_param *param, | |
3266 | struct devlink_param_gset_ctx *ctx) | |
3267 | { | |
3268 | if (!param->set) | |
3269 | return -EOPNOTSUPP; | |
3270 | return param->set(devlink, param->id, ctx); | |
3271 | } | |
3272 | ||
45f05def MS |
3273 | static int |
3274 | devlink_param_type_to_nla_type(enum devlink_param_type param_type) | |
3275 | { | |
3276 | switch (param_type) { | |
3277 | case DEVLINK_PARAM_TYPE_U8: | |
3278 | return NLA_U8; | |
3279 | case DEVLINK_PARAM_TYPE_U16: | |
3280 | return NLA_U16; | |
3281 | case DEVLINK_PARAM_TYPE_U32: | |
3282 | return NLA_U32; | |
3283 | case DEVLINK_PARAM_TYPE_STRING: | |
3284 | return NLA_STRING; | |
3285 | case DEVLINK_PARAM_TYPE_BOOL: | |
3286 | return NLA_FLAG; | |
3287 | default: | |
3288 | return -EINVAL; | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | static int | |
3293 | devlink_nl_param_value_fill_one(struct sk_buff *msg, | |
3294 | enum devlink_param_type type, | |
3295 | enum devlink_param_cmode cmode, | |
3296 | union devlink_param_value val) | |
3297 | { | |
3298 | struct nlattr *param_value_attr; | |
3299 | ||
ae0be8de MK |
3300 | param_value_attr = nla_nest_start_noflag(msg, |
3301 | DEVLINK_ATTR_PARAM_VALUE); | |
45f05def MS |
3302 | if (!param_value_attr) |
3303 | goto nla_put_failure; | |
3304 | ||
3305 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode)) | |
3306 | goto value_nest_cancel; | |
3307 | ||
3308 | switch (type) { | |
3309 | case DEVLINK_PARAM_TYPE_U8: | |
3310 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8)) | |
3311 | goto value_nest_cancel; | |
3312 | break; | |
3313 | case DEVLINK_PARAM_TYPE_U16: | |
3314 | if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16)) | |
3315 | goto value_nest_cancel; | |
3316 | break; | |
3317 | case DEVLINK_PARAM_TYPE_U32: | |
3318 | if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32)) | |
3319 | goto value_nest_cancel; | |
3320 | break; | |
3321 | case DEVLINK_PARAM_TYPE_STRING: | |
3322 | if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, | |
3323 | val.vstr)) | |
3324 | goto value_nest_cancel; | |
3325 | break; | |
3326 | case DEVLINK_PARAM_TYPE_BOOL: | |
3327 | if (val.vbool && | |
3328 | nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA)) | |
3329 | goto value_nest_cancel; | |
3330 | break; | |
3331 | } | |
3332 | ||
3333 | nla_nest_end(msg, param_value_attr); | |
3334 | return 0; | |
3335 | ||
3336 | value_nest_cancel: | |
3337 | nla_nest_cancel(msg, param_value_attr); | |
3338 | nla_put_failure: | |
3339 | return -EMSGSIZE; | |
3340 | } | |
3341 | ||
3342 | static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink, | |
f4601dee | 3343 | unsigned int port_index, |
45f05def MS |
3344 | struct devlink_param_item *param_item, |
3345 | enum devlink_command cmd, | |
3346 | u32 portid, u32 seq, int flags) | |
3347 | { | |
3348 | union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1]; | |
7c62cfb8 | 3349 | bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {}; |
45f05def MS |
3350 | const struct devlink_param *param = param_item->param; |
3351 | struct devlink_param_gset_ctx ctx; | |
3352 | struct nlattr *param_values_list; | |
3353 | struct nlattr *param_attr; | |
3354 | int nla_type; | |
3355 | void *hdr; | |
3356 | int err; | |
3357 | int i; | |
3358 | ||
3359 | /* Get value from driver part to driverinit configuration mode */ | |
3360 | for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { | |
3361 | if (!devlink_param_cmode_is_supported(param, i)) | |
3362 | continue; | |
3363 | if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) { | |
3364 | if (!param_item->driverinit_value_valid) | |
3365 | return -EOPNOTSUPP; | |
3366 | param_value[i] = param_item->driverinit_value; | |
3367 | } else { | |
7c62cfb8 JP |
3368 | if (!param_item->published) |
3369 | continue; | |
45f05def MS |
3370 | ctx.cmode = i; |
3371 | err = devlink_param_get(devlink, param, &ctx); | |
3372 | if (err) | |
3373 | return err; | |
3374 | param_value[i] = ctx.val; | |
3375 | } | |
7c62cfb8 | 3376 | param_value_set[i] = true; |
45f05def MS |
3377 | } |
3378 | ||
3379 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
3380 | if (!hdr) | |
3381 | return -EMSGSIZE; | |
3382 | ||
3383 | if (devlink_nl_put_handle(msg, devlink)) | |
3384 | goto genlmsg_cancel; | |
f4601dee | 3385 | |
c1e5786d VV |
3386 | if (cmd == DEVLINK_CMD_PORT_PARAM_GET || |
3387 | cmd == DEVLINK_CMD_PORT_PARAM_NEW || | |
3388 | cmd == DEVLINK_CMD_PORT_PARAM_DEL) | |
f4601dee VV |
3389 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index)) |
3390 | goto genlmsg_cancel; | |
3391 | ||
ae0be8de | 3392 | param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM); |
45f05def MS |
3393 | if (!param_attr) |
3394 | goto genlmsg_cancel; | |
3395 | if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name)) | |
3396 | goto param_nest_cancel; | |
3397 | if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC)) | |
3398 | goto param_nest_cancel; | |
3399 | ||
3400 | nla_type = devlink_param_type_to_nla_type(param->type); | |
3401 | if (nla_type < 0) | |
3402 | goto param_nest_cancel; | |
3403 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type)) | |
3404 | goto param_nest_cancel; | |
3405 | ||
ae0be8de MK |
3406 | param_values_list = nla_nest_start_noflag(msg, |
3407 | DEVLINK_ATTR_PARAM_VALUES_LIST); | |
45f05def MS |
3408 | if (!param_values_list) |
3409 | goto param_nest_cancel; | |
3410 | ||
3411 | for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { | |
7c62cfb8 | 3412 | if (!param_value_set[i]) |
45f05def MS |
3413 | continue; |
3414 | err = devlink_nl_param_value_fill_one(msg, param->type, | |
3415 | i, param_value[i]); | |
3416 | if (err) | |
3417 | goto values_list_nest_cancel; | |
3418 | } | |
3419 | ||
3420 | nla_nest_end(msg, param_values_list); | |
3421 | nla_nest_end(msg, param_attr); | |
3422 | genlmsg_end(msg, hdr); | |
3423 | return 0; | |
3424 | ||
3425 | values_list_nest_cancel: | |
3426 | nla_nest_end(msg, param_values_list); | |
3427 | param_nest_cancel: | |
3428 | nla_nest_cancel(msg, param_attr); | |
3429 | genlmsg_cancel: | |
3430 | genlmsg_cancel(msg, hdr); | |
3431 | return -EMSGSIZE; | |
3432 | } | |
3433 | ||
ea601e17 | 3434 | static void devlink_param_notify(struct devlink *devlink, |
c1e5786d | 3435 | unsigned int port_index, |
ea601e17 MS |
3436 | struct devlink_param_item *param_item, |
3437 | enum devlink_command cmd) | |
3438 | { | |
3439 | struct sk_buff *msg; | |
3440 | int err; | |
3441 | ||
c1e5786d VV |
3442 | WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL && |
3443 | cmd != DEVLINK_CMD_PORT_PARAM_NEW && | |
3444 | cmd != DEVLINK_CMD_PORT_PARAM_DEL); | |
ea601e17 MS |
3445 | |
3446 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3447 | if (!msg) | |
3448 | return; | |
c1e5786d VV |
3449 | err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd, |
3450 | 0, 0, 0); | |
ea601e17 MS |
3451 | if (err) { |
3452 | nlmsg_free(msg); | |
3453 | return; | |
3454 | } | |
3455 | ||
3456 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3457 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
3458 | } | |
3459 | ||
45f05def MS |
3460 | static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg, |
3461 | struct netlink_callback *cb) | |
3462 | { | |
3463 | struct devlink_param_item *param_item; | |
3464 | struct devlink *devlink; | |
3465 | int start = cb->args[0]; | |
3466 | int idx = 0; | |
c62c2cfb | 3467 | int err = 0; |
45f05def MS |
3468 | |
3469 | mutex_lock(&devlink_mutex); | |
3470 | list_for_each_entry(devlink, &devlink_list, list) { | |
3471 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
3472 | continue; | |
3473 | mutex_lock(&devlink->lock); | |
3474 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
3475 | if (idx < start) { | |
3476 | idx++; | |
3477 | continue; | |
3478 | } | |
f4601dee | 3479 | err = devlink_nl_param_fill(msg, devlink, 0, param_item, |
45f05def MS |
3480 | DEVLINK_CMD_PARAM_GET, |
3481 | NETLINK_CB(cb->skb).portid, | |
3482 | cb->nlh->nlmsg_seq, | |
3483 | NLM_F_MULTI); | |
82274d07 JK |
3484 | if (err == -EOPNOTSUPP) { |
3485 | err = 0; | |
3486 | } else if (err) { | |
45f05def MS |
3487 | mutex_unlock(&devlink->lock); |
3488 | goto out; | |
3489 | } | |
3490 | idx++; | |
3491 | } | |
3492 | mutex_unlock(&devlink->lock); | |
3493 | } | |
3494 | out: | |
3495 | mutex_unlock(&devlink_mutex); | |
3496 | ||
c62c2cfb JP |
3497 | if (err != -EMSGSIZE) |
3498 | return err; | |
3499 | ||
45f05def MS |
3500 | cb->args[0] = idx; |
3501 | return msg->len; | |
3502 | } | |
3503 | ||
e3b7ca18 MS |
3504 | static int |
3505 | devlink_param_type_get_from_info(struct genl_info *info, | |
3506 | enum devlink_param_type *param_type) | |
3507 | { | |
3508 | if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE]) | |
3509 | return -EINVAL; | |
3510 | ||
3511 | switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) { | |
3512 | case NLA_U8: | |
3513 | *param_type = DEVLINK_PARAM_TYPE_U8; | |
3514 | break; | |
3515 | case NLA_U16: | |
3516 | *param_type = DEVLINK_PARAM_TYPE_U16; | |
3517 | break; | |
3518 | case NLA_U32: | |
3519 | *param_type = DEVLINK_PARAM_TYPE_U32; | |
3520 | break; | |
3521 | case NLA_STRING: | |
3522 | *param_type = DEVLINK_PARAM_TYPE_STRING; | |
3523 | break; | |
3524 | case NLA_FLAG: | |
3525 | *param_type = DEVLINK_PARAM_TYPE_BOOL; | |
3526 | break; | |
3527 | default: | |
3528 | return -EINVAL; | |
3529 | } | |
3530 | ||
3531 | return 0; | |
3532 | } | |
3533 | ||
3534 | static int | |
3535 | devlink_param_value_get_from_info(const struct devlink_param *param, | |
3536 | struct genl_info *info, | |
3537 | union devlink_param_value *value) | |
3538 | { | |
8750939b | 3539 | struct nlattr *param_data; |
f355cfcd MS |
3540 | int len; |
3541 | ||
8750939b JK |
3542 | param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]; |
3543 | ||
3544 | if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data) | |
e3b7ca18 MS |
3545 | return -EINVAL; |
3546 | ||
3547 | switch (param->type) { | |
3548 | case DEVLINK_PARAM_TYPE_U8: | |
8750939b JK |
3549 | if (nla_len(param_data) != sizeof(u8)) |
3550 | return -EINVAL; | |
3551 | value->vu8 = nla_get_u8(param_data); | |
e3b7ca18 MS |
3552 | break; |
3553 | case DEVLINK_PARAM_TYPE_U16: | |
8750939b JK |
3554 | if (nla_len(param_data) != sizeof(u16)) |
3555 | return -EINVAL; | |
3556 | value->vu16 = nla_get_u16(param_data); | |
e3b7ca18 MS |
3557 | break; |
3558 | case DEVLINK_PARAM_TYPE_U32: | |
8750939b JK |
3559 | if (nla_len(param_data) != sizeof(u32)) |
3560 | return -EINVAL; | |
3561 | value->vu32 = nla_get_u32(param_data); | |
e3b7ca18 MS |
3562 | break; |
3563 | case DEVLINK_PARAM_TYPE_STRING: | |
8750939b JK |
3564 | len = strnlen(nla_data(param_data), nla_len(param_data)); |
3565 | if (len == nla_len(param_data) || | |
bde74ad1 | 3566 | len >= __DEVLINK_PARAM_MAX_STRING_VALUE) |
e3b7ca18 | 3567 | return -EINVAL; |
8750939b | 3568 | strcpy(value->vstr, nla_data(param_data)); |
e3b7ca18 MS |
3569 | break; |
3570 | case DEVLINK_PARAM_TYPE_BOOL: | |
8750939b JK |
3571 | if (param_data && nla_len(param_data)) |
3572 | return -EINVAL; | |
3573 | value->vbool = nla_get_flag(param_data); | |
e3b7ca18 MS |
3574 | break; |
3575 | } | |
3576 | return 0; | |
3577 | } | |
3578 | ||
45f05def | 3579 | static struct devlink_param_item * |
f4601dee | 3580 | devlink_param_get_from_info(struct list_head *param_list, |
45f05def MS |
3581 | struct genl_info *info) |
3582 | { | |
3583 | char *param_name; | |
3584 | ||
3585 | if (!info->attrs[DEVLINK_ATTR_PARAM_NAME]) | |
3586 | return NULL; | |
3587 | ||
3588 | param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]); | |
f4601dee | 3589 | return devlink_param_find_by_name(param_list, param_name); |
45f05def MS |
3590 | } |
3591 | ||
3592 | static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb, | |
3593 | struct genl_info *info) | |
3594 | { | |
3595 | struct devlink *devlink = info->user_ptr[0]; | |
3596 | struct devlink_param_item *param_item; | |
3597 | struct sk_buff *msg; | |
3598 | int err; | |
3599 | ||
f4601dee | 3600 | param_item = devlink_param_get_from_info(&devlink->param_list, info); |
45f05def MS |
3601 | if (!param_item) |
3602 | return -EINVAL; | |
3603 | ||
3604 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3605 | if (!msg) | |
3606 | return -ENOMEM; | |
3607 | ||
f4601dee | 3608 | err = devlink_nl_param_fill(msg, devlink, 0, param_item, |
45f05def MS |
3609 | DEVLINK_CMD_PARAM_GET, |
3610 | info->snd_portid, info->snd_seq, 0); | |
3611 | if (err) { | |
3612 | nlmsg_free(msg); | |
3613 | return err; | |
3614 | } | |
3615 | ||
3616 | return genlmsg_reply(msg, info); | |
3617 | } | |
3618 | ||
9c54873b | 3619 | static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink, |
c1e5786d | 3620 | unsigned int port_index, |
9c54873b VV |
3621 | struct list_head *param_list, |
3622 | struct genl_info *info, | |
3623 | enum devlink_command cmd) | |
e3b7ca18 | 3624 | { |
e3b7ca18 MS |
3625 | enum devlink_param_type param_type; |
3626 | struct devlink_param_gset_ctx ctx; | |
3627 | enum devlink_param_cmode cmode; | |
3628 | struct devlink_param_item *param_item; | |
3629 | const struct devlink_param *param; | |
3630 | union devlink_param_value value; | |
3631 | int err = 0; | |
3632 | ||
9c54873b | 3633 | param_item = devlink_param_get_from_info(param_list, info); |
e3b7ca18 MS |
3634 | if (!param_item) |
3635 | return -EINVAL; | |
3636 | param = param_item->param; | |
3637 | err = devlink_param_type_get_from_info(info, ¶m_type); | |
3638 | if (err) | |
3639 | return err; | |
3640 | if (param_type != param->type) | |
3641 | return -EINVAL; | |
3642 | err = devlink_param_value_get_from_info(param, info, &value); | |
3643 | if (err) | |
3644 | return err; | |
3645 | if (param->validate) { | |
3646 | err = param->validate(devlink, param->id, value, info->extack); | |
3647 | if (err) | |
3648 | return err; | |
3649 | } | |
3650 | ||
3651 | if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]) | |
3652 | return -EINVAL; | |
3653 | cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]); | |
3654 | if (!devlink_param_cmode_is_supported(param, cmode)) | |
3655 | return -EOPNOTSUPP; | |
3656 | ||
3657 | if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) { | |
1276534c MS |
3658 | if (param->type == DEVLINK_PARAM_TYPE_STRING) |
3659 | strcpy(param_item->driverinit_value.vstr, value.vstr); | |
3660 | else | |
3661 | param_item->driverinit_value = value; | |
e3b7ca18 MS |
3662 | param_item->driverinit_value_valid = true; |
3663 | } else { | |
3664 | if (!param->set) | |
3665 | return -EOPNOTSUPP; | |
3666 | ctx.val = value; | |
3667 | ctx.cmode = cmode; | |
3668 | err = devlink_param_set(devlink, param, &ctx); | |
3669 | if (err) | |
3670 | return err; | |
3671 | } | |
3672 | ||
c1e5786d | 3673 | devlink_param_notify(devlink, port_index, param_item, cmd); |
e3b7ca18 MS |
3674 | return 0; |
3675 | } | |
3676 | ||
9c54873b VV |
3677 | static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb, |
3678 | struct genl_info *info) | |
3679 | { | |
3680 | struct devlink *devlink = info->user_ptr[0]; | |
3681 | ||
c1e5786d | 3682 | return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list, |
9c54873b VV |
3683 | info, DEVLINK_CMD_PARAM_NEW); |
3684 | } | |
3685 | ||
eabaef18 | 3686 | static int devlink_param_register_one(struct devlink *devlink, |
c1e5786d | 3687 | unsigned int port_index, |
39e6160e | 3688 | struct list_head *param_list, |
c1e5786d VV |
3689 | const struct devlink_param *param, |
3690 | enum devlink_command cmd) | |
eabaef18 MS |
3691 | { |
3692 | struct devlink_param_item *param_item; | |
3693 | ||
39e6160e | 3694 | if (devlink_param_find_by_name(param_list, param->name)) |
eabaef18 MS |
3695 | return -EEXIST; |
3696 | ||
3697 | if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
3698 | WARN_ON(param->get || param->set); | |
3699 | else | |
3700 | WARN_ON(!param->get || !param->set); | |
3701 | ||
3702 | param_item = kzalloc(sizeof(*param_item), GFP_KERNEL); | |
3703 | if (!param_item) | |
3704 | return -ENOMEM; | |
3705 | param_item->param = param; | |
3706 | ||
39e6160e | 3707 | list_add_tail(¶m_item->list, param_list); |
c1e5786d | 3708 | devlink_param_notify(devlink, port_index, param_item, cmd); |
eabaef18 MS |
3709 | return 0; |
3710 | } | |
3711 | ||
3712 | static void devlink_param_unregister_one(struct devlink *devlink, | |
c1e5786d | 3713 | unsigned int port_index, |
39e6160e | 3714 | struct list_head *param_list, |
c1e5786d VV |
3715 | const struct devlink_param *param, |
3716 | enum devlink_command cmd) | |
eabaef18 MS |
3717 | { |
3718 | struct devlink_param_item *param_item; | |
3719 | ||
39e6160e | 3720 | param_item = devlink_param_find_by_name(param_list, param->name); |
eabaef18 | 3721 | WARN_ON(!param_item); |
c1e5786d | 3722 | devlink_param_notify(devlink, port_index, param_item, cmd); |
eabaef18 MS |
3723 | list_del(¶m_item->list); |
3724 | kfree(param_item); | |
3725 | } | |
3726 | ||
f4601dee VV |
3727 | static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg, |
3728 | struct netlink_callback *cb) | |
3729 | { | |
3730 | struct devlink_param_item *param_item; | |
3731 | struct devlink_port *devlink_port; | |
3732 | struct devlink *devlink; | |
3733 | int start = cb->args[0]; | |
3734 | int idx = 0; | |
c62c2cfb | 3735 | int err = 0; |
f4601dee VV |
3736 | |
3737 | mutex_lock(&devlink_mutex); | |
3738 | list_for_each_entry(devlink, &devlink_list, list) { | |
3739 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
3740 | continue; | |
3741 | mutex_lock(&devlink->lock); | |
3742 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
3743 | list_for_each_entry(param_item, | |
3744 | &devlink_port->param_list, list) { | |
3745 | if (idx < start) { | |
3746 | idx++; | |
3747 | continue; | |
3748 | } | |
3749 | err = devlink_nl_param_fill(msg, | |
3750 | devlink_port->devlink, | |
3751 | devlink_port->index, param_item, | |
3752 | DEVLINK_CMD_PORT_PARAM_GET, | |
3753 | NETLINK_CB(cb->skb).portid, | |
3754 | cb->nlh->nlmsg_seq, | |
3755 | NLM_F_MULTI); | |
82274d07 JK |
3756 | if (err == -EOPNOTSUPP) { |
3757 | err = 0; | |
3758 | } else if (err) { | |
f4601dee VV |
3759 | mutex_unlock(&devlink->lock); |
3760 | goto out; | |
3761 | } | |
3762 | idx++; | |
3763 | } | |
3764 | } | |
3765 | mutex_unlock(&devlink->lock); | |
3766 | } | |
3767 | out: | |
3768 | mutex_unlock(&devlink_mutex); | |
3769 | ||
c62c2cfb JP |
3770 | if (err != -EMSGSIZE) |
3771 | return err; | |
3772 | ||
f4601dee VV |
3773 | cb->args[0] = idx; |
3774 | return msg->len; | |
3775 | } | |
3776 | ||
3777 | static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb, | |
3778 | struct genl_info *info) | |
3779 | { | |
3780 | struct devlink_port *devlink_port = info->user_ptr[0]; | |
3781 | struct devlink_param_item *param_item; | |
3782 | struct sk_buff *msg; | |
3783 | int err; | |
3784 | ||
3785 | param_item = devlink_param_get_from_info(&devlink_port->param_list, | |
3786 | info); | |
3787 | if (!param_item) | |
3788 | return -EINVAL; | |
3789 | ||
3790 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3791 | if (!msg) | |
3792 | return -ENOMEM; | |
3793 | ||
3794 | err = devlink_nl_param_fill(msg, devlink_port->devlink, | |
3795 | devlink_port->index, param_item, | |
3796 | DEVLINK_CMD_PORT_PARAM_GET, | |
3797 | info->snd_portid, info->snd_seq, 0); | |
3798 | if (err) { | |
3799 | nlmsg_free(msg); | |
3800 | return err; | |
3801 | } | |
3802 | ||
3803 | return genlmsg_reply(msg, info); | |
3804 | } | |
3805 | ||
9c54873b VV |
3806 | static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb, |
3807 | struct genl_info *info) | |
3808 | { | |
3809 | struct devlink_port *devlink_port = info->user_ptr[0]; | |
3810 | ||
3811 | return __devlink_nl_cmd_param_set_doit(devlink_port->devlink, | |
c1e5786d VV |
3812 | devlink_port->index, |
3813 | &devlink_port->param_list, info, | |
3814 | DEVLINK_CMD_PORT_PARAM_NEW); | |
9c54873b VV |
3815 | } |
3816 | ||
a006d467 AV |
3817 | static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg, |
3818 | struct devlink *devlink, | |
3819 | struct devlink_snapshot *snapshot) | |
3820 | { | |
3821 | struct nlattr *snap_attr; | |
3822 | int err; | |
3823 | ||
ae0be8de | 3824 | snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT); |
a006d467 AV |
3825 | if (!snap_attr) |
3826 | return -EINVAL; | |
3827 | ||
3828 | err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id); | |
3829 | if (err) | |
3830 | goto nla_put_failure; | |
3831 | ||
3832 | nla_nest_end(msg, snap_attr); | |
3833 | return 0; | |
3834 | ||
3835 | nla_put_failure: | |
3836 | nla_nest_cancel(msg, snap_attr); | |
3837 | return err; | |
3838 | } | |
3839 | ||
3840 | static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg, | |
3841 | struct devlink *devlink, | |
3842 | struct devlink_region *region) | |
3843 | { | |
3844 | struct devlink_snapshot *snapshot; | |
3845 | struct nlattr *snapshots_attr; | |
3846 | int err; | |
3847 | ||
ae0be8de MK |
3848 | snapshots_attr = nla_nest_start_noflag(msg, |
3849 | DEVLINK_ATTR_REGION_SNAPSHOTS); | |
a006d467 AV |
3850 | if (!snapshots_attr) |
3851 | return -EINVAL; | |
3852 | ||
3853 | list_for_each_entry(snapshot, ®ion->snapshot_list, list) { | |
3854 | err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot); | |
3855 | if (err) | |
3856 | goto nla_put_failure; | |
3857 | } | |
3858 | ||
3859 | nla_nest_end(msg, snapshots_attr); | |
3860 | return 0; | |
3861 | ||
3862 | nla_put_failure: | |
3863 | nla_nest_cancel(msg, snapshots_attr); | |
3864 | return err; | |
3865 | } | |
3866 | ||
d8db7ea5 AV |
3867 | static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink, |
3868 | enum devlink_command cmd, u32 portid, | |
3869 | u32 seq, int flags, | |
3870 | struct devlink_region *region) | |
3871 | { | |
3872 | void *hdr; | |
3873 | int err; | |
3874 | ||
3875 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
3876 | if (!hdr) | |
3877 | return -EMSGSIZE; | |
3878 | ||
3879 | err = devlink_nl_put_handle(msg, devlink); | |
3880 | if (err) | |
3881 | goto nla_put_failure; | |
3882 | ||
e8937681 | 3883 | err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name); |
d8db7ea5 AV |
3884 | if (err) |
3885 | goto nla_put_failure; | |
3886 | ||
3887 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, | |
3888 | region->size, | |
3889 | DEVLINK_ATTR_PAD); | |
3890 | if (err) | |
3891 | goto nla_put_failure; | |
3892 | ||
a006d467 AV |
3893 | err = devlink_nl_region_snapshots_id_put(msg, devlink, region); |
3894 | if (err) | |
3895 | goto nla_put_failure; | |
3896 | ||
d8db7ea5 AV |
3897 | genlmsg_end(msg, hdr); |
3898 | return 0; | |
3899 | ||
3900 | nla_put_failure: | |
3901 | genlmsg_cancel(msg, hdr); | |
3902 | return err; | |
3903 | } | |
3904 | ||
dd86fec7 JK |
3905 | static struct sk_buff * |
3906 | devlink_nl_region_notify_build(struct devlink_region *region, | |
3907 | struct devlink_snapshot *snapshot, | |
3908 | enum devlink_command cmd, u32 portid, u32 seq) | |
866319bb AV |
3909 | { |
3910 | struct devlink *devlink = region->devlink; | |
3911 | struct sk_buff *msg; | |
3912 | void *hdr; | |
3913 | int err; | |
3914 | ||
866319bb AV |
3915 | |
3916 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3917 | if (!msg) | |
dd86fec7 | 3918 | return ERR_PTR(-ENOMEM); |
866319bb | 3919 | |
dd86fec7 JK |
3920 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd); |
3921 | if (!hdr) { | |
3922 | err = -EMSGSIZE; | |
866319bb | 3923 | goto out_free_msg; |
dd86fec7 | 3924 | } |
866319bb AV |
3925 | |
3926 | err = devlink_nl_put_handle(msg, devlink); | |
3927 | if (err) | |
3928 | goto out_cancel_msg; | |
3929 | ||
3930 | err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, | |
e8937681 | 3931 | region->ops->name); |
866319bb AV |
3932 | if (err) |
3933 | goto out_cancel_msg; | |
3934 | ||
3935 | if (snapshot) { | |
3936 | err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, | |
3937 | snapshot->id); | |
3938 | if (err) | |
3939 | goto out_cancel_msg; | |
3940 | } else { | |
3941 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, | |
3942 | region->size, DEVLINK_ATTR_PAD); | |
3943 | if (err) | |
3944 | goto out_cancel_msg; | |
3945 | } | |
3946 | genlmsg_end(msg, hdr); | |
3947 | ||
dd86fec7 | 3948 | return msg; |
866319bb AV |
3949 | |
3950 | out_cancel_msg: | |
3951 | genlmsg_cancel(msg, hdr); | |
3952 | out_free_msg: | |
3953 | nlmsg_free(msg); | |
dd86fec7 JK |
3954 | return ERR_PTR(err); |
3955 | } | |
3956 | ||
3957 | static void devlink_nl_region_notify(struct devlink_region *region, | |
3958 | struct devlink_snapshot *snapshot, | |
3959 | enum devlink_command cmd) | |
3960 | { | |
3961 | struct devlink *devlink = region->devlink; | |
3962 | struct sk_buff *msg; | |
3963 | ||
3964 | WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL); | |
3965 | ||
3966 | msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0); | |
3967 | if (IS_ERR(msg)) | |
3968 | return; | |
3969 | ||
3970 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3971 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
866319bb AV |
3972 | } |
3973 | ||
12102436 JK |
3974 | /** |
3975 | * __devlink_snapshot_id_increment - Increment number of snapshots using an id | |
3976 | * @devlink: devlink instance | |
3977 | * @id: the snapshot id | |
3978 | * | |
3979 | * Track when a new snapshot begins using an id. Load the count for the | |
3980 | * given id from the snapshot xarray, increment it, and store it back. | |
3981 | * | |
3982 | * Called when a new snapshot is created with the given id. | |
3983 | * | |
3984 | * The id *must* have been previously allocated by | |
3985 | * devlink_region_snapshot_id_get(). | |
3986 | * | |
3987 | * Returns 0 on success, or an error on failure. | |
3988 | */ | |
3989 | static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id) | |
3990 | { | |
3991 | unsigned long count; | |
3992 | void *p; | |
3993 | ||
3994 | lockdep_assert_held(&devlink->lock); | |
3995 | ||
3996 | p = xa_load(&devlink->snapshot_ids, id); | |
3997 | if (WARN_ON(!p)) | |
3998 | return -EINVAL; | |
3999 | ||
4000 | if (WARN_ON(!xa_is_value(p))) | |
4001 | return -EINVAL; | |
4002 | ||
4003 | count = xa_to_value(p); | |
4004 | count++; | |
4005 | ||
4006 | return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), | |
4007 | GFP_KERNEL)); | |
4008 | } | |
4009 | ||
4010 | /** | |
4011 | * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id | |
4012 | * @devlink: devlink instance | |
4013 | * @id: the snapshot id | |
4014 | * | |
4015 | * Track when a snapshot is deleted and stops using an id. Load the count | |
4016 | * for the given id from the snapshot xarray, decrement it, and store it | |
4017 | * back. | |
4018 | * | |
4019 | * If the count reaches zero, erase this id from the xarray, freeing it | |
4020 | * up for future re-use by devlink_region_snapshot_id_get(). | |
4021 | * | |
4022 | * Called when a snapshot using the given id is deleted, and when the | |
4023 | * initial allocator of the id is finished using it. | |
4024 | */ | |
4025 | static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id) | |
4026 | { | |
4027 | unsigned long count; | |
4028 | void *p; | |
4029 | ||
4030 | lockdep_assert_held(&devlink->lock); | |
4031 | ||
4032 | p = xa_load(&devlink->snapshot_ids, id); | |
4033 | if (WARN_ON(!p)) | |
4034 | return; | |
4035 | ||
4036 | if (WARN_ON(!xa_is_value(p))) | |
4037 | return; | |
4038 | ||
4039 | count = xa_to_value(p); | |
4040 | ||
4041 | if (count > 1) { | |
4042 | count--; | |
4043 | xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), | |
4044 | GFP_KERNEL); | |
4045 | } else { | |
4046 | /* If this was the last user, we can erase this id */ | |
4047 | xa_erase(&devlink->snapshot_ids, id); | |
4048 | } | |
4049 | } | |
4050 | ||
b9a17abf JK |
4051 | /** |
4052 | * __devlink_snapshot_id_insert - Insert a specific snapshot ID | |
4053 | * @devlink: devlink instance | |
4054 | * @id: the snapshot id | |
4055 | * | |
4056 | * Mark the given snapshot id as used by inserting a zero value into the | |
4057 | * snapshot xarray. | |
4058 | * | |
4059 | * This must be called while holding the devlink instance lock. Unlike | |
4060 | * devlink_snapshot_id_get, the initial reference count is zero, not one. | |
4061 | * It is expected that the id will immediately be used before | |
4062 | * releasing the devlink instance lock. | |
4063 | * | |
4064 | * Returns zero on success, or an error code if the snapshot id could not | |
4065 | * be inserted. | |
4066 | */ | |
4067 | static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id) | |
4068 | { | |
4069 | lockdep_assert_held(&devlink->lock); | |
4070 | ||
bd71ea60 | 4071 | if (xa_load(&devlink->snapshot_ids, id)) |
b9a17abf JK |
4072 | return -EEXIST; |
4073 | ||
4074 | return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0), | |
4075 | GFP_KERNEL)); | |
4076 | } | |
4077 | ||
7000108f JK |
4078 | /** |
4079 | * __devlink_region_snapshot_id_get - get snapshot ID | |
4080 | * @devlink: devlink instance | |
7ef19d3b | 4081 | * @id: storage to return snapshot id |
7000108f | 4082 | * |
7ef19d3b JK |
4083 | * Allocates a new snapshot id. Returns zero on success, or a negative |
4084 | * error on failure. Must be called while holding the devlink instance | |
4085 | * lock. | |
12102436 JK |
4086 | * |
4087 | * Snapshot IDs are tracked using an xarray which stores the number of | |
4088 | * users of the snapshot id. | |
4089 | * | |
4090 | * Note that the caller of this function counts as a 'user', in order to | |
4091 | * avoid race conditions. The caller must release its hold on the | |
4092 | * snapshot by using devlink_region_snapshot_id_put. | |
7000108f | 4093 | */ |
7ef19d3b | 4094 | static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) |
7000108f JK |
4095 | { |
4096 | lockdep_assert_held(&devlink->lock); | |
7ef19d3b | 4097 | |
12102436 JK |
4098 | return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1), |
4099 | xa_limit_32b, GFP_KERNEL); | |
7000108f JK |
4100 | } |
4101 | ||
cf80faee JK |
4102 | /** |
4103 | * __devlink_region_snapshot_create - create a new snapshot | |
4104 | * This will add a new snapshot of a region. The snapshot | |
4105 | * will be stored on the region struct and can be accessed | |
4106 | * from devlink. This is useful for future analyses of snapshots. | |
4107 | * Multiple snapshots can be created on a region. | |
4108 | * The @snapshot_id should be obtained using the getter function. | |
4109 | * | |
4110 | * Must be called only while holding the devlink instance lock. | |
4111 | * | |
4112 | * @region: devlink region of the snapshot | |
4113 | * @data: snapshot data | |
4114 | * @snapshot_id: snapshot id to be created | |
4115 | */ | |
4116 | static int | |
4117 | __devlink_region_snapshot_create(struct devlink_region *region, | |
4118 | u8 *data, u32 snapshot_id) | |
4119 | { | |
4120 | struct devlink *devlink = region->devlink; | |
4121 | struct devlink_snapshot *snapshot; | |
12102436 | 4122 | int err; |
cf80faee JK |
4123 | |
4124 | lockdep_assert_held(&devlink->lock); | |
4125 | ||
4126 | /* check if region can hold one more snapshot */ | |
4127 | if (region->cur_snapshots == region->max_snapshots) | |
47a39f61 | 4128 | return -ENOSPC; |
cf80faee JK |
4129 | |
4130 | if (devlink_region_snapshot_get_by_id(region, snapshot_id)) | |
4131 | return -EEXIST; | |
4132 | ||
4133 | snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL); | |
4134 | if (!snapshot) | |
4135 | return -ENOMEM; | |
4136 | ||
12102436 JK |
4137 | err = __devlink_snapshot_id_increment(devlink, snapshot_id); |
4138 | if (err) | |
4139 | goto err_snapshot_id_increment; | |
4140 | ||
cf80faee JK |
4141 | snapshot->id = snapshot_id; |
4142 | snapshot->region = region; | |
4143 | snapshot->data = data; | |
4144 | ||
4145 | list_add_tail(&snapshot->list, ®ion->snapshot_list); | |
4146 | ||
4147 | region->cur_snapshots++; | |
4148 | ||
4149 | devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW); | |
4150 | return 0; | |
12102436 JK |
4151 | |
4152 | err_snapshot_id_increment: | |
4153 | kfree(snapshot); | |
4154 | return err; | |
cf80faee JK |
4155 | } |
4156 | ||
92b49822 JP |
4157 | static void devlink_region_snapshot_del(struct devlink_region *region, |
4158 | struct devlink_snapshot *snapshot) | |
4159 | { | |
12102436 JK |
4160 | struct devlink *devlink = region->devlink; |
4161 | ||
4162 | lockdep_assert_held(&devlink->lock); | |
4163 | ||
92b49822 JP |
4164 | devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL); |
4165 | region->cur_snapshots--; | |
4166 | list_del(&snapshot->list); | |
a0a09f6b | 4167 | region->ops->destructor(snapshot->data); |
12102436 | 4168 | __devlink_snapshot_id_decrement(devlink, snapshot->id); |
92b49822 JP |
4169 | kfree(snapshot); |
4170 | } | |
4171 | ||
d8db7ea5 AV |
4172 | static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb, |
4173 | struct genl_info *info) | |
4174 | { | |
4175 | struct devlink *devlink = info->user_ptr[0]; | |
4176 | struct devlink_region *region; | |
4177 | const char *region_name; | |
4178 | struct sk_buff *msg; | |
4179 | int err; | |
4180 | ||
4181 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) | |
4182 | return -EINVAL; | |
4183 | ||
4184 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); | |
4185 | region = devlink_region_get_by_name(devlink, region_name); | |
4186 | if (!region) | |
4187 | return -EINVAL; | |
4188 | ||
4189 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4190 | if (!msg) | |
4191 | return -ENOMEM; | |
4192 | ||
4193 | err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, | |
4194 | info->snd_portid, info->snd_seq, 0, | |
4195 | region); | |
4196 | if (err) { | |
4197 | nlmsg_free(msg); | |
4198 | return err; | |
4199 | } | |
4200 | ||
4201 | return genlmsg_reply(msg, info); | |
4202 | } | |
4203 | ||
4204 | static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg, | |
4205 | struct netlink_callback *cb) | |
4206 | { | |
4207 | struct devlink_region *region; | |
4208 | struct devlink *devlink; | |
4209 | int start = cb->args[0]; | |
4210 | int idx = 0; | |
4211 | int err; | |
4212 | ||
4213 | mutex_lock(&devlink_mutex); | |
4214 | list_for_each_entry(devlink, &devlink_list, list) { | |
4215 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4216 | continue; | |
4217 | ||
4218 | mutex_lock(&devlink->lock); | |
4219 | list_for_each_entry(region, &devlink->region_list, list) { | |
4220 | if (idx < start) { | |
4221 | idx++; | |
4222 | continue; | |
4223 | } | |
4224 | err = devlink_nl_region_fill(msg, devlink, | |
4225 | DEVLINK_CMD_REGION_GET, | |
4226 | NETLINK_CB(cb->skb).portid, | |
4227 | cb->nlh->nlmsg_seq, | |
4228 | NLM_F_MULTI, region); | |
4229 | if (err) { | |
4230 | mutex_unlock(&devlink->lock); | |
4231 | goto out; | |
4232 | } | |
4233 | idx++; | |
4234 | } | |
4235 | mutex_unlock(&devlink->lock); | |
4236 | } | |
4237 | out: | |
4238 | mutex_unlock(&devlink_mutex); | |
4239 | cb->args[0] = idx; | |
4240 | return msg->len; | |
4241 | } | |
4242 | ||
866319bb AV |
4243 | static int devlink_nl_cmd_region_del(struct sk_buff *skb, |
4244 | struct genl_info *info) | |
4245 | { | |
4246 | struct devlink *devlink = info->user_ptr[0]; | |
4247 | struct devlink_snapshot *snapshot; | |
4248 | struct devlink_region *region; | |
4249 | const char *region_name; | |
4250 | u32 snapshot_id; | |
4251 | ||
4252 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME] || | |
4253 | !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) | |
4254 | return -EINVAL; | |
4255 | ||
4256 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); | |
4257 | snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); | |
4258 | ||
4259 | region = devlink_region_get_by_name(devlink, region_name); | |
4260 | if (!region) | |
4261 | return -EINVAL; | |
4262 | ||
4263 | snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); | |
4264 | if (!snapshot) | |
4265 | return -EINVAL; | |
4266 | ||
92b49822 | 4267 | devlink_region_snapshot_del(region, snapshot); |
866319bb AV |
4268 | return 0; |
4269 | } | |
4270 | ||
b9a17abf JK |
4271 | static int |
4272 | devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info) | |
4273 | { | |
4274 | struct devlink *devlink = info->user_ptr[0]; | |
043b3e22 JK |
4275 | struct devlink_snapshot *snapshot; |
4276 | struct nlattr *snapshot_id_attr; | |
b9a17abf JK |
4277 | struct devlink_region *region; |
4278 | const char *region_name; | |
4279 | u32 snapshot_id; | |
4280 | u8 *data; | |
4281 | int err; | |
4282 | ||
4283 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) { | |
4284 | NL_SET_ERR_MSG_MOD(info->extack, "No region name provided"); | |
4285 | return -EINVAL; | |
4286 | } | |
4287 | ||
b9a17abf JK |
4288 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); |
4289 | region = devlink_region_get_by_name(devlink, region_name); | |
4290 | if (!region) { | |
4291 | NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist"); | |
4292 | return -EINVAL; | |
4293 | } | |
4294 | ||
4295 | if (!region->ops->snapshot) { | |
4296 | NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot"); | |
4297 | return -EOPNOTSUPP; | |
4298 | } | |
4299 | ||
4300 | if (region->cur_snapshots == region->max_snapshots) { | |
4301 | NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots"); | |
4302 | return -ENOSPC; | |
4303 | } | |
4304 | ||
043b3e22 JK |
4305 | snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]; |
4306 | if (snapshot_id_attr) { | |
4307 | snapshot_id = nla_get_u32(snapshot_id_attr); | |
b9a17abf | 4308 | |
043b3e22 JK |
4309 | if (devlink_region_snapshot_get_by_id(region, snapshot_id)) { |
4310 | NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use"); | |
4311 | return -EEXIST; | |
4312 | } | |
b9a17abf | 4313 | |
043b3e22 JK |
4314 | err = __devlink_snapshot_id_insert(devlink, snapshot_id); |
4315 | if (err) | |
4316 | return err; | |
4317 | } else { | |
4318 | err = __devlink_region_snapshot_id_get(devlink, &snapshot_id); | |
4319 | if (err) { | |
4320 | NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id"); | |
4321 | return err; | |
4322 | } | |
4323 | } | |
b9a17abf JK |
4324 | |
4325 | err = region->ops->snapshot(devlink, info->extack, &data); | |
4326 | if (err) | |
4327 | goto err_snapshot_capture; | |
4328 | ||
4329 | err = __devlink_region_snapshot_create(region, data, snapshot_id); | |
4330 | if (err) | |
4331 | goto err_snapshot_create; | |
4332 | ||
043b3e22 JK |
4333 | if (!snapshot_id_attr) { |
4334 | struct sk_buff *msg; | |
4335 | ||
4336 | snapshot = devlink_region_snapshot_get_by_id(region, | |
4337 | snapshot_id); | |
4338 | if (WARN_ON(!snapshot)) | |
4339 | return -EINVAL; | |
4340 | ||
4341 | msg = devlink_nl_region_notify_build(region, snapshot, | |
4342 | DEVLINK_CMD_REGION_NEW, | |
4343 | info->snd_portid, | |
4344 | info->snd_seq); | |
4345 | err = PTR_ERR_OR_ZERO(msg); | |
4346 | if (err) | |
4347 | goto err_notify; | |
4348 | ||
4349 | err = genlmsg_reply(msg, info); | |
4350 | if (err) | |
4351 | goto err_notify; | |
4352 | } | |
4353 | ||
b9a17abf JK |
4354 | return 0; |
4355 | ||
4356 | err_snapshot_create: | |
4357 | region->ops->destructor(data); | |
4358 | err_snapshot_capture: | |
4359 | __devlink_snapshot_id_decrement(devlink, snapshot_id); | |
4360 | return err; | |
043b3e22 JK |
4361 | |
4362 | err_notify: | |
4363 | devlink_region_snapshot_del(region, snapshot); | |
4364 | return err; | |
b9a17abf JK |
4365 | } |
4366 | ||
4e54795a AV |
4367 | static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg, |
4368 | struct devlink *devlink, | |
4369 | u8 *chunk, u32 chunk_size, | |
4370 | u64 addr) | |
4371 | { | |
4372 | struct nlattr *chunk_attr; | |
4373 | int err; | |
4374 | ||
ae0be8de | 4375 | chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK); |
4e54795a AV |
4376 | if (!chunk_attr) |
4377 | return -EINVAL; | |
4378 | ||
4379 | err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk); | |
4380 | if (err) | |
4381 | goto nla_put_failure; | |
4382 | ||
4383 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr, | |
4384 | DEVLINK_ATTR_PAD); | |
4385 | if (err) | |
4386 | goto nla_put_failure; | |
4387 | ||
4388 | nla_nest_end(msg, chunk_attr); | |
4389 | return 0; | |
4390 | ||
4391 | nla_put_failure: | |
4392 | nla_nest_cancel(msg, chunk_attr); | |
4393 | return err; | |
4394 | } | |
4395 | ||
4396 | #define DEVLINK_REGION_READ_CHUNK_SIZE 256 | |
4397 | ||
4398 | static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb, | |
4399 | struct devlink *devlink, | |
4400 | struct devlink_region *region, | |
4401 | struct nlattr **attrs, | |
4402 | u64 start_offset, | |
4403 | u64 end_offset, | |
4e54795a AV |
4404 | u64 *new_offset) |
4405 | { | |
4406 | struct devlink_snapshot *snapshot; | |
4407 | u64 curr_offset = start_offset; | |
4408 | u32 snapshot_id; | |
4409 | int err = 0; | |
4410 | ||
4411 | *new_offset = start_offset; | |
4412 | ||
4413 | snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); | |
4414 | snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); | |
4415 | if (!snapshot) | |
4416 | return -EINVAL; | |
4417 | ||
4e54795a AV |
4418 | while (curr_offset < end_offset) { |
4419 | u32 data_size; | |
4420 | u8 *data; | |
4421 | ||
4422 | if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE) | |
4423 | data_size = end_offset - curr_offset; | |
4424 | else | |
4425 | data_size = DEVLINK_REGION_READ_CHUNK_SIZE; | |
4426 | ||
4427 | data = &snapshot->data[curr_offset]; | |
4428 | err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink, | |
4429 | data, data_size, | |
4430 | curr_offset); | |
4431 | if (err) | |
4432 | break; | |
4433 | ||
4434 | curr_offset += data_size; | |
4435 | } | |
4436 | *new_offset = curr_offset; | |
4437 | ||
4438 | return err; | |
4439 | } | |
4440 | ||
4441 | static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, | |
4442 | struct netlink_callback *cb) | |
4443 | { | |
ee85da53 | 4444 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
5a46b062 | 4445 | u64 ret_offset, start_offset, end_offset = U64_MAX; |
ee85da53 | 4446 | struct nlattr **attrs = info->attrs; |
4e54795a AV |
4447 | struct devlink_region *region; |
4448 | struct nlattr *chunks_attr; | |
4449 | const char *region_name; | |
4450 | struct devlink *devlink; | |
4e54795a AV |
4451 | void *hdr; |
4452 | int err; | |
4453 | ||
4454 | start_offset = *((u64 *)&cb->args[0]); | |
4455 | ||
dac7c08f | 4456 | mutex_lock(&devlink_mutex); |
4e54795a | 4457 | devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); |
fdd41ec2 PP |
4458 | if (IS_ERR(devlink)) { |
4459 | err = PTR_ERR(devlink); | |
dac7c08f | 4460 | goto out_dev; |
fdd41ec2 | 4461 | } |
4e54795a | 4462 | |
4e54795a AV |
4463 | mutex_lock(&devlink->lock); |
4464 | ||
4465 | if (!attrs[DEVLINK_ATTR_REGION_NAME] || | |
fdd41ec2 PP |
4466 | !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) { |
4467 | err = -EINVAL; | |
4e54795a | 4468 | goto out_unlock; |
fdd41ec2 | 4469 | } |
4e54795a AV |
4470 | |
4471 | region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]); | |
4472 | region = devlink_region_get_by_name(devlink, region_name); | |
fdd41ec2 PP |
4473 | if (!region) { |
4474 | err = -EINVAL; | |
4e54795a | 4475 | goto out_unlock; |
fdd41ec2 | 4476 | } |
4e54795a | 4477 | |
5a46b062 JK |
4478 | if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] && |
4479 | attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) { | |
4480 | if (!start_offset) | |
4481 | start_offset = | |
4482 | nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); | |
4483 | ||
4484 | end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); | |
4485 | end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]); | |
4486 | } | |
4487 | ||
4488 | if (end_offset > region->size) | |
4489 | end_offset = region->size; | |
4490 | ||
d5b90e99 | 4491 | /* return 0 if there is no further data to read */ |
5a46b062 | 4492 | if (start_offset == end_offset) { |
d5b90e99 JK |
4493 | err = 0; |
4494 | goto out_unlock; | |
4495 | } | |
4496 | ||
4e54795a AV |
4497 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
4498 | &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, | |
4499 | DEVLINK_CMD_REGION_READ); | |
fdd41ec2 PP |
4500 | if (!hdr) { |
4501 | err = -EMSGSIZE; | |
4e54795a | 4502 | goto out_unlock; |
fdd41ec2 | 4503 | } |
4e54795a AV |
4504 | |
4505 | err = devlink_nl_put_handle(skb, devlink); | |
4506 | if (err) | |
4507 | goto nla_put_failure; | |
4508 | ||
4509 | err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name); | |
4510 | if (err) | |
4511 | goto nla_put_failure; | |
4512 | ||
ae0be8de | 4513 | chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS); |
fdd41ec2 PP |
4514 | if (!chunks_attr) { |
4515 | err = -EMSGSIZE; | |
4e54795a | 4516 | goto nla_put_failure; |
fdd41ec2 | 4517 | } |
4e54795a | 4518 | |
4e54795a AV |
4519 | err = devlink_nl_region_read_snapshot_fill(skb, devlink, |
4520 | region, attrs, | |
4521 | start_offset, | |
5a46b062 | 4522 | end_offset, &ret_offset); |
4e54795a AV |
4523 | |
4524 | if (err && err != -EMSGSIZE) | |
4525 | goto nla_put_failure; | |
4526 | ||
4527 | /* Check if there was any progress done to prevent infinite loop */ | |
fdd41ec2 PP |
4528 | if (ret_offset == start_offset) { |
4529 | err = -EINVAL; | |
4e54795a | 4530 | goto nla_put_failure; |
fdd41ec2 | 4531 | } |
4e54795a AV |
4532 | |
4533 | *((u64 *)&cb->args[0]) = ret_offset; | |
4534 | ||
4535 | nla_nest_end(skb, chunks_attr); | |
4536 | genlmsg_end(skb, hdr); | |
4537 | mutex_unlock(&devlink->lock); | |
4538 | mutex_unlock(&devlink_mutex); | |
4539 | ||
4540 | return skb->len; | |
4541 | ||
4542 | nla_put_failure: | |
4543 | genlmsg_cancel(skb, hdr); | |
4544 | out_unlock: | |
4545 | mutex_unlock(&devlink->lock); | |
dac7c08f | 4546 | out_dev: |
4e54795a | 4547 | mutex_unlock(&devlink_mutex); |
fdd41ec2 | 4548 | return err; |
4e54795a AV |
4549 | } |
4550 | ||
f9cf2288 JK |
4551 | struct devlink_info_req { |
4552 | struct sk_buff *msg; | |
4553 | }; | |
4554 | ||
4555 | int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name) | |
4556 | { | |
4557 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name); | |
4558 | } | |
4559 | EXPORT_SYMBOL_GPL(devlink_info_driver_name_put); | |
4560 | ||
4561 | int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn) | |
4562 | { | |
4563 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn); | |
4564 | } | |
4565 | EXPORT_SYMBOL_GPL(devlink_info_serial_number_put); | |
4566 | ||
b5872cd0 VV |
4567 | int devlink_info_board_serial_number_put(struct devlink_info_req *req, |
4568 | const char *bsn) | |
4569 | { | |
4570 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER, | |
4571 | bsn); | |
4572 | } | |
4573 | EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put); | |
4574 | ||
fc6fae7d JK |
4575 | static int devlink_info_version_put(struct devlink_info_req *req, int attr, |
4576 | const char *version_name, | |
4577 | const char *version_value) | |
4578 | { | |
4579 | struct nlattr *nest; | |
4580 | int err; | |
4581 | ||
ae0be8de | 4582 | nest = nla_nest_start_noflag(req->msg, attr); |
fc6fae7d JK |
4583 | if (!nest) |
4584 | return -EMSGSIZE; | |
4585 | ||
4586 | err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME, | |
4587 | version_name); | |
4588 | if (err) | |
4589 | goto nla_put_failure; | |
4590 | ||
4591 | err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE, | |
4592 | version_value); | |
4593 | if (err) | |
4594 | goto nla_put_failure; | |
4595 | ||
4596 | nla_nest_end(req->msg, nest); | |
4597 | ||
4598 | return 0; | |
4599 | ||
4600 | nla_put_failure: | |
4601 | nla_nest_cancel(req->msg, nest); | |
4602 | return err; | |
4603 | } | |
4604 | ||
4605 | int devlink_info_version_fixed_put(struct devlink_info_req *req, | |
4606 | const char *version_name, | |
4607 | const char *version_value) | |
4608 | { | |
4609 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED, | |
4610 | version_name, version_value); | |
4611 | } | |
4612 | EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put); | |
4613 | ||
4614 | int devlink_info_version_stored_put(struct devlink_info_req *req, | |
4615 | const char *version_name, | |
4616 | const char *version_value) | |
4617 | { | |
4618 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED, | |
4619 | version_name, version_value); | |
4620 | } | |
4621 | EXPORT_SYMBOL_GPL(devlink_info_version_stored_put); | |
4622 | ||
4623 | int devlink_info_version_running_put(struct devlink_info_req *req, | |
4624 | const char *version_name, | |
4625 | const char *version_value) | |
4626 | { | |
4627 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING, | |
4628 | version_name, version_value); | |
4629 | } | |
4630 | EXPORT_SYMBOL_GPL(devlink_info_version_running_put); | |
4631 | ||
f9cf2288 JK |
4632 | static int |
4633 | devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink, | |
4634 | enum devlink_command cmd, u32 portid, | |
4635 | u32 seq, int flags, struct netlink_ext_ack *extack) | |
4636 | { | |
4637 | struct devlink_info_req req; | |
4638 | void *hdr; | |
4639 | int err; | |
4640 | ||
4641 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
4642 | if (!hdr) | |
4643 | return -EMSGSIZE; | |
4644 | ||
4645 | err = -EMSGSIZE; | |
4646 | if (devlink_nl_put_handle(msg, devlink)) | |
4647 | goto err_cancel_msg; | |
4648 | ||
4649 | req.msg = msg; | |
4650 | err = devlink->ops->info_get(devlink, &req, extack); | |
4651 | if (err) | |
4652 | goto err_cancel_msg; | |
4653 | ||
4654 | genlmsg_end(msg, hdr); | |
4655 | return 0; | |
4656 | ||
4657 | err_cancel_msg: | |
4658 | genlmsg_cancel(msg, hdr); | |
4659 | return err; | |
4660 | } | |
4661 | ||
4662 | static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb, | |
4663 | struct genl_info *info) | |
4664 | { | |
4665 | struct devlink *devlink = info->user_ptr[0]; | |
4666 | struct sk_buff *msg; | |
4667 | int err; | |
4668 | ||
be6fe1d8 | 4669 | if (!devlink->ops->info_get) |
f9cf2288 JK |
4670 | return -EOPNOTSUPP; |
4671 | ||
4672 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4673 | if (!msg) | |
4674 | return -ENOMEM; | |
4675 | ||
4676 | err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, | |
4677 | info->snd_portid, info->snd_seq, 0, | |
4678 | info->extack); | |
4679 | if (err) { | |
4680 | nlmsg_free(msg); | |
4681 | return err; | |
4682 | } | |
4683 | ||
4684 | return genlmsg_reply(msg, info); | |
4685 | } | |
4686 | ||
4687 | static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg, | |
4688 | struct netlink_callback *cb) | |
4689 | { | |
4690 | struct devlink *devlink; | |
4691 | int start = cb->args[0]; | |
4692 | int idx = 0; | |
c62c2cfb | 4693 | int err = 0; |
f9cf2288 JK |
4694 | |
4695 | mutex_lock(&devlink_mutex); | |
4696 | list_for_each_entry(devlink, &devlink_list, list) { | |
4697 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4698 | continue; | |
4699 | if (idx < start) { | |
4700 | idx++; | |
4701 | continue; | |
4702 | } | |
4703 | ||
c493b09b JP |
4704 | if (!devlink->ops->info_get) { |
4705 | idx++; | |
4706 | continue; | |
4707 | } | |
4708 | ||
f9cf2288 JK |
4709 | mutex_lock(&devlink->lock); |
4710 | err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, | |
4711 | NETLINK_CB(cb->skb).portid, | |
4712 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
4713 | cb->extack); | |
4714 | mutex_unlock(&devlink->lock); | |
82274d07 JK |
4715 | if (err == -EOPNOTSUPP) |
4716 | err = 0; | |
4717 | else if (err) | |
f9cf2288 JK |
4718 | break; |
4719 | idx++; | |
4720 | } | |
4721 | mutex_unlock(&devlink_mutex); | |
4722 | ||
c62c2cfb JP |
4723 | if (err != -EMSGSIZE) |
4724 | return err; | |
4725 | ||
f9cf2288 JK |
4726 | cb->args[0] = idx; |
4727 | return msg->len; | |
4728 | } | |
4729 | ||
1db64e87 EBE |
4730 | struct devlink_fmsg_item { |
4731 | struct list_head list; | |
4732 | int attrtype; | |
4733 | u8 nla_type; | |
4734 | u16 len; | |
d2afb41a | 4735 | int value[]; |
1db64e87 EBE |
4736 | }; |
4737 | ||
4738 | struct devlink_fmsg { | |
4739 | struct list_head item_list; | |
573ed90a AL |
4740 | bool putting_binary; /* This flag forces enclosing of binary data |
4741 | * in an array brackets. It forces using | |
4742 | * of designated API: | |
4743 | * devlink_fmsg_binary_pair_nest_start() | |
4744 | * devlink_fmsg_binary_pair_nest_end() | |
4745 | */ | |
1db64e87 EBE |
4746 | }; |
4747 | ||
4748 | static struct devlink_fmsg *devlink_fmsg_alloc(void) | |
4749 | { | |
4750 | struct devlink_fmsg *fmsg; | |
4751 | ||
4752 | fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL); | |
4753 | if (!fmsg) | |
4754 | return NULL; | |
4755 | ||
4756 | INIT_LIST_HEAD(&fmsg->item_list); | |
4757 | ||
4758 | return fmsg; | |
4759 | } | |
4760 | ||
4761 | static void devlink_fmsg_free(struct devlink_fmsg *fmsg) | |
4762 | { | |
4763 | struct devlink_fmsg_item *item, *tmp; | |
4764 | ||
4765 | list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) { | |
4766 | list_del(&item->list); | |
4767 | kfree(item); | |
4768 | } | |
4769 | kfree(fmsg); | |
4770 | } | |
4771 | ||
4772 | static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg, | |
4773 | int attrtype) | |
4774 | { | |
4775 | struct devlink_fmsg_item *item; | |
4776 | ||
4777 | item = kzalloc(sizeof(*item), GFP_KERNEL); | |
4778 | if (!item) | |
4779 | return -ENOMEM; | |
4780 | ||
4781 | item->attrtype = attrtype; | |
4782 | list_add_tail(&item->list, &fmsg->item_list); | |
4783 | ||
4784 | return 0; | |
4785 | } | |
4786 | ||
4787 | int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg) | |
4788 | { | |
573ed90a AL |
4789 | if (fmsg->putting_binary) |
4790 | return -EINVAL; | |
4791 | ||
1db64e87 EBE |
4792 | return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START); |
4793 | } | |
4794 | EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start); | |
4795 | ||
4796 | static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg) | |
4797 | { | |
573ed90a AL |
4798 | if (fmsg->putting_binary) |
4799 | return -EINVAL; | |
4800 | ||
1db64e87 EBE |
4801 | return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END); |
4802 | } | |
4803 | ||
4804 | int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg) | |
4805 | { | |
573ed90a AL |
4806 | if (fmsg->putting_binary) |
4807 | return -EINVAL; | |
4808 | ||
1db64e87 EBE |
4809 | return devlink_fmsg_nest_end(fmsg); |
4810 | } | |
4811 | EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end); | |
4812 | ||
4813 | #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN) | |
4814 | ||
4815 | static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name) | |
4816 | { | |
4817 | struct devlink_fmsg_item *item; | |
4818 | ||
573ed90a AL |
4819 | if (fmsg->putting_binary) |
4820 | return -EINVAL; | |
4821 | ||
1db64e87 EBE |
4822 | if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE) |
4823 | return -EMSGSIZE; | |
4824 | ||
4825 | item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL); | |
4826 | if (!item) | |
4827 | return -ENOMEM; | |
4828 | ||
4829 | item->nla_type = NLA_NUL_STRING; | |
4830 | item->len = strlen(name) + 1; | |
4831 | item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME; | |
4832 | memcpy(&item->value, name, item->len); | |
4833 | list_add_tail(&item->list, &fmsg->item_list); | |
4834 | ||
4835 | return 0; | |
4836 | } | |
4837 | ||
4838 | int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name) | |
4839 | { | |
4840 | int err; | |
4841 | ||
573ed90a AL |
4842 | if (fmsg->putting_binary) |
4843 | return -EINVAL; | |
4844 | ||
1db64e87 EBE |
4845 | err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START); |
4846 | if (err) | |
4847 | return err; | |
4848 | ||
4849 | err = devlink_fmsg_put_name(fmsg, name); | |
4850 | if (err) | |
4851 | return err; | |
4852 | ||
4853 | return 0; | |
4854 | } | |
4855 | EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start); | |
4856 | ||
4857 | int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg) | |
4858 | { | |
573ed90a AL |
4859 | if (fmsg->putting_binary) |
4860 | return -EINVAL; | |
4861 | ||
1db64e87 EBE |
4862 | return devlink_fmsg_nest_end(fmsg); |
4863 | } | |
4864 | EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end); | |
4865 | ||
4866 | int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg, | |
4867 | const char *name) | |
4868 | { | |
4869 | int err; | |
4870 | ||
573ed90a AL |
4871 | if (fmsg->putting_binary) |
4872 | return -EINVAL; | |
4873 | ||
1db64e87 EBE |
4874 | err = devlink_fmsg_pair_nest_start(fmsg, name); |
4875 | if (err) | |
4876 | return err; | |
4877 | ||
4878 | err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START); | |
4879 | if (err) | |
4880 | return err; | |
4881 | ||
4882 | return 0; | |
4883 | } | |
4884 | EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start); | |
4885 | ||
4886 | int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg) | |
4887 | { | |
4888 | int err; | |
4889 | ||
573ed90a AL |
4890 | if (fmsg->putting_binary) |
4891 | return -EINVAL; | |
4892 | ||
1db64e87 EBE |
4893 | err = devlink_fmsg_nest_end(fmsg); |
4894 | if (err) | |
4895 | return err; | |
4896 | ||
4897 | err = devlink_fmsg_nest_end(fmsg); | |
4898 | if (err) | |
4899 | return err; | |
4900 | ||
4901 | return 0; | |
4902 | } | |
4903 | EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end); | |
4904 | ||
573ed90a AL |
4905 | int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg, |
4906 | const char *name) | |
4907 | { | |
4908 | int err; | |
4909 | ||
4910 | err = devlink_fmsg_arr_pair_nest_start(fmsg, name); | |
4911 | if (err) | |
4912 | return err; | |
4913 | ||
4914 | fmsg->putting_binary = true; | |
4915 | return err; | |
4916 | } | |
4917 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start); | |
4918 | ||
4919 | int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg) | |
4920 | { | |
4921 | if (!fmsg->putting_binary) | |
4922 | return -EINVAL; | |
4923 | ||
4924 | fmsg->putting_binary = false; | |
4925 | return devlink_fmsg_arr_pair_nest_end(fmsg); | |
4926 | } | |
4927 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end); | |
4928 | ||
1db64e87 EBE |
4929 | static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg, |
4930 | const void *value, u16 value_len, | |
4931 | u8 value_nla_type) | |
4932 | { | |
4933 | struct devlink_fmsg_item *item; | |
4934 | ||
4935 | if (value_len > DEVLINK_FMSG_MAX_SIZE) | |
4936 | return -EMSGSIZE; | |
4937 | ||
4938 | item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL); | |
4939 | if (!item) | |
4940 | return -ENOMEM; | |
4941 | ||
4942 | item->nla_type = value_nla_type; | |
4943 | item->len = value_len; | |
4944 | item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA; | |
4945 | memcpy(&item->value, value, item->len); | |
4946 | list_add_tail(&item->list, &fmsg->item_list); | |
4947 | ||
4948 | return 0; | |
4949 | } | |
4950 | ||
4951 | int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value) | |
4952 | { | |
573ed90a AL |
4953 | if (fmsg->putting_binary) |
4954 | return -EINVAL; | |
4955 | ||
1db64e87 EBE |
4956 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG); |
4957 | } | |
4958 | EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put); | |
4959 | ||
4960 | int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value) | |
4961 | { | |
573ed90a AL |
4962 | if (fmsg->putting_binary) |
4963 | return -EINVAL; | |
4964 | ||
1db64e87 EBE |
4965 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8); |
4966 | } | |
4967 | EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put); | |
4968 | ||
4969 | int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value) | |
4970 | { | |
573ed90a AL |
4971 | if (fmsg->putting_binary) |
4972 | return -EINVAL; | |
4973 | ||
1db64e87 EBE |
4974 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32); |
4975 | } | |
4976 | EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put); | |
4977 | ||
4978 | int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value) | |
4979 | { | |
573ed90a AL |
4980 | if (fmsg->putting_binary) |
4981 | return -EINVAL; | |
4982 | ||
1db64e87 EBE |
4983 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64); |
4984 | } | |
4985 | EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put); | |
4986 | ||
4987 | int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value) | |
4988 | { | |
573ed90a AL |
4989 | if (fmsg->putting_binary) |
4990 | return -EINVAL; | |
4991 | ||
1db64e87 EBE |
4992 | return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1, |
4993 | NLA_NUL_STRING); | |
4994 | } | |
4995 | EXPORT_SYMBOL_GPL(devlink_fmsg_string_put); | |
4996 | ||
573ed90a AL |
4997 | int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value, |
4998 | u16 value_len) | |
1db64e87 | 4999 | { |
573ed90a AL |
5000 | if (!fmsg->putting_binary) |
5001 | return -EINVAL; | |
5002 | ||
1db64e87 EBE |
5003 | return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY); |
5004 | } | |
573ed90a | 5005 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put); |
1db64e87 EBE |
5006 | |
5007 | int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5008 | bool value) | |
5009 | { | |
5010 | int err; | |
5011 | ||
5012 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5013 | if (err) | |
5014 | return err; | |
5015 | ||
5016 | err = devlink_fmsg_bool_put(fmsg, value); | |
5017 | if (err) | |
5018 | return err; | |
5019 | ||
5020 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5021 | if (err) | |
5022 | return err; | |
5023 | ||
5024 | return 0; | |
5025 | } | |
5026 | EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put); | |
5027 | ||
5028 | int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5029 | u8 value) | |
5030 | { | |
5031 | int err; | |
5032 | ||
5033 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5034 | if (err) | |
5035 | return err; | |
5036 | ||
5037 | err = devlink_fmsg_u8_put(fmsg, value); | |
5038 | if (err) | |
5039 | return err; | |
5040 | ||
5041 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5042 | if (err) | |
5043 | return err; | |
5044 | ||
5045 | return 0; | |
5046 | } | |
5047 | EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put); | |
5048 | ||
5049 | int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5050 | u32 value) | |
5051 | { | |
5052 | int err; | |
5053 | ||
5054 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5055 | if (err) | |
5056 | return err; | |
5057 | ||
5058 | err = devlink_fmsg_u32_put(fmsg, value); | |
5059 | if (err) | |
5060 | return err; | |
5061 | ||
5062 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5063 | if (err) | |
5064 | return err; | |
5065 | ||
5066 | return 0; | |
5067 | } | |
5068 | EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put); | |
5069 | ||
5070 | int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5071 | u64 value) | |
5072 | { | |
5073 | int err; | |
5074 | ||
5075 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5076 | if (err) | |
5077 | return err; | |
5078 | ||
5079 | err = devlink_fmsg_u64_put(fmsg, value); | |
5080 | if (err) | |
5081 | return err; | |
5082 | ||
5083 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5084 | if (err) | |
5085 | return err; | |
5086 | ||
5087 | return 0; | |
5088 | } | |
5089 | EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put); | |
5090 | ||
5091 | int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5092 | const char *value) | |
5093 | { | |
5094 | int err; | |
5095 | ||
5096 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5097 | if (err) | |
5098 | return err; | |
5099 | ||
5100 | err = devlink_fmsg_string_put(fmsg, value); | |
5101 | if (err) | |
5102 | return err; | |
5103 | ||
5104 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5105 | if (err) | |
5106 | return err; | |
5107 | ||
5108 | return 0; | |
5109 | } | |
5110 | EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put); | |
5111 | ||
5112 | int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
e2cde864 | 5113 | const void *value, u32 value_len) |
1db64e87 | 5114 | { |
e2cde864 | 5115 | u32 data_size; |
573ed90a | 5116 | int end_err; |
e2cde864 | 5117 | u32 offset; |
1db64e87 EBE |
5118 | int err; |
5119 | ||
573ed90a | 5120 | err = devlink_fmsg_binary_pair_nest_start(fmsg, name); |
1db64e87 EBE |
5121 | if (err) |
5122 | return err; | |
5123 | ||
e2cde864 AL |
5124 | for (offset = 0; offset < value_len; offset += data_size) { |
5125 | data_size = value_len - offset; | |
5126 | if (data_size > DEVLINK_FMSG_MAX_SIZE) | |
5127 | data_size = DEVLINK_FMSG_MAX_SIZE; | |
5128 | err = devlink_fmsg_binary_put(fmsg, value + offset, data_size); | |
5129 | if (err) | |
573ed90a AL |
5130 | break; |
5131 | /* Exit from loop with a break (instead of | |
5132 | * return) to make sure putting_binary is turned off in | |
5133 | * devlink_fmsg_binary_pair_nest_end | |
5134 | */ | |
e2cde864 | 5135 | } |
1db64e87 | 5136 | |
573ed90a AL |
5137 | end_err = devlink_fmsg_binary_pair_nest_end(fmsg); |
5138 | if (end_err) | |
5139 | err = end_err; | |
1db64e87 | 5140 | |
573ed90a | 5141 | return err; |
1db64e87 EBE |
5142 | } |
5143 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put); | |
5144 | ||
5145 | static int | |
5146 | devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb) | |
5147 | { | |
5148 | switch (msg->nla_type) { | |
5149 | case NLA_FLAG: | |
5150 | case NLA_U8: | |
5151 | case NLA_U32: | |
5152 | case NLA_U64: | |
5153 | case NLA_NUL_STRING: | |
5154 | case NLA_BINARY: | |
5155 | return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE, | |
5156 | msg->nla_type); | |
5157 | default: | |
5158 | return -EINVAL; | |
5159 | } | |
5160 | } | |
5161 | ||
5162 | static int | |
5163 | devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb) | |
5164 | { | |
5165 | int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA; | |
5166 | u8 tmp; | |
5167 | ||
5168 | switch (msg->nla_type) { | |
5169 | case NLA_FLAG: | |
5170 | /* Always provide flag data, regardless of its value */ | |
5171 | tmp = *(bool *) msg->value; | |
5172 | ||
5173 | return nla_put_u8(skb, attrtype, tmp); | |
5174 | case NLA_U8: | |
5175 | return nla_put_u8(skb, attrtype, *(u8 *) msg->value); | |
5176 | case NLA_U32: | |
5177 | return nla_put_u32(skb, attrtype, *(u32 *) msg->value); | |
5178 | case NLA_U64: | |
5179 | return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value, | |
5180 | DEVLINK_ATTR_PAD); | |
5181 | case NLA_NUL_STRING: | |
5182 | return nla_put_string(skb, attrtype, (char *) &msg->value); | |
5183 | case NLA_BINARY: | |
5184 | return nla_put(skb, attrtype, msg->len, (void *) &msg->value); | |
5185 | default: | |
5186 | return -EINVAL; | |
5187 | } | |
5188 | } | |
5189 | ||
5190 | static int | |
5191 | devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb, | |
5192 | int *start) | |
5193 | { | |
5194 | struct devlink_fmsg_item *item; | |
5195 | struct nlattr *fmsg_nlattr; | |
5196 | int i = 0; | |
5197 | int err; | |
5198 | ||
ae0be8de | 5199 | fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG); |
1db64e87 EBE |
5200 | if (!fmsg_nlattr) |
5201 | return -EMSGSIZE; | |
5202 | ||
5203 | list_for_each_entry(item, &fmsg->item_list, list) { | |
5204 | if (i < *start) { | |
5205 | i++; | |
5206 | continue; | |
5207 | } | |
5208 | ||
5209 | switch (item->attrtype) { | |
5210 | case DEVLINK_ATTR_FMSG_OBJ_NEST_START: | |
5211 | case DEVLINK_ATTR_FMSG_PAIR_NEST_START: | |
5212 | case DEVLINK_ATTR_FMSG_ARR_NEST_START: | |
5213 | case DEVLINK_ATTR_FMSG_NEST_END: | |
5214 | err = nla_put_flag(skb, item->attrtype); | |
5215 | break; | |
5216 | case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA: | |
5217 | err = devlink_fmsg_item_fill_type(item, skb); | |
5218 | if (err) | |
5219 | break; | |
5220 | err = devlink_fmsg_item_fill_data(item, skb); | |
5221 | break; | |
5222 | case DEVLINK_ATTR_FMSG_OBJ_NAME: | |
5223 | err = nla_put_string(skb, item->attrtype, | |
5224 | (char *) &item->value); | |
5225 | break; | |
5226 | default: | |
5227 | err = -EINVAL; | |
5228 | break; | |
5229 | } | |
5230 | if (!err) | |
5231 | *start = ++i; | |
5232 | else | |
5233 | break; | |
5234 | } | |
5235 | ||
5236 | nla_nest_end(skb, fmsg_nlattr); | |
5237 | return err; | |
5238 | } | |
5239 | ||
5240 | static int devlink_fmsg_snd(struct devlink_fmsg *fmsg, | |
5241 | struct genl_info *info, | |
5242 | enum devlink_command cmd, int flags) | |
5243 | { | |
5244 | struct nlmsghdr *nlh; | |
5245 | struct sk_buff *skb; | |
5246 | bool last = false; | |
5247 | int index = 0; | |
5248 | void *hdr; | |
5249 | int err; | |
5250 | ||
5251 | while (!last) { | |
5252 | int tmp_index = index; | |
5253 | ||
5254 | skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5255 | if (!skb) | |
5256 | return -ENOMEM; | |
5257 | ||
5258 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
5259 | &devlink_nl_family, flags | NLM_F_MULTI, cmd); | |
5260 | if (!hdr) { | |
5261 | err = -EMSGSIZE; | |
5262 | goto nla_put_failure; | |
5263 | } | |
5264 | ||
5265 | err = devlink_fmsg_prepare_skb(fmsg, skb, &index); | |
5266 | if (!err) | |
5267 | last = true; | |
5268 | else if (err != -EMSGSIZE || tmp_index == index) | |
5269 | goto nla_put_failure; | |
5270 | ||
5271 | genlmsg_end(skb, hdr); | |
5272 | err = genlmsg_reply(skb, info); | |
5273 | if (err) | |
5274 | return err; | |
5275 | } | |
5276 | ||
5277 | skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5278 | if (!skb) | |
5279 | return -ENOMEM; | |
5280 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
5281 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
5282 | if (!nlh) { | |
5283 | err = -EMSGSIZE; | |
5284 | goto nla_put_failure; | |
5285 | } | |
1db64e87 | 5286 | |
fde55ea7 | 5287 | return genlmsg_reply(skb, info); |
1db64e87 EBE |
5288 | |
5289 | nla_put_failure: | |
5290 | nlmsg_free(skb); | |
5291 | return err; | |
5292 | } | |
5293 | ||
e44ef4e4 AL |
5294 | static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb, |
5295 | struct netlink_callback *cb, | |
5296 | enum devlink_command cmd) | |
5297 | { | |
5298 | int index = cb->args[0]; | |
5299 | int tmp_index = index; | |
5300 | void *hdr; | |
5301 | int err; | |
5302 | ||
5303 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, | |
5304 | &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd); | |
5305 | if (!hdr) { | |
5306 | err = -EMSGSIZE; | |
5307 | goto nla_put_failure; | |
5308 | } | |
5309 | ||
5310 | err = devlink_fmsg_prepare_skb(fmsg, skb, &index); | |
5311 | if ((err && err != -EMSGSIZE) || tmp_index == index) | |
5312 | goto nla_put_failure; | |
5313 | ||
5314 | cb->args[0] = index; | |
5315 | genlmsg_end(skb, hdr); | |
5316 | return skb->len; | |
5317 | ||
5318 | nla_put_failure: | |
5319 | genlmsg_cancel(skb, hdr); | |
5320 | return err; | |
5321 | } | |
5322 | ||
a0bdcc59 EBE |
5323 | struct devlink_health_reporter { |
5324 | struct list_head list; | |
5325 | void *priv; | |
5326 | const struct devlink_health_reporter_ops *ops; | |
5327 | struct devlink *devlink; | |
f4f54166 | 5328 | struct devlink_port *devlink_port; |
c8e1da0b EBE |
5329 | struct devlink_fmsg *dump_fmsg; |
5330 | struct mutex dump_lock; /* lock parallel read/write from dump buffers */ | |
a0bdcc59 EBE |
5331 | u64 graceful_period; |
5332 | bool auto_recover; | |
48bb52c8 | 5333 | bool auto_dump; |
a0bdcc59 | 5334 | u8 health_state; |
c8e1da0b | 5335 | u64 dump_ts; |
d279505b | 5336 | u64 dump_real_ts; |
c8e1da0b EBE |
5337 | u64 error_count; |
5338 | u64 recovery_count; | |
5339 | u64 last_recovery_ts; | |
b587bdaf | 5340 | refcount_t refcount; |
c8e1da0b EBE |
5341 | }; |
5342 | ||
a0bdcc59 EBE |
5343 | void * |
5344 | devlink_health_reporter_priv(struct devlink_health_reporter *reporter) | |
5345 | { | |
5346 | return reporter->priv; | |
5347 | } | |
5348 | EXPORT_SYMBOL_GPL(devlink_health_reporter_priv); | |
5349 | ||
5350 | static struct devlink_health_reporter * | |
bd821005 VT |
5351 | __devlink_health_reporter_find_by_name(struct list_head *reporter_list, |
5352 | struct mutex *list_lock, | |
5353 | const char *reporter_name) | |
a0bdcc59 EBE |
5354 | { |
5355 | struct devlink_health_reporter *reporter; | |
5356 | ||
bd821005 VT |
5357 | lockdep_assert_held(list_lock); |
5358 | list_for_each_entry(reporter, reporter_list, list) | |
a0bdcc59 EBE |
5359 | if (!strcmp(reporter->ops->name, reporter_name)) |
5360 | return reporter; | |
5361 | return NULL; | |
5362 | } | |
5363 | ||
bd821005 VT |
5364 | static struct devlink_health_reporter * |
5365 | devlink_health_reporter_find_by_name(struct devlink *devlink, | |
5366 | const char *reporter_name) | |
5367 | { | |
5368 | return __devlink_health_reporter_find_by_name(&devlink->reporter_list, | |
5369 | &devlink->reporters_lock, | |
5370 | reporter_name); | |
5371 | } | |
5372 | ||
f4f54166 VT |
5373 | static struct devlink_health_reporter * |
5374 | devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port, | |
5375 | const char *reporter_name) | |
5376 | { | |
5377 | return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list, | |
5378 | &devlink_port->reporters_lock, | |
5379 | reporter_name); | |
5380 | } | |
5381 | ||
c57544b3 VT |
5382 | static struct devlink_health_reporter * |
5383 | __devlink_health_reporter_create(struct devlink *devlink, | |
5384 | const struct devlink_health_reporter_ops *ops, | |
5385 | u64 graceful_period, void *priv) | |
5386 | { | |
5387 | struct devlink_health_reporter *reporter; | |
5388 | ||
5389 | if (WARN_ON(graceful_period && !ops->recover)) | |
5390 | return ERR_PTR(-EINVAL); | |
5391 | ||
5392 | reporter = kzalloc(sizeof(*reporter), GFP_KERNEL); | |
5393 | if (!reporter) | |
5394 | return ERR_PTR(-ENOMEM); | |
5395 | ||
5396 | reporter->priv = priv; | |
5397 | reporter->ops = ops; | |
5398 | reporter->devlink = devlink; | |
5399 | reporter->graceful_period = graceful_period; | |
5400 | reporter->auto_recover = !!ops->recover; | |
5401 | reporter->auto_dump = !!ops->dump; | |
5402 | mutex_init(&reporter->dump_lock); | |
5403 | refcount_set(&reporter->refcount, 1); | |
5404 | return reporter; | |
5405 | } | |
5406 | ||
15c724b9 VT |
5407 | /** |
5408 | * devlink_port_health_reporter_create - create devlink health reporter for | |
5409 | * specified port instance | |
5410 | * | |
5411 | * @port: devlink_port which should contain the new reporter | |
5412 | * @ops: ops | |
5413 | * @graceful_period: to avoid recovery loops, in msecs | |
5414 | * @priv: priv | |
5415 | */ | |
5416 | struct devlink_health_reporter * | |
5417 | devlink_port_health_reporter_create(struct devlink_port *port, | |
5418 | const struct devlink_health_reporter_ops *ops, | |
5419 | u64 graceful_period, void *priv) | |
5420 | { | |
5421 | struct devlink_health_reporter *reporter; | |
5422 | ||
5423 | mutex_lock(&port->reporters_lock); | |
5424 | if (__devlink_health_reporter_find_by_name(&port->reporter_list, | |
5425 | &port->reporters_lock, ops->name)) { | |
5426 | reporter = ERR_PTR(-EEXIST); | |
5427 | goto unlock; | |
5428 | } | |
5429 | ||
5430 | reporter = __devlink_health_reporter_create(port->devlink, ops, | |
5431 | graceful_period, priv); | |
5432 | if (IS_ERR(reporter)) | |
5433 | goto unlock; | |
5434 | ||
5435 | reporter->devlink_port = port; | |
5436 | list_add_tail(&reporter->list, &port->reporter_list); | |
5437 | unlock: | |
5438 | mutex_unlock(&port->reporters_lock); | |
5439 | return reporter; | |
5440 | } | |
5441 | EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create); | |
5442 | ||
a0bdcc59 EBE |
5443 | /** |
5444 | * devlink_health_reporter_create - create devlink health reporter | |
5445 | * | |
5446 | * @devlink: devlink | |
5447 | * @ops: ops | |
5448 | * @graceful_period: to avoid recovery loops, in msecs | |
a0bdcc59 EBE |
5449 | * @priv: priv |
5450 | */ | |
5451 | struct devlink_health_reporter * | |
5452 | devlink_health_reporter_create(struct devlink *devlink, | |
5453 | const struct devlink_health_reporter_ops *ops, | |
ba7d16c7 | 5454 | u64 graceful_period, void *priv) |
a0bdcc59 EBE |
5455 | { |
5456 | struct devlink_health_reporter *reporter; | |
5457 | ||
b587bdaf | 5458 | mutex_lock(&devlink->reporters_lock); |
a0bdcc59 EBE |
5459 | if (devlink_health_reporter_find_by_name(devlink, ops->name)) { |
5460 | reporter = ERR_PTR(-EEXIST); | |
5461 | goto unlock; | |
5462 | } | |
5463 | ||
c57544b3 VT |
5464 | reporter = __devlink_health_reporter_create(devlink, ops, |
5465 | graceful_period, priv); | |
5466 | if (IS_ERR(reporter)) | |
a0bdcc59 | 5467 | goto unlock; |
a0bdcc59 | 5468 | |
a0bdcc59 EBE |
5469 | list_add_tail(&reporter->list, &devlink->reporter_list); |
5470 | unlock: | |
b587bdaf | 5471 | mutex_unlock(&devlink->reporters_lock); |
a0bdcc59 EBE |
5472 | return reporter; |
5473 | } | |
5474 | EXPORT_SYMBOL_GPL(devlink_health_reporter_create); | |
5475 | ||
3c5584bf VT |
5476 | static void |
5477 | devlink_health_reporter_free(struct devlink_health_reporter *reporter) | |
5478 | { | |
5479 | mutex_destroy(&reporter->dump_lock); | |
5480 | if (reporter->dump_fmsg) | |
5481 | devlink_fmsg_free(reporter->dump_fmsg); | |
5482 | kfree(reporter); | |
5483 | } | |
5484 | ||
5485 | static void | |
5486 | devlink_health_reporter_put(struct devlink_health_reporter *reporter) | |
5487 | { | |
5488 | if (refcount_dec_and_test(&reporter->refcount)) | |
5489 | devlink_health_reporter_free(reporter); | |
5490 | } | |
5491 | ||
5492 | static void | |
5493 | __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
5494 | { | |
5495 | list_del(&reporter->list); | |
5496 | devlink_health_reporter_put(reporter); | |
5497 | } | |
5498 | ||
a0bdcc59 EBE |
5499 | /** |
5500 | * devlink_health_reporter_destroy - destroy devlink health reporter | |
5501 | * | |
5502 | * @reporter: devlink health reporter to destroy | |
5503 | */ | |
5504 | void | |
5505 | devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
5506 | { | |
5d037b4d IS |
5507 | struct mutex *lock = &reporter->devlink->reporters_lock; |
5508 | ||
5509 | mutex_lock(lock); | |
3c5584bf | 5510 | __devlink_health_reporter_destroy(reporter); |
5d037b4d | 5511 | mutex_unlock(lock); |
a0bdcc59 EBE |
5512 | } |
5513 | EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy); | |
5514 | ||
15c724b9 VT |
5515 | /** |
5516 | * devlink_port_health_reporter_destroy - destroy devlink port health reporter | |
5517 | * | |
5518 | * @reporter: devlink health reporter to destroy | |
5519 | */ | |
5520 | void | |
5521 | devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
5522 | { | |
5d037b4d IS |
5523 | struct mutex *lock = &reporter->devlink_port->reporters_lock; |
5524 | ||
5525 | mutex_lock(lock); | |
15c724b9 | 5526 | __devlink_health_reporter_destroy(reporter); |
5d037b4d | 5527 | mutex_unlock(lock); |
15c724b9 VT |
5528 | } |
5529 | EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy); | |
5530 | ||
6ec8b6cd MS |
5531 | static int |
5532 | devlink_nl_health_reporter_fill(struct sk_buff *msg, | |
5533 | struct devlink *devlink, | |
5534 | struct devlink_health_reporter *reporter, | |
5535 | enum devlink_command cmd, u32 portid, | |
5536 | u32 seq, int flags) | |
5537 | { | |
5538 | struct nlattr *reporter_attr; | |
5539 | void *hdr; | |
5540 | ||
5541 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
5542 | if (!hdr) | |
5543 | return -EMSGSIZE; | |
5544 | ||
5545 | if (devlink_nl_put_handle(msg, devlink)) | |
5546 | goto genlmsg_cancel; | |
5547 | ||
f4f54166 VT |
5548 | if (reporter->devlink_port) { |
5549 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index)) | |
5550 | goto genlmsg_cancel; | |
5551 | } | |
6ec8b6cd MS |
5552 | reporter_attr = nla_nest_start_noflag(msg, |
5553 | DEVLINK_ATTR_HEALTH_REPORTER); | |
5554 | if (!reporter_attr) | |
5555 | goto genlmsg_cancel; | |
5556 | if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME, | |
5557 | reporter->ops->name)) | |
5558 | goto reporter_nest_cancel; | |
5559 | if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE, | |
5560 | reporter->health_state)) | |
5561 | goto reporter_nest_cancel; | |
5562 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT, | |
5563 | reporter->error_count, DEVLINK_ATTR_PAD)) | |
5564 | goto reporter_nest_cancel; | |
5565 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT, | |
5566 | reporter->recovery_count, DEVLINK_ATTR_PAD)) | |
5567 | goto reporter_nest_cancel; | |
5568 | if (reporter->ops->recover && | |
5569 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD, | |
5570 | reporter->graceful_period, | |
5571 | DEVLINK_ATTR_PAD)) | |
5572 | goto reporter_nest_cancel; | |
5573 | if (reporter->ops->recover && | |
5574 | nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER, | |
5575 | reporter->auto_recover)) | |
5576 | goto reporter_nest_cancel; | |
5577 | if (reporter->dump_fmsg && | |
5578 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS, | |
5579 | jiffies_to_msecs(reporter->dump_ts), | |
5580 | DEVLINK_ATTR_PAD)) | |
5581 | goto reporter_nest_cancel; | |
5582 | if (reporter->dump_fmsg && | |
5583 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS, | |
5584 | reporter->dump_real_ts, DEVLINK_ATTR_PAD)) | |
5585 | goto reporter_nest_cancel; | |
48bb52c8 EBE |
5586 | if (reporter->ops->dump && |
5587 | nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP, | |
5588 | reporter->auto_dump)) | |
5589 | goto reporter_nest_cancel; | |
6ec8b6cd MS |
5590 | |
5591 | nla_nest_end(msg, reporter_attr); | |
5592 | genlmsg_end(msg, hdr); | |
5593 | return 0; | |
5594 | ||
5595 | reporter_nest_cancel: | |
5596 | nla_nest_end(msg, reporter_attr); | |
5597 | genlmsg_cancel: | |
5598 | genlmsg_cancel(msg, hdr); | |
5599 | return -EMSGSIZE; | |
5600 | } | |
5601 | ||
5602 | static void devlink_recover_notify(struct devlink_health_reporter *reporter, | |
5603 | enum devlink_command cmd) | |
5604 | { | |
5605 | struct sk_buff *msg; | |
5606 | int err; | |
5607 | ||
5608 | WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER); | |
5609 | ||
5610 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5611 | if (!msg) | |
5612 | return; | |
5613 | ||
5614 | err = devlink_nl_health_reporter_fill(msg, reporter->devlink, | |
5615 | reporter, cmd, 0, 0, 0); | |
5616 | if (err) { | |
5617 | nlmsg_free(msg); | |
5618 | return; | |
5619 | } | |
5620 | ||
5621 | genlmsg_multicast_netns(&devlink_nl_family, | |
5622 | devlink_net(reporter->devlink), | |
5623 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
5624 | } | |
5625 | ||
6181e5cb VG |
5626 | void |
5627 | devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter) | |
5628 | { | |
5629 | reporter->recovery_count++; | |
5630 | reporter->last_recovery_ts = jiffies; | |
5631 | } | |
5632 | EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done); | |
5633 | ||
c8e1da0b EBE |
5634 | static int |
5635 | devlink_health_reporter_recover(struct devlink_health_reporter *reporter, | |
e7a98105 | 5636 | void *priv_ctx, struct netlink_ext_ack *extack) |
c8e1da0b EBE |
5637 | { |
5638 | int err; | |
5639 | ||
40281820 JP |
5640 | if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY) |
5641 | return 0; | |
5642 | ||
c8e1da0b EBE |
5643 | if (!reporter->ops->recover) |
5644 | return -EOPNOTSUPP; | |
5645 | ||
e7a98105 | 5646 | err = reporter->ops->recover(reporter, priv_ctx, extack); |
c8e1da0b EBE |
5647 | if (err) |
5648 | return err; | |
5649 | ||
6181e5cb | 5650 | devlink_health_reporter_recovery_done(reporter); |
c8e1da0b | 5651 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY; |
6ec8b6cd | 5652 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); |
c8e1da0b EBE |
5653 | |
5654 | return 0; | |
5655 | } | |
5656 | ||
5657 | static void | |
5658 | devlink_health_dump_clear(struct devlink_health_reporter *reporter) | |
5659 | { | |
5660 | if (!reporter->dump_fmsg) | |
5661 | return; | |
5662 | devlink_fmsg_free(reporter->dump_fmsg); | |
5663 | reporter->dump_fmsg = NULL; | |
5664 | } | |
5665 | ||
5666 | static int devlink_health_do_dump(struct devlink_health_reporter *reporter, | |
e7a98105 JP |
5667 | void *priv_ctx, |
5668 | struct netlink_ext_ack *extack) | |
c8e1da0b EBE |
5669 | { |
5670 | int err; | |
5671 | ||
5672 | if (!reporter->ops->dump) | |
5673 | return 0; | |
5674 | ||
5675 | if (reporter->dump_fmsg) | |
5676 | return 0; | |
5677 | ||
5678 | reporter->dump_fmsg = devlink_fmsg_alloc(); | |
5679 | if (!reporter->dump_fmsg) { | |
5680 | err = -ENOMEM; | |
5681 | return err; | |
5682 | } | |
5683 | ||
5684 | err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg); | |
5685 | if (err) | |
5686 | goto dump_err; | |
5687 | ||
5688 | err = reporter->ops->dump(reporter, reporter->dump_fmsg, | |
e7a98105 | 5689 | priv_ctx, extack); |
c8e1da0b EBE |
5690 | if (err) |
5691 | goto dump_err; | |
5692 | ||
5693 | err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg); | |
5694 | if (err) | |
5695 | goto dump_err; | |
5696 | ||
5697 | reporter->dump_ts = jiffies; | |
d279505b | 5698 | reporter->dump_real_ts = ktime_get_real_ns(); |
c8e1da0b EBE |
5699 | |
5700 | return 0; | |
5701 | ||
5702 | dump_err: | |
5703 | devlink_health_dump_clear(reporter); | |
5704 | return err; | |
5705 | } | |
5706 | ||
5707 | int devlink_health_report(struct devlink_health_reporter *reporter, | |
5708 | const char *msg, void *priv_ctx) | |
5709 | { | |
a0a21adb | 5710 | enum devlink_health_reporter_state prev_health_state; |
c8e1da0b | 5711 | struct devlink *devlink = reporter->devlink; |
bea0c5c9 | 5712 | unsigned long recover_ts_threshold; |
c8e1da0b EBE |
5713 | |
5714 | /* write a log message of the current error */ | |
5715 | WARN_ON(!msg); | |
5716 | trace_devlink_health_report(devlink, reporter->ops->name, msg); | |
5717 | reporter->error_count++; | |
a0a21adb EBE |
5718 | prev_health_state = reporter->health_state; |
5719 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR; | |
6ec8b6cd | 5720 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); |
c8e1da0b EBE |
5721 | |
5722 | /* abort if the previous error wasn't recovered */ | |
bea0c5c9 AL |
5723 | recover_ts_threshold = reporter->last_recovery_ts + |
5724 | msecs_to_jiffies(reporter->graceful_period); | |
c8e1da0b | 5725 | if (reporter->auto_recover && |
a0a21adb | 5726 | (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY || |
bea0c5c9 AL |
5727 | (reporter->last_recovery_ts && reporter->recovery_count && |
5728 | time_is_after_jiffies(recover_ts_threshold)))) { | |
c8e1da0b EBE |
5729 | trace_devlink_health_recover_aborted(devlink, |
5730 | reporter->ops->name, | |
5731 | reporter->health_state, | |
5732 | jiffies - | |
5733 | reporter->last_recovery_ts); | |
5734 | return -ECANCELED; | |
5735 | } | |
5736 | ||
5737 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR; | |
5738 | ||
48bb52c8 EBE |
5739 | if (reporter->auto_dump) { |
5740 | mutex_lock(&reporter->dump_lock); | |
5741 | /* store current dump of current error, for later analysis */ | |
5742 | devlink_health_do_dump(reporter, priv_ctx, NULL); | |
5743 | mutex_unlock(&reporter->dump_lock); | |
5744 | } | |
c8e1da0b EBE |
5745 | |
5746 | if (reporter->auto_recover) | |
e7a98105 JP |
5747 | return devlink_health_reporter_recover(reporter, |
5748 | priv_ctx, NULL); | |
c8e1da0b EBE |
5749 | |
5750 | return 0; | |
5751 | } | |
5752 | EXPORT_SYMBOL_GPL(devlink_health_report); | |
5753 | ||
7afe335a | 5754 | static struct devlink_health_reporter * |
e44ef4e4 AL |
5755 | devlink_health_reporter_get_from_attrs(struct devlink *devlink, |
5756 | struct nlattr **attrs) | |
7afe335a | 5757 | { |
b587bdaf | 5758 | struct devlink_health_reporter *reporter; |
f4f54166 | 5759 | struct devlink_port *devlink_port; |
7afe335a EBE |
5760 | char *reporter_name; |
5761 | ||
e44ef4e4 | 5762 | if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]) |
7afe335a EBE |
5763 | return NULL; |
5764 | ||
e44ef4e4 | 5765 | reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]); |
f4f54166 VT |
5766 | devlink_port = devlink_port_get_from_attrs(devlink, attrs); |
5767 | if (IS_ERR(devlink_port)) { | |
5768 | mutex_lock(&devlink->reporters_lock); | |
5769 | reporter = devlink_health_reporter_find_by_name(devlink, reporter_name); | |
5770 | if (reporter) | |
5771 | refcount_inc(&reporter->refcount); | |
5772 | mutex_unlock(&devlink->reporters_lock); | |
5773 | } else { | |
5774 | mutex_lock(&devlink_port->reporters_lock); | |
5775 | reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name); | |
5776 | if (reporter) | |
5777 | refcount_inc(&reporter->refcount); | |
5778 | mutex_unlock(&devlink_port->reporters_lock); | |
5779 | } | |
5780 | ||
b587bdaf MS |
5781 | return reporter; |
5782 | } | |
5783 | ||
e44ef4e4 AL |
5784 | static struct devlink_health_reporter * |
5785 | devlink_health_reporter_get_from_info(struct devlink *devlink, | |
5786 | struct genl_info *info) | |
5787 | { | |
5788 | return devlink_health_reporter_get_from_attrs(devlink, info->attrs); | |
5789 | } | |
5790 | ||
5791 | static struct devlink_health_reporter * | |
5792 | devlink_health_reporter_get_from_cb(struct netlink_callback *cb) | |
5793 | { | |
ee85da53 | 5794 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
e44ef4e4 | 5795 | struct devlink_health_reporter *reporter; |
ee85da53 | 5796 | struct nlattr **attrs = info->attrs; |
e44ef4e4 | 5797 | struct devlink *devlink; |
e44ef4e4 AL |
5798 | |
5799 | mutex_lock(&devlink_mutex); | |
5800 | devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); | |
5801 | if (IS_ERR(devlink)) | |
5802 | goto unlock; | |
5803 | ||
5804 | reporter = devlink_health_reporter_get_from_attrs(devlink, attrs); | |
5805 | mutex_unlock(&devlink_mutex); | |
e44ef4e4 AL |
5806 | return reporter; |
5807 | unlock: | |
5808 | mutex_unlock(&devlink_mutex); | |
e44ef4e4 AL |
5809 | return NULL; |
5810 | } | |
5811 | ||
97ff3bd3 VG |
5812 | void |
5813 | devlink_health_reporter_state_update(struct devlink_health_reporter *reporter, | |
5814 | enum devlink_health_reporter_state state) | |
5815 | { | |
5816 | if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY && | |
5817 | state != DEVLINK_HEALTH_REPORTER_STATE_ERROR)) | |
5818 | return; | |
5819 | ||
5820 | if (reporter->health_state == state) | |
5821 | return; | |
5822 | ||
5823 | reporter->health_state = state; | |
5824 | trace_devlink_health_reporter_state_update(reporter->devlink, | |
5825 | reporter->ops->name, state); | |
5826 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); | |
5827 | } | |
5828 | EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update); | |
5829 | ||
7afe335a EBE |
5830 | static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb, |
5831 | struct genl_info *info) | |
5832 | { | |
5833 | struct devlink *devlink = info->user_ptr[0]; | |
5834 | struct devlink_health_reporter *reporter; | |
5835 | struct sk_buff *msg; | |
5836 | int err; | |
5837 | ||
5838 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5839 | if (!reporter) | |
5840 | return -EINVAL; | |
5841 | ||
5842 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
b587bdaf MS |
5843 | if (!msg) { |
5844 | err = -ENOMEM; | |
5845 | goto out; | |
5846 | } | |
7afe335a EBE |
5847 | |
5848 | err = devlink_nl_health_reporter_fill(msg, devlink, reporter, | |
5849 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
5850 | info->snd_portid, info->snd_seq, | |
5851 | 0); | |
5852 | if (err) { | |
5853 | nlmsg_free(msg); | |
b587bdaf | 5854 | goto out; |
7afe335a EBE |
5855 | } |
5856 | ||
b587bdaf MS |
5857 | err = genlmsg_reply(msg, info); |
5858 | out: | |
5859 | devlink_health_reporter_put(reporter); | |
5860 | return err; | |
7afe335a EBE |
5861 | } |
5862 | ||
5863 | static int | |
5864 | devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg, | |
5865 | struct netlink_callback *cb) | |
5866 | { | |
5867 | struct devlink_health_reporter *reporter; | |
f4f54166 | 5868 | struct devlink_port *port; |
7afe335a EBE |
5869 | struct devlink *devlink; |
5870 | int start = cb->args[0]; | |
5871 | int idx = 0; | |
5872 | int err; | |
5873 | ||
5874 | mutex_lock(&devlink_mutex); | |
5875 | list_for_each_entry(devlink, &devlink_list, list) { | |
5876 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
5877 | continue; | |
b587bdaf | 5878 | mutex_lock(&devlink->reporters_lock); |
7afe335a EBE |
5879 | list_for_each_entry(reporter, &devlink->reporter_list, |
5880 | list) { | |
5881 | if (idx < start) { | |
5882 | idx++; | |
5883 | continue; | |
5884 | } | |
5885 | err = devlink_nl_health_reporter_fill(msg, devlink, | |
5886 | reporter, | |
5887 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
5888 | NETLINK_CB(cb->skb).portid, | |
5889 | cb->nlh->nlmsg_seq, | |
5890 | NLM_F_MULTI); | |
5891 | if (err) { | |
b587bdaf | 5892 | mutex_unlock(&devlink->reporters_lock); |
7afe335a EBE |
5893 | goto out; |
5894 | } | |
5895 | idx++; | |
5896 | } | |
b587bdaf | 5897 | mutex_unlock(&devlink->reporters_lock); |
7afe335a | 5898 | } |
f4f54166 VT |
5899 | |
5900 | list_for_each_entry(devlink, &devlink_list, list) { | |
5901 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
5902 | continue; | |
5d080b50 | 5903 | mutex_lock(&devlink->lock); |
f4f54166 VT |
5904 | list_for_each_entry(port, &devlink->port_list, list) { |
5905 | mutex_lock(&port->reporters_lock); | |
5906 | list_for_each_entry(reporter, &port->reporter_list, list) { | |
5907 | if (idx < start) { | |
5908 | idx++; | |
5909 | continue; | |
5910 | } | |
5911 | err = devlink_nl_health_reporter_fill(msg, devlink, reporter, | |
5912 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
5913 | NETLINK_CB(cb->skb).portid, | |
5914 | cb->nlh->nlmsg_seq, | |
5915 | NLM_F_MULTI); | |
5916 | if (err) { | |
5917 | mutex_unlock(&port->reporters_lock); | |
5d080b50 | 5918 | mutex_unlock(&devlink->lock); |
f4f54166 VT |
5919 | goto out; |
5920 | } | |
5921 | idx++; | |
5922 | } | |
5923 | mutex_unlock(&port->reporters_lock); | |
5924 | } | |
5d080b50 | 5925 | mutex_unlock(&devlink->lock); |
f4f54166 | 5926 | } |
7afe335a EBE |
5927 | out: |
5928 | mutex_unlock(&devlink_mutex); | |
5929 | ||
5930 | cb->args[0] = idx; | |
5931 | return msg->len; | |
5932 | } | |
5933 | ||
a1e55ec0 EBE |
5934 | static int |
5935 | devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb, | |
5936 | struct genl_info *info) | |
5937 | { | |
5938 | struct devlink *devlink = info->user_ptr[0]; | |
5939 | struct devlink_health_reporter *reporter; | |
b587bdaf | 5940 | int err; |
a1e55ec0 EBE |
5941 | |
5942 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5943 | if (!reporter) | |
5944 | return -EINVAL; | |
5945 | ||
5946 | if (!reporter->ops->recover && | |
5947 | (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] || | |
b587bdaf MS |
5948 | info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) { |
5949 | err = -EOPNOTSUPP; | |
5950 | goto out; | |
5951 | } | |
48bb52c8 EBE |
5952 | if (!reporter->ops->dump && |
5953 | info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) { | |
5954 | err = -EOPNOTSUPP; | |
5955 | goto out; | |
5956 | } | |
a1e55ec0 EBE |
5957 | |
5958 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]) | |
5959 | reporter->graceful_period = | |
5960 | nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]); | |
5961 | ||
5962 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]) | |
5963 | reporter->auto_recover = | |
5964 | nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]); | |
5965 | ||
48bb52c8 EBE |
5966 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) |
5967 | reporter->auto_dump = | |
5968 | nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]); | |
5969 | ||
b587bdaf | 5970 | devlink_health_reporter_put(reporter); |
a1e55ec0 | 5971 | return 0; |
b587bdaf MS |
5972 | out: |
5973 | devlink_health_reporter_put(reporter); | |
5974 | return err; | |
a1e55ec0 EBE |
5975 | } |
5976 | ||
20a0943a EBE |
5977 | static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb, |
5978 | struct genl_info *info) | |
5979 | { | |
5980 | struct devlink *devlink = info->user_ptr[0]; | |
5981 | struct devlink_health_reporter *reporter; | |
b587bdaf | 5982 | int err; |
20a0943a EBE |
5983 | |
5984 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5985 | if (!reporter) | |
5986 | return -EINVAL; | |
5987 | ||
e7a98105 | 5988 | err = devlink_health_reporter_recover(reporter, NULL, info->extack); |
b587bdaf MS |
5989 | |
5990 | devlink_health_reporter_put(reporter); | |
5991 | return err; | |
20a0943a EBE |
5992 | } |
5993 | ||
fca42a27 EBE |
5994 | static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb, |
5995 | struct genl_info *info) | |
5996 | { | |
5997 | struct devlink *devlink = info->user_ptr[0]; | |
5998 | struct devlink_health_reporter *reporter; | |
5999 | struct devlink_fmsg *fmsg; | |
6000 | int err; | |
6001 | ||
6002 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6003 | if (!reporter) | |
6004 | return -EINVAL; | |
6005 | ||
b587bdaf MS |
6006 | if (!reporter->ops->diagnose) { |
6007 | devlink_health_reporter_put(reporter); | |
fca42a27 | 6008 | return -EOPNOTSUPP; |
b587bdaf | 6009 | } |
fca42a27 EBE |
6010 | |
6011 | fmsg = devlink_fmsg_alloc(); | |
b587bdaf MS |
6012 | if (!fmsg) { |
6013 | devlink_health_reporter_put(reporter); | |
fca42a27 | 6014 | return -ENOMEM; |
b587bdaf | 6015 | } |
fca42a27 EBE |
6016 | |
6017 | err = devlink_fmsg_obj_nest_start(fmsg); | |
6018 | if (err) | |
6019 | goto out; | |
6020 | ||
e7a98105 | 6021 | err = reporter->ops->diagnose(reporter, fmsg, info->extack); |
fca42a27 EBE |
6022 | if (err) |
6023 | goto out; | |
6024 | ||
6025 | err = devlink_fmsg_obj_nest_end(fmsg); | |
6026 | if (err) | |
6027 | goto out; | |
6028 | ||
6029 | err = devlink_fmsg_snd(fmsg, info, | |
6030 | DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0); | |
6031 | ||
6032 | out: | |
6033 | devlink_fmsg_free(fmsg); | |
b587bdaf | 6034 | devlink_health_reporter_put(reporter); |
fca42a27 EBE |
6035 | return err; |
6036 | } | |
6037 | ||
e44ef4e4 AL |
6038 | static int |
6039 | devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb, | |
6040 | struct netlink_callback *cb) | |
35455e23 | 6041 | { |
35455e23 | 6042 | struct devlink_health_reporter *reporter; |
e44ef4e4 | 6043 | u64 start = cb->args[0]; |
35455e23 EBE |
6044 | int err; |
6045 | ||
e44ef4e4 | 6046 | reporter = devlink_health_reporter_get_from_cb(cb); |
35455e23 EBE |
6047 | if (!reporter) |
6048 | return -EINVAL; | |
6049 | ||
b587bdaf | 6050 | if (!reporter->ops->dump) { |
e44ef4e4 AL |
6051 | err = -EOPNOTSUPP; |
6052 | goto out; | |
b587bdaf | 6053 | } |
35455e23 | 6054 | mutex_lock(&reporter->dump_lock); |
e44ef4e4 | 6055 | if (!start) { |
e7a98105 | 6056 | err = devlink_health_do_dump(reporter, NULL, cb->extack); |
e44ef4e4 AL |
6057 | if (err) |
6058 | goto unlock; | |
6059 | cb->args[1] = reporter->dump_ts; | |
6060 | } | |
6061 | if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) { | |
6062 | NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry"); | |
6063 | err = -EAGAIN; | |
6064 | goto unlock; | |
6065 | } | |
35455e23 | 6066 | |
e44ef4e4 AL |
6067 | err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb, |
6068 | DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET); | |
6069 | unlock: | |
35455e23 | 6070 | mutex_unlock(&reporter->dump_lock); |
e44ef4e4 | 6071 | out: |
b587bdaf | 6072 | devlink_health_reporter_put(reporter); |
35455e23 EBE |
6073 | return err; |
6074 | } | |
6075 | ||
6076 | static int | |
6077 | devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb, | |
6078 | struct genl_info *info) | |
6079 | { | |
6080 | struct devlink *devlink = info->user_ptr[0]; | |
6081 | struct devlink_health_reporter *reporter; | |
6082 | ||
6083 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6084 | if (!reporter) | |
6085 | return -EINVAL; | |
6086 | ||
b587bdaf MS |
6087 | if (!reporter->ops->dump) { |
6088 | devlink_health_reporter_put(reporter); | |
35455e23 | 6089 | return -EOPNOTSUPP; |
b587bdaf | 6090 | } |
35455e23 EBE |
6091 | |
6092 | mutex_lock(&reporter->dump_lock); | |
6093 | devlink_health_dump_clear(reporter); | |
6094 | mutex_unlock(&reporter->dump_lock); | |
b587bdaf | 6095 | devlink_health_reporter_put(reporter); |
35455e23 EBE |
6096 | return 0; |
6097 | } | |
6098 | ||
0f420b6c IS |
6099 | struct devlink_stats { |
6100 | u64 rx_bytes; | |
6101 | u64 rx_packets; | |
6102 | struct u64_stats_sync syncp; | |
6103 | }; | |
6104 | ||
1e8c6619 IS |
6105 | /** |
6106 | * struct devlink_trap_policer_item - Packet trap policer attributes. | |
6107 | * @policer: Immutable packet trap policer attributes. | |
6108 | * @rate: Rate in packets / sec. | |
6109 | * @burst: Burst size in packets. | |
6110 | * @list: trap_policer_list member. | |
6111 | * | |
6112 | * Describes packet trap policer attributes. Created by devlink during trap | |
6113 | * policer registration. | |
6114 | */ | |
6115 | struct devlink_trap_policer_item { | |
6116 | const struct devlink_trap_policer *policer; | |
6117 | u64 rate; | |
6118 | u64 burst; | |
6119 | struct list_head list; | |
6120 | }; | |
6121 | ||
0f420b6c IS |
6122 | /** |
6123 | * struct devlink_trap_group_item - Packet trap group attributes. | |
6124 | * @group: Immutable packet trap group attributes. | |
f9f54392 | 6125 | * @policer_item: Associated policer item. Can be NULL. |
0f420b6c IS |
6126 | * @list: trap_group_list member. |
6127 | * @stats: Trap group statistics. | |
6128 | * | |
6129 | * Describes packet trap group attributes. Created by devlink during trap | |
a09b37fc | 6130 | * group registration. |
0f420b6c IS |
6131 | */ |
6132 | struct devlink_trap_group_item { | |
6133 | const struct devlink_trap_group *group; | |
f9f54392 | 6134 | struct devlink_trap_policer_item *policer_item; |
0f420b6c IS |
6135 | struct list_head list; |
6136 | struct devlink_stats __percpu *stats; | |
6137 | }; | |
6138 | ||
6139 | /** | |
6140 | * struct devlink_trap_item - Packet trap attributes. | |
6141 | * @trap: Immutable packet trap attributes. | |
6142 | * @group_item: Associated group item. | |
6143 | * @list: trap_list member. | |
6144 | * @action: Trap action. | |
6145 | * @stats: Trap statistics. | |
6146 | * @priv: Driver private information. | |
6147 | * | |
6148 | * Describes both mutable and immutable packet trap attributes. Created by | |
6149 | * devlink during trap registration and used for all trap related operations. | |
6150 | */ | |
6151 | struct devlink_trap_item { | |
6152 | const struct devlink_trap *trap; | |
6153 | struct devlink_trap_group_item *group_item; | |
6154 | struct list_head list; | |
6155 | enum devlink_trap_action action; | |
6156 | struct devlink_stats __percpu *stats; | |
6157 | void *priv; | |
6158 | }; | |
6159 | ||
1e8c6619 IS |
6160 | static struct devlink_trap_policer_item * |
6161 | devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id) | |
6162 | { | |
6163 | struct devlink_trap_policer_item *policer_item; | |
6164 | ||
6165 | list_for_each_entry(policer_item, &devlink->trap_policer_list, list) { | |
6166 | if (policer_item->policer->id == id) | |
6167 | return policer_item; | |
6168 | } | |
6169 | ||
6170 | return NULL; | |
6171 | } | |
6172 | ||
0f420b6c IS |
6173 | static struct devlink_trap_item * |
6174 | devlink_trap_item_lookup(struct devlink *devlink, const char *name) | |
6175 | { | |
6176 | struct devlink_trap_item *trap_item; | |
6177 | ||
6178 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
6179 | if (!strcmp(trap_item->trap->name, name)) | |
6180 | return trap_item; | |
6181 | } | |
6182 | ||
6183 | return NULL; | |
6184 | } | |
6185 | ||
6186 | static struct devlink_trap_item * | |
6187 | devlink_trap_item_get_from_info(struct devlink *devlink, | |
6188 | struct genl_info *info) | |
6189 | { | |
6190 | struct nlattr *attr; | |
6191 | ||
6192 | if (!info->attrs[DEVLINK_ATTR_TRAP_NAME]) | |
6193 | return NULL; | |
6194 | attr = info->attrs[DEVLINK_ATTR_TRAP_NAME]; | |
6195 | ||
6196 | return devlink_trap_item_lookup(devlink, nla_data(attr)); | |
6197 | } | |
6198 | ||
6199 | static int | |
6200 | devlink_trap_action_get_from_info(struct genl_info *info, | |
6201 | enum devlink_trap_action *p_trap_action) | |
6202 | { | |
6203 | u8 val; | |
6204 | ||
6205 | val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]); | |
6206 | switch (val) { | |
df561f66 GS |
6207 | case DEVLINK_TRAP_ACTION_DROP: |
6208 | case DEVLINK_TRAP_ACTION_TRAP: | |
9eefeabe | 6209 | case DEVLINK_TRAP_ACTION_MIRROR: |
0f420b6c IS |
6210 | *p_trap_action = val; |
6211 | break; | |
6212 | default: | |
6213 | return -EINVAL; | |
6214 | } | |
6215 | ||
6216 | return 0; | |
6217 | } | |
6218 | ||
6219 | static int devlink_trap_metadata_put(struct sk_buff *msg, | |
6220 | const struct devlink_trap *trap) | |
6221 | { | |
6222 | struct nlattr *attr; | |
6223 | ||
6224 | attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA); | |
6225 | if (!attr) | |
6226 | return -EMSGSIZE; | |
6227 | ||
6228 | if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) && | |
6229 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT)) | |
6230 | goto nla_put_failure; | |
85b0589e JP |
6231 | if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) && |
6232 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE)) | |
6233 | goto nla_put_failure; | |
0f420b6c IS |
6234 | |
6235 | nla_nest_end(msg, attr); | |
6236 | ||
6237 | return 0; | |
6238 | ||
6239 | nla_put_failure: | |
6240 | nla_nest_cancel(msg, attr); | |
6241 | return -EMSGSIZE; | |
6242 | } | |
6243 | ||
6244 | static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats, | |
6245 | struct devlink_stats *stats) | |
6246 | { | |
6247 | int i; | |
6248 | ||
6249 | memset(stats, 0, sizeof(*stats)); | |
6250 | for_each_possible_cpu(i) { | |
6251 | struct devlink_stats *cpu_stats; | |
6252 | u64 rx_packets, rx_bytes; | |
6253 | unsigned int start; | |
6254 | ||
6255 | cpu_stats = per_cpu_ptr(trap_stats, i); | |
6256 | do { | |
6257 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
6258 | rx_packets = cpu_stats->rx_packets; | |
6259 | rx_bytes = cpu_stats->rx_bytes; | |
6260 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
6261 | ||
6262 | stats->rx_packets += rx_packets; | |
6263 | stats->rx_bytes += rx_bytes; | |
6264 | } | |
6265 | } | |
6266 | ||
6267 | static int devlink_trap_stats_put(struct sk_buff *msg, | |
6268 | struct devlink_stats __percpu *trap_stats) | |
6269 | { | |
6270 | struct devlink_stats stats; | |
6271 | struct nlattr *attr; | |
6272 | ||
6273 | devlink_trap_stats_read(trap_stats, &stats); | |
6274 | ||
6275 | attr = nla_nest_start(msg, DEVLINK_ATTR_STATS); | |
6276 | if (!attr) | |
6277 | return -EMSGSIZE; | |
6278 | ||
6279 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS, | |
6280 | stats.rx_packets, DEVLINK_ATTR_PAD)) | |
6281 | goto nla_put_failure; | |
6282 | ||
6283 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES, | |
6284 | stats.rx_bytes, DEVLINK_ATTR_PAD)) | |
6285 | goto nla_put_failure; | |
6286 | ||
6287 | nla_nest_end(msg, attr); | |
6288 | ||
6289 | return 0; | |
6290 | ||
6291 | nla_put_failure: | |
6292 | nla_nest_cancel(msg, attr); | |
6293 | return -EMSGSIZE; | |
6294 | } | |
6295 | ||
6296 | static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink, | |
6297 | const struct devlink_trap_item *trap_item, | |
6298 | enum devlink_command cmd, u32 portid, u32 seq, | |
6299 | int flags) | |
6300 | { | |
6301 | struct devlink_trap_group_item *group_item = trap_item->group_item; | |
6302 | void *hdr; | |
6303 | int err; | |
6304 | ||
6305 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6306 | if (!hdr) | |
6307 | return -EMSGSIZE; | |
6308 | ||
6309 | if (devlink_nl_put_handle(msg, devlink)) | |
6310 | goto nla_put_failure; | |
6311 | ||
6312 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME, | |
6313 | group_item->group->name)) | |
6314 | goto nla_put_failure; | |
6315 | ||
6316 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name)) | |
6317 | goto nla_put_failure; | |
6318 | ||
6319 | if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type)) | |
6320 | goto nla_put_failure; | |
6321 | ||
6322 | if (trap_item->trap->generic && | |
6323 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC)) | |
6324 | goto nla_put_failure; | |
6325 | ||
6326 | if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action)) | |
6327 | goto nla_put_failure; | |
6328 | ||
6329 | err = devlink_trap_metadata_put(msg, trap_item->trap); | |
6330 | if (err) | |
6331 | goto nla_put_failure; | |
6332 | ||
6333 | err = devlink_trap_stats_put(msg, trap_item->stats); | |
6334 | if (err) | |
6335 | goto nla_put_failure; | |
6336 | ||
6337 | genlmsg_end(msg, hdr); | |
6338 | ||
6339 | return 0; | |
6340 | ||
6341 | nla_put_failure: | |
6342 | genlmsg_cancel(msg, hdr); | |
6343 | return -EMSGSIZE; | |
6344 | } | |
6345 | ||
6346 | static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb, | |
6347 | struct genl_info *info) | |
6348 | { | |
6349 | struct netlink_ext_ack *extack = info->extack; | |
6350 | struct devlink *devlink = info->user_ptr[0]; | |
6351 | struct devlink_trap_item *trap_item; | |
6352 | struct sk_buff *msg; | |
6353 | int err; | |
6354 | ||
6355 | if (list_empty(&devlink->trap_list)) | |
6356 | return -EOPNOTSUPP; | |
6357 | ||
6358 | trap_item = devlink_trap_item_get_from_info(devlink, info); | |
6359 | if (!trap_item) { | |
6360 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap"); | |
6361 | return -ENOENT; | |
6362 | } | |
6363 | ||
6364 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6365 | if (!msg) | |
6366 | return -ENOMEM; | |
6367 | ||
6368 | err = devlink_nl_trap_fill(msg, devlink, trap_item, | |
6369 | DEVLINK_CMD_TRAP_NEW, info->snd_portid, | |
6370 | info->snd_seq, 0); | |
6371 | if (err) | |
6372 | goto err_trap_fill; | |
6373 | ||
6374 | return genlmsg_reply(msg, info); | |
6375 | ||
6376 | err_trap_fill: | |
6377 | nlmsg_free(msg); | |
6378 | return err; | |
6379 | } | |
6380 | ||
6381 | static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg, | |
6382 | struct netlink_callback *cb) | |
6383 | { | |
6384 | struct devlink_trap_item *trap_item; | |
6385 | struct devlink *devlink; | |
6386 | int start = cb->args[0]; | |
6387 | int idx = 0; | |
6388 | int err; | |
6389 | ||
6390 | mutex_lock(&devlink_mutex); | |
6391 | list_for_each_entry(devlink, &devlink_list, list) { | |
6392 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6393 | continue; | |
6394 | mutex_lock(&devlink->lock); | |
6395 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
6396 | if (idx < start) { | |
6397 | idx++; | |
6398 | continue; | |
6399 | } | |
6400 | err = devlink_nl_trap_fill(msg, devlink, trap_item, | |
6401 | DEVLINK_CMD_TRAP_NEW, | |
6402 | NETLINK_CB(cb->skb).portid, | |
6403 | cb->nlh->nlmsg_seq, | |
6404 | NLM_F_MULTI); | |
6405 | if (err) { | |
6406 | mutex_unlock(&devlink->lock); | |
6407 | goto out; | |
6408 | } | |
6409 | idx++; | |
6410 | } | |
6411 | mutex_unlock(&devlink->lock); | |
6412 | } | |
6413 | out: | |
6414 | mutex_unlock(&devlink_mutex); | |
6415 | ||
6416 | cb->args[0] = idx; | |
6417 | return msg->len; | |
6418 | } | |
6419 | ||
6420 | static int __devlink_trap_action_set(struct devlink *devlink, | |
6421 | struct devlink_trap_item *trap_item, | |
6422 | enum devlink_trap_action trap_action, | |
6423 | struct netlink_ext_ack *extack) | |
6424 | { | |
6425 | int err; | |
6426 | ||
6427 | if (trap_item->action != trap_action && | |
6428 | trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) { | |
6429 | NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping"); | |
6430 | return 0; | |
6431 | } | |
6432 | ||
6433 | err = devlink->ops->trap_action_set(devlink, trap_item->trap, | |
c88e11e0 | 6434 | trap_action, extack); |
0f420b6c IS |
6435 | if (err) |
6436 | return err; | |
6437 | ||
6438 | trap_item->action = trap_action; | |
6439 | ||
6440 | return 0; | |
6441 | } | |
6442 | ||
6443 | static int devlink_trap_action_set(struct devlink *devlink, | |
6444 | struct devlink_trap_item *trap_item, | |
6445 | struct genl_info *info) | |
6446 | { | |
6447 | enum devlink_trap_action trap_action; | |
6448 | int err; | |
6449 | ||
6450 | if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION]) | |
6451 | return 0; | |
6452 | ||
6453 | err = devlink_trap_action_get_from_info(info, &trap_action); | |
6454 | if (err) { | |
6455 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action"); | |
6456 | return -EINVAL; | |
6457 | } | |
6458 | ||
6459 | return __devlink_trap_action_set(devlink, trap_item, trap_action, | |
6460 | info->extack); | |
6461 | } | |
6462 | ||
6463 | static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb, | |
6464 | struct genl_info *info) | |
6465 | { | |
6466 | struct netlink_ext_ack *extack = info->extack; | |
6467 | struct devlink *devlink = info->user_ptr[0]; | |
6468 | struct devlink_trap_item *trap_item; | |
6469 | int err; | |
6470 | ||
6471 | if (list_empty(&devlink->trap_list)) | |
6472 | return -EOPNOTSUPP; | |
6473 | ||
6474 | trap_item = devlink_trap_item_get_from_info(devlink, info); | |
6475 | if (!trap_item) { | |
6476 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap"); | |
6477 | return -ENOENT; | |
6478 | } | |
6479 | ||
6480 | err = devlink_trap_action_set(devlink, trap_item, info); | |
6481 | if (err) | |
6482 | return err; | |
6483 | ||
6484 | return 0; | |
6485 | } | |
6486 | ||
6487 | static struct devlink_trap_group_item * | |
6488 | devlink_trap_group_item_lookup(struct devlink *devlink, const char *name) | |
6489 | { | |
6490 | struct devlink_trap_group_item *group_item; | |
6491 | ||
6492 | list_for_each_entry(group_item, &devlink->trap_group_list, list) { | |
6493 | if (!strcmp(group_item->group->name, name)) | |
6494 | return group_item; | |
6495 | } | |
6496 | ||
6497 | return NULL; | |
6498 | } | |
6499 | ||
107f1678 IS |
6500 | static struct devlink_trap_group_item * |
6501 | devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id) | |
6502 | { | |
6503 | struct devlink_trap_group_item *group_item; | |
6504 | ||
6505 | list_for_each_entry(group_item, &devlink->trap_group_list, list) { | |
6506 | if (group_item->group->id == id) | |
6507 | return group_item; | |
6508 | } | |
6509 | ||
6510 | return NULL; | |
6511 | } | |
6512 | ||
0f420b6c IS |
6513 | static struct devlink_trap_group_item * |
6514 | devlink_trap_group_item_get_from_info(struct devlink *devlink, | |
6515 | struct genl_info *info) | |
6516 | { | |
6517 | char *name; | |
6518 | ||
6519 | if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]) | |
6520 | return NULL; | |
6521 | name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]); | |
6522 | ||
6523 | return devlink_trap_group_item_lookup(devlink, name); | |
6524 | } | |
6525 | ||
6526 | static int | |
6527 | devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink, | |
6528 | const struct devlink_trap_group_item *group_item, | |
6529 | enum devlink_command cmd, u32 portid, u32 seq, | |
6530 | int flags) | |
6531 | { | |
6532 | void *hdr; | |
6533 | int err; | |
6534 | ||
6535 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6536 | if (!hdr) | |
6537 | return -EMSGSIZE; | |
6538 | ||
6539 | if (devlink_nl_put_handle(msg, devlink)) | |
6540 | goto nla_put_failure; | |
6541 | ||
6542 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME, | |
6543 | group_item->group->name)) | |
6544 | goto nla_put_failure; | |
6545 | ||
6546 | if (group_item->group->generic && | |
6547 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC)) | |
6548 | goto nla_put_failure; | |
6549 | ||
f9f54392 IS |
6550 | if (group_item->policer_item && |
6551 | nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID, | |
6552 | group_item->policer_item->policer->id)) | |
6553 | goto nla_put_failure; | |
6554 | ||
0f420b6c IS |
6555 | err = devlink_trap_stats_put(msg, group_item->stats); |
6556 | if (err) | |
6557 | goto nla_put_failure; | |
6558 | ||
6559 | genlmsg_end(msg, hdr); | |
6560 | ||
6561 | return 0; | |
6562 | ||
6563 | nla_put_failure: | |
6564 | genlmsg_cancel(msg, hdr); | |
6565 | return -EMSGSIZE; | |
6566 | } | |
6567 | ||
6568 | static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb, | |
6569 | struct genl_info *info) | |
6570 | { | |
6571 | struct netlink_ext_ack *extack = info->extack; | |
6572 | struct devlink *devlink = info->user_ptr[0]; | |
6573 | struct devlink_trap_group_item *group_item; | |
6574 | struct sk_buff *msg; | |
6575 | int err; | |
6576 | ||
6577 | if (list_empty(&devlink->trap_group_list)) | |
6578 | return -EOPNOTSUPP; | |
6579 | ||
6580 | group_item = devlink_trap_group_item_get_from_info(devlink, info); | |
6581 | if (!group_item) { | |
6582 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group"); | |
6583 | return -ENOENT; | |
6584 | } | |
6585 | ||
6586 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6587 | if (!msg) | |
6588 | return -ENOMEM; | |
6589 | ||
6590 | err = devlink_nl_trap_group_fill(msg, devlink, group_item, | |
6591 | DEVLINK_CMD_TRAP_GROUP_NEW, | |
6592 | info->snd_portid, info->snd_seq, 0); | |
6593 | if (err) | |
6594 | goto err_trap_group_fill; | |
6595 | ||
6596 | return genlmsg_reply(msg, info); | |
6597 | ||
6598 | err_trap_group_fill: | |
6599 | nlmsg_free(msg); | |
6600 | return err; | |
6601 | } | |
6602 | ||
6603 | static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg, | |
6604 | struct netlink_callback *cb) | |
6605 | { | |
6606 | enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW; | |
6607 | struct devlink_trap_group_item *group_item; | |
6608 | u32 portid = NETLINK_CB(cb->skb).portid; | |
6609 | struct devlink *devlink; | |
6610 | int start = cb->args[0]; | |
6611 | int idx = 0; | |
6612 | int err; | |
6613 | ||
6614 | mutex_lock(&devlink_mutex); | |
6615 | list_for_each_entry(devlink, &devlink_list, list) { | |
6616 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6617 | continue; | |
6618 | mutex_lock(&devlink->lock); | |
6619 | list_for_each_entry(group_item, &devlink->trap_group_list, | |
6620 | list) { | |
6621 | if (idx < start) { | |
6622 | idx++; | |
6623 | continue; | |
6624 | } | |
6625 | err = devlink_nl_trap_group_fill(msg, devlink, | |
6626 | group_item, cmd, | |
6627 | portid, | |
6628 | cb->nlh->nlmsg_seq, | |
6629 | NLM_F_MULTI); | |
6630 | if (err) { | |
6631 | mutex_unlock(&devlink->lock); | |
6632 | goto out; | |
6633 | } | |
6634 | idx++; | |
6635 | } | |
6636 | mutex_unlock(&devlink->lock); | |
6637 | } | |
6638 | out: | |
6639 | mutex_unlock(&devlink_mutex); | |
6640 | ||
6641 | cb->args[0] = idx; | |
6642 | return msg->len; | |
6643 | } | |
6644 | ||
6645 | static int | |
6646 | __devlink_trap_group_action_set(struct devlink *devlink, | |
6647 | struct devlink_trap_group_item *group_item, | |
6648 | enum devlink_trap_action trap_action, | |
6649 | struct netlink_ext_ack *extack) | |
6650 | { | |
6651 | const char *group_name = group_item->group->name; | |
6652 | struct devlink_trap_item *trap_item; | |
6653 | int err; | |
6654 | ||
6655 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
107f1678 | 6656 | if (strcmp(trap_item->group_item->group->name, group_name)) |
0f420b6c IS |
6657 | continue; |
6658 | err = __devlink_trap_action_set(devlink, trap_item, | |
6659 | trap_action, extack); | |
6660 | if (err) | |
6661 | return err; | |
6662 | } | |
6663 | ||
6664 | return 0; | |
6665 | } | |
6666 | ||
6667 | static int | |
6668 | devlink_trap_group_action_set(struct devlink *devlink, | |
6669 | struct devlink_trap_group_item *group_item, | |
c064875a | 6670 | struct genl_info *info, bool *p_modified) |
0f420b6c IS |
6671 | { |
6672 | enum devlink_trap_action trap_action; | |
6673 | int err; | |
6674 | ||
6675 | if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION]) | |
6676 | return 0; | |
6677 | ||
6678 | err = devlink_trap_action_get_from_info(info, &trap_action); | |
6679 | if (err) { | |
6680 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action"); | |
6681 | return -EINVAL; | |
6682 | } | |
6683 | ||
6684 | err = __devlink_trap_group_action_set(devlink, group_item, trap_action, | |
6685 | info->extack); | |
6686 | if (err) | |
6687 | return err; | |
6688 | ||
c064875a IS |
6689 | *p_modified = true; |
6690 | ||
6691 | return 0; | |
6692 | } | |
6693 | ||
6694 | static int devlink_trap_group_set(struct devlink *devlink, | |
6695 | struct devlink_trap_group_item *group_item, | |
6696 | struct genl_info *info) | |
6697 | { | |
6698 | struct devlink_trap_policer_item *policer_item; | |
6699 | struct netlink_ext_ack *extack = info->extack; | |
6700 | const struct devlink_trap_policer *policer; | |
6701 | struct nlattr **attrs = info->attrs; | |
6702 | int err; | |
6703 | ||
6704 | if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) | |
6705 | return 0; | |
6706 | ||
6707 | if (!devlink->ops->trap_group_set) | |
6708 | return -EOPNOTSUPP; | |
6709 | ||
6710 | policer_item = group_item->policer_item; | |
6711 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) { | |
6712 | u32 policer_id; | |
6713 | ||
6714 | policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]); | |
6715 | policer_item = devlink_trap_policer_item_lookup(devlink, | |
6716 | policer_id); | |
6717 | if (policer_id && !policer_item) { | |
6718 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
6719 | return -ENOENT; | |
6720 | } | |
6721 | } | |
6722 | policer = policer_item ? policer_item->policer : NULL; | |
6723 | ||
c88e11e0 IS |
6724 | err = devlink->ops->trap_group_set(devlink, group_item->group, policer, |
6725 | extack); | |
c064875a IS |
6726 | if (err) |
6727 | return err; | |
6728 | ||
6729 | group_item->policer_item = policer_item; | |
6730 | ||
0f420b6c IS |
6731 | return 0; |
6732 | } | |
6733 | ||
6734 | static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb, | |
6735 | struct genl_info *info) | |
6736 | { | |
6737 | struct netlink_ext_ack *extack = info->extack; | |
6738 | struct devlink *devlink = info->user_ptr[0]; | |
6739 | struct devlink_trap_group_item *group_item; | |
c064875a | 6740 | bool modified = false; |
0f420b6c IS |
6741 | int err; |
6742 | ||
6743 | if (list_empty(&devlink->trap_group_list)) | |
6744 | return -EOPNOTSUPP; | |
6745 | ||
6746 | group_item = devlink_trap_group_item_get_from_info(devlink, info); | |
6747 | if (!group_item) { | |
6748 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group"); | |
6749 | return -ENOENT; | |
6750 | } | |
6751 | ||
c064875a IS |
6752 | err = devlink_trap_group_action_set(devlink, group_item, info, |
6753 | &modified); | |
0f420b6c IS |
6754 | if (err) |
6755 | return err; | |
6756 | ||
c064875a IS |
6757 | err = devlink_trap_group_set(devlink, group_item, info); |
6758 | if (err) | |
6759 | goto err_trap_group_set; | |
6760 | ||
0f420b6c | 6761 | return 0; |
c064875a IS |
6762 | |
6763 | err_trap_group_set: | |
6764 | if (modified) | |
6765 | NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already"); | |
6766 | return err; | |
0f420b6c IS |
6767 | } |
6768 | ||
1e8c6619 IS |
6769 | static struct devlink_trap_policer_item * |
6770 | devlink_trap_policer_item_get_from_info(struct devlink *devlink, | |
6771 | struct genl_info *info) | |
6772 | { | |
6773 | u32 id; | |
6774 | ||
6775 | if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) | |
6776 | return NULL; | |
6777 | id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]); | |
6778 | ||
6779 | return devlink_trap_policer_item_lookup(devlink, id); | |
6780 | } | |
6781 | ||
6782 | static int | |
6783 | devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink, | |
6784 | const struct devlink_trap_policer *policer) | |
6785 | { | |
6786 | struct nlattr *attr; | |
6787 | u64 drops; | |
6788 | int err; | |
6789 | ||
6790 | if (!devlink->ops->trap_policer_counter_get) | |
6791 | return 0; | |
6792 | ||
6793 | err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops); | |
6794 | if (err) | |
6795 | return err; | |
6796 | ||
6797 | attr = nla_nest_start(msg, DEVLINK_ATTR_STATS); | |
6798 | if (!attr) | |
6799 | return -EMSGSIZE; | |
6800 | ||
6801 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops, | |
6802 | DEVLINK_ATTR_PAD)) | |
6803 | goto nla_put_failure; | |
6804 | ||
6805 | nla_nest_end(msg, attr); | |
6806 | ||
6807 | return 0; | |
6808 | ||
6809 | nla_put_failure: | |
6810 | nla_nest_cancel(msg, attr); | |
6811 | return -EMSGSIZE; | |
6812 | } | |
6813 | ||
6814 | static int | |
6815 | devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink, | |
6816 | const struct devlink_trap_policer_item *policer_item, | |
6817 | enum devlink_command cmd, u32 portid, u32 seq, | |
6818 | int flags) | |
6819 | { | |
6820 | void *hdr; | |
6821 | int err; | |
6822 | ||
6823 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6824 | if (!hdr) | |
6825 | return -EMSGSIZE; | |
6826 | ||
6827 | if (devlink_nl_put_handle(msg, devlink)) | |
6828 | goto nla_put_failure; | |
6829 | ||
6830 | if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID, | |
6831 | policer_item->policer->id)) | |
6832 | goto nla_put_failure; | |
6833 | ||
6834 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE, | |
6835 | policer_item->rate, DEVLINK_ATTR_PAD)) | |
6836 | goto nla_put_failure; | |
6837 | ||
6838 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST, | |
6839 | policer_item->burst, DEVLINK_ATTR_PAD)) | |
6840 | goto nla_put_failure; | |
6841 | ||
6842 | err = devlink_trap_policer_stats_put(msg, devlink, | |
6843 | policer_item->policer); | |
6844 | if (err) | |
6845 | goto nla_put_failure; | |
6846 | ||
6847 | genlmsg_end(msg, hdr); | |
6848 | ||
6849 | return 0; | |
6850 | ||
6851 | nla_put_failure: | |
6852 | genlmsg_cancel(msg, hdr); | |
6853 | return -EMSGSIZE; | |
6854 | } | |
6855 | ||
6856 | static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb, | |
6857 | struct genl_info *info) | |
6858 | { | |
6859 | struct devlink_trap_policer_item *policer_item; | |
6860 | struct netlink_ext_ack *extack = info->extack; | |
6861 | struct devlink *devlink = info->user_ptr[0]; | |
6862 | struct sk_buff *msg; | |
6863 | int err; | |
6864 | ||
6865 | if (list_empty(&devlink->trap_policer_list)) | |
6866 | return -EOPNOTSUPP; | |
6867 | ||
6868 | policer_item = devlink_trap_policer_item_get_from_info(devlink, info); | |
6869 | if (!policer_item) { | |
6870 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
6871 | return -ENOENT; | |
6872 | } | |
6873 | ||
6874 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6875 | if (!msg) | |
6876 | return -ENOMEM; | |
6877 | ||
6878 | err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, | |
6879 | DEVLINK_CMD_TRAP_POLICER_NEW, | |
6880 | info->snd_portid, info->snd_seq, 0); | |
6881 | if (err) | |
6882 | goto err_trap_policer_fill; | |
6883 | ||
6884 | return genlmsg_reply(msg, info); | |
6885 | ||
6886 | err_trap_policer_fill: | |
6887 | nlmsg_free(msg); | |
6888 | return err; | |
6889 | } | |
6890 | ||
6891 | static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg, | |
6892 | struct netlink_callback *cb) | |
6893 | { | |
6894 | enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW; | |
6895 | struct devlink_trap_policer_item *policer_item; | |
6896 | u32 portid = NETLINK_CB(cb->skb).portid; | |
6897 | struct devlink *devlink; | |
6898 | int start = cb->args[0]; | |
6899 | int idx = 0; | |
6900 | int err; | |
6901 | ||
6902 | mutex_lock(&devlink_mutex); | |
6903 | list_for_each_entry(devlink, &devlink_list, list) { | |
6904 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6905 | continue; | |
6906 | mutex_lock(&devlink->lock); | |
6907 | list_for_each_entry(policer_item, &devlink->trap_policer_list, | |
6908 | list) { | |
6909 | if (idx < start) { | |
6910 | idx++; | |
6911 | continue; | |
6912 | } | |
6913 | err = devlink_nl_trap_policer_fill(msg, devlink, | |
6914 | policer_item, cmd, | |
6915 | portid, | |
6916 | cb->nlh->nlmsg_seq, | |
6917 | NLM_F_MULTI); | |
6918 | if (err) { | |
6919 | mutex_unlock(&devlink->lock); | |
6920 | goto out; | |
6921 | } | |
6922 | idx++; | |
6923 | } | |
6924 | mutex_unlock(&devlink->lock); | |
6925 | } | |
6926 | out: | |
6927 | mutex_unlock(&devlink_mutex); | |
6928 | ||
6929 | cb->args[0] = idx; | |
6930 | return msg->len; | |
6931 | } | |
6932 | ||
6933 | static int | |
6934 | devlink_trap_policer_set(struct devlink *devlink, | |
6935 | struct devlink_trap_policer_item *policer_item, | |
6936 | struct genl_info *info) | |
6937 | { | |
6938 | struct netlink_ext_ack *extack = info->extack; | |
6939 | struct nlattr **attrs = info->attrs; | |
6940 | u64 rate, burst; | |
6941 | int err; | |
6942 | ||
6943 | rate = policer_item->rate; | |
6944 | burst = policer_item->burst; | |
6945 | ||
6946 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]) | |
6947 | rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]); | |
6948 | ||
6949 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]) | |
6950 | burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]); | |
6951 | ||
6952 | if (rate < policer_item->policer->min_rate) { | |
6953 | NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit"); | |
6954 | return -EINVAL; | |
6955 | } | |
6956 | ||
6957 | if (rate > policer_item->policer->max_rate) { | |
6958 | NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit"); | |
6959 | return -EINVAL; | |
6960 | } | |
6961 | ||
6962 | if (burst < policer_item->policer->min_burst) { | |
6963 | NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit"); | |
6964 | return -EINVAL; | |
6965 | } | |
6966 | ||
6967 | if (burst > policer_item->policer->max_burst) { | |
6968 | NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit"); | |
6969 | return -EINVAL; | |
6970 | } | |
6971 | ||
6972 | err = devlink->ops->trap_policer_set(devlink, policer_item->policer, | |
6973 | rate, burst, info->extack); | |
6974 | if (err) | |
6975 | return err; | |
6976 | ||
6977 | policer_item->rate = rate; | |
6978 | policer_item->burst = burst; | |
6979 | ||
6980 | return 0; | |
6981 | } | |
6982 | ||
6983 | static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb, | |
6984 | struct genl_info *info) | |
6985 | { | |
6986 | struct devlink_trap_policer_item *policer_item; | |
6987 | struct netlink_ext_ack *extack = info->extack; | |
6988 | struct devlink *devlink = info->user_ptr[0]; | |
6989 | ||
6990 | if (list_empty(&devlink->trap_policer_list)) | |
6991 | return -EOPNOTSUPP; | |
6992 | ||
6993 | if (!devlink->ops->trap_policer_set) | |
6994 | return -EOPNOTSUPP; | |
6995 | ||
6996 | policer_item = devlink_trap_policer_item_get_from_info(devlink, info); | |
6997 | if (!policer_item) { | |
6998 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
6999 | return -ENOENT; | |
7000 | } | |
7001 | ||
7002 | return devlink_trap_policer_set(devlink, policer_item, info); | |
7003 | } | |
7004 | ||
bfcd3a46 | 7005 | static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { |
1e8c6619 IS |
7006 | [DEVLINK_ATTR_UNSPEC] = { .strict_start_type = |
7007 | DEVLINK_ATTR_TRAP_POLICER_ID }, | |
bfcd3a46 JP |
7008 | [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING }, |
7009 | [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING }, | |
7010 | [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 }, | |
7011 | [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 }, | |
7012 | [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 }, | |
bf797471 JP |
7013 | [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 }, |
7014 | [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 }, | |
7015 | [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 }, | |
7016 | [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 }, | |
7017 | [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 }, | |
7018 | [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 }, | |
7019 | [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 }, | |
08f4b591 | 7020 | [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 }, |
59bfde01 | 7021 | [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 }, |
f43e9b06 | 7022 | [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 }, |
1555d204 AS |
7023 | [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING }, |
7024 | [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 }, | |
d9f9b9a4 AS |
7025 | [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64}, |
7026 | [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64}, | |
e3b7ca18 MS |
7027 | [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING }, |
7028 | [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 }, | |
7029 | [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 }, | |
d8db7ea5 | 7030 | [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, |
866319bb | 7031 | [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 }, |
ff3b63b8 JK |
7032 | [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 }, |
7033 | [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 }, | |
7afe335a | 7034 | [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING }, |
a1e55ec0 EBE |
7035 | [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 }, |
7036 | [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 }, | |
76726ccb JK |
7037 | [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING }, |
7038 | [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING }, | |
0f420b6c IS |
7039 | [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING }, |
7040 | [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 }, | |
7041 | [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING }, | |
070c63f2 JP |
7042 | [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 }, |
7043 | [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 }, | |
7044 | [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 }, | |
48bb52c8 | 7045 | [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 }, |
1e8c6619 IS |
7046 | [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 }, |
7047 | [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 }, | |
7048 | [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 }, | |
a1e8ae90 | 7049 | [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED }, |
bfcd3a46 JP |
7050 | }; |
7051 | ||
7052 | static const struct genl_ops devlink_nl_ops[] = { | |
7053 | { | |
7054 | .cmd = DEVLINK_CMD_GET, | |
ef6243ac | 7055 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 JP |
7056 | .doit = devlink_nl_cmd_get_doit, |
7057 | .dumpit = devlink_nl_cmd_get_dumpit, | |
bfcd3a46 JP |
7058 | /* can be retrieved by unprivileged users */ |
7059 | }, | |
7060 | { | |
7061 | .cmd = DEVLINK_CMD_PORT_GET, | |
ef6243ac | 7062 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 JP |
7063 | .doit = devlink_nl_cmd_port_get_doit, |
7064 | .dumpit = devlink_nl_cmd_port_get_dumpit, | |
bfcd3a46 JP |
7065 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
7066 | /* can be retrieved by unprivileged users */ | |
7067 | }, | |
7068 | { | |
7069 | .cmd = DEVLINK_CMD_PORT_SET, | |
ef6243ac | 7070 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7071 | .doit = devlink_nl_cmd_port_set_doit, |
bfcd3a46 JP |
7072 | .flags = GENL_ADMIN_PERM, |
7073 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, | |
7074 | }, | |
7075 | { | |
7076 | .cmd = DEVLINK_CMD_PORT_SPLIT, | |
ef6243ac | 7077 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7078 | .doit = devlink_nl_cmd_port_split_doit, |
bfcd3a46 | 7079 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7080 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
bfcd3a46 JP |
7081 | }, |
7082 | { | |
7083 | .cmd = DEVLINK_CMD_PORT_UNSPLIT, | |
ef6243ac | 7084 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7085 | .doit = devlink_nl_cmd_port_unsplit_doit, |
bfcd3a46 | 7086 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7087 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
bfcd3a46 | 7088 | }, |
bf797471 JP |
7089 | { |
7090 | .cmd = DEVLINK_CMD_SB_GET, | |
ef6243ac | 7091 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7092 | .doit = devlink_nl_cmd_sb_get_doit, |
7093 | .dumpit = devlink_nl_cmd_sb_get_dumpit, | |
bf797471 JP |
7094 | /* can be retrieved by unprivileged users */ |
7095 | }, | |
7096 | { | |
7097 | .cmd = DEVLINK_CMD_SB_POOL_GET, | |
ef6243ac | 7098 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7099 | .doit = devlink_nl_cmd_sb_pool_get_doit, |
7100 | .dumpit = devlink_nl_cmd_sb_pool_get_dumpit, | |
bf797471 JP |
7101 | /* can be retrieved by unprivileged users */ |
7102 | }, | |
7103 | { | |
7104 | .cmd = DEVLINK_CMD_SB_POOL_SET, | |
ef6243ac | 7105 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7106 | .doit = devlink_nl_cmd_sb_pool_set_doit, |
bf797471 | 7107 | .flags = GENL_ADMIN_PERM, |
bf797471 JP |
7108 | }, |
7109 | { | |
7110 | .cmd = DEVLINK_CMD_SB_PORT_POOL_GET, | |
ef6243ac | 7111 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7112 | .doit = devlink_nl_cmd_sb_port_pool_get_doit, |
7113 | .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit, | |
637989b5 | 7114 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7115 | /* can be retrieved by unprivileged users */ |
7116 | }, | |
7117 | { | |
7118 | .cmd = DEVLINK_CMD_SB_PORT_POOL_SET, | |
ef6243ac | 7119 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7120 | .doit = devlink_nl_cmd_sb_port_pool_set_doit, |
bf797471 | 7121 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7122 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7123 | }, |
7124 | { | |
7125 | .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET, | |
ef6243ac | 7126 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7127 | .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit, |
7128 | .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit, | |
637989b5 | 7129 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7130 | /* can be retrieved by unprivileged users */ |
7131 | }, | |
7132 | { | |
7133 | .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET, | |
ef6243ac | 7134 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7135 | .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit, |
bf797471 | 7136 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7137 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 | 7138 | }, |
df38dafd JP |
7139 | { |
7140 | .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT, | |
ef6243ac | 7141 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
df38dafd | 7142 | .doit = devlink_nl_cmd_sb_occ_snapshot_doit, |
df38dafd | 7143 | .flags = GENL_ADMIN_PERM, |
df38dafd JP |
7144 | }, |
7145 | { | |
7146 | .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR, | |
ef6243ac | 7147 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
df38dafd | 7148 | .doit = devlink_nl_cmd_sb_occ_max_clear_doit, |
df38dafd | 7149 | .flags = GENL_ADMIN_PERM, |
df38dafd | 7150 | }, |
08f4b591 | 7151 | { |
adf200f3 | 7152 | .cmd = DEVLINK_CMD_ESWITCH_GET, |
ef6243ac | 7153 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
adf200f3 | 7154 | .doit = devlink_nl_cmd_eswitch_get_doit, |
08f4b591 | 7155 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7156 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
08f4b591 OG |
7157 | }, |
7158 | { | |
adf200f3 | 7159 | .cmd = DEVLINK_CMD_ESWITCH_SET, |
ef6243ac | 7160 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
adf200f3 | 7161 | .doit = devlink_nl_cmd_eswitch_set_doit, |
08f4b591 | 7162 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7163 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
08f4b591 | 7164 | }, |
1555d204 AS |
7165 | { |
7166 | .cmd = DEVLINK_CMD_DPIPE_TABLE_GET, | |
ef6243ac | 7167 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7168 | .doit = devlink_nl_cmd_dpipe_table_get, |
67ae686b | 7169 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7170 | }, |
7171 | { | |
7172 | .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET, | |
ef6243ac | 7173 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7174 | .doit = devlink_nl_cmd_dpipe_entries_get, |
67ae686b | 7175 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7176 | }, |
7177 | { | |
7178 | .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET, | |
ef6243ac | 7179 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7180 | .doit = devlink_nl_cmd_dpipe_headers_get, |
67ae686b | 7181 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7182 | }, |
7183 | { | |
7184 | .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET, | |
ef6243ac | 7185 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7186 | .doit = devlink_nl_cmd_dpipe_table_counters_set, |
1555d204 | 7187 | .flags = GENL_ADMIN_PERM, |
1555d204 | 7188 | }, |
d9f9b9a4 AS |
7189 | { |
7190 | .cmd = DEVLINK_CMD_RESOURCE_SET, | |
ef6243ac | 7191 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9f9b9a4 | 7192 | .doit = devlink_nl_cmd_resource_set, |
d9f9b9a4 | 7193 | .flags = GENL_ADMIN_PERM, |
d9f9b9a4 AS |
7194 | }, |
7195 | { | |
7196 | .cmd = DEVLINK_CMD_RESOURCE_DUMP, | |
ef6243ac | 7197 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9f9b9a4 | 7198 | .doit = devlink_nl_cmd_resource_dump, |
67ae686b | 7199 | /* can be retrieved by unprivileged users */ |
d9f9b9a4 | 7200 | }, |
2d8dc5bb AS |
7201 | { |
7202 | .cmd = DEVLINK_CMD_RELOAD, | |
ef6243ac | 7203 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
2d8dc5bb | 7204 | .doit = devlink_nl_cmd_reload, |
2d8dc5bb | 7205 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7206 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
2d8dc5bb | 7207 | }, |
45f05def MS |
7208 | { |
7209 | .cmd = DEVLINK_CMD_PARAM_GET, | |
ef6243ac | 7210 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
45f05def MS |
7211 | .doit = devlink_nl_cmd_param_get_doit, |
7212 | .dumpit = devlink_nl_cmd_param_get_dumpit, | |
45f05def MS |
7213 | /* can be retrieved by unprivileged users */ |
7214 | }, | |
e3b7ca18 MS |
7215 | { |
7216 | .cmd = DEVLINK_CMD_PARAM_SET, | |
ef6243ac | 7217 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
e3b7ca18 | 7218 | .doit = devlink_nl_cmd_param_set_doit, |
e3b7ca18 | 7219 | .flags = GENL_ADMIN_PERM, |
e3b7ca18 | 7220 | }, |
f4601dee VV |
7221 | { |
7222 | .cmd = DEVLINK_CMD_PORT_PARAM_GET, | |
ef6243ac | 7223 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f4601dee VV |
7224 | .doit = devlink_nl_cmd_port_param_get_doit, |
7225 | .dumpit = devlink_nl_cmd_port_param_get_dumpit, | |
f4601dee VV |
7226 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
7227 | /* can be retrieved by unprivileged users */ | |
7228 | }, | |
9c54873b VV |
7229 | { |
7230 | .cmd = DEVLINK_CMD_PORT_PARAM_SET, | |
ef6243ac | 7231 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9c54873b | 7232 | .doit = devlink_nl_cmd_port_param_set_doit, |
9c54873b VV |
7233 | .flags = GENL_ADMIN_PERM, |
7234 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, | |
7235 | }, | |
d8db7ea5 AV |
7236 | { |
7237 | .cmd = DEVLINK_CMD_REGION_GET, | |
ef6243ac | 7238 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d8db7ea5 AV |
7239 | .doit = devlink_nl_cmd_region_get_doit, |
7240 | .dumpit = devlink_nl_cmd_region_get_dumpit, | |
d8db7ea5 | 7241 | .flags = GENL_ADMIN_PERM, |
d8db7ea5 | 7242 | }, |
b9a17abf JK |
7243 | { |
7244 | .cmd = DEVLINK_CMD_REGION_NEW, | |
7245 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
7246 | .doit = devlink_nl_cmd_region_new, | |
7247 | .flags = GENL_ADMIN_PERM, | |
b9a17abf | 7248 | }, |
866319bb AV |
7249 | { |
7250 | .cmd = DEVLINK_CMD_REGION_DEL, | |
ef6243ac | 7251 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
866319bb | 7252 | .doit = devlink_nl_cmd_region_del, |
866319bb | 7253 | .flags = GENL_ADMIN_PERM, |
866319bb | 7254 | }, |
4e54795a AV |
7255 | { |
7256 | .cmd = DEVLINK_CMD_REGION_READ, | |
ee85da53 JP |
7257 | .validate = GENL_DONT_VALIDATE_STRICT | |
7258 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
4e54795a | 7259 | .dumpit = devlink_nl_cmd_region_read_dumpit, |
4e54795a | 7260 | .flags = GENL_ADMIN_PERM, |
4e54795a | 7261 | }, |
f9cf2288 JK |
7262 | { |
7263 | .cmd = DEVLINK_CMD_INFO_GET, | |
ef6243ac | 7264 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f9cf2288 JK |
7265 | .doit = devlink_nl_cmd_info_get_doit, |
7266 | .dumpit = devlink_nl_cmd_info_get_dumpit, | |
f9cf2288 JK |
7267 | /* can be retrieved by unprivileged users */ |
7268 | }, | |
7afe335a EBE |
7269 | { |
7270 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET, | |
ef6243ac | 7271 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
7afe335a EBE |
7272 | .doit = devlink_nl_cmd_health_reporter_get_doit, |
7273 | .dumpit = devlink_nl_cmd_health_reporter_get_dumpit, | |
f4f54166 | 7274 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7275 | DEVLINK_NL_FLAG_NO_LOCK, |
7afe335a EBE |
7276 | /* can be retrieved by unprivileged users */ |
7277 | }, | |
a1e55ec0 EBE |
7278 | { |
7279 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET, | |
ef6243ac | 7280 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
a1e55ec0 | 7281 | .doit = devlink_nl_cmd_health_reporter_set_doit, |
a1e55ec0 | 7282 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7283 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7284 | DEVLINK_NL_FLAG_NO_LOCK, |
a1e55ec0 | 7285 | }, |
20a0943a EBE |
7286 | { |
7287 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER, | |
ef6243ac | 7288 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
20a0943a | 7289 | .doit = devlink_nl_cmd_health_reporter_recover_doit, |
20a0943a | 7290 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7291 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7292 | DEVLINK_NL_FLAG_NO_LOCK, |
20a0943a | 7293 | }, |
fca42a27 EBE |
7294 | { |
7295 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, | |
ef6243ac | 7296 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
fca42a27 | 7297 | .doit = devlink_nl_cmd_health_reporter_diagnose_doit, |
fca42a27 | 7298 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7299 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7300 | DEVLINK_NL_FLAG_NO_LOCK, |
fca42a27 | 7301 | }, |
35455e23 EBE |
7302 | { |
7303 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, | |
82a843de JP |
7304 | .validate = GENL_DONT_VALIDATE_STRICT | |
7305 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
e44ef4e4 | 7306 | .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit, |
35455e23 | 7307 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7308 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
35455e23 EBE |
7309 | DEVLINK_NL_FLAG_NO_LOCK, |
7310 | }, | |
7311 | { | |
7312 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR, | |
ef6243ac | 7313 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
35455e23 | 7314 | .doit = devlink_nl_cmd_health_reporter_dump_clear_doit, |
35455e23 | 7315 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7316 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
35455e23 EBE |
7317 | DEVLINK_NL_FLAG_NO_LOCK, |
7318 | }, | |
76726ccb JK |
7319 | { |
7320 | .cmd = DEVLINK_CMD_FLASH_UPDATE, | |
ef6243ac | 7321 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
76726ccb | 7322 | .doit = devlink_nl_cmd_flash_update, |
76726ccb | 7323 | .flags = GENL_ADMIN_PERM, |
76726ccb | 7324 | }, |
0f420b6c IS |
7325 | { |
7326 | .cmd = DEVLINK_CMD_TRAP_GET, | |
7327 | .doit = devlink_nl_cmd_trap_get_doit, | |
7328 | .dumpit = devlink_nl_cmd_trap_get_dumpit, | |
0f420b6c IS |
7329 | /* can be retrieved by unprivileged users */ |
7330 | }, | |
7331 | { | |
7332 | .cmd = DEVLINK_CMD_TRAP_SET, | |
7333 | .doit = devlink_nl_cmd_trap_set_doit, | |
7334 | .flags = GENL_ADMIN_PERM, | |
0f420b6c IS |
7335 | }, |
7336 | { | |
7337 | .cmd = DEVLINK_CMD_TRAP_GROUP_GET, | |
7338 | .doit = devlink_nl_cmd_trap_group_get_doit, | |
7339 | .dumpit = devlink_nl_cmd_trap_group_get_dumpit, | |
0f420b6c IS |
7340 | /* can be retrieved by unprivileged users */ |
7341 | }, | |
7342 | { | |
7343 | .cmd = DEVLINK_CMD_TRAP_GROUP_SET, | |
7344 | .doit = devlink_nl_cmd_trap_group_set_doit, | |
7345 | .flags = GENL_ADMIN_PERM, | |
0f420b6c | 7346 | }, |
1e8c6619 IS |
7347 | { |
7348 | .cmd = DEVLINK_CMD_TRAP_POLICER_GET, | |
7349 | .doit = devlink_nl_cmd_trap_policer_get_doit, | |
7350 | .dumpit = devlink_nl_cmd_trap_policer_get_dumpit, | |
1e8c6619 IS |
7351 | /* can be retrieved by unprivileged users */ |
7352 | }, | |
7353 | { | |
7354 | .cmd = DEVLINK_CMD_TRAP_POLICER_SET, | |
7355 | .doit = devlink_nl_cmd_trap_policer_set_doit, | |
7356 | .flags = GENL_ADMIN_PERM, | |
1e8c6619 | 7357 | }, |
bfcd3a46 JP |
7358 | }; |
7359 | ||
56989f6d | 7360 | static struct genl_family devlink_nl_family __ro_after_init = { |
489111e5 JB |
7361 | .name = DEVLINK_GENL_NAME, |
7362 | .version = DEVLINK_GENL_VERSION, | |
7363 | .maxattr = DEVLINK_ATTR_MAX, | |
3b0f31f2 | 7364 | .policy = devlink_nl_policy, |
489111e5 JB |
7365 | .netnsok = true, |
7366 | .pre_doit = devlink_nl_pre_doit, | |
7367 | .post_doit = devlink_nl_post_doit, | |
7368 | .module = THIS_MODULE, | |
7369 | .ops = devlink_nl_ops, | |
7370 | .n_ops = ARRAY_SIZE(devlink_nl_ops), | |
7371 | .mcgrps = devlink_nl_mcgrps, | |
7372 | .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps), | |
7373 | }; | |
7374 | ||
bfcd3a46 JP |
7375 | /** |
7376 | * devlink_alloc - Allocate new devlink instance resources | |
7377 | * | |
7378 | * @ops: ops | |
7379 | * @priv_size: size of user private data | |
7380 | * | |
7381 | * Allocate new devlink instance resources, including devlink index | |
7382 | * and name. | |
7383 | */ | |
7384 | struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) | |
7385 | { | |
7386 | struct devlink *devlink; | |
7387 | ||
be6fe1d8 JK |
7388 | if (WARN_ON(!ops)) |
7389 | return NULL; | |
7390 | ||
bfcd3a46 JP |
7391 | devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL); |
7392 | if (!devlink) | |
7393 | return NULL; | |
7394 | devlink->ops = ops; | |
12102436 | 7395 | xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC); |
8273fd84 | 7396 | __devlink_net_set(devlink, &init_net); |
bfcd3a46 | 7397 | INIT_LIST_HEAD(&devlink->port_list); |
bf797471 | 7398 | INIT_LIST_HEAD(&devlink->sb_list); |
1555d204 | 7399 | INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list); |
d9f9b9a4 | 7400 | INIT_LIST_HEAD(&devlink->resource_list); |
eabaef18 | 7401 | INIT_LIST_HEAD(&devlink->param_list); |
b16ebe92 | 7402 | INIT_LIST_HEAD(&devlink->region_list); |
a0bdcc59 | 7403 | INIT_LIST_HEAD(&devlink->reporter_list); |
0f420b6c IS |
7404 | INIT_LIST_HEAD(&devlink->trap_list); |
7405 | INIT_LIST_HEAD(&devlink->trap_group_list); | |
1e8c6619 | 7406 | INIT_LIST_HEAD(&devlink->trap_policer_list); |
2406e7e5 | 7407 | mutex_init(&devlink->lock); |
b587bdaf | 7408 | mutex_init(&devlink->reporters_lock); |
bfcd3a46 JP |
7409 | return devlink; |
7410 | } | |
7411 | EXPORT_SYMBOL_GPL(devlink_alloc); | |
7412 | ||
7413 | /** | |
7414 | * devlink_register - Register devlink instance | |
7415 | * | |
7416 | * @devlink: devlink | |
eeaadd82 | 7417 | * @dev: parent device |
bfcd3a46 JP |
7418 | */ |
7419 | int devlink_register(struct devlink *devlink, struct device *dev) | |
7420 | { | |
bfcd3a46 | 7421 | devlink->dev = dev; |
8273fd84 | 7422 | devlink->registered = true; |
6553e561 | 7423 | mutex_lock(&devlink_mutex); |
bfcd3a46 JP |
7424 | list_add_tail(&devlink->list, &devlink_list); |
7425 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
7426 | mutex_unlock(&devlink_mutex); | |
7427 | return 0; | |
7428 | } | |
7429 | EXPORT_SYMBOL_GPL(devlink_register); | |
7430 | ||
7431 | /** | |
7432 | * devlink_unregister - Unregister devlink instance | |
7433 | * | |
7434 | * @devlink: devlink | |
7435 | */ | |
7436 | void devlink_unregister(struct devlink *devlink) | |
7437 | { | |
7438 | mutex_lock(&devlink_mutex); | |
a0c76345 JP |
7439 | WARN_ON(devlink_reload_supported(devlink) && |
7440 | devlink->reload_enabled); | |
bfcd3a46 JP |
7441 | devlink_notify(devlink, DEVLINK_CMD_DEL); |
7442 | list_del(&devlink->list); | |
7443 | mutex_unlock(&devlink_mutex); | |
7444 | } | |
7445 | EXPORT_SYMBOL_GPL(devlink_unregister); | |
7446 | ||
a0c76345 JP |
7447 | /** |
7448 | * devlink_reload_enable - Enable reload of devlink instance | |
7449 | * | |
7450 | * @devlink: devlink | |
7451 | * | |
7452 | * Should be called at end of device initialization | |
7453 | * process when reload operation is supported. | |
7454 | */ | |
7455 | void devlink_reload_enable(struct devlink *devlink) | |
7456 | { | |
7457 | mutex_lock(&devlink_mutex); | |
7458 | devlink->reload_enabled = true; | |
7459 | mutex_unlock(&devlink_mutex); | |
7460 | } | |
7461 | EXPORT_SYMBOL_GPL(devlink_reload_enable); | |
7462 | ||
7463 | /** | |
7464 | * devlink_reload_disable - Disable reload of devlink instance | |
7465 | * | |
7466 | * @devlink: devlink | |
7467 | * | |
7468 | * Should be called at the beginning of device cleanup | |
7469 | * process when reload operation is supported. | |
7470 | */ | |
7471 | void devlink_reload_disable(struct devlink *devlink) | |
7472 | { | |
7473 | mutex_lock(&devlink_mutex); | |
7474 | /* Mutex is taken which ensures that no reload operation is in | |
7475 | * progress while setting up forbidded flag. | |
7476 | */ | |
7477 | devlink->reload_enabled = false; | |
7478 | mutex_unlock(&devlink_mutex); | |
7479 | } | |
7480 | EXPORT_SYMBOL_GPL(devlink_reload_disable); | |
7481 | ||
bfcd3a46 JP |
7482 | /** |
7483 | * devlink_free - Free devlink instance resources | |
7484 | * | |
7485 | * @devlink: devlink | |
7486 | */ | |
7487 | void devlink_free(struct devlink *devlink) | |
7488 | { | |
b587bdaf | 7489 | mutex_destroy(&devlink->reporters_lock); |
375cf8c6 | 7490 | mutex_destroy(&devlink->lock); |
1e8c6619 | 7491 | WARN_ON(!list_empty(&devlink->trap_policer_list)); |
0f420b6c IS |
7492 | WARN_ON(!list_empty(&devlink->trap_group_list)); |
7493 | WARN_ON(!list_empty(&devlink->trap_list)); | |
b904aada PP |
7494 | WARN_ON(!list_empty(&devlink->reporter_list)); |
7495 | WARN_ON(!list_empty(&devlink->region_list)); | |
7496 | WARN_ON(!list_empty(&devlink->param_list)); | |
7497 | WARN_ON(!list_empty(&devlink->resource_list)); | |
7498 | WARN_ON(!list_empty(&devlink->dpipe_table_list)); | |
7499 | WARN_ON(!list_empty(&devlink->sb_list)); | |
7500 | WARN_ON(!list_empty(&devlink->port_list)); | |
7501 | ||
12102436 JK |
7502 | xa_destroy(&devlink->snapshot_ids); |
7503 | ||
bfcd3a46 JP |
7504 | kfree(devlink); |
7505 | } | |
7506 | EXPORT_SYMBOL_GPL(devlink_free); | |
7507 | ||
136bf27f JP |
7508 | static void devlink_port_type_warn(struct work_struct *work) |
7509 | { | |
7510 | WARN(true, "Type was not set for devlink port."); | |
7511 | } | |
7512 | ||
7513 | static bool devlink_port_type_should_warn(struct devlink_port *devlink_port) | |
7514 | { | |
7515 | /* Ignore CPU and DSA flavours. */ | |
7516 | return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU && | |
7517 | devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA; | |
7518 | } | |
7519 | ||
4c582234 | 7520 | #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600) |
136bf27f JP |
7521 | |
7522 | static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port) | |
7523 | { | |
7524 | if (!devlink_port_type_should_warn(devlink_port)) | |
7525 | return; | |
7526 | /* Schedule a work to WARN in case driver does not set port | |
7527 | * type within timeout. | |
7528 | */ | |
7529 | schedule_delayed_work(&devlink_port->type_warn_dw, | |
7530 | DEVLINK_PORT_TYPE_WARN_TIMEOUT); | |
7531 | } | |
7532 | ||
7533 | static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port) | |
7534 | { | |
7535 | if (!devlink_port_type_should_warn(devlink_port)) | |
7536 | return; | |
7537 | cancel_delayed_work_sync(&devlink_port->type_warn_dw); | |
7538 | } | |
7539 | ||
bfcd3a46 JP |
7540 | /** |
7541 | * devlink_port_register - Register devlink port | |
7542 | * | |
7543 | * @devlink: devlink | |
7544 | * @devlink_port: devlink port | |
eeaadd82 | 7545 | * @port_index: driver-specific numerical identifier of the port |
bfcd3a46 JP |
7546 | * |
7547 | * Register devlink port with provided port index. User can use | |
7548 | * any indexing, even hw-related one. devlink_port structure | |
7549 | * is convenient to be embedded inside user driver private structure. | |
7550 | * Note that the caller should take care of zeroing the devlink_port | |
7551 | * structure. | |
7552 | */ | |
7553 | int devlink_port_register(struct devlink *devlink, | |
7554 | struct devlink_port *devlink_port, | |
7555 | unsigned int port_index) | |
7556 | { | |
2406e7e5 | 7557 | mutex_lock(&devlink->lock); |
bfcd3a46 | 7558 | if (devlink_port_index_exists(devlink, port_index)) { |
2406e7e5 | 7559 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
7560 | return -EEXIST; |
7561 | } | |
7562 | devlink_port->devlink = devlink; | |
7563 | devlink_port->index = port_index; | |
bfcd3a46 | 7564 | devlink_port->registered = true; |
b8f97554 | 7565 | spin_lock_init(&devlink_port->type_lock); |
79604c5d PP |
7566 | INIT_LIST_HEAD(&devlink_port->reporter_list); |
7567 | mutex_init(&devlink_port->reporters_lock); | |
bfcd3a46 | 7568 | list_add_tail(&devlink_port->list, &devlink->port_list); |
39e6160e | 7569 | INIT_LIST_HEAD(&devlink_port->param_list); |
2406e7e5 | 7570 | mutex_unlock(&devlink->lock); |
136bf27f JP |
7571 | INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn); |
7572 | devlink_port_type_warn_schedule(devlink_port); | |
bfcd3a46 JP |
7573 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
7574 | return 0; | |
7575 | } | |
7576 | EXPORT_SYMBOL_GPL(devlink_port_register); | |
7577 | ||
7578 | /** | |
7579 | * devlink_port_unregister - Unregister devlink port | |
7580 | * | |
7581 | * @devlink_port: devlink port | |
7582 | */ | |
7583 | void devlink_port_unregister(struct devlink_port *devlink_port) | |
7584 | { | |
2406e7e5 AS |
7585 | struct devlink *devlink = devlink_port->devlink; |
7586 | ||
136bf27f | 7587 | devlink_port_type_warn_cancel(devlink_port); |
bfcd3a46 | 7588 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL); |
2406e7e5 | 7589 | mutex_lock(&devlink->lock); |
bfcd3a46 | 7590 | list_del(&devlink_port->list); |
2406e7e5 | 7591 | mutex_unlock(&devlink->lock); |
79604c5d PP |
7592 | WARN_ON(!list_empty(&devlink_port->reporter_list)); |
7593 | mutex_destroy(&devlink_port->reporters_lock); | |
bfcd3a46 JP |
7594 | } |
7595 | EXPORT_SYMBOL_GPL(devlink_port_unregister); | |
7596 | ||
7597 | static void __devlink_port_type_set(struct devlink_port *devlink_port, | |
7598 | enum devlink_port_type type, | |
7599 | void *type_dev) | |
7600 | { | |
2b239e70 JP |
7601 | if (WARN_ON(!devlink_port->registered)) |
7602 | return; | |
136bf27f | 7603 | devlink_port_type_warn_cancel(devlink_port); |
0f420b6c | 7604 | spin_lock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
7605 | devlink_port->type = type; |
7606 | devlink_port->type_dev = type_dev; | |
0f420b6c | 7607 | spin_unlock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
7608 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
7609 | } | |
7610 | ||
7611 | /** | |
7612 | * devlink_port_type_eth_set - Set port type to Ethernet | |
7613 | * | |
7614 | * @devlink_port: devlink port | |
7615 | * @netdev: related netdevice | |
7616 | */ | |
7617 | void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
7618 | struct net_device *netdev) | |
7619 | { | |
119c0b57 JP |
7620 | const struct net_device_ops *ops = netdev->netdev_ops; |
7621 | ||
746364f2 JP |
7622 | /* If driver registers devlink port, it should set devlink port |
7623 | * attributes accordingly so the compat functions are called | |
7624 | * and the original ops are not used. | |
7625 | */ | |
119c0b57 | 7626 | if (ops->ndo_get_phys_port_name) { |
746364f2 JP |
7627 | /* Some drivers use the same set of ndos for netdevs |
7628 | * that have devlink_port registered and also for | |
7629 | * those who don't. Make sure that ndo_get_phys_port_name | |
7630 | * returns -EOPNOTSUPP here in case it is defined. | |
7631 | * Warn if not. | |
7632 | */ | |
746364f2 JP |
7633 | char name[IFNAMSIZ]; |
7634 | int err; | |
7635 | ||
7636 | err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name)); | |
7637 | WARN_ON(err != -EOPNOTSUPP); | |
7638 | } | |
119c0b57 JP |
7639 | if (ops->ndo_get_port_parent_id) { |
7640 | /* Some drivers use the same set of ndos for netdevs | |
7641 | * that have devlink_port registered and also for | |
7642 | * those who don't. Make sure that ndo_get_port_parent_id | |
7643 | * returns -EOPNOTSUPP here in case it is defined. | |
7644 | * Warn if not. | |
7645 | */ | |
7646 | struct netdev_phys_item_id ppid; | |
7647 | int err; | |
7648 | ||
7649 | err = ops->ndo_get_port_parent_id(netdev, &ppid); | |
7650 | WARN_ON(err != -EOPNOTSUPP); | |
7651 | } | |
773b1f38 | 7652 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev); |
bfcd3a46 JP |
7653 | } |
7654 | EXPORT_SYMBOL_GPL(devlink_port_type_eth_set); | |
7655 | ||
7656 | /** | |
7657 | * devlink_port_type_ib_set - Set port type to InfiniBand | |
7658 | * | |
7659 | * @devlink_port: devlink port | |
7660 | * @ibdev: related IB device | |
7661 | */ | |
7662 | void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
7663 | struct ib_device *ibdev) | |
7664 | { | |
773b1f38 | 7665 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev); |
bfcd3a46 JP |
7666 | } |
7667 | EXPORT_SYMBOL_GPL(devlink_port_type_ib_set); | |
7668 | ||
7669 | /** | |
7670 | * devlink_port_type_clear - Clear port type | |
7671 | * | |
7672 | * @devlink_port: devlink port | |
7673 | */ | |
7674 | void devlink_port_type_clear(struct devlink_port *devlink_port) | |
7675 | { | |
773b1f38 | 7676 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL); |
136bf27f | 7677 | devlink_port_type_warn_schedule(devlink_port); |
bfcd3a46 JP |
7678 | } |
7679 | EXPORT_SYMBOL_GPL(devlink_port_type_clear); | |
7680 | ||
378ef01b | 7681 | static int __devlink_port_attrs_set(struct devlink_port *devlink_port, |
71ad8d55 | 7682 | enum devlink_port_flavour flavour) |
378ef01b PP |
7683 | { |
7684 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7685 | ||
7686 | if (WARN_ON(devlink_port->registered)) | |
7687 | return -EEXIST; | |
10a429ba | 7688 | devlink_port->attrs_set = true; |
378ef01b | 7689 | attrs->flavour = flavour; |
71ad8d55 | 7690 | if (attrs->switch_id.id_len) { |
46737a19 | 7691 | devlink_port->switch_port = true; |
71ad8d55 DR |
7692 | if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN)) |
7693 | attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN; | |
378ef01b | 7694 | } else { |
46737a19 | 7695 | devlink_port->switch_port = false; |
378ef01b PP |
7696 | } |
7697 | return 0; | |
7698 | } | |
7699 | ||
bfcd3a46 | 7700 | /** |
b9ffcbaf | 7701 | * devlink_port_attrs_set - Set port attributes |
bfcd3a46 JP |
7702 | * |
7703 | * @devlink_port: devlink port | |
71ad8d55 | 7704 | * @attrs: devlink port attrs |
bfcd3a46 | 7705 | */ |
b9ffcbaf | 7706 | void devlink_port_attrs_set(struct devlink_port *devlink_port, |
71ad8d55 | 7707 | struct devlink_port_attrs *attrs) |
bfcd3a46 | 7708 | { |
378ef01b | 7709 | int ret; |
b9ffcbaf | 7710 | |
71ad8d55 DR |
7711 | devlink_port->attrs = *attrs; |
7712 | ret = __devlink_port_attrs_set(devlink_port, attrs->flavour); | |
378ef01b | 7713 | if (ret) |
45b86112 | 7714 | return; |
a0f49b54 | 7715 | WARN_ON(attrs->splittable && attrs->split); |
bfcd3a46 | 7716 | } |
b9ffcbaf | 7717 | EXPORT_SYMBOL_GPL(devlink_port_attrs_set); |
bfcd3a46 | 7718 | |
98fd2d65 PP |
7719 | /** |
7720 | * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes | |
7721 | * | |
7722 | * @devlink_port: devlink port | |
3a2d9588 | 7723 | * @controller: associated controller number for the devlink port instance |
98fd2d65 | 7724 | * @pf: associated PF for the devlink port instance |
05b595e9 | 7725 | * @external: indicates if the port is for an external controller |
98fd2d65 | 7726 | */ |
3a2d9588 PP |
7727 | void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller, |
7728 | u16 pf, bool external) | |
98fd2d65 PP |
7729 | { |
7730 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7731 | int ret; | |
7732 | ||
7733 | ret = __devlink_port_attrs_set(devlink_port, | |
71ad8d55 | 7734 | DEVLINK_PORT_FLAVOUR_PCI_PF); |
98fd2d65 PP |
7735 | if (ret) |
7736 | return; | |
3a2d9588 | 7737 | attrs->pci_pf.controller = controller; |
98fd2d65 | 7738 | attrs->pci_pf.pf = pf; |
05b595e9 | 7739 | attrs->pci_pf.external = external; |
98fd2d65 PP |
7740 | } |
7741 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set); | |
7742 | ||
e41b6bf3 PP |
7743 | /** |
7744 | * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes | |
7745 | * | |
7746 | * @devlink_port: devlink port | |
3a2d9588 | 7747 | * @controller: associated controller number for the devlink port instance |
e41b6bf3 PP |
7748 | * @pf: associated PF for the devlink port instance |
7749 | * @vf: associated VF of a PF for the devlink port instance | |
05b595e9 | 7750 | * @external: indicates if the port is for an external controller |
e41b6bf3 | 7751 | */ |
3a2d9588 | 7752 | void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller, |
05b595e9 | 7753 | u16 pf, u16 vf, bool external) |
e41b6bf3 PP |
7754 | { |
7755 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7756 | int ret; | |
7757 | ||
7758 | ret = __devlink_port_attrs_set(devlink_port, | |
71ad8d55 | 7759 | DEVLINK_PORT_FLAVOUR_PCI_VF); |
e41b6bf3 PP |
7760 | if (ret) |
7761 | return; | |
3a2d9588 | 7762 | attrs->pci_vf.controller = controller; |
e41b6bf3 PP |
7763 | attrs->pci_vf.pf = pf; |
7764 | attrs->pci_vf.vf = vf; | |
05b595e9 | 7765 | attrs->pci_vf.external = external; |
e41b6bf3 PP |
7766 | } |
7767 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set); | |
7768 | ||
af3836df JP |
7769 | static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port, |
7770 | char *name, size_t len) | |
08474c1a JP |
7771 | { |
7772 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7773 | int n = 0; | |
7774 | ||
10a429ba | 7775 | if (!devlink_port->attrs_set) |
08474c1a JP |
7776 | return -EOPNOTSUPP; |
7777 | ||
7778 | switch (attrs->flavour) { | |
7779 | case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
acf1ee44 | 7780 | case DEVLINK_PORT_FLAVOUR_VIRTUAL: |
08474c1a | 7781 | if (!attrs->split) |
378ef01b | 7782 | n = snprintf(name, len, "p%u", attrs->phys.port_number); |
08474c1a | 7783 | else |
378ef01b PP |
7784 | n = snprintf(name, len, "p%us%u", |
7785 | attrs->phys.port_number, | |
7786 | attrs->phys.split_subport_number); | |
08474c1a JP |
7787 | break; |
7788 | case DEVLINK_PORT_FLAVOUR_CPU: | |
7789 | case DEVLINK_PORT_FLAVOUR_DSA: | |
7790 | /* As CPU and DSA ports do not have a netdevice associated | |
7791 | * case should not ever happen. | |
7792 | */ | |
7793 | WARN_ON(1); | |
7794 | return -EINVAL; | |
98fd2d65 PP |
7795 | case DEVLINK_PORT_FLAVOUR_PCI_PF: |
7796 | n = snprintf(name, len, "pf%u", attrs->pci_pf.pf); | |
7797 | break; | |
e41b6bf3 PP |
7798 | case DEVLINK_PORT_FLAVOUR_PCI_VF: |
7799 | n = snprintf(name, len, "pf%uvf%u", | |
7800 | attrs->pci_vf.pf, attrs->pci_vf.vf); | |
7801 | break; | |
08474c1a JP |
7802 | } |
7803 | ||
7804 | if (n >= len) | |
7805 | return -EINVAL; | |
7806 | ||
7807 | return 0; | |
7808 | } | |
af3836df | 7809 | |
bf797471 JP |
7810 | int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, |
7811 | u32 size, u16 ingress_pools_count, | |
7812 | u16 egress_pools_count, u16 ingress_tc_count, | |
7813 | u16 egress_tc_count) | |
7814 | { | |
7815 | struct devlink_sb *devlink_sb; | |
7816 | int err = 0; | |
7817 | ||
2406e7e5 | 7818 | mutex_lock(&devlink->lock); |
bf797471 JP |
7819 | if (devlink_sb_index_exists(devlink, sb_index)) { |
7820 | err = -EEXIST; | |
7821 | goto unlock; | |
7822 | } | |
7823 | ||
7824 | devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL); | |
7825 | if (!devlink_sb) { | |
7826 | err = -ENOMEM; | |
7827 | goto unlock; | |
7828 | } | |
7829 | devlink_sb->index = sb_index; | |
7830 | devlink_sb->size = size; | |
7831 | devlink_sb->ingress_pools_count = ingress_pools_count; | |
7832 | devlink_sb->egress_pools_count = egress_pools_count; | |
7833 | devlink_sb->ingress_tc_count = ingress_tc_count; | |
7834 | devlink_sb->egress_tc_count = egress_tc_count; | |
7835 | list_add_tail(&devlink_sb->list, &devlink->sb_list); | |
7836 | unlock: | |
2406e7e5 | 7837 | mutex_unlock(&devlink->lock); |
bf797471 JP |
7838 | return err; |
7839 | } | |
7840 | EXPORT_SYMBOL_GPL(devlink_sb_register); | |
7841 | ||
7842 | void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index) | |
7843 | { | |
7844 | struct devlink_sb *devlink_sb; | |
7845 | ||
2406e7e5 | 7846 | mutex_lock(&devlink->lock); |
bf797471 JP |
7847 | devlink_sb = devlink_sb_get_by_index(devlink, sb_index); |
7848 | WARN_ON(!devlink_sb); | |
7849 | list_del(&devlink_sb->list); | |
2406e7e5 | 7850 | mutex_unlock(&devlink->lock); |
bf797471 JP |
7851 | kfree(devlink_sb); |
7852 | } | |
7853 | EXPORT_SYMBOL_GPL(devlink_sb_unregister); | |
7854 | ||
1555d204 AS |
7855 | /** |
7856 | * devlink_dpipe_headers_register - register dpipe headers | |
7857 | * | |
7858 | * @devlink: devlink | |
7859 | * @dpipe_headers: dpipe header array | |
7860 | * | |
7861 | * Register the headers supported by hardware. | |
7862 | */ | |
7863 | int devlink_dpipe_headers_register(struct devlink *devlink, | |
7864 | struct devlink_dpipe_headers *dpipe_headers) | |
7865 | { | |
2406e7e5 | 7866 | mutex_lock(&devlink->lock); |
1555d204 | 7867 | devlink->dpipe_headers = dpipe_headers; |
2406e7e5 | 7868 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7869 | return 0; |
7870 | } | |
7871 | EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register); | |
7872 | ||
7873 | /** | |
7874 | * devlink_dpipe_headers_unregister - unregister dpipe headers | |
7875 | * | |
7876 | * @devlink: devlink | |
7877 | * | |
7878 | * Unregister the headers supported by hardware. | |
7879 | */ | |
7880 | void devlink_dpipe_headers_unregister(struct devlink *devlink) | |
7881 | { | |
2406e7e5 | 7882 | mutex_lock(&devlink->lock); |
1555d204 | 7883 | devlink->dpipe_headers = NULL; |
2406e7e5 | 7884 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7885 | } |
7886 | EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister); | |
7887 | ||
7888 | /** | |
7889 | * devlink_dpipe_table_counter_enabled - check if counter allocation | |
7890 | * required | |
7891 | * @devlink: devlink | |
7892 | * @table_name: tables name | |
7893 | * | |
7894 | * Used by driver to check if counter allocation is required. | |
7895 | * After counter allocation is turned on the table entries | |
7896 | * are updated to include counter statistics. | |
7897 | * | |
7898 | * After that point on the driver must respect the counter | |
7899 | * state so that each entry added to the table is added | |
7900 | * with a counter. | |
7901 | */ | |
7902 | bool devlink_dpipe_table_counter_enabled(struct devlink *devlink, | |
7903 | const char *table_name) | |
7904 | { | |
7905 | struct devlink_dpipe_table *table; | |
7906 | bool enabled; | |
7907 | ||
7908 | rcu_read_lock(); | |
7909 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 7910 | table_name, devlink); |
1555d204 AS |
7911 | enabled = false; |
7912 | if (table) | |
7913 | enabled = table->counters_enabled; | |
7914 | rcu_read_unlock(); | |
7915 | return enabled; | |
7916 | } | |
7917 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled); | |
7918 | ||
7919 | /** | |
7920 | * devlink_dpipe_table_register - register dpipe table | |
7921 | * | |
7922 | * @devlink: devlink | |
7923 | * @table_name: table name | |
7924 | * @table_ops: table ops | |
7925 | * @priv: priv | |
1555d204 AS |
7926 | * @counter_control_extern: external control for counters |
7927 | */ | |
7928 | int devlink_dpipe_table_register(struct devlink *devlink, | |
7929 | const char *table_name, | |
7930 | struct devlink_dpipe_table_ops *table_ops, | |
ffd3cdcc | 7931 | void *priv, bool counter_control_extern) |
1555d204 AS |
7932 | { |
7933 | struct devlink_dpipe_table *table; | |
6132c1d9 | 7934 | int err = 0; |
1555d204 | 7935 | |
ffd3cdcc AS |
7936 | if (WARN_ON(!table_ops->size_get)) |
7937 | return -EINVAL; | |
7938 | ||
6132c1d9 MB |
7939 | mutex_lock(&devlink->lock); |
7940 | ||
2eb51c75 MB |
7941 | if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name, |
7942 | devlink)) { | |
6132c1d9 MB |
7943 | err = -EEXIST; |
7944 | goto unlock; | |
7945 | } | |
7946 | ||
1555d204 | 7947 | table = kzalloc(sizeof(*table), GFP_KERNEL); |
6132c1d9 MB |
7948 | if (!table) { |
7949 | err = -ENOMEM; | |
7950 | goto unlock; | |
7951 | } | |
1555d204 AS |
7952 | |
7953 | table->name = table_name; | |
7954 | table->table_ops = table_ops; | |
7955 | table->priv = priv; | |
1555d204 AS |
7956 | table->counter_control_extern = counter_control_extern; |
7957 | ||
1555d204 | 7958 | list_add_tail_rcu(&table->list, &devlink->dpipe_table_list); |
6132c1d9 | 7959 | unlock: |
2406e7e5 | 7960 | mutex_unlock(&devlink->lock); |
6132c1d9 | 7961 | return err; |
1555d204 AS |
7962 | } |
7963 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_register); | |
7964 | ||
7965 | /** | |
7966 | * devlink_dpipe_table_unregister - unregister dpipe table | |
7967 | * | |
7968 | * @devlink: devlink | |
7969 | * @table_name: table name | |
7970 | */ | |
7971 | void devlink_dpipe_table_unregister(struct devlink *devlink, | |
7972 | const char *table_name) | |
7973 | { | |
7974 | struct devlink_dpipe_table *table; | |
7975 | ||
2406e7e5 | 7976 | mutex_lock(&devlink->lock); |
1555d204 | 7977 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, |
2eb51c75 | 7978 | table_name, devlink); |
1555d204 AS |
7979 | if (!table) |
7980 | goto unlock; | |
7981 | list_del_rcu(&table->list); | |
2406e7e5 | 7982 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7983 | kfree_rcu(table, rcu); |
7984 | return; | |
7985 | unlock: | |
2406e7e5 | 7986 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7987 | } |
7988 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister); | |
7989 | ||
d9f9b9a4 AS |
7990 | /** |
7991 | * devlink_resource_register - devlink resource register | |
7992 | * | |
7993 | * @devlink: devlink | |
7994 | * @resource_name: resource's name | |
d9f9b9a4 AS |
7995 | * @resource_size: resource's size |
7996 | * @resource_id: resource's id | |
eeaadd82 JK |
7997 | * @parent_resource_id: resource's parent id |
7998 | * @size_params: size parameters | |
d9f9b9a4 AS |
7999 | */ |
8000 | int devlink_resource_register(struct devlink *devlink, | |
8001 | const char *resource_name, | |
d9f9b9a4 AS |
8002 | u64 resource_size, |
8003 | u64 resource_id, | |
8004 | u64 parent_resource_id, | |
fc56be47 | 8005 | const struct devlink_resource_size_params *size_params) |
d9f9b9a4 AS |
8006 | { |
8007 | struct devlink_resource *resource; | |
8008 | struct list_head *resource_list; | |
14530746 | 8009 | bool top_hierarchy; |
d9f9b9a4 AS |
8010 | int err = 0; |
8011 | ||
14530746 DA |
8012 | top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP; |
8013 | ||
d9f9b9a4 AS |
8014 | mutex_lock(&devlink->lock); |
8015 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8016 | if (resource) { | |
8017 | err = -EINVAL; | |
8018 | goto out; | |
8019 | } | |
8020 | ||
8021 | resource = kzalloc(sizeof(*resource), GFP_KERNEL); | |
8022 | if (!resource) { | |
8023 | err = -ENOMEM; | |
8024 | goto out; | |
8025 | } | |
8026 | ||
8027 | if (top_hierarchy) { | |
8028 | resource_list = &devlink->resource_list; | |
8029 | } else { | |
8030 | struct devlink_resource *parent_resource; | |
8031 | ||
8032 | parent_resource = devlink_resource_find(devlink, NULL, | |
8033 | parent_resource_id); | |
8034 | if (parent_resource) { | |
8035 | resource_list = &parent_resource->resource_list; | |
8036 | resource->parent = parent_resource; | |
8037 | } else { | |
b75703de | 8038 | kfree(resource); |
d9f9b9a4 AS |
8039 | err = -EINVAL; |
8040 | goto out; | |
8041 | } | |
8042 | } | |
8043 | ||
8044 | resource->name = resource_name; | |
8045 | resource->size = resource_size; | |
8046 | resource->size_new = resource_size; | |
8047 | resource->id = resource_id; | |
d9f9b9a4 | 8048 | resource->size_valid = true; |
77d27096 JP |
8049 | memcpy(&resource->size_params, size_params, |
8050 | sizeof(resource->size_params)); | |
d9f9b9a4 AS |
8051 | INIT_LIST_HEAD(&resource->resource_list); |
8052 | list_add_tail(&resource->list, resource_list); | |
8053 | out: | |
8054 | mutex_unlock(&devlink->lock); | |
8055 | return err; | |
8056 | } | |
8057 | EXPORT_SYMBOL_GPL(devlink_resource_register); | |
8058 | ||
8059 | /** | |
8060 | * devlink_resources_unregister - free all resources | |
8061 | * | |
8062 | * @devlink: devlink | |
8063 | * @resource: resource | |
8064 | */ | |
8065 | void devlink_resources_unregister(struct devlink *devlink, | |
8066 | struct devlink_resource *resource) | |
8067 | { | |
8068 | struct devlink_resource *tmp, *child_resource; | |
8069 | struct list_head *resource_list; | |
8070 | ||
8071 | if (resource) | |
8072 | resource_list = &resource->resource_list; | |
8073 | else | |
8074 | resource_list = &devlink->resource_list; | |
8075 | ||
8076 | if (!resource) | |
8077 | mutex_lock(&devlink->lock); | |
8078 | ||
8079 | list_for_each_entry_safe(child_resource, tmp, resource_list, list) { | |
8080 | devlink_resources_unregister(devlink, child_resource); | |
8081 | list_del(&child_resource->list); | |
8082 | kfree(child_resource); | |
8083 | } | |
8084 | ||
8085 | if (!resource) | |
8086 | mutex_unlock(&devlink->lock); | |
8087 | } | |
8088 | EXPORT_SYMBOL_GPL(devlink_resources_unregister); | |
8089 | ||
8090 | /** | |
8091 | * devlink_resource_size_get - get and update size | |
8092 | * | |
8093 | * @devlink: devlink | |
8094 | * @resource_id: the requested resource id | |
8095 | * @p_resource_size: ptr to update | |
8096 | */ | |
8097 | int devlink_resource_size_get(struct devlink *devlink, | |
8098 | u64 resource_id, | |
8099 | u64 *p_resource_size) | |
8100 | { | |
8101 | struct devlink_resource *resource; | |
8102 | int err = 0; | |
8103 | ||
8104 | mutex_lock(&devlink->lock); | |
8105 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8106 | if (!resource) { | |
8107 | err = -EINVAL; | |
8108 | goto out; | |
8109 | } | |
8110 | *p_resource_size = resource->size_new; | |
8111 | resource->size = resource->size_new; | |
8112 | out: | |
8113 | mutex_unlock(&devlink->lock); | |
8114 | return err; | |
8115 | } | |
8116 | EXPORT_SYMBOL_GPL(devlink_resource_size_get); | |
8117 | ||
56dc7cd0 AS |
8118 | /** |
8119 | * devlink_dpipe_table_resource_set - set the resource id | |
8120 | * | |
8121 | * @devlink: devlink | |
8122 | * @table_name: table name | |
8123 | * @resource_id: resource id | |
8124 | * @resource_units: number of resource's units consumed per table's entry | |
8125 | */ | |
8126 | int devlink_dpipe_table_resource_set(struct devlink *devlink, | |
8127 | const char *table_name, u64 resource_id, | |
8128 | u64 resource_units) | |
8129 | { | |
8130 | struct devlink_dpipe_table *table; | |
8131 | int err = 0; | |
8132 | ||
8133 | mutex_lock(&devlink->lock); | |
8134 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 8135 | table_name, devlink); |
56dc7cd0 AS |
8136 | if (!table) { |
8137 | err = -EINVAL; | |
8138 | goto out; | |
8139 | } | |
8140 | table->resource_id = resource_id; | |
8141 | table->resource_units = resource_units; | |
8142 | table->resource_valid = true; | |
8143 | out: | |
8144 | mutex_unlock(&devlink->lock); | |
8145 | return err; | |
8146 | } | |
8147 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set); | |
8148 | ||
fc56be47 JP |
8149 | /** |
8150 | * devlink_resource_occ_get_register - register occupancy getter | |
8151 | * | |
8152 | * @devlink: devlink | |
8153 | * @resource_id: resource id | |
8154 | * @occ_get: occupancy getter callback | |
8155 | * @occ_get_priv: occupancy getter callback priv | |
8156 | */ | |
8157 | void devlink_resource_occ_get_register(struct devlink *devlink, | |
8158 | u64 resource_id, | |
8159 | devlink_resource_occ_get_t *occ_get, | |
8160 | void *occ_get_priv) | |
8161 | { | |
8162 | struct devlink_resource *resource; | |
8163 | ||
8164 | mutex_lock(&devlink->lock); | |
8165 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8166 | if (WARN_ON(!resource)) | |
8167 | goto out; | |
8168 | WARN_ON(resource->occ_get); | |
8169 | ||
8170 | resource->occ_get = occ_get; | |
8171 | resource->occ_get_priv = occ_get_priv; | |
8172 | out: | |
8173 | mutex_unlock(&devlink->lock); | |
8174 | } | |
8175 | EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register); | |
8176 | ||
8177 | /** | |
8178 | * devlink_resource_occ_get_unregister - unregister occupancy getter | |
8179 | * | |
8180 | * @devlink: devlink | |
8181 | * @resource_id: resource id | |
8182 | */ | |
8183 | void devlink_resource_occ_get_unregister(struct devlink *devlink, | |
8184 | u64 resource_id) | |
8185 | { | |
8186 | struct devlink_resource *resource; | |
8187 | ||
8188 | mutex_lock(&devlink->lock); | |
8189 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8190 | if (WARN_ON(!resource)) | |
8191 | goto out; | |
8192 | WARN_ON(!resource->occ_get); | |
8193 | ||
8194 | resource->occ_get = NULL; | |
8195 | resource->occ_get_priv = NULL; | |
8196 | out: | |
8197 | mutex_unlock(&devlink->lock); | |
8198 | } | |
8199 | EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister); | |
8200 | ||
39e6160e VV |
8201 | static int devlink_param_verify(const struct devlink_param *param) |
8202 | { | |
8203 | if (!param || !param->name || !param->supported_cmodes) | |
8204 | return -EINVAL; | |
8205 | if (param->generic) | |
8206 | return devlink_param_generic_verify(param); | |
8207 | else | |
8208 | return devlink_param_driver_verify(param); | |
8209 | } | |
8210 | ||
8211 | static int __devlink_params_register(struct devlink *devlink, | |
c1e5786d | 8212 | unsigned int port_index, |
39e6160e VV |
8213 | struct list_head *param_list, |
8214 | const struct devlink_param *params, | |
c1e5786d VV |
8215 | size_t params_count, |
8216 | enum devlink_command reg_cmd, | |
8217 | enum devlink_command unreg_cmd) | |
eabaef18 MS |
8218 | { |
8219 | const struct devlink_param *param = params; | |
8220 | int i; | |
8221 | int err; | |
8222 | ||
8223 | mutex_lock(&devlink->lock); | |
8224 | for (i = 0; i < params_count; i++, param++) { | |
39e6160e VV |
8225 | err = devlink_param_verify(param); |
8226 | if (err) | |
eabaef18 | 8227 | goto rollback; |
39e6160e | 8228 | |
c1e5786d VV |
8229 | err = devlink_param_register_one(devlink, port_index, |
8230 | param_list, param, reg_cmd); | |
eabaef18 MS |
8231 | if (err) |
8232 | goto rollback; | |
8233 | } | |
8234 | ||
8235 | mutex_unlock(&devlink->lock); | |
8236 | return 0; | |
8237 | ||
8238 | rollback: | |
8239 | if (!i) | |
8240 | goto unlock; | |
8241 | for (param--; i > 0; i--, param--) | |
c1e5786d VV |
8242 | devlink_param_unregister_one(devlink, port_index, param_list, |
8243 | param, unreg_cmd); | |
eabaef18 MS |
8244 | unlock: |
8245 | mutex_unlock(&devlink->lock); | |
8246 | return err; | |
8247 | } | |
39e6160e VV |
8248 | |
8249 | static void __devlink_params_unregister(struct devlink *devlink, | |
c1e5786d | 8250 | unsigned int port_index, |
39e6160e VV |
8251 | struct list_head *param_list, |
8252 | const struct devlink_param *params, | |
c1e5786d VV |
8253 | size_t params_count, |
8254 | enum devlink_command cmd) | |
39e6160e VV |
8255 | { |
8256 | const struct devlink_param *param = params; | |
8257 | int i; | |
8258 | ||
8259 | mutex_lock(&devlink->lock); | |
8260 | for (i = 0; i < params_count; i++, param++) | |
c1e5786d VV |
8261 | devlink_param_unregister_one(devlink, 0, param_list, param, |
8262 | cmd); | |
39e6160e VV |
8263 | mutex_unlock(&devlink->lock); |
8264 | } | |
8265 | ||
8266 | /** | |
8267 | * devlink_params_register - register configuration parameters | |
8268 | * | |
8269 | * @devlink: devlink | |
8270 | * @params: configuration parameters array | |
8271 | * @params_count: number of parameters provided | |
8272 | * | |
8273 | * Register the configuration parameters supported by the driver. | |
8274 | */ | |
8275 | int devlink_params_register(struct devlink *devlink, | |
8276 | const struct devlink_param *params, | |
8277 | size_t params_count) | |
8278 | { | |
c1e5786d VV |
8279 | return __devlink_params_register(devlink, 0, &devlink->param_list, |
8280 | params, params_count, | |
8281 | DEVLINK_CMD_PARAM_NEW, | |
8282 | DEVLINK_CMD_PARAM_DEL); | |
39e6160e | 8283 | } |
eabaef18 MS |
8284 | EXPORT_SYMBOL_GPL(devlink_params_register); |
8285 | ||
8286 | /** | |
8287 | * devlink_params_unregister - unregister configuration parameters | |
8288 | * @devlink: devlink | |
8289 | * @params: configuration parameters to unregister | |
8290 | * @params_count: number of parameters provided | |
8291 | */ | |
8292 | void devlink_params_unregister(struct devlink *devlink, | |
8293 | const struct devlink_param *params, | |
8294 | size_t params_count) | |
8295 | { | |
c1e5786d VV |
8296 | return __devlink_params_unregister(devlink, 0, &devlink->param_list, |
8297 | params, params_count, | |
8298 | DEVLINK_CMD_PARAM_DEL); | |
eabaef18 MS |
8299 | } |
8300 | EXPORT_SYMBOL_GPL(devlink_params_unregister); | |
8301 | ||
7c62cfb8 JP |
8302 | /** |
8303 | * devlink_params_publish - publish configuration parameters | |
8304 | * | |
8305 | * @devlink: devlink | |
8306 | * | |
8307 | * Publish previously registered configuration parameters. | |
8308 | */ | |
8309 | void devlink_params_publish(struct devlink *devlink) | |
8310 | { | |
8311 | struct devlink_param_item *param_item; | |
8312 | ||
8313 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
8314 | if (param_item->published) | |
8315 | continue; | |
8316 | param_item->published = true; | |
8317 | devlink_param_notify(devlink, 0, param_item, | |
8318 | DEVLINK_CMD_PARAM_NEW); | |
8319 | } | |
8320 | } | |
8321 | EXPORT_SYMBOL_GPL(devlink_params_publish); | |
8322 | ||
8323 | /** | |
8324 | * devlink_params_unpublish - unpublish configuration parameters | |
8325 | * | |
8326 | * @devlink: devlink | |
8327 | * | |
8328 | * Unpublish previously registered configuration parameters. | |
8329 | */ | |
8330 | void devlink_params_unpublish(struct devlink *devlink) | |
8331 | { | |
8332 | struct devlink_param_item *param_item; | |
8333 | ||
8334 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
8335 | if (!param_item->published) | |
8336 | continue; | |
8337 | param_item->published = false; | |
8338 | devlink_param_notify(devlink, 0, param_item, | |
8339 | DEVLINK_CMD_PARAM_DEL); | |
8340 | } | |
8341 | } | |
8342 | EXPORT_SYMBOL_GPL(devlink_params_unpublish); | |
8343 | ||
39e6160e VV |
8344 | /** |
8345 | * devlink_port_params_register - register port configuration parameters | |
8346 | * | |
8347 | * @devlink_port: devlink port | |
8348 | * @params: configuration parameters array | |
8349 | * @params_count: number of parameters provided | |
8350 | * | |
8351 | * Register the configuration parameters supported by the port. | |
8352 | */ | |
8353 | int devlink_port_params_register(struct devlink_port *devlink_port, | |
8354 | const struct devlink_param *params, | |
8355 | size_t params_count) | |
8356 | { | |
8357 | return __devlink_params_register(devlink_port->devlink, | |
c1e5786d | 8358 | devlink_port->index, |
39e6160e | 8359 | &devlink_port->param_list, params, |
c1e5786d VV |
8360 | params_count, |
8361 | DEVLINK_CMD_PORT_PARAM_NEW, | |
8362 | DEVLINK_CMD_PORT_PARAM_DEL); | |
39e6160e VV |
8363 | } |
8364 | EXPORT_SYMBOL_GPL(devlink_port_params_register); | |
8365 | ||
8366 | /** | |
8367 | * devlink_port_params_unregister - unregister port configuration | |
8368 | * parameters | |
8369 | * | |
8370 | * @devlink_port: devlink port | |
8371 | * @params: configuration parameters array | |
8372 | * @params_count: number of parameters provided | |
8373 | */ | |
8374 | void devlink_port_params_unregister(struct devlink_port *devlink_port, | |
8375 | const struct devlink_param *params, | |
8376 | size_t params_count) | |
8377 | { | |
8378 | return __devlink_params_unregister(devlink_port->devlink, | |
c1e5786d | 8379 | devlink_port->index, |
39e6160e | 8380 | &devlink_port->param_list, |
c1e5786d VV |
8381 | params, params_count, |
8382 | DEVLINK_CMD_PORT_PARAM_DEL); | |
39e6160e VV |
8383 | } |
8384 | EXPORT_SYMBOL_GPL(devlink_port_params_unregister); | |
8385 | ||
ffd19b9a VV |
8386 | static int |
8387 | __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id, | |
8388 | union devlink_param_value *init_val) | |
ec01aeb1 MS |
8389 | { |
8390 | struct devlink_param_item *param_item; | |
8391 | ||
ffd19b9a | 8392 | param_item = devlink_param_find_by_id(param_list, param_id); |
ec01aeb1 MS |
8393 | if (!param_item) |
8394 | return -EINVAL; | |
8395 | ||
8396 | if (!param_item->driverinit_value_valid || | |
8397 | !devlink_param_cmode_is_supported(param_item->param, | |
8398 | DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
8399 | return -EOPNOTSUPP; | |
8400 | ||
1276534c MS |
8401 | if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) |
8402 | strcpy(init_val->vstr, param_item->driverinit_value.vstr); | |
8403 | else | |
8404 | *init_val = param_item->driverinit_value; | |
ec01aeb1 MS |
8405 | |
8406 | return 0; | |
8407 | } | |
ffd19b9a | 8408 | |
5473a7bd VV |
8409 | static int |
8410 | __devlink_param_driverinit_value_set(struct devlink *devlink, | |
c1e5786d | 8411 | unsigned int port_index, |
5473a7bd VV |
8412 | struct list_head *param_list, u32 param_id, |
8413 | union devlink_param_value init_val, | |
8414 | enum devlink_command cmd) | |
8415 | { | |
8416 | struct devlink_param_item *param_item; | |
8417 | ||
8418 | param_item = devlink_param_find_by_id(param_list, param_id); | |
8419 | if (!param_item) | |
8420 | return -EINVAL; | |
8421 | ||
8422 | if (!devlink_param_cmode_is_supported(param_item->param, | |
8423 | DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
8424 | return -EOPNOTSUPP; | |
8425 | ||
8426 | if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) | |
8427 | strcpy(param_item->driverinit_value.vstr, init_val.vstr); | |
8428 | else | |
8429 | param_item->driverinit_value = init_val; | |
8430 | param_item->driverinit_value_valid = true; | |
8431 | ||
c1e5786d | 8432 | devlink_param_notify(devlink, port_index, param_item, cmd); |
5473a7bd VV |
8433 | return 0; |
8434 | } | |
8435 | ||
ffd19b9a VV |
8436 | /** |
8437 | * devlink_param_driverinit_value_get - get configuration parameter | |
8438 | * value for driver initializing | |
8439 | * | |
8440 | * @devlink: devlink | |
8441 | * @param_id: parameter ID | |
8442 | * @init_val: value of parameter in driverinit configuration mode | |
8443 | * | |
8444 | * This function should be used by the driver to get driverinit | |
8445 | * configuration for initialization after reload command. | |
8446 | */ | |
8447 | int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id, | |
8448 | union devlink_param_value *init_val) | |
8449 | { | |
97691069 | 8450 | if (!devlink_reload_supported(devlink)) |
ffd19b9a VV |
8451 | return -EOPNOTSUPP; |
8452 | ||
8453 | return __devlink_param_driverinit_value_get(&devlink->param_list, | |
8454 | param_id, init_val); | |
8455 | } | |
ec01aeb1 MS |
8456 | EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get); |
8457 | ||
8458 | /** | |
8459 | * devlink_param_driverinit_value_set - set value of configuration | |
8460 | * parameter for driverinit | |
8461 | * configuration mode | |
8462 | * | |
8463 | * @devlink: devlink | |
8464 | * @param_id: parameter ID | |
8465 | * @init_val: value of parameter to set for driverinit configuration mode | |
8466 | * | |
8467 | * This function should be used by the driver to set driverinit | |
8468 | * configuration mode default value. | |
8469 | */ | |
8470 | int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id, | |
8471 | union devlink_param_value init_val) | |
8472 | { | |
c1e5786d | 8473 | return __devlink_param_driverinit_value_set(devlink, 0, |
5473a7bd VV |
8474 | &devlink->param_list, |
8475 | param_id, init_val, | |
8476 | DEVLINK_CMD_PARAM_NEW); | |
ec01aeb1 MS |
8477 | } |
8478 | EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set); | |
8479 | ||
ffd19b9a VV |
8480 | /** |
8481 | * devlink_port_param_driverinit_value_get - get configuration parameter | |
8482 | * value for driver initializing | |
8483 | * | |
8484 | * @devlink_port: devlink_port | |
8485 | * @param_id: parameter ID | |
8486 | * @init_val: value of parameter in driverinit configuration mode | |
8487 | * | |
8488 | * This function should be used by the driver to get driverinit | |
8489 | * configuration for initialization after reload command. | |
8490 | */ | |
8491 | int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port, | |
8492 | u32 param_id, | |
8493 | union devlink_param_value *init_val) | |
8494 | { | |
8495 | struct devlink *devlink = devlink_port->devlink; | |
8496 | ||
97691069 | 8497 | if (!devlink_reload_supported(devlink)) |
ffd19b9a VV |
8498 | return -EOPNOTSUPP; |
8499 | ||
8500 | return __devlink_param_driverinit_value_get(&devlink_port->param_list, | |
8501 | param_id, init_val); | |
8502 | } | |
8503 | EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get); | |
8504 | ||
5473a7bd VV |
8505 | /** |
8506 | * devlink_port_param_driverinit_value_set - set value of configuration | |
8507 | * parameter for driverinit | |
8508 | * configuration mode | |
8509 | * | |
8510 | * @devlink_port: devlink_port | |
8511 | * @param_id: parameter ID | |
8512 | * @init_val: value of parameter to set for driverinit configuration mode | |
8513 | * | |
8514 | * This function should be used by the driver to set driverinit | |
8515 | * configuration mode default value. | |
8516 | */ | |
8517 | int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port, | |
8518 | u32 param_id, | |
8519 | union devlink_param_value init_val) | |
8520 | { | |
8521 | return __devlink_param_driverinit_value_set(devlink_port->devlink, | |
c1e5786d | 8522 | devlink_port->index, |
5473a7bd | 8523 | &devlink_port->param_list, |
c1e5786d VV |
8524 | param_id, init_val, |
8525 | DEVLINK_CMD_PORT_PARAM_NEW); | |
5473a7bd VV |
8526 | } |
8527 | EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set); | |
8528 | ||
ea601e17 MS |
8529 | /** |
8530 | * devlink_param_value_changed - notify devlink on a parameter's value | |
8531 | * change. Should be called by the driver | |
8532 | * right after the change. | |
8533 | * | |
8534 | * @devlink: devlink | |
8535 | * @param_id: parameter ID | |
8536 | * | |
8537 | * This function should be used by the driver to notify devlink on value | |
8538 | * change, excluding driverinit configuration mode. | |
8539 | * For driverinit configuration mode driver should use the function | |
ea601e17 MS |
8540 | */ |
8541 | void devlink_param_value_changed(struct devlink *devlink, u32 param_id) | |
8542 | { | |
8543 | struct devlink_param_item *param_item; | |
8544 | ||
8545 | param_item = devlink_param_find_by_id(&devlink->param_list, param_id); | |
8546 | WARN_ON(!param_item); | |
8547 | ||
c1e5786d | 8548 | devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW); |
ea601e17 MS |
8549 | } |
8550 | EXPORT_SYMBOL_GPL(devlink_param_value_changed); | |
8551 | ||
c1e5786d VV |
8552 | /** |
8553 | * devlink_port_param_value_changed - notify devlink on a parameter's value | |
8554 | * change. Should be called by the driver | |
8555 | * right after the change. | |
8556 | * | |
8557 | * @devlink_port: devlink_port | |
8558 | * @param_id: parameter ID | |
8559 | * | |
8560 | * This function should be used by the driver to notify devlink on value | |
8561 | * change, excluding driverinit configuration mode. | |
8562 | * For driverinit configuration mode driver should use the function | |
8563 | * devlink_port_param_driverinit_value_set() instead. | |
8564 | */ | |
8565 | void devlink_port_param_value_changed(struct devlink_port *devlink_port, | |
8566 | u32 param_id) | |
8567 | { | |
8568 | struct devlink_param_item *param_item; | |
8569 | ||
8570 | param_item = devlink_param_find_by_id(&devlink_port->param_list, | |
8571 | param_id); | |
8572 | WARN_ON(!param_item); | |
8573 | ||
8574 | devlink_param_notify(devlink_port->devlink, devlink_port->index, | |
8575 | param_item, DEVLINK_CMD_PORT_PARAM_NEW); | |
8576 | } | |
8577 | EXPORT_SYMBOL_GPL(devlink_port_param_value_changed); | |
8578 | ||
bde74ad1 MS |
8579 | /** |
8580 | * devlink_param_value_str_fill - Safely fill-up the string preventing | |
8581 | * from overflow of the preallocated buffer | |
8582 | * | |
8583 | * @dst_val: destination devlink_param_value | |
8584 | * @src: source buffer | |
8585 | */ | |
8586 | void devlink_param_value_str_fill(union devlink_param_value *dst_val, | |
8587 | const char *src) | |
8588 | { | |
8589 | size_t len; | |
8590 | ||
8591 | len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE); | |
8592 | WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE); | |
8593 | } | |
8594 | EXPORT_SYMBOL_GPL(devlink_param_value_str_fill); | |
8595 | ||
b16ebe92 AV |
8596 | /** |
8597 | * devlink_region_create - create a new address region | |
8598 | * | |
8599 | * @devlink: devlink | |
e8937681 | 8600 | * @ops: region operations and name |
b16ebe92 AV |
8601 | * @region_max_snapshots: Maximum supported number of snapshots for region |
8602 | * @region_size: size of region | |
8603 | */ | |
e8937681 JK |
8604 | struct devlink_region * |
8605 | devlink_region_create(struct devlink *devlink, | |
8606 | const struct devlink_region_ops *ops, | |
8607 | u32 region_max_snapshots, u64 region_size) | |
b16ebe92 AV |
8608 | { |
8609 | struct devlink_region *region; | |
8610 | int err = 0; | |
8611 | ||
a0a09f6b JK |
8612 | if (WARN_ON(!ops) || WARN_ON(!ops->destructor)) |
8613 | return ERR_PTR(-EINVAL); | |
8614 | ||
b16ebe92 AV |
8615 | mutex_lock(&devlink->lock); |
8616 | ||
e8937681 | 8617 | if (devlink_region_get_by_name(devlink, ops->name)) { |
b16ebe92 AV |
8618 | err = -EEXIST; |
8619 | goto unlock; | |
8620 | } | |
8621 | ||
8622 | region = kzalloc(sizeof(*region), GFP_KERNEL); | |
8623 | if (!region) { | |
8624 | err = -ENOMEM; | |
8625 | goto unlock; | |
8626 | } | |
8627 | ||
8628 | region->devlink = devlink; | |
8629 | region->max_snapshots = region_max_snapshots; | |
e8937681 | 8630 | region->ops = ops; |
b16ebe92 AV |
8631 | region->size = region_size; |
8632 | INIT_LIST_HEAD(®ion->snapshot_list); | |
8633 | list_add_tail(®ion->list, &devlink->region_list); | |
866319bb | 8634 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); |
b16ebe92 AV |
8635 | |
8636 | mutex_unlock(&devlink->lock); | |
8637 | return region; | |
8638 | ||
8639 | unlock: | |
8640 | mutex_unlock(&devlink->lock); | |
8641 | return ERR_PTR(err); | |
8642 | } | |
8643 | EXPORT_SYMBOL_GPL(devlink_region_create); | |
8644 | ||
8645 | /** | |
8646 | * devlink_region_destroy - destroy address region | |
8647 | * | |
8648 | * @region: devlink region to destroy | |
8649 | */ | |
8650 | void devlink_region_destroy(struct devlink_region *region) | |
8651 | { | |
8652 | struct devlink *devlink = region->devlink; | |
d7e52722 | 8653 | struct devlink_snapshot *snapshot, *ts; |
b16ebe92 AV |
8654 | |
8655 | mutex_lock(&devlink->lock); | |
d7e52722 AV |
8656 | |
8657 | /* Free all snapshots of region */ | |
8658 | list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list) | |
92b49822 | 8659 | devlink_region_snapshot_del(region, snapshot); |
d7e52722 | 8660 | |
b16ebe92 | 8661 | list_del(®ion->list); |
866319bb AV |
8662 | |
8663 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL); | |
b16ebe92 AV |
8664 | mutex_unlock(&devlink->lock); |
8665 | kfree(region); | |
8666 | } | |
8667 | EXPORT_SYMBOL_GPL(devlink_region_destroy); | |
8668 | ||
ccadfa44 | 8669 | /** |
b0efcae5 | 8670 | * devlink_region_snapshot_id_get - get snapshot ID |
ccadfa44 AV |
8671 | * |
8672 | * This callback should be called when adding a new snapshot, | |
8673 | * Driver should use the same id for multiple snapshots taken | |
8674 | * on multiple regions at the same time/by the same trigger. | |
8675 | * | |
12102436 JK |
8676 | * The caller of this function must use devlink_region_snapshot_id_put |
8677 | * when finished creating regions using this id. | |
8678 | * | |
7ef19d3b JK |
8679 | * Returns zero on success, or a negative error code on failure. |
8680 | * | |
ccadfa44 | 8681 | * @devlink: devlink |
7ef19d3b | 8682 | * @id: storage to return id |
ccadfa44 | 8683 | */ |
7ef19d3b | 8684 | int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) |
ccadfa44 | 8685 | { |
7ef19d3b | 8686 | int err; |
ccadfa44 AV |
8687 | |
8688 | mutex_lock(&devlink->lock); | |
7ef19d3b | 8689 | err = __devlink_region_snapshot_id_get(devlink, id); |
ccadfa44 AV |
8690 | mutex_unlock(&devlink->lock); |
8691 | ||
7ef19d3b | 8692 | return err; |
ccadfa44 | 8693 | } |
b0efcae5 | 8694 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get); |
ccadfa44 | 8695 | |
12102436 JK |
8696 | /** |
8697 | * devlink_region_snapshot_id_put - put snapshot ID reference | |
8698 | * | |
8699 | * This should be called by a driver after finishing creating snapshots | |
8700 | * with an id. Doing so ensures that the ID can later be released in the | |
8701 | * event that all snapshots using it have been destroyed. | |
8702 | * | |
8703 | * @devlink: devlink | |
8704 | * @id: id to release reference on | |
8705 | */ | |
8706 | void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id) | |
8707 | { | |
8708 | mutex_lock(&devlink->lock); | |
8709 | __devlink_snapshot_id_decrement(devlink, id); | |
8710 | mutex_unlock(&devlink->lock); | |
8711 | } | |
8712 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put); | |
8713 | ||
d7e52722 AV |
8714 | /** |
8715 | * devlink_region_snapshot_create - create a new snapshot | |
8716 | * This will add a new snapshot of a region. The snapshot | |
8717 | * will be stored on the region struct and can be accessed | |
6d82f67e | 8718 | * from devlink. This is useful for future analyses of snapshots. |
d7e52722 AV |
8719 | * Multiple snapshots can be created on a region. |
8720 | * The @snapshot_id should be obtained using the getter function. | |
8721 | * | |
eeaadd82 | 8722 | * @region: devlink region of the snapshot |
d7e52722 AV |
8723 | * @data: snapshot data |
8724 | * @snapshot_id: snapshot id to be created | |
d7e52722 | 8725 | */ |
3a5e5234 | 8726 | int devlink_region_snapshot_create(struct devlink_region *region, |
a0a09f6b | 8727 | u8 *data, u32 snapshot_id) |
d7e52722 AV |
8728 | { |
8729 | struct devlink *devlink = region->devlink; | |
d7e52722 AV |
8730 | int err; |
8731 | ||
8732 | mutex_lock(&devlink->lock); | |
cf80faee | 8733 | err = __devlink_region_snapshot_create(region, data, snapshot_id); |
d7e52722 | 8734 | mutex_unlock(&devlink->lock); |
d7e52722 | 8735 | |
d7e52722 AV |
8736 | return err; |
8737 | } | |
8738 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_create); | |
8739 | ||
0f420b6c IS |
8740 | #define DEVLINK_TRAP(_id, _type) \ |
8741 | { \ | |
8742 | .type = DEVLINK_TRAP_TYPE_##_type, \ | |
8743 | .id = DEVLINK_TRAP_GENERIC_ID_##_id, \ | |
8744 | .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \ | |
8745 | } | |
8746 | ||
8747 | static const struct devlink_trap devlink_trap_generic[] = { | |
391203ab IS |
8748 | DEVLINK_TRAP(SMAC_MC, DROP), |
8749 | DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP), | |
8750 | DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP), | |
8751 | DEVLINK_TRAP(INGRESS_STP_FILTER, DROP), | |
8752 | DEVLINK_TRAP(EMPTY_TX_LIST, DROP), | |
8753 | DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP), | |
8754 | DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP), | |
8755 | DEVLINK_TRAP(TTL_ERROR, EXCEPTION), | |
8756 | DEVLINK_TRAP(TAIL_DROP, DROP), | |
6896cc4d AC |
8757 | DEVLINK_TRAP(NON_IP_PACKET, DROP), |
8758 | DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP), | |
8759 | DEVLINK_TRAP(DIP_LB, DROP), | |
8760 | DEVLINK_TRAP(SIP_MC, DROP), | |
8761 | DEVLINK_TRAP(SIP_LB, DROP), | |
8762 | DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP), | |
8763 | DEVLINK_TRAP(IPV4_SIP_BC, DROP), | |
8764 | DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP), | |
8765 | DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP), | |
3b063ae5 AC |
8766 | DEVLINK_TRAP(MTU_ERROR, EXCEPTION), |
8767 | DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION), | |
8768 | DEVLINK_TRAP(RPF, EXCEPTION), | |
8769 | DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION), | |
8770 | DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION), | |
8771 | DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION), | |
95f0ead8 | 8772 | DEVLINK_TRAP(NON_ROUTABLE, DROP), |
13c056ec | 8773 | DEVLINK_TRAP(DECAP_ERROR, EXCEPTION), |
c3cae491 | 8774 | DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP), |
ecd942a0 JP |
8775 | DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP), |
8776 | DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP), | |
515eac67 IS |
8777 | DEVLINK_TRAP(STP, CONTROL), |
8778 | DEVLINK_TRAP(LACP, CONTROL), | |
8779 | DEVLINK_TRAP(LLDP, CONTROL), | |
8780 | DEVLINK_TRAP(IGMP_QUERY, CONTROL), | |
8781 | DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL), | |
8782 | DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL), | |
8783 | DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL), | |
8784 | DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL), | |
8785 | DEVLINK_TRAP(MLD_QUERY, CONTROL), | |
8786 | DEVLINK_TRAP(MLD_V1_REPORT, CONTROL), | |
8787 | DEVLINK_TRAP(MLD_V2_REPORT, CONTROL), | |
8788 | DEVLINK_TRAP(MLD_V1_DONE, CONTROL), | |
d77cfd16 IS |
8789 | DEVLINK_TRAP(IPV4_DHCP, CONTROL), |
8790 | DEVLINK_TRAP(IPV6_DHCP, CONTROL), | |
8791 | DEVLINK_TRAP(ARP_REQUEST, CONTROL), | |
8792 | DEVLINK_TRAP(ARP_RESPONSE, CONTROL), | |
8793 | DEVLINK_TRAP(ARP_OVERLAY, CONTROL), | |
8794 | DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL), | |
8795 | DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL), | |
8796 | DEVLINK_TRAP(IPV4_BFD, CONTROL), | |
8797 | DEVLINK_TRAP(IPV6_BFD, CONTROL), | |
8798 | DEVLINK_TRAP(IPV4_OSPF, CONTROL), | |
8799 | DEVLINK_TRAP(IPV6_OSPF, CONTROL), | |
8800 | DEVLINK_TRAP(IPV4_BGP, CONTROL), | |
8801 | DEVLINK_TRAP(IPV6_BGP, CONTROL), | |
8802 | DEVLINK_TRAP(IPV4_VRRP, CONTROL), | |
8803 | DEVLINK_TRAP(IPV6_VRRP, CONTROL), | |
8804 | DEVLINK_TRAP(IPV4_PIM, CONTROL), | |
8805 | DEVLINK_TRAP(IPV6_PIM, CONTROL), | |
8806 | DEVLINK_TRAP(UC_LB, CONTROL), | |
8807 | DEVLINK_TRAP(LOCAL_ROUTE, CONTROL), | |
8808 | DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL), | |
8809 | DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL), | |
8810 | DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL), | |
8811 | DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL), | |
8812 | DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL), | |
8813 | DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL), | |
8814 | DEVLINK_TRAP(IPV6_REDIRECT, CONTROL), | |
8815 | DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL), | |
8816 | DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL), | |
8817 | DEVLINK_TRAP(PTP_EVENT, CONTROL), | |
8818 | DEVLINK_TRAP(PTP_GENERAL, CONTROL), | |
5eb18a2b IS |
8819 | DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL), |
8820 | DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL), | |
08e335f6 | 8821 | DEVLINK_TRAP(EARLY_DROP, DROP), |
0f420b6c IS |
8822 | }; |
8823 | ||
8824 | #define DEVLINK_TRAP_GROUP(_id) \ | |
8825 | { \ | |
8826 | .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \ | |
8827 | .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \ | |
8828 | } | |
8829 | ||
8830 | static const struct devlink_trap_group devlink_trap_group_generic[] = { | |
391203ab IS |
8831 | DEVLINK_TRAP_GROUP(L2_DROPS), |
8832 | DEVLINK_TRAP_GROUP(L3_DROPS), | |
678eb199 | 8833 | DEVLINK_TRAP_GROUP(L3_EXCEPTIONS), |
391203ab | 8834 | DEVLINK_TRAP_GROUP(BUFFER_DROPS), |
13c056ec | 8835 | DEVLINK_TRAP_GROUP(TUNNEL_DROPS), |
ecd942a0 | 8836 | DEVLINK_TRAP_GROUP(ACL_DROPS), |
515eac67 IS |
8837 | DEVLINK_TRAP_GROUP(STP), |
8838 | DEVLINK_TRAP_GROUP(LACP), | |
8839 | DEVLINK_TRAP_GROUP(LLDP), | |
8840 | DEVLINK_TRAP_GROUP(MC_SNOOPING), | |
d77cfd16 IS |
8841 | DEVLINK_TRAP_GROUP(DHCP), |
8842 | DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY), | |
8843 | DEVLINK_TRAP_GROUP(BFD), | |
8844 | DEVLINK_TRAP_GROUP(OSPF), | |
8845 | DEVLINK_TRAP_GROUP(BGP), | |
8846 | DEVLINK_TRAP_GROUP(VRRP), | |
8847 | DEVLINK_TRAP_GROUP(PIM), | |
8848 | DEVLINK_TRAP_GROUP(UC_LB), | |
8849 | DEVLINK_TRAP_GROUP(LOCAL_DELIVERY), | |
ec4f5b36 | 8850 | DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY), |
d77cfd16 IS |
8851 | DEVLINK_TRAP_GROUP(IPV6), |
8852 | DEVLINK_TRAP_GROUP(PTP_EVENT), | |
8853 | DEVLINK_TRAP_GROUP(PTP_GENERAL), | |
5eb18a2b IS |
8854 | DEVLINK_TRAP_GROUP(ACL_SAMPLE), |
8855 | DEVLINK_TRAP_GROUP(ACL_TRAP), | |
0f420b6c IS |
8856 | }; |
8857 | ||
8858 | static int devlink_trap_generic_verify(const struct devlink_trap *trap) | |
8859 | { | |
8860 | if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX) | |
8861 | return -EINVAL; | |
8862 | ||
8863 | if (strcmp(trap->name, devlink_trap_generic[trap->id].name)) | |
8864 | return -EINVAL; | |
8865 | ||
8866 | if (trap->type != devlink_trap_generic[trap->id].type) | |
8867 | return -EINVAL; | |
8868 | ||
8869 | return 0; | |
8870 | } | |
8871 | ||
8872 | static int devlink_trap_driver_verify(const struct devlink_trap *trap) | |
8873 | { | |
8874 | int i; | |
8875 | ||
8876 | if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX) | |
8877 | return -EINVAL; | |
8878 | ||
8879 | for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) { | |
8880 | if (!strcmp(trap->name, devlink_trap_generic[i].name)) | |
8881 | return -EEXIST; | |
8882 | } | |
8883 | ||
8884 | return 0; | |
8885 | } | |
8886 | ||
8887 | static int devlink_trap_verify(const struct devlink_trap *trap) | |
8888 | { | |
107f1678 | 8889 | if (!trap || !trap->name) |
0f420b6c IS |
8890 | return -EINVAL; |
8891 | ||
8892 | if (trap->generic) | |
8893 | return devlink_trap_generic_verify(trap); | |
8894 | else | |
8895 | return devlink_trap_driver_verify(trap); | |
8896 | } | |
8897 | ||
8898 | static int | |
8899 | devlink_trap_group_generic_verify(const struct devlink_trap_group *group) | |
8900 | { | |
8901 | if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX) | |
8902 | return -EINVAL; | |
8903 | ||
8904 | if (strcmp(group->name, devlink_trap_group_generic[group->id].name)) | |
8905 | return -EINVAL; | |
8906 | ||
8907 | return 0; | |
8908 | } | |
8909 | ||
8910 | static int | |
8911 | devlink_trap_group_driver_verify(const struct devlink_trap_group *group) | |
8912 | { | |
8913 | int i; | |
8914 | ||
8915 | if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX) | |
8916 | return -EINVAL; | |
8917 | ||
8918 | for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) { | |
8919 | if (!strcmp(group->name, devlink_trap_group_generic[i].name)) | |
8920 | return -EEXIST; | |
8921 | } | |
8922 | ||
8923 | return 0; | |
8924 | } | |
8925 | ||
8926 | static int devlink_trap_group_verify(const struct devlink_trap_group *group) | |
8927 | { | |
8928 | if (group->generic) | |
8929 | return devlink_trap_group_generic_verify(group); | |
8930 | else | |
8931 | return devlink_trap_group_driver_verify(group); | |
8932 | } | |
8933 | ||
8934 | static void | |
8935 | devlink_trap_group_notify(struct devlink *devlink, | |
8936 | const struct devlink_trap_group_item *group_item, | |
8937 | enum devlink_command cmd) | |
8938 | { | |
8939 | struct sk_buff *msg; | |
8940 | int err; | |
8941 | ||
8942 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW && | |
8943 | cmd != DEVLINK_CMD_TRAP_GROUP_DEL); | |
8944 | ||
8945 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
8946 | if (!msg) | |
8947 | return; | |
8948 | ||
8949 | err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0, | |
8950 | 0); | |
8951 | if (err) { | |
8952 | nlmsg_free(msg); | |
8953 | return; | |
8954 | } | |
8955 | ||
8956 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
8957 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
8958 | } | |
8959 | ||
0f420b6c IS |
8960 | static int |
8961 | devlink_trap_item_group_link(struct devlink *devlink, | |
8962 | struct devlink_trap_item *trap_item) | |
8963 | { | |
107f1678 | 8964 | u16 group_id = trap_item->trap->init_group_id; |
0f420b6c IS |
8965 | struct devlink_trap_group_item *group_item; |
8966 | ||
107f1678 | 8967 | group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id); |
a09b37fc IS |
8968 | if (WARN_ON_ONCE(!group_item)) |
8969 | return -EINVAL; | |
0f420b6c IS |
8970 | |
8971 | trap_item->group_item = group_item; | |
8972 | ||
8973 | return 0; | |
8974 | } | |
8975 | ||
0f420b6c IS |
8976 | static void devlink_trap_notify(struct devlink *devlink, |
8977 | const struct devlink_trap_item *trap_item, | |
8978 | enum devlink_command cmd) | |
8979 | { | |
8980 | struct sk_buff *msg; | |
8981 | int err; | |
8982 | ||
8983 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW && | |
8984 | cmd != DEVLINK_CMD_TRAP_DEL); | |
8985 | ||
8986 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
8987 | if (!msg) | |
8988 | return; | |
8989 | ||
8990 | err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0); | |
8991 | if (err) { | |
8992 | nlmsg_free(msg); | |
8993 | return; | |
8994 | } | |
8995 | ||
8996 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
8997 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
8998 | } | |
8999 | ||
9000 | static int | |
9001 | devlink_trap_register(struct devlink *devlink, | |
9002 | const struct devlink_trap *trap, void *priv) | |
9003 | { | |
9004 | struct devlink_trap_item *trap_item; | |
9005 | int err; | |
9006 | ||
9007 | if (devlink_trap_item_lookup(devlink, trap->name)) | |
9008 | return -EEXIST; | |
9009 | ||
9010 | trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL); | |
9011 | if (!trap_item) | |
9012 | return -ENOMEM; | |
9013 | ||
9014 | trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats); | |
9015 | if (!trap_item->stats) { | |
9016 | err = -ENOMEM; | |
9017 | goto err_stats_alloc; | |
9018 | } | |
9019 | ||
9020 | trap_item->trap = trap; | |
9021 | trap_item->action = trap->init_action; | |
9022 | trap_item->priv = priv; | |
9023 | ||
9024 | err = devlink_trap_item_group_link(devlink, trap_item); | |
9025 | if (err) | |
9026 | goto err_group_link; | |
9027 | ||
9028 | err = devlink->ops->trap_init(devlink, trap, trap_item); | |
9029 | if (err) | |
9030 | goto err_trap_init; | |
9031 | ||
9032 | list_add_tail(&trap_item->list, &devlink->trap_list); | |
9033 | devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW); | |
9034 | ||
9035 | return 0; | |
9036 | ||
9037 | err_trap_init: | |
0f420b6c IS |
9038 | err_group_link: |
9039 | free_percpu(trap_item->stats); | |
9040 | err_stats_alloc: | |
9041 | kfree(trap_item); | |
9042 | return err; | |
9043 | } | |
9044 | ||
9045 | static void devlink_trap_unregister(struct devlink *devlink, | |
9046 | const struct devlink_trap *trap) | |
9047 | { | |
9048 | struct devlink_trap_item *trap_item; | |
9049 | ||
9050 | trap_item = devlink_trap_item_lookup(devlink, trap->name); | |
9051 | if (WARN_ON_ONCE(!trap_item)) | |
9052 | return; | |
9053 | ||
9054 | devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL); | |
9055 | list_del(&trap_item->list); | |
9056 | if (devlink->ops->trap_fini) | |
9057 | devlink->ops->trap_fini(devlink, trap, trap_item); | |
0f420b6c IS |
9058 | free_percpu(trap_item->stats); |
9059 | kfree(trap_item); | |
9060 | } | |
9061 | ||
9062 | static void devlink_trap_disable(struct devlink *devlink, | |
9063 | const struct devlink_trap *trap) | |
9064 | { | |
9065 | struct devlink_trap_item *trap_item; | |
9066 | ||
9067 | trap_item = devlink_trap_item_lookup(devlink, trap->name); | |
9068 | if (WARN_ON_ONCE(!trap_item)) | |
9069 | return; | |
9070 | ||
c88e11e0 IS |
9071 | devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP, |
9072 | NULL); | |
0f420b6c IS |
9073 | trap_item->action = DEVLINK_TRAP_ACTION_DROP; |
9074 | } | |
9075 | ||
9076 | /** | |
9077 | * devlink_traps_register - Register packet traps with devlink. | |
9078 | * @devlink: devlink. | |
9079 | * @traps: Packet traps. | |
9080 | * @traps_count: Count of provided packet traps. | |
9081 | * @priv: Driver private information. | |
9082 | * | |
9083 | * Return: Non-zero value on failure. | |
9084 | */ | |
9085 | int devlink_traps_register(struct devlink *devlink, | |
9086 | const struct devlink_trap *traps, | |
9087 | size_t traps_count, void *priv) | |
9088 | { | |
9089 | int i, err; | |
9090 | ||
9091 | if (!devlink->ops->trap_init || !devlink->ops->trap_action_set) | |
9092 | return -EINVAL; | |
9093 | ||
9094 | mutex_lock(&devlink->lock); | |
9095 | for (i = 0; i < traps_count; i++) { | |
9096 | const struct devlink_trap *trap = &traps[i]; | |
9097 | ||
9098 | err = devlink_trap_verify(trap); | |
9099 | if (err) | |
9100 | goto err_trap_verify; | |
9101 | ||
9102 | err = devlink_trap_register(devlink, trap, priv); | |
9103 | if (err) | |
9104 | goto err_trap_register; | |
9105 | } | |
9106 | mutex_unlock(&devlink->lock); | |
9107 | ||
9108 | return 0; | |
9109 | ||
9110 | err_trap_register: | |
9111 | err_trap_verify: | |
9112 | for (i--; i >= 0; i--) | |
9113 | devlink_trap_unregister(devlink, &traps[i]); | |
9114 | mutex_unlock(&devlink->lock); | |
9115 | return err; | |
9116 | } | |
9117 | EXPORT_SYMBOL_GPL(devlink_traps_register); | |
9118 | ||
9119 | /** | |
9120 | * devlink_traps_unregister - Unregister packet traps from devlink. | |
9121 | * @devlink: devlink. | |
9122 | * @traps: Packet traps. | |
9123 | * @traps_count: Count of provided packet traps. | |
9124 | */ | |
9125 | void devlink_traps_unregister(struct devlink *devlink, | |
9126 | const struct devlink_trap *traps, | |
9127 | size_t traps_count) | |
9128 | { | |
9129 | int i; | |
9130 | ||
9131 | mutex_lock(&devlink->lock); | |
9132 | /* Make sure we do not have any packets in-flight while unregistering | |
9133 | * traps by disabling all of them and waiting for a grace period. | |
9134 | */ | |
9135 | for (i = traps_count - 1; i >= 0; i--) | |
9136 | devlink_trap_disable(devlink, &traps[i]); | |
9137 | synchronize_rcu(); | |
9138 | for (i = traps_count - 1; i >= 0; i--) | |
9139 | devlink_trap_unregister(devlink, &traps[i]); | |
9140 | mutex_unlock(&devlink->lock); | |
9141 | } | |
9142 | EXPORT_SYMBOL_GPL(devlink_traps_unregister); | |
9143 | ||
9144 | static void | |
9145 | devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats, | |
9146 | size_t skb_len) | |
9147 | { | |
9148 | struct devlink_stats *stats; | |
9149 | ||
9150 | stats = this_cpu_ptr(trap_stats); | |
9151 | u64_stats_update_begin(&stats->syncp); | |
9152 | stats->rx_bytes += skb_len; | |
9153 | stats->rx_packets++; | |
9154 | u64_stats_update_end(&stats->syncp); | |
9155 | } | |
9156 | ||
9157 | static void | |
9158 | devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata, | |
9159 | const struct devlink_trap_item *trap_item, | |
5a2e106c JP |
9160 | struct devlink_port *in_devlink_port, |
9161 | const struct flow_action_cookie *fa_cookie) | |
0f420b6c IS |
9162 | { |
9163 | struct devlink_trap_group_item *group_item = trap_item->group_item; | |
9164 | ||
9165 | hw_metadata->trap_group_name = group_item->group->name; | |
9166 | hw_metadata->trap_name = trap_item->trap->name; | |
5a2e106c | 9167 | hw_metadata->fa_cookie = fa_cookie; |
0f420b6c IS |
9168 | |
9169 | spin_lock(&in_devlink_port->type_lock); | |
9170 | if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH) | |
9171 | hw_metadata->input_dev = in_devlink_port->type_dev; | |
9172 | spin_unlock(&in_devlink_port->type_lock); | |
9173 | } | |
9174 | ||
9175 | /** | |
9176 | * devlink_trap_report - Report trapped packet to drop monitor. | |
9177 | * @devlink: devlink. | |
9178 | * @skb: Trapped packet. | |
9179 | * @trap_ctx: Trap context. | |
9180 | * @in_devlink_port: Input devlink port. | |
5a2e106c | 9181 | * @fa_cookie: Flow action cookie. Could be NULL. |
0f420b6c IS |
9182 | */ |
9183 | void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb, | |
5a2e106c JP |
9184 | void *trap_ctx, struct devlink_port *in_devlink_port, |
9185 | const struct flow_action_cookie *fa_cookie) | |
9186 | ||
0f420b6c IS |
9187 | { |
9188 | struct devlink_trap_item *trap_item = trap_ctx; | |
9189 | struct net_dm_hw_metadata hw_metadata = {}; | |
9190 | ||
9191 | devlink_trap_stats_update(trap_item->stats, skb->len); | |
9192 | devlink_trap_stats_update(trap_item->group_item->stats, skb->len); | |
9193 | ||
30a4e9a2 IS |
9194 | /* Control packets were not dropped by the device or encountered an |
9195 | * exception during forwarding and therefore should not be reported to | |
9196 | * the kernel's drop monitor. | |
9197 | */ | |
9198 | if (trap_item->trap->type == DEVLINK_TRAP_TYPE_CONTROL) | |
9199 | return; | |
9200 | ||
0f420b6c | 9201 | devlink_trap_report_metadata_fill(&hw_metadata, trap_item, |
5a2e106c | 9202 | in_devlink_port, fa_cookie); |
0f420b6c IS |
9203 | net_dm_hw_report(skb, &hw_metadata); |
9204 | } | |
9205 | EXPORT_SYMBOL_GPL(devlink_trap_report); | |
9206 | ||
9207 | /** | |
9208 | * devlink_trap_ctx_priv - Trap context to driver private information. | |
9209 | * @trap_ctx: Trap context. | |
9210 | * | |
9211 | * Return: Driver private information passed during registration. | |
9212 | */ | |
9213 | void *devlink_trap_ctx_priv(void *trap_ctx) | |
9214 | { | |
9215 | struct devlink_trap_item *trap_item = trap_ctx; | |
9216 | ||
9217 | return trap_item->priv; | |
9218 | } | |
9219 | EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv); | |
9220 | ||
f9f54392 IS |
9221 | static int |
9222 | devlink_trap_group_item_policer_link(struct devlink *devlink, | |
9223 | struct devlink_trap_group_item *group_item) | |
9224 | { | |
9225 | u32 policer_id = group_item->group->init_policer_id; | |
9226 | struct devlink_trap_policer_item *policer_item; | |
9227 | ||
9228 | if (policer_id == 0) | |
9229 | return 0; | |
9230 | ||
9231 | policer_item = devlink_trap_policer_item_lookup(devlink, policer_id); | |
9232 | if (WARN_ON_ONCE(!policer_item)) | |
9233 | return -EINVAL; | |
9234 | ||
9235 | group_item->policer_item = policer_item; | |
9236 | ||
9237 | return 0; | |
9238 | } | |
9239 | ||
95ad9555 IS |
9240 | static int |
9241 | devlink_trap_group_register(struct devlink *devlink, | |
9242 | const struct devlink_trap_group *group) | |
9243 | { | |
9244 | struct devlink_trap_group_item *group_item; | |
9245 | int err; | |
9246 | ||
9247 | if (devlink_trap_group_item_lookup(devlink, group->name)) | |
9248 | return -EEXIST; | |
9249 | ||
9250 | group_item = kzalloc(sizeof(*group_item), GFP_KERNEL); | |
9251 | if (!group_item) | |
9252 | return -ENOMEM; | |
9253 | ||
9254 | group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats); | |
9255 | if (!group_item->stats) { | |
9256 | err = -ENOMEM; | |
9257 | goto err_stats_alloc; | |
9258 | } | |
9259 | ||
9260 | group_item->group = group; | |
95ad9555 | 9261 | |
f9f54392 IS |
9262 | err = devlink_trap_group_item_policer_link(devlink, group_item); |
9263 | if (err) | |
9264 | goto err_policer_link; | |
9265 | ||
95ad9555 IS |
9266 | if (devlink->ops->trap_group_init) { |
9267 | err = devlink->ops->trap_group_init(devlink, group); | |
9268 | if (err) | |
9269 | goto err_group_init; | |
9270 | } | |
9271 | ||
9272 | list_add_tail(&group_item->list, &devlink->trap_group_list); | |
9273 | devlink_trap_group_notify(devlink, group_item, | |
9274 | DEVLINK_CMD_TRAP_GROUP_NEW); | |
9275 | ||
9276 | return 0; | |
9277 | ||
9278 | err_group_init: | |
f9f54392 | 9279 | err_policer_link: |
95ad9555 IS |
9280 | free_percpu(group_item->stats); |
9281 | err_stats_alloc: | |
9282 | kfree(group_item); | |
9283 | return err; | |
9284 | } | |
9285 | ||
9286 | static void | |
9287 | devlink_trap_group_unregister(struct devlink *devlink, | |
9288 | const struct devlink_trap_group *group) | |
9289 | { | |
9290 | struct devlink_trap_group_item *group_item; | |
9291 | ||
9292 | group_item = devlink_trap_group_item_lookup(devlink, group->name); | |
9293 | if (WARN_ON_ONCE(!group_item)) | |
9294 | return; | |
9295 | ||
9296 | devlink_trap_group_notify(devlink, group_item, | |
9297 | DEVLINK_CMD_TRAP_GROUP_DEL); | |
9298 | list_del(&group_item->list); | |
9299 | free_percpu(group_item->stats); | |
9300 | kfree(group_item); | |
9301 | } | |
9302 | ||
9303 | /** | |
9304 | * devlink_trap_groups_register - Register packet trap groups with devlink. | |
9305 | * @devlink: devlink. | |
9306 | * @groups: Packet trap groups. | |
9307 | * @groups_count: Count of provided packet trap groups. | |
9308 | * | |
9309 | * Return: Non-zero value on failure. | |
9310 | */ | |
9311 | int devlink_trap_groups_register(struct devlink *devlink, | |
9312 | const struct devlink_trap_group *groups, | |
9313 | size_t groups_count) | |
9314 | { | |
9315 | int i, err; | |
9316 | ||
9317 | mutex_lock(&devlink->lock); | |
9318 | for (i = 0; i < groups_count; i++) { | |
9319 | const struct devlink_trap_group *group = &groups[i]; | |
9320 | ||
9321 | err = devlink_trap_group_verify(group); | |
9322 | if (err) | |
9323 | goto err_trap_group_verify; | |
9324 | ||
9325 | err = devlink_trap_group_register(devlink, group); | |
9326 | if (err) | |
9327 | goto err_trap_group_register; | |
9328 | } | |
9329 | mutex_unlock(&devlink->lock); | |
9330 | ||
9331 | return 0; | |
9332 | ||
9333 | err_trap_group_register: | |
9334 | err_trap_group_verify: | |
9335 | for (i--; i >= 0; i--) | |
9336 | devlink_trap_group_unregister(devlink, &groups[i]); | |
9337 | mutex_unlock(&devlink->lock); | |
9338 | return err; | |
9339 | } | |
9340 | EXPORT_SYMBOL_GPL(devlink_trap_groups_register); | |
9341 | ||
9342 | /** | |
9343 | * devlink_trap_groups_unregister - Unregister packet trap groups from devlink. | |
9344 | * @devlink: devlink. | |
9345 | * @groups: Packet trap groups. | |
9346 | * @groups_count: Count of provided packet trap groups. | |
9347 | */ | |
9348 | void devlink_trap_groups_unregister(struct devlink *devlink, | |
9349 | const struct devlink_trap_group *groups, | |
9350 | size_t groups_count) | |
9351 | { | |
9352 | int i; | |
9353 | ||
9354 | mutex_lock(&devlink->lock); | |
9355 | for (i = groups_count - 1; i >= 0; i--) | |
9356 | devlink_trap_group_unregister(devlink, &groups[i]); | |
9357 | mutex_unlock(&devlink->lock); | |
9358 | } | |
9359 | EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister); | |
9360 | ||
1e8c6619 IS |
9361 | static void |
9362 | devlink_trap_policer_notify(struct devlink *devlink, | |
9363 | const struct devlink_trap_policer_item *policer_item, | |
9364 | enum devlink_command cmd) | |
9365 | { | |
9366 | struct sk_buff *msg; | |
9367 | int err; | |
9368 | ||
9369 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW && | |
9370 | cmd != DEVLINK_CMD_TRAP_POLICER_DEL); | |
9371 | ||
9372 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
9373 | if (!msg) | |
9374 | return; | |
9375 | ||
9376 | err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0, | |
9377 | 0, 0); | |
9378 | if (err) { | |
9379 | nlmsg_free(msg); | |
9380 | return; | |
9381 | } | |
9382 | ||
9383 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
9384 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
9385 | } | |
9386 | ||
9387 | static int | |
9388 | devlink_trap_policer_register(struct devlink *devlink, | |
9389 | const struct devlink_trap_policer *policer) | |
9390 | { | |
9391 | struct devlink_trap_policer_item *policer_item; | |
9392 | int err; | |
9393 | ||
9394 | if (devlink_trap_policer_item_lookup(devlink, policer->id)) | |
9395 | return -EEXIST; | |
9396 | ||
9397 | policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL); | |
9398 | if (!policer_item) | |
9399 | return -ENOMEM; | |
9400 | ||
9401 | policer_item->policer = policer; | |
9402 | policer_item->rate = policer->init_rate; | |
9403 | policer_item->burst = policer->init_burst; | |
9404 | ||
9405 | if (devlink->ops->trap_policer_init) { | |
9406 | err = devlink->ops->trap_policer_init(devlink, policer); | |
9407 | if (err) | |
9408 | goto err_policer_init; | |
9409 | } | |
9410 | ||
9411 | list_add_tail(&policer_item->list, &devlink->trap_policer_list); | |
9412 | devlink_trap_policer_notify(devlink, policer_item, | |
9413 | DEVLINK_CMD_TRAP_POLICER_NEW); | |
9414 | ||
9415 | return 0; | |
9416 | ||
9417 | err_policer_init: | |
9418 | kfree(policer_item); | |
9419 | return err; | |
9420 | } | |
9421 | ||
9422 | static void | |
9423 | devlink_trap_policer_unregister(struct devlink *devlink, | |
9424 | const struct devlink_trap_policer *policer) | |
9425 | { | |
9426 | struct devlink_trap_policer_item *policer_item; | |
9427 | ||
9428 | policer_item = devlink_trap_policer_item_lookup(devlink, policer->id); | |
9429 | if (WARN_ON_ONCE(!policer_item)) | |
9430 | return; | |
9431 | ||
9432 | devlink_trap_policer_notify(devlink, policer_item, | |
9433 | DEVLINK_CMD_TRAP_POLICER_DEL); | |
9434 | list_del(&policer_item->list); | |
9435 | if (devlink->ops->trap_policer_fini) | |
9436 | devlink->ops->trap_policer_fini(devlink, policer); | |
9437 | kfree(policer_item); | |
9438 | } | |
9439 | ||
9440 | /** | |
9441 | * devlink_trap_policers_register - Register packet trap policers with devlink. | |
9442 | * @devlink: devlink. | |
9443 | * @policers: Packet trap policers. | |
9444 | * @policers_count: Count of provided packet trap policers. | |
9445 | * | |
9446 | * Return: Non-zero value on failure. | |
9447 | */ | |
9448 | int | |
9449 | devlink_trap_policers_register(struct devlink *devlink, | |
9450 | const struct devlink_trap_policer *policers, | |
9451 | size_t policers_count) | |
9452 | { | |
9453 | int i, err; | |
9454 | ||
9455 | mutex_lock(&devlink->lock); | |
9456 | for (i = 0; i < policers_count; i++) { | |
9457 | const struct devlink_trap_policer *policer = &policers[i]; | |
9458 | ||
9459 | if (WARN_ON(policer->id == 0 || | |
9460 | policer->max_rate < policer->min_rate || | |
9461 | policer->max_burst < policer->min_burst)) { | |
9462 | err = -EINVAL; | |
9463 | goto err_trap_policer_verify; | |
9464 | } | |
9465 | ||
9466 | err = devlink_trap_policer_register(devlink, policer); | |
9467 | if (err) | |
9468 | goto err_trap_policer_register; | |
9469 | } | |
9470 | mutex_unlock(&devlink->lock); | |
9471 | ||
9472 | return 0; | |
9473 | ||
9474 | err_trap_policer_register: | |
9475 | err_trap_policer_verify: | |
9476 | for (i--; i >= 0; i--) | |
9477 | devlink_trap_policer_unregister(devlink, &policers[i]); | |
9478 | mutex_unlock(&devlink->lock); | |
9479 | return err; | |
9480 | } | |
9481 | EXPORT_SYMBOL_GPL(devlink_trap_policers_register); | |
9482 | ||
9483 | /** | |
9484 | * devlink_trap_policers_unregister - Unregister packet trap policers from devlink. | |
9485 | * @devlink: devlink. | |
9486 | * @policers: Packet trap policers. | |
9487 | * @policers_count: Count of provided packet trap policers. | |
9488 | */ | |
9489 | void | |
9490 | devlink_trap_policers_unregister(struct devlink *devlink, | |
9491 | const struct devlink_trap_policer *policers, | |
9492 | size_t policers_count) | |
9493 | { | |
9494 | int i; | |
9495 | ||
9496 | mutex_lock(&devlink->lock); | |
9497 | for (i = policers_count - 1; i >= 0; i--) | |
9498 | devlink_trap_policer_unregister(devlink, &policers[i]); | |
9499 | mutex_unlock(&devlink->lock); | |
9500 | } | |
9501 | EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister); | |
9502 | ||
ddb6e99e JK |
9503 | static void __devlink_compat_running_version(struct devlink *devlink, |
9504 | char *buf, size_t len) | |
9505 | { | |
9506 | const struct nlattr *nlattr; | |
9507 | struct devlink_info_req req; | |
9508 | struct sk_buff *msg; | |
9509 | int rem, err; | |
9510 | ||
ddb6e99e JK |
9511 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
9512 | if (!msg) | |
9513 | return; | |
9514 | ||
9515 | req.msg = msg; | |
9516 | err = devlink->ops->info_get(devlink, &req, NULL); | |
9517 | if (err) | |
9518 | goto free_msg; | |
9519 | ||
9520 | nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) { | |
9521 | const struct nlattr *kv; | |
9522 | int rem_kv; | |
9523 | ||
9524 | if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING) | |
9525 | continue; | |
9526 | ||
9527 | nla_for_each_nested(kv, nlattr, rem_kv) { | |
9528 | if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE) | |
9529 | continue; | |
9530 | ||
9531 | strlcat(buf, nla_data(kv), len); | |
9532 | strlcat(buf, " ", len); | |
9533 | } | |
9534 | } | |
9535 | free_msg: | |
9536 | nlmsg_free(msg); | |
9537 | } | |
9538 | ||
9539 | void devlink_compat_running_version(struct net_device *dev, | |
9540 | char *buf, size_t len) | |
9541 | { | |
ddb6e99e JK |
9542 | struct devlink *devlink; |
9543 | ||
1b45ff6c JK |
9544 | dev_hold(dev); |
9545 | rtnl_unlock(); | |
9546 | ||
b473b0d2 | 9547 | devlink = netdev_to_devlink(dev); |
be6fe1d8 | 9548 | if (!devlink || !devlink->ops->info_get) |
e0dcd386 | 9549 | goto out; |
b473b0d2 JK |
9550 | |
9551 | mutex_lock(&devlink->lock); | |
9552 | __devlink_compat_running_version(devlink, buf, len); | |
9553 | mutex_unlock(&devlink->lock); | |
1b45ff6c | 9554 | |
e0dcd386 | 9555 | out: |
1b45ff6c JK |
9556 | rtnl_lock(); |
9557 | dev_put(dev); | |
ddb6e99e JK |
9558 | } |
9559 | ||
4eceba17 JK |
9560 | int devlink_compat_flash_update(struct net_device *dev, const char *file_name) |
9561 | { | |
4eceba17 | 9562 | struct devlink *devlink; |
e0dcd386 | 9563 | int ret; |
4eceba17 | 9564 | |
1b45ff6c JK |
9565 | dev_hold(dev); |
9566 | rtnl_unlock(); | |
9567 | ||
b473b0d2 | 9568 | devlink = netdev_to_devlink(dev); |
e0dcd386 JP |
9569 | if (!devlink || !devlink->ops->flash_update) { |
9570 | ret = -EOPNOTSUPP; | |
9571 | goto out; | |
9572 | } | |
4eceba17 | 9573 | |
b473b0d2 JK |
9574 | mutex_lock(&devlink->lock); |
9575 | ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL); | |
9576 | mutex_unlock(&devlink->lock); | |
1b45ff6c | 9577 | |
e0dcd386 | 9578 | out: |
1b45ff6c JK |
9579 | rtnl_lock(); |
9580 | dev_put(dev); | |
9581 | ||
b473b0d2 | 9582 | return ret; |
4eceba17 JK |
9583 | } |
9584 | ||
af3836df JP |
9585 | int devlink_compat_phys_port_name_get(struct net_device *dev, |
9586 | char *name, size_t len) | |
9587 | { | |
9588 | struct devlink_port *devlink_port; | |
9589 | ||
9590 | /* RTNL mutex is held here which ensures that devlink_port | |
9591 | * instance cannot disappear in the middle. No need to take | |
9592 | * any devlink lock as only permanent values are accessed. | |
9593 | */ | |
9594 | ASSERT_RTNL(); | |
9595 | ||
9596 | devlink_port = netdev_to_devlink_port(dev); | |
9597 | if (!devlink_port) | |
9598 | return -EOPNOTSUPP; | |
9599 | ||
9600 | return __devlink_port_phys_port_name_get(devlink_port, name, len); | |
9601 | } | |
9602 | ||
7e1146e8 JP |
9603 | int devlink_compat_switch_id_get(struct net_device *dev, |
9604 | struct netdev_phys_item_id *ppid) | |
9605 | { | |
9606 | struct devlink_port *devlink_port; | |
9607 | ||
043b8413 VB |
9608 | /* Caller must hold RTNL mutex or reference to dev, which ensures that |
9609 | * devlink_port instance cannot disappear in the middle. No need to take | |
7e1146e8 JP |
9610 | * any devlink lock as only permanent values are accessed. |
9611 | */ | |
7e1146e8 | 9612 | devlink_port = netdev_to_devlink_port(dev); |
46737a19 | 9613 | if (!devlink_port || !devlink_port->switch_port) |
7e1146e8 JP |
9614 | return -EOPNOTSUPP; |
9615 | ||
9616 | memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid)); | |
9617 | ||
9618 | return 0; | |
9619 | } | |
9620 | ||
070c63f2 JP |
9621 | static void __net_exit devlink_pernet_pre_exit(struct net *net) |
9622 | { | |
9623 | struct devlink *devlink; | |
9624 | int err; | |
9625 | ||
9626 | /* In case network namespace is getting destroyed, reload | |
9627 | * all devlink instances from this namespace into init_net. | |
9628 | */ | |
9629 | mutex_lock(&devlink_mutex); | |
9630 | list_for_each_entry(devlink, &devlink_list, list) { | |
9631 | if (net_eq(devlink_net(devlink), net)) { | |
9632 | if (WARN_ON(!devlink_reload_supported(devlink))) | |
9633 | continue; | |
9634 | err = devlink_reload(devlink, &init_net, NULL); | |
a0c76345 | 9635 | if (err && err != -EOPNOTSUPP) |
070c63f2 JP |
9636 | pr_warn("Failed to reload devlink instance into init_net\n"); |
9637 | } | |
9638 | } | |
9639 | mutex_unlock(&devlink_mutex); | |
9640 | } | |
9641 | ||
9642 | static struct pernet_operations devlink_pernet_ops __net_initdata = { | |
9643 | .pre_exit = devlink_pernet_pre_exit, | |
9644 | }; | |
9645 | ||
f4b6bcc7 | 9646 | static int __init devlink_init(void) |
bfcd3a46 | 9647 | { |
070c63f2 JP |
9648 | int err; |
9649 | ||
9650 | err = genl_register_family(&devlink_nl_family); | |
9651 | if (err) | |
9652 | goto out; | |
9653 | err = register_pernet_subsys(&devlink_pernet_ops); | |
9654 | ||
9655 | out: | |
9656 | WARN_ON(err); | |
9657 | return err; | |
bfcd3a46 JP |
9658 | } |
9659 | ||
f4b6bcc7 | 9660 | subsys_initcall(devlink_init); |