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bfcd3a46 JP |
1 | /* |
2 | * include/net/devlink.h - Network physical device Netlink interface | |
3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | #ifndef _NET_DEVLINK_H_ | |
12 | #define _NET_DEVLINK_H_ | |
13 | ||
14 | #include <linux/device.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/gfp.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/netdevice.h> | |
19 | #include <net/net_namespace.h> | |
20 | #include <uapi/linux/devlink.h> | |
21 | ||
22 | struct devlink_ops; | |
23 | ||
24 | struct devlink { | |
25 | struct list_head list; | |
26 | struct list_head port_list; | |
bf797471 | 27 | struct list_head sb_list; |
1555d204 AS |
28 | struct list_head dpipe_table_list; |
29 | struct devlink_dpipe_headers *dpipe_headers; | |
bfcd3a46 JP |
30 | const struct devlink_ops *ops; |
31 | struct device *dev; | |
32 | possible_net_t _net; | |
33 | char priv[0] __aligned(NETDEV_ALIGN); | |
34 | }; | |
35 | ||
36 | struct devlink_port { | |
37 | struct list_head list; | |
38 | struct devlink *devlink; | |
39 | unsigned index; | |
40 | bool registered; | |
41 | enum devlink_port_type type; | |
42 | enum devlink_port_type desired_type; | |
43 | void *type_dev; | |
44 | bool split; | |
45 | u32 split_group; | |
46 | }; | |
47 | ||
bf797471 JP |
48 | struct devlink_sb_pool_info { |
49 | enum devlink_sb_pool_type pool_type; | |
50 | u32 size; | |
51 | enum devlink_sb_threshold_type threshold_type; | |
52 | }; | |
53 | ||
1555d204 AS |
54 | /** |
55 | * struct devlink_dpipe_field - dpipe field object | |
56 | * @name: field name | |
57 | * @id: index inside the headers field array | |
58 | * @bitwidth: bitwidth | |
59 | * @mapping_type: mapping type | |
60 | */ | |
61 | struct devlink_dpipe_field { | |
62 | const char *name; | |
63 | unsigned int id; | |
64 | unsigned int bitwidth; | |
65 | enum devlink_dpipe_field_mapping_type mapping_type; | |
66 | }; | |
67 | ||
68 | /** | |
69 | * struct devlink_dpipe_header - dpipe header object | |
70 | * @name: header name | |
71 | * @id: index, global/local detrmined by global bit | |
72 | * @fields: fields | |
73 | * @fields_count: number of fields | |
74 | * @global: indicates if header is shared like most protocol header | |
75 | * or driver specific | |
76 | */ | |
77 | struct devlink_dpipe_header { | |
78 | const char *name; | |
79 | unsigned int id; | |
80 | struct devlink_dpipe_field *fields; | |
81 | unsigned int fields_count; | |
82 | bool global; | |
83 | }; | |
84 | ||
85 | /** | |
86 | * struct devlink_dpipe_match - represents match operation | |
87 | * @type: type of match | |
88 | * @header_index: header index (packets can have several headers of same | |
89 | * type like in case of tunnels) | |
90 | * @header: header | |
91 | * @fieled_id: field index | |
92 | */ | |
93 | struct devlink_dpipe_match { | |
94 | enum devlink_dpipe_match_type type; | |
95 | unsigned int header_index; | |
96 | struct devlink_dpipe_header *header; | |
97 | unsigned int field_id; | |
98 | }; | |
99 | ||
100 | /** | |
101 | * struct devlink_dpipe_action - represents action operation | |
102 | * @type: type of action | |
103 | * @header_index: header index (packets can have several headers of same | |
104 | * type like in case of tunnels) | |
105 | * @header: header | |
106 | * @fieled_id: field index | |
107 | */ | |
108 | struct devlink_dpipe_action { | |
109 | enum devlink_dpipe_action_type type; | |
110 | unsigned int header_index; | |
111 | struct devlink_dpipe_header *header; | |
112 | unsigned int field_id; | |
113 | }; | |
114 | ||
115 | /** | |
116 | * struct devlink_dpipe_value - represents value of match/action | |
117 | * @action: action | |
118 | * @match: match | |
119 | * @mapping_value: in case the field has some mapping this value | |
120 | * specified the mapping value | |
121 | * @mapping_valid: specify if mapping value is valid | |
122 | * @value_size: value size | |
123 | * @value: value | |
124 | * @mask: bit mask | |
125 | */ | |
126 | struct devlink_dpipe_value { | |
127 | union { | |
128 | struct devlink_dpipe_action *action; | |
129 | struct devlink_dpipe_match *match; | |
130 | }; | |
131 | unsigned int mapping_value; | |
132 | bool mapping_valid; | |
133 | unsigned int value_size; | |
134 | void *value; | |
135 | void *mask; | |
136 | }; | |
137 | ||
138 | /** | |
139 | * struct devlink_dpipe_entry - table entry object | |
140 | * @index: index of the entry in the table | |
141 | * @match_values: match values | |
142 | * @matche_values_count: count of matches tuples | |
143 | * @action_values: actions values | |
144 | * @action_values_count: count of actions values | |
145 | * @counter: value of counter | |
146 | * @counter_valid: Specify if value is valid from hardware | |
147 | */ | |
148 | struct devlink_dpipe_entry { | |
149 | u64 index; | |
150 | struct devlink_dpipe_value *match_values; | |
151 | unsigned int match_values_count; | |
152 | struct devlink_dpipe_value *action_values; | |
153 | unsigned int action_values_count; | |
154 | u64 counter; | |
155 | bool counter_valid; | |
156 | }; | |
157 | ||
158 | /** | |
159 | * struct devlink_dpipe_dump_ctx - context provided to driver in order | |
160 | * to dump | |
161 | * @info: info | |
162 | * @cmd: devlink command | |
163 | * @skb: skb | |
164 | * @nest: top attribute | |
165 | * @hdr: hdr | |
166 | */ | |
167 | struct devlink_dpipe_dump_ctx { | |
168 | struct genl_info *info; | |
169 | enum devlink_command cmd; | |
170 | struct sk_buff *skb; | |
171 | struct nlattr *nest; | |
172 | void *hdr; | |
173 | }; | |
174 | ||
175 | struct devlink_dpipe_table_ops; | |
176 | ||
177 | /** | |
178 | * struct devlink_dpipe_table - table object | |
179 | * @priv: private | |
180 | * @name: table name | |
181 | * @size: maximum number of entries | |
182 | * @counters_enabled: indicates if counters are active | |
183 | * @counter_control_extern: indicates if counter control is in dpipe or | |
184 | * external tool | |
185 | * @table_ops: table operations | |
186 | * @rcu: rcu | |
187 | */ | |
188 | struct devlink_dpipe_table { | |
189 | void *priv; | |
190 | struct list_head list; | |
191 | const char *name; | |
192 | u64 size; | |
193 | bool counters_enabled; | |
194 | bool counter_control_extern; | |
195 | struct devlink_dpipe_table_ops *table_ops; | |
196 | struct rcu_head rcu; | |
197 | }; | |
198 | ||
199 | /** | |
200 | * struct devlink_dpipe_table_ops - dpipe_table ops | |
201 | * @actions_dump - dumps all tables actions | |
202 | * @matches_dump - dumps all tables matches | |
203 | * @entries_dump - dumps all active entries in the table | |
204 | * @counters_set_update - when changing the counter status hardware sync | |
205 | * maybe needed to allocate/free counter related | |
206 | * resources | |
207 | */ | |
208 | struct devlink_dpipe_table_ops { | |
209 | int (*actions_dump)(void *priv, struct sk_buff *skb); | |
210 | int (*matches_dump)(void *priv, struct sk_buff *skb); | |
211 | int (*entries_dump)(void *priv, bool counters_enabled, | |
212 | struct devlink_dpipe_dump_ctx *dump_ctx); | |
213 | int (*counters_set_update)(void *priv, bool enable); | |
214 | }; | |
215 | ||
216 | /** | |
217 | * struct devlink_dpipe_headers - dpipe headers | |
218 | * @headers - header array can be shared (global bit) or driver specific | |
219 | * @headers_count - count of headers | |
220 | */ | |
221 | struct devlink_dpipe_headers { | |
222 | struct devlink_dpipe_header **headers; | |
223 | unsigned int headers_count; | |
224 | }; | |
225 | ||
bfcd3a46 | 226 | struct devlink_ops { |
bfcd3a46 JP |
227 | int (*port_type_set)(struct devlink_port *devlink_port, |
228 | enum devlink_port_type port_type); | |
229 | int (*port_split)(struct devlink *devlink, unsigned int port_index, | |
230 | unsigned int count); | |
231 | int (*port_unsplit)(struct devlink *devlink, unsigned int port_index); | |
bf797471 JP |
232 | int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index, |
233 | u16 pool_index, | |
234 | struct devlink_sb_pool_info *pool_info); | |
235 | int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index, | |
236 | u16 pool_index, u32 size, | |
237 | enum devlink_sb_threshold_type threshold_type); | |
238 | int (*sb_port_pool_get)(struct devlink_port *devlink_port, | |
239 | unsigned int sb_index, u16 pool_index, | |
240 | u32 *p_threshold); | |
241 | int (*sb_port_pool_set)(struct devlink_port *devlink_port, | |
242 | unsigned int sb_index, u16 pool_index, | |
243 | u32 threshold); | |
244 | int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port, | |
245 | unsigned int sb_index, | |
246 | u16 tc_index, | |
247 | enum devlink_sb_pool_type pool_type, | |
248 | u16 *p_pool_index, u32 *p_threshold); | |
249 | int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port, | |
250 | unsigned int sb_index, | |
251 | u16 tc_index, | |
252 | enum devlink_sb_pool_type pool_type, | |
253 | u16 pool_index, u32 threshold); | |
df38dafd JP |
254 | int (*sb_occ_snapshot)(struct devlink *devlink, |
255 | unsigned int sb_index); | |
256 | int (*sb_occ_max_clear)(struct devlink *devlink, | |
257 | unsigned int sb_index); | |
258 | int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port, | |
259 | unsigned int sb_index, u16 pool_index, | |
260 | u32 *p_cur, u32 *p_max); | |
261 | int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port, | |
262 | unsigned int sb_index, | |
263 | u16 tc_index, | |
264 | enum devlink_sb_pool_type pool_type, | |
265 | u32 *p_cur, u32 *p_max); | |
08f4b591 OG |
266 | |
267 | int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode); | |
268 | int (*eswitch_mode_set)(struct devlink *devlink, u16 mode); | |
59bfde01 RD |
269 | int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode); |
270 | int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode); | |
f43e9b06 RD |
271 | int (*eswitch_encap_mode_get)(struct devlink *devlink, u8 *p_encap_mode); |
272 | int (*eswitch_encap_mode_set)(struct devlink *devlink, u8 encap_mode); | |
bfcd3a46 JP |
273 | }; |
274 | ||
275 | static inline void *devlink_priv(struct devlink *devlink) | |
276 | { | |
277 | BUG_ON(!devlink); | |
278 | return &devlink->priv; | |
279 | } | |
280 | ||
281 | static inline struct devlink *priv_to_devlink(void *priv) | |
282 | { | |
283 | BUG_ON(!priv); | |
284 | return container_of(priv, struct devlink, priv); | |
285 | } | |
286 | ||
287 | struct ib_device; | |
288 | ||
289 | #if IS_ENABLED(CONFIG_NET_DEVLINK) | |
290 | ||
291 | struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size); | |
292 | int devlink_register(struct devlink *devlink, struct device *dev); | |
293 | void devlink_unregister(struct devlink *devlink); | |
294 | void devlink_free(struct devlink *devlink); | |
295 | int devlink_port_register(struct devlink *devlink, | |
296 | struct devlink_port *devlink_port, | |
297 | unsigned int port_index); | |
298 | void devlink_port_unregister(struct devlink_port *devlink_port); | |
299 | void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
300 | struct net_device *netdev); | |
301 | void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
302 | struct ib_device *ibdev); | |
303 | void devlink_port_type_clear(struct devlink_port *devlink_port); | |
304 | void devlink_port_split_set(struct devlink_port *devlink_port, | |
305 | u32 split_group); | |
bf797471 JP |
306 | int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, |
307 | u32 size, u16 ingress_pools_count, | |
308 | u16 egress_pools_count, u16 ingress_tc_count, | |
309 | u16 egress_tc_count); | |
310 | void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index); | |
1555d204 AS |
311 | int devlink_dpipe_table_register(struct devlink *devlink, |
312 | const char *table_name, | |
313 | struct devlink_dpipe_table_ops *table_ops, | |
314 | void *priv, u64 size, | |
315 | bool counter_control_extern); | |
316 | void devlink_dpipe_table_unregister(struct devlink *devlink, | |
317 | const char *table_name); | |
318 | int devlink_dpipe_headers_register(struct devlink *devlink, | |
319 | struct devlink_dpipe_headers *dpipe_headers); | |
320 | void devlink_dpipe_headers_unregister(struct devlink *devlink); | |
321 | bool devlink_dpipe_table_counter_enabled(struct devlink *devlink, | |
322 | const char *table_name); | |
323 | int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx); | |
324 | int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx, | |
325 | struct devlink_dpipe_entry *entry); | |
326 | int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx); | |
327 | int devlink_dpipe_action_put(struct sk_buff *skb, | |
328 | struct devlink_dpipe_action *action); | |
329 | int devlink_dpipe_match_put(struct sk_buff *skb, | |
330 | struct devlink_dpipe_match *match); | |
11770091 | 331 | extern struct devlink_dpipe_header devlink_dpipe_header_ethernet; |
bfcd3a46 JP |
332 | |
333 | #else | |
334 | ||
335 | static inline struct devlink *devlink_alloc(const struct devlink_ops *ops, | |
336 | size_t priv_size) | |
337 | { | |
338 | return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL); | |
339 | } | |
340 | ||
341 | static inline int devlink_register(struct devlink *devlink, struct device *dev) | |
342 | { | |
343 | return 0; | |
344 | } | |
345 | ||
346 | static inline void devlink_unregister(struct devlink *devlink) | |
347 | { | |
348 | } | |
349 | ||
350 | static inline void devlink_free(struct devlink *devlink) | |
351 | { | |
352 | kfree(devlink); | |
353 | } | |
354 | ||
355 | static inline int devlink_port_register(struct devlink *devlink, | |
356 | struct devlink_port *devlink_port, | |
357 | unsigned int port_index) | |
358 | { | |
359 | return 0; | |
360 | } | |
361 | ||
362 | static inline void devlink_port_unregister(struct devlink_port *devlink_port) | |
363 | { | |
364 | } | |
365 | ||
366 | static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
367 | struct net_device *netdev) | |
368 | { | |
369 | } | |
370 | ||
371 | static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
372 | struct ib_device *ibdev) | |
373 | { | |
374 | } | |
375 | ||
376 | static inline void devlink_port_type_clear(struct devlink_port *devlink_port) | |
377 | { | |
378 | } | |
379 | ||
380 | static inline void devlink_port_split_set(struct devlink_port *devlink_port, | |
381 | u32 split_group) | |
382 | { | |
383 | } | |
384 | ||
bf797471 JP |
385 | static inline int devlink_sb_register(struct devlink *devlink, |
386 | unsigned int sb_index, u32 size, | |
387 | u16 ingress_pools_count, | |
de33efd0 JP |
388 | u16 egress_pools_count, |
389 | u16 ingress_tc_count, | |
390 | u16 egress_tc_count) | |
bf797471 JP |
391 | { |
392 | return 0; | |
393 | } | |
394 | ||
395 | static inline void devlink_sb_unregister(struct devlink *devlink, | |
396 | unsigned int sb_index) | |
397 | { | |
398 | } | |
399 | ||
1555d204 AS |
400 | static inline int |
401 | devlink_dpipe_table_register(struct devlink *devlink, | |
402 | const char *table_name, | |
403 | struct devlink_dpipe_table_ops *table_ops, | |
404 | void *priv, u64 size, | |
405 | bool counter_control_extern) | |
406 | { | |
407 | return 0; | |
408 | } | |
409 | ||
410 | static inline void devlink_dpipe_table_unregister(struct devlink *devlink, | |
411 | const char *table_name) | |
412 | { | |
413 | } | |
414 | ||
415 | static inline int devlink_dpipe_headers_register(struct devlink *devlink, | |
416 | struct devlink_dpipe_headers * | |
417 | dpipe_headers) | |
418 | { | |
419 | return 0; | |
420 | } | |
421 | ||
422 | static inline void devlink_dpipe_headers_unregister(struct devlink *devlink) | |
423 | { | |
424 | } | |
425 | ||
426 | static inline bool devlink_dpipe_table_counter_enabled(struct devlink *devlink, | |
427 | const char *table_name) | |
428 | { | |
429 | return false; | |
430 | } | |
431 | ||
432 | static inline int | |
433 | devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx) | |
434 | { | |
435 | return 0; | |
436 | } | |
437 | ||
438 | static inline int | |
439 | devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx, | |
440 | struct devlink_dpipe_entry *entry) | |
441 | { | |
442 | return 0; | |
443 | } | |
444 | ||
445 | static inline int | |
446 | devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx) | |
447 | { | |
448 | return 0; | |
449 | } | |
450 | ||
451 | static inline int | |
452 | devlink_dpipe_action_put(struct sk_buff *skb, | |
453 | struct devlink_dpipe_action *action) | |
454 | { | |
455 | return 0; | |
456 | } | |
457 | ||
458 | static inline int | |
459 | devlink_dpipe_match_put(struct sk_buff *skb, | |
460 | struct devlink_dpipe_match *match) | |
461 | { | |
462 | return 0; | |
463 | } | |
464 | ||
bfcd3a46 JP |
465 | #endif |
466 | ||
467 | #endif /* _NET_DEVLINK_H_ */ |