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1 | // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB | |
2 | /* | |
3 | * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. | |
4 | */ | |
5 | ||
6 | #include <rdma/ib_user_verbs.h> | |
7 | #include <rdma/ib_verbs.h> | |
8 | #include <rdma/uverbs_types.h> | |
9 | #include <rdma/uverbs_ioctl.h> | |
10 | #include <rdma/mlx5_user_ioctl_cmds.h> | |
11 | #include <rdma/mlx5_user_ioctl_verbs.h> | |
12 | #include <rdma/ib_umem.h> | |
13 | #include <rdma/uverbs_std_types.h> | |
14 | #include <linux/mlx5/driver.h> | |
15 | #include <linux/mlx5/fs.h> | |
16 | #include "mlx5_ib.h" | |
17 | #include <linux/xarray.h> | |
18 | ||
19 | #define UVERBS_MODULE_NAME mlx5_ib | |
20 | #include <rdma/uverbs_named_ioctl.h> | |
21 | ||
22 | static void dispatch_event_fd(struct list_head *fd_list, const void *data); | |
23 | ||
24 | enum devx_obj_flags { | |
25 | DEVX_OBJ_FLAGS_INDIRECT_MKEY = 1 << 0, | |
26 | DEVX_OBJ_FLAGS_DCT = 1 << 1, | |
27 | DEVX_OBJ_FLAGS_CQ = 1 << 2, | |
28 | }; | |
29 | ||
30 | struct devx_async_data { | |
31 | struct mlx5_ib_dev *mdev; | |
32 | struct list_head list; | |
33 | struct devx_async_cmd_event_file *ev_file; | |
34 | struct mlx5_async_work cb_work; | |
35 | u16 cmd_out_len; | |
36 | /* must be last field in this structure */ | |
37 | struct mlx5_ib_uapi_devx_async_cmd_hdr hdr; | |
38 | }; | |
39 | ||
40 | struct devx_async_event_data { | |
41 | struct list_head list; /* headed in ev_file->event_list */ | |
42 | struct mlx5_ib_uapi_devx_async_event_hdr hdr; | |
43 | }; | |
44 | ||
45 | /* first level XA value data structure */ | |
46 | struct devx_event { | |
47 | struct xarray object_ids; /* second XA level, Key = object id */ | |
48 | struct list_head unaffiliated_list; | |
49 | }; | |
50 | ||
51 | /* second level XA value data structure */ | |
52 | struct devx_obj_event { | |
53 | struct rcu_head rcu; | |
54 | struct list_head obj_sub_list; | |
55 | }; | |
56 | ||
57 | struct devx_event_subscription { | |
58 | struct list_head file_list; /* headed in ev_file-> | |
59 | * subscribed_events_list | |
60 | */ | |
61 | struct list_head xa_list; /* headed in devx_event->unaffiliated_list or | |
62 | * devx_obj_event->obj_sub_list | |
63 | */ | |
64 | struct list_head obj_list; /* headed in devx_object */ | |
65 | struct list_head event_list; /* headed in ev_file->event_list or in | |
66 | * temp list via subscription | |
67 | */ | |
68 | ||
69 | u8 is_cleaned:1; | |
70 | u32 xa_key_level1; | |
71 | u32 xa_key_level2; | |
72 | struct rcu_head rcu; | |
73 | u64 cookie; | |
74 | struct devx_async_event_file *ev_file; | |
75 | struct eventfd_ctx *eventfd; | |
76 | }; | |
77 | ||
78 | struct devx_async_event_file { | |
79 | struct ib_uobject uobj; | |
80 | /* Head of events that are subscribed to this FD */ | |
81 | struct list_head subscribed_events_list; | |
82 | spinlock_t lock; | |
83 | wait_queue_head_t poll_wait; | |
84 | struct list_head event_list; | |
85 | struct mlx5_ib_dev *dev; | |
86 | u8 omit_data:1; | |
87 | u8 is_overflow_err:1; | |
88 | u8 is_destroyed:1; | |
89 | }; | |
90 | ||
91 | #define MLX5_MAX_DESTROY_INBOX_SIZE_DW MLX5_ST_SZ_DW(delete_fte_in) | |
92 | struct devx_obj { | |
93 | struct mlx5_ib_dev *ib_dev; | |
94 | u64 obj_id; | |
95 | u32 dinlen; /* destroy inbox length */ | |
96 | u32 dinbox[MLX5_MAX_DESTROY_INBOX_SIZE_DW]; | |
97 | u32 flags; | |
98 | union { | |
99 | struct mlx5_ib_devx_mr devx_mr; | |
100 | struct mlx5_core_dct core_dct; | |
101 | struct mlx5_core_cq core_cq; | |
102 | u32 flow_counter_bulk_size; | |
103 | }; | |
104 | struct list_head event_sub; /* holds devx_event_subscription entries */ | |
105 | }; | |
106 | ||
107 | struct devx_umem { | |
108 | struct mlx5_core_dev *mdev; | |
109 | struct ib_umem *umem; | |
110 | u32 page_offset; | |
111 | int page_shift; | |
112 | int ncont; | |
113 | u32 dinlen; | |
114 | u32 dinbox[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)]; | |
115 | }; | |
116 | ||
117 | struct devx_umem_reg_cmd { | |
118 | void *in; | |
119 | u32 inlen; | |
120 | u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; | |
121 | }; | |
122 | ||
123 | static struct mlx5_ib_ucontext * | |
124 | devx_ufile2uctx(const struct uverbs_attr_bundle *attrs) | |
125 | { | |
126 | return to_mucontext(ib_uverbs_get_ucontext(attrs)); | |
127 | } | |
128 | ||
129 | int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user) | |
130 | { | |
131 | u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {0}; | |
132 | u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0}; | |
133 | void *uctx; | |
134 | int err; | |
135 | u16 uid; | |
136 | u32 cap = 0; | |
137 | ||
138 | /* 0 means not supported */ | |
139 | if (!MLX5_CAP_GEN(dev->mdev, log_max_uctx)) | |
140 | return -EINVAL; | |
141 | ||
142 | uctx = MLX5_ADDR_OF(create_uctx_in, in, uctx); | |
143 | if (is_user && capable(CAP_NET_RAW) && | |
144 | (MLX5_CAP_GEN(dev->mdev, uctx_cap) & MLX5_UCTX_CAP_RAW_TX)) | |
145 | cap |= MLX5_UCTX_CAP_RAW_TX; | |
146 | if (is_user && capable(CAP_SYS_RAWIO) && | |
147 | (MLX5_CAP_GEN(dev->mdev, uctx_cap) & | |
148 | MLX5_UCTX_CAP_INTERNAL_DEV_RES)) | |
149 | cap |= MLX5_UCTX_CAP_INTERNAL_DEV_RES; | |
150 | ||
151 | MLX5_SET(create_uctx_in, in, opcode, MLX5_CMD_OP_CREATE_UCTX); | |
152 | MLX5_SET(uctx, uctx, cap, cap); | |
153 | ||
154 | err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); | |
155 | if (err) | |
156 | return err; | |
157 | ||
158 | uid = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id); | |
159 | return uid; | |
160 | } | |
161 | ||
162 | void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) | |
163 | { | |
164 | u32 in[MLX5_ST_SZ_DW(destroy_uctx_in)] = {0}; | |
165 | u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0}; | |
166 | ||
167 | MLX5_SET(destroy_uctx_in, in, opcode, MLX5_CMD_OP_DESTROY_UCTX); | |
168 | MLX5_SET(destroy_uctx_in, in, uid, uid); | |
169 | ||
170 | mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); | |
171 | } | |
172 | ||
173 | bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type) | |
174 | { | |
175 | struct devx_obj *devx_obj = obj; | |
176 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode); | |
177 | ||
178 | switch (opcode) { | |
179 | case MLX5_CMD_OP_DESTROY_TIR: | |
180 | *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR; | |
181 | *dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, | |
182 | obj_id); | |
183 | return true; | |
184 | ||
185 | case MLX5_CMD_OP_DESTROY_FLOW_TABLE: | |
186 | *dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; | |
187 | *dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox, | |
188 | table_id); | |
189 | return true; | |
190 | default: | |
191 | return false; | |
192 | } | |
193 | } | |
194 | ||
195 | bool mlx5_ib_devx_is_flow_counter(void *obj, u32 offset, u32 *counter_id) | |
196 | { | |
197 | struct devx_obj *devx_obj = obj; | |
198 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode); | |
199 | ||
200 | if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) { | |
201 | ||
202 | if (offset && offset >= devx_obj->flow_counter_bulk_size) | |
203 | return false; | |
204 | ||
205 | *counter_id = MLX5_GET(dealloc_flow_counter_in, | |
206 | devx_obj->dinbox, | |
207 | flow_counter_id); | |
208 | *counter_id += offset; | |
209 | return true; | |
210 | } | |
211 | ||
212 | return false; | |
213 | } | |
214 | ||
215 | static bool is_legacy_unaffiliated_event_num(u16 event_num) | |
216 | { | |
217 | switch (event_num) { | |
218 | case MLX5_EVENT_TYPE_PORT_CHANGE: | |
219 | return true; | |
220 | default: | |
221 | return false; | |
222 | } | |
223 | } | |
224 | ||
225 | static bool is_legacy_obj_event_num(u16 event_num) | |
226 | { | |
227 | switch (event_num) { | |
228 | case MLX5_EVENT_TYPE_PATH_MIG: | |
229 | case MLX5_EVENT_TYPE_COMM_EST: | |
230 | case MLX5_EVENT_TYPE_SQ_DRAINED: | |
231 | case MLX5_EVENT_TYPE_SRQ_LAST_WQE: | |
232 | case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: | |
233 | case MLX5_EVENT_TYPE_CQ_ERROR: | |
234 | case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: | |
235 | case MLX5_EVENT_TYPE_PATH_MIG_FAILED: | |
236 | case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
237 | case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: | |
238 | case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: | |
239 | case MLX5_EVENT_TYPE_DCT_DRAINED: | |
240 | case MLX5_EVENT_TYPE_COMP: | |
241 | case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: | |
242 | case MLX5_EVENT_TYPE_XRQ_ERROR: | |
243 | return true; | |
244 | default: | |
245 | return false; | |
246 | } | |
247 | } | |
248 | ||
249 | static u16 get_legacy_obj_type(u16 opcode) | |
250 | { | |
251 | switch (opcode) { | |
252 | case MLX5_CMD_OP_CREATE_RQ: | |
253 | return MLX5_EVENT_QUEUE_TYPE_RQ; | |
254 | case MLX5_CMD_OP_CREATE_QP: | |
255 | return MLX5_EVENT_QUEUE_TYPE_QP; | |
256 | case MLX5_CMD_OP_CREATE_SQ: | |
257 | return MLX5_EVENT_QUEUE_TYPE_SQ; | |
258 | case MLX5_CMD_OP_CREATE_DCT: | |
259 | return MLX5_EVENT_QUEUE_TYPE_DCT; | |
260 | default: | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | ||
265 | static u16 get_dec_obj_type(struct devx_obj *obj, u16 event_num) | |
266 | { | |
267 | u16 opcode; | |
268 | ||
269 | opcode = (obj->obj_id >> 32) & 0xffff; | |
270 | ||
271 | if (is_legacy_obj_event_num(event_num)) | |
272 | return get_legacy_obj_type(opcode); | |
273 | ||
274 | switch (opcode) { | |
275 | case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: | |
276 | return (obj->obj_id >> 48); | |
277 | case MLX5_CMD_OP_CREATE_RQ: | |
278 | return MLX5_OBJ_TYPE_RQ; | |
279 | case MLX5_CMD_OP_CREATE_QP: | |
280 | return MLX5_OBJ_TYPE_QP; | |
281 | case MLX5_CMD_OP_CREATE_SQ: | |
282 | return MLX5_OBJ_TYPE_SQ; | |
283 | case MLX5_CMD_OP_CREATE_DCT: | |
284 | return MLX5_OBJ_TYPE_DCT; | |
285 | case MLX5_CMD_OP_CREATE_TIR: | |
286 | return MLX5_OBJ_TYPE_TIR; | |
287 | case MLX5_CMD_OP_CREATE_TIS: | |
288 | return MLX5_OBJ_TYPE_TIS; | |
289 | case MLX5_CMD_OP_CREATE_PSV: | |
290 | return MLX5_OBJ_TYPE_PSV; | |
291 | case MLX5_OBJ_TYPE_MKEY: | |
292 | return MLX5_OBJ_TYPE_MKEY; | |
293 | case MLX5_CMD_OP_CREATE_RMP: | |
294 | return MLX5_OBJ_TYPE_RMP; | |
295 | case MLX5_CMD_OP_CREATE_XRC_SRQ: | |
296 | return MLX5_OBJ_TYPE_XRC_SRQ; | |
297 | case MLX5_CMD_OP_CREATE_XRQ: | |
298 | return MLX5_OBJ_TYPE_XRQ; | |
299 | case MLX5_CMD_OP_CREATE_RQT: | |
300 | return MLX5_OBJ_TYPE_RQT; | |
301 | case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: | |
302 | return MLX5_OBJ_TYPE_FLOW_COUNTER; | |
303 | case MLX5_CMD_OP_CREATE_CQ: | |
304 | return MLX5_OBJ_TYPE_CQ; | |
305 | default: | |
306 | return 0; | |
307 | } | |
308 | } | |
309 | ||
310 | static u16 get_event_obj_type(unsigned long event_type, struct mlx5_eqe *eqe) | |
311 | { | |
312 | switch (event_type) { | |
313 | case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: | |
314 | case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: | |
315 | case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
316 | case MLX5_EVENT_TYPE_SRQ_LAST_WQE: | |
317 | case MLX5_EVENT_TYPE_PATH_MIG: | |
318 | case MLX5_EVENT_TYPE_PATH_MIG_FAILED: | |
319 | case MLX5_EVENT_TYPE_COMM_EST: | |
320 | case MLX5_EVENT_TYPE_SQ_DRAINED: | |
321 | case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: | |
322 | case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: | |
323 | return eqe->data.qp_srq.type; | |
324 | case MLX5_EVENT_TYPE_CQ_ERROR: | |
325 | case MLX5_EVENT_TYPE_XRQ_ERROR: | |
326 | return 0; | |
327 | case MLX5_EVENT_TYPE_DCT_DRAINED: | |
328 | case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: | |
329 | return MLX5_EVENT_QUEUE_TYPE_DCT; | |
330 | default: | |
331 | return MLX5_GET(affiliated_event_header, &eqe->data, obj_type); | |
332 | } | |
333 | } | |
334 | ||
335 | static u32 get_dec_obj_id(u64 obj_id) | |
336 | { | |
337 | return (obj_id & 0xffffffff); | |
338 | } | |
339 | ||
340 | /* | |
341 | * As the obj_id in the firmware is not globally unique the object type | |
342 | * must be considered upon checking for a valid object id. | |
343 | * For that the opcode of the creator command is encoded as part of the obj_id. | |
344 | */ | |
345 | static u64 get_enc_obj_id(u32 opcode, u32 obj_id) | |
346 | { | |
347 | return ((u64)opcode << 32) | obj_id; | |
348 | } | |
349 | ||
350 | static u64 devx_get_obj_id(const void *in) | |
351 | { | |
352 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
353 | u64 obj_id; | |
354 | ||
355 | switch (opcode) { | |
356 | case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT: | |
357 | case MLX5_CMD_OP_QUERY_GENERAL_OBJECT: | |
358 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_GENERAL_OBJECT | | |
359 | MLX5_GET(general_obj_in_cmd_hdr, in, | |
360 | obj_type) << 16, | |
361 | MLX5_GET(general_obj_in_cmd_hdr, in, | |
362 | obj_id)); | |
363 | break; | |
364 | case MLX5_CMD_OP_QUERY_MKEY: | |
365 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_MKEY, | |
366 | MLX5_GET(query_mkey_in, in, | |
367 | mkey_index)); | |
368 | break; | |
369 | case MLX5_CMD_OP_QUERY_CQ: | |
370 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, | |
371 | MLX5_GET(query_cq_in, in, cqn)); | |
372 | break; | |
373 | case MLX5_CMD_OP_MODIFY_CQ: | |
374 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, | |
375 | MLX5_GET(modify_cq_in, in, cqn)); | |
376 | break; | |
377 | case MLX5_CMD_OP_QUERY_SQ: | |
378 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, | |
379 | MLX5_GET(query_sq_in, in, sqn)); | |
380 | break; | |
381 | case MLX5_CMD_OP_MODIFY_SQ: | |
382 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, | |
383 | MLX5_GET(modify_sq_in, in, sqn)); | |
384 | break; | |
385 | case MLX5_CMD_OP_QUERY_RQ: | |
386 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, | |
387 | MLX5_GET(query_rq_in, in, rqn)); | |
388 | break; | |
389 | case MLX5_CMD_OP_MODIFY_RQ: | |
390 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, | |
391 | MLX5_GET(modify_rq_in, in, rqn)); | |
392 | break; | |
393 | case MLX5_CMD_OP_QUERY_RMP: | |
394 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP, | |
395 | MLX5_GET(query_rmp_in, in, rmpn)); | |
396 | break; | |
397 | case MLX5_CMD_OP_MODIFY_RMP: | |
398 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP, | |
399 | MLX5_GET(modify_rmp_in, in, rmpn)); | |
400 | break; | |
401 | case MLX5_CMD_OP_QUERY_RQT: | |
402 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, | |
403 | MLX5_GET(query_rqt_in, in, rqtn)); | |
404 | break; | |
405 | case MLX5_CMD_OP_MODIFY_RQT: | |
406 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, | |
407 | MLX5_GET(modify_rqt_in, in, rqtn)); | |
408 | break; | |
409 | case MLX5_CMD_OP_QUERY_TIR: | |
410 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, | |
411 | MLX5_GET(query_tir_in, in, tirn)); | |
412 | break; | |
413 | case MLX5_CMD_OP_MODIFY_TIR: | |
414 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, | |
415 | MLX5_GET(modify_tir_in, in, tirn)); | |
416 | break; | |
417 | case MLX5_CMD_OP_QUERY_TIS: | |
418 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, | |
419 | MLX5_GET(query_tis_in, in, tisn)); | |
420 | break; | |
421 | case MLX5_CMD_OP_MODIFY_TIS: | |
422 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, | |
423 | MLX5_GET(modify_tis_in, in, tisn)); | |
424 | break; | |
425 | case MLX5_CMD_OP_QUERY_FLOW_TABLE: | |
426 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE, | |
427 | MLX5_GET(query_flow_table_in, in, | |
428 | table_id)); | |
429 | break; | |
430 | case MLX5_CMD_OP_MODIFY_FLOW_TABLE: | |
431 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE, | |
432 | MLX5_GET(modify_flow_table_in, in, | |
433 | table_id)); | |
434 | break; | |
435 | case MLX5_CMD_OP_QUERY_FLOW_GROUP: | |
436 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_GROUP, | |
437 | MLX5_GET(query_flow_group_in, in, | |
438 | group_id)); | |
439 | break; | |
440 | case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: | |
441 | obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY, | |
442 | MLX5_GET(query_fte_in, in, | |
443 | flow_index)); | |
444 | break; | |
445 | case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: | |
446 | obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY, | |
447 | MLX5_GET(set_fte_in, in, flow_index)); | |
448 | break; | |
449 | case MLX5_CMD_OP_QUERY_Q_COUNTER: | |
450 | obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_Q_COUNTER, | |
451 | MLX5_GET(query_q_counter_in, in, | |
452 | counter_set_id)); | |
453 | break; | |
454 | case MLX5_CMD_OP_QUERY_FLOW_COUNTER: | |
455 | obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_FLOW_COUNTER, | |
456 | MLX5_GET(query_flow_counter_in, in, | |
457 | flow_counter_id)); | |
458 | break; | |
459 | case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT: | |
460 | obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT, | |
461 | MLX5_GET(general_obj_in_cmd_hdr, in, | |
462 | obj_id)); | |
463 | break; | |
464 | case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: | |
465 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT, | |
466 | MLX5_GET(query_scheduling_element_in, | |
467 | in, scheduling_element_id)); | |
468 | break; | |
469 | case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: | |
470 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT, | |
471 | MLX5_GET(modify_scheduling_element_in, | |
472 | in, scheduling_element_id)); | |
473 | break; | |
474 | case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: | |
475 | obj_id = get_enc_obj_id(MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT, | |
476 | MLX5_GET(add_vxlan_udp_dport_in, in, | |
477 | vxlan_udp_port)); | |
478 | break; | |
479 | case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: | |
480 | obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY, | |
481 | MLX5_GET(query_l2_table_entry_in, in, | |
482 | table_index)); | |
483 | break; | |
484 | case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: | |
485 | obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY, | |
486 | MLX5_GET(set_l2_table_entry_in, in, | |
487 | table_index)); | |
488 | break; | |
489 | case MLX5_CMD_OP_QUERY_QP: | |
490 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
491 | MLX5_GET(query_qp_in, in, qpn)); | |
492 | break; | |
493 | case MLX5_CMD_OP_RST2INIT_QP: | |
494 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
495 | MLX5_GET(rst2init_qp_in, in, qpn)); | |
496 | break; | |
497 | case MLX5_CMD_OP_INIT2RTR_QP: | |
498 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
499 | MLX5_GET(init2rtr_qp_in, in, qpn)); | |
500 | break; | |
501 | case MLX5_CMD_OP_RTR2RTS_QP: | |
502 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
503 | MLX5_GET(rtr2rts_qp_in, in, qpn)); | |
504 | break; | |
505 | case MLX5_CMD_OP_RTS2RTS_QP: | |
506 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
507 | MLX5_GET(rts2rts_qp_in, in, qpn)); | |
508 | break; | |
509 | case MLX5_CMD_OP_SQERR2RTS_QP: | |
510 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
511 | MLX5_GET(sqerr2rts_qp_in, in, qpn)); | |
512 | break; | |
513 | case MLX5_CMD_OP_2ERR_QP: | |
514 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
515 | MLX5_GET(qp_2err_in, in, qpn)); | |
516 | break; | |
517 | case MLX5_CMD_OP_2RST_QP: | |
518 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
519 | MLX5_GET(qp_2rst_in, in, qpn)); | |
520 | break; | |
521 | case MLX5_CMD_OP_QUERY_DCT: | |
522 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, | |
523 | MLX5_GET(query_dct_in, in, dctn)); | |
524 | break; | |
525 | case MLX5_CMD_OP_QUERY_XRQ: | |
526 | case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY: | |
527 | case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS: | |
528 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ, | |
529 | MLX5_GET(query_xrq_in, in, xrqn)); | |
530 | break; | |
531 | case MLX5_CMD_OP_QUERY_XRC_SRQ: | |
532 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ, | |
533 | MLX5_GET(query_xrc_srq_in, in, | |
534 | xrc_srqn)); | |
535 | break; | |
536 | case MLX5_CMD_OP_ARM_XRC_SRQ: | |
537 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ, | |
538 | MLX5_GET(arm_xrc_srq_in, in, xrc_srqn)); | |
539 | break; | |
540 | case MLX5_CMD_OP_QUERY_SRQ: | |
541 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SRQ, | |
542 | MLX5_GET(query_srq_in, in, srqn)); | |
543 | break; | |
544 | case MLX5_CMD_OP_ARM_RQ: | |
545 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, | |
546 | MLX5_GET(arm_rq_in, in, srq_number)); | |
547 | break; | |
548 | case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: | |
549 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, | |
550 | MLX5_GET(drain_dct_in, in, dctn)); | |
551 | break; | |
552 | case MLX5_CMD_OP_ARM_XRQ: | |
553 | case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY: | |
554 | case MLX5_CMD_OP_RELEASE_XRQ_ERROR: | |
555 | case MLX5_CMD_OP_MODIFY_XRQ: | |
556 | obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ, | |
557 | MLX5_GET(arm_xrq_in, in, xrqn)); | |
558 | break; | |
559 | case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT: | |
560 | obj_id = get_enc_obj_id | |
561 | (MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT, | |
562 | MLX5_GET(query_packet_reformat_context_in, | |
563 | in, packet_reformat_id)); | |
564 | break; | |
565 | default: | |
566 | obj_id = 0; | |
567 | } | |
568 | ||
569 | return obj_id; | |
570 | } | |
571 | ||
572 | static bool devx_is_valid_obj_id(struct uverbs_attr_bundle *attrs, | |
573 | struct ib_uobject *uobj, const void *in) | |
574 | { | |
575 | struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata); | |
576 | u64 obj_id = devx_get_obj_id(in); | |
577 | ||
578 | if (!obj_id) | |
579 | return false; | |
580 | ||
581 | switch (uobj_get_object_id(uobj)) { | |
582 | case UVERBS_OBJECT_CQ: | |
583 | return get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, | |
584 | to_mcq(uobj->object)->mcq.cqn) == | |
585 | obj_id; | |
586 | ||
587 | case UVERBS_OBJECT_SRQ: | |
588 | { | |
589 | struct mlx5_core_srq *srq = &(to_msrq(uobj->object)->msrq); | |
590 | u16 opcode; | |
591 | ||
592 | switch (srq->common.res) { | |
593 | case MLX5_RES_XSRQ: | |
594 | opcode = MLX5_CMD_OP_CREATE_XRC_SRQ; | |
595 | break; | |
596 | case MLX5_RES_XRQ: | |
597 | opcode = MLX5_CMD_OP_CREATE_XRQ; | |
598 | break; | |
599 | default: | |
600 | if (!dev->mdev->issi) | |
601 | opcode = MLX5_CMD_OP_CREATE_SRQ; | |
602 | else | |
603 | opcode = MLX5_CMD_OP_CREATE_RMP; | |
604 | } | |
605 | ||
606 | return get_enc_obj_id(opcode, | |
607 | to_msrq(uobj->object)->msrq.srqn) == | |
608 | obj_id; | |
609 | } | |
610 | ||
611 | case UVERBS_OBJECT_QP: | |
612 | { | |
613 | struct mlx5_ib_qp *qp = to_mqp(uobj->object); | |
614 | enum ib_qp_type qp_type = qp->ibqp.qp_type; | |
615 | ||
616 | if (qp_type == IB_QPT_RAW_PACKET || | |
617 | (qp->flags & MLX5_IB_QP_UNDERLAY)) { | |
618 | struct mlx5_ib_raw_packet_qp *raw_packet_qp = | |
619 | &qp->raw_packet_qp; | |
620 | struct mlx5_ib_rq *rq = &raw_packet_qp->rq; | |
621 | struct mlx5_ib_sq *sq = &raw_packet_qp->sq; | |
622 | ||
623 | return (get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, | |
624 | rq->base.mqp.qpn) == obj_id || | |
625 | get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, | |
626 | sq->base.mqp.qpn) == obj_id || | |
627 | get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, | |
628 | rq->tirn) == obj_id || | |
629 | get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, | |
630 | sq->tisn) == obj_id); | |
631 | } | |
632 | ||
633 | if (qp_type == MLX5_IB_QPT_DCT) | |
634 | return get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, | |
635 | qp->dct.mdct.mqp.qpn) == obj_id; | |
636 | ||
637 | return get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, | |
638 | qp->ibqp.qp_num) == obj_id; | |
639 | } | |
640 | ||
641 | case UVERBS_OBJECT_WQ: | |
642 | return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, | |
643 | to_mrwq(uobj->object)->core_qp.qpn) == | |
644 | obj_id; | |
645 | ||
646 | case UVERBS_OBJECT_RWQ_IND_TBL: | |
647 | return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, | |
648 | to_mrwq_ind_table(uobj->object)->rqtn) == | |
649 | obj_id; | |
650 | ||
651 | case MLX5_IB_OBJECT_DEVX_OBJ: | |
652 | return ((struct devx_obj *)uobj->object)->obj_id == obj_id; | |
653 | ||
654 | default: | |
655 | return false; | |
656 | } | |
657 | } | |
658 | ||
659 | static void devx_set_umem_valid(const void *in) | |
660 | { | |
661 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
662 | ||
663 | switch (opcode) { | |
664 | case MLX5_CMD_OP_CREATE_MKEY: | |
665 | MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1); | |
666 | break; | |
667 | case MLX5_CMD_OP_CREATE_CQ: | |
668 | { | |
669 | void *cqc; | |
670 | ||
671 | MLX5_SET(create_cq_in, in, cq_umem_valid, 1); | |
672 | cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context); | |
673 | MLX5_SET(cqc, cqc, dbr_umem_valid, 1); | |
674 | break; | |
675 | } | |
676 | case MLX5_CMD_OP_CREATE_QP: | |
677 | { | |
678 | void *qpc; | |
679 | ||
680 | qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); | |
681 | MLX5_SET(qpc, qpc, dbr_umem_valid, 1); | |
682 | MLX5_SET(create_qp_in, in, wq_umem_valid, 1); | |
683 | break; | |
684 | } | |
685 | ||
686 | case MLX5_CMD_OP_CREATE_RQ: | |
687 | { | |
688 | void *rqc, *wq; | |
689 | ||
690 | rqc = MLX5_ADDR_OF(create_rq_in, in, ctx); | |
691 | wq = MLX5_ADDR_OF(rqc, rqc, wq); | |
692 | MLX5_SET(wq, wq, dbr_umem_valid, 1); | |
693 | MLX5_SET(wq, wq, wq_umem_valid, 1); | |
694 | break; | |
695 | } | |
696 | ||
697 | case MLX5_CMD_OP_CREATE_SQ: | |
698 | { | |
699 | void *sqc, *wq; | |
700 | ||
701 | sqc = MLX5_ADDR_OF(create_sq_in, in, ctx); | |
702 | wq = MLX5_ADDR_OF(sqc, sqc, wq); | |
703 | MLX5_SET(wq, wq, dbr_umem_valid, 1); | |
704 | MLX5_SET(wq, wq, wq_umem_valid, 1); | |
705 | break; | |
706 | } | |
707 | ||
708 | case MLX5_CMD_OP_MODIFY_CQ: | |
709 | MLX5_SET(modify_cq_in, in, cq_umem_valid, 1); | |
710 | break; | |
711 | ||
712 | case MLX5_CMD_OP_CREATE_RMP: | |
713 | { | |
714 | void *rmpc, *wq; | |
715 | ||
716 | rmpc = MLX5_ADDR_OF(create_rmp_in, in, ctx); | |
717 | wq = MLX5_ADDR_OF(rmpc, rmpc, wq); | |
718 | MLX5_SET(wq, wq, dbr_umem_valid, 1); | |
719 | MLX5_SET(wq, wq, wq_umem_valid, 1); | |
720 | break; | |
721 | } | |
722 | ||
723 | case MLX5_CMD_OP_CREATE_XRQ: | |
724 | { | |
725 | void *xrqc, *wq; | |
726 | ||
727 | xrqc = MLX5_ADDR_OF(create_xrq_in, in, xrq_context); | |
728 | wq = MLX5_ADDR_OF(xrqc, xrqc, wq); | |
729 | MLX5_SET(wq, wq, dbr_umem_valid, 1); | |
730 | MLX5_SET(wq, wq, wq_umem_valid, 1); | |
731 | break; | |
732 | } | |
733 | ||
734 | case MLX5_CMD_OP_CREATE_XRC_SRQ: | |
735 | { | |
736 | void *xrc_srqc; | |
737 | ||
738 | MLX5_SET(create_xrc_srq_in, in, xrc_srq_umem_valid, 1); | |
739 | xrc_srqc = MLX5_ADDR_OF(create_xrc_srq_in, in, | |
740 | xrc_srq_context_entry); | |
741 | MLX5_SET(xrc_srqc, xrc_srqc, dbr_umem_valid, 1); | |
742 | break; | |
743 | } | |
744 | ||
745 | default: | |
746 | return; | |
747 | } | |
748 | } | |
749 | ||
750 | static bool devx_is_obj_create_cmd(const void *in, u16 *opcode) | |
751 | { | |
752 | *opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
753 | ||
754 | switch (*opcode) { | |
755 | case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: | |
756 | case MLX5_CMD_OP_CREATE_MKEY: | |
757 | case MLX5_CMD_OP_CREATE_CQ: | |
758 | case MLX5_CMD_OP_ALLOC_PD: | |
759 | case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: | |
760 | case MLX5_CMD_OP_CREATE_RMP: | |
761 | case MLX5_CMD_OP_CREATE_SQ: | |
762 | case MLX5_CMD_OP_CREATE_RQ: | |
763 | case MLX5_CMD_OP_CREATE_RQT: | |
764 | case MLX5_CMD_OP_CREATE_TIR: | |
765 | case MLX5_CMD_OP_CREATE_TIS: | |
766 | case MLX5_CMD_OP_ALLOC_Q_COUNTER: | |
767 | case MLX5_CMD_OP_CREATE_FLOW_TABLE: | |
768 | case MLX5_CMD_OP_CREATE_FLOW_GROUP: | |
769 | case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: | |
770 | case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: | |
771 | case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: | |
772 | case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: | |
773 | case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: | |
774 | case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: | |
775 | case MLX5_CMD_OP_CREATE_QP: | |
776 | case MLX5_CMD_OP_CREATE_SRQ: | |
777 | case MLX5_CMD_OP_CREATE_XRC_SRQ: | |
778 | case MLX5_CMD_OP_CREATE_DCT: | |
779 | case MLX5_CMD_OP_CREATE_XRQ: | |
780 | case MLX5_CMD_OP_ATTACH_TO_MCG: | |
781 | case MLX5_CMD_OP_ALLOC_XRCD: | |
782 | return true; | |
783 | case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: | |
784 | { | |
785 | u16 op_mod = MLX5_GET(set_fte_in, in, op_mod); | |
786 | if (op_mod == 0) | |
787 | return true; | |
788 | return false; | |
789 | } | |
790 | case MLX5_CMD_OP_CREATE_PSV: | |
791 | { | |
792 | u8 num_psv = MLX5_GET(create_psv_in, in, num_psv); | |
793 | ||
794 | if (num_psv == 1) | |
795 | return true; | |
796 | return false; | |
797 | } | |
798 | default: | |
799 | return false; | |
800 | } | |
801 | } | |
802 | ||
803 | static bool devx_is_obj_modify_cmd(const void *in) | |
804 | { | |
805 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
806 | ||
807 | switch (opcode) { | |
808 | case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT: | |
809 | case MLX5_CMD_OP_MODIFY_CQ: | |
810 | case MLX5_CMD_OP_MODIFY_RMP: | |
811 | case MLX5_CMD_OP_MODIFY_SQ: | |
812 | case MLX5_CMD_OP_MODIFY_RQ: | |
813 | case MLX5_CMD_OP_MODIFY_RQT: | |
814 | case MLX5_CMD_OP_MODIFY_TIR: | |
815 | case MLX5_CMD_OP_MODIFY_TIS: | |
816 | case MLX5_CMD_OP_MODIFY_FLOW_TABLE: | |
817 | case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: | |
818 | case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: | |
819 | case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: | |
820 | case MLX5_CMD_OP_RST2INIT_QP: | |
821 | case MLX5_CMD_OP_INIT2RTR_QP: | |
822 | case MLX5_CMD_OP_RTR2RTS_QP: | |
823 | case MLX5_CMD_OP_RTS2RTS_QP: | |
824 | case MLX5_CMD_OP_SQERR2RTS_QP: | |
825 | case MLX5_CMD_OP_2ERR_QP: | |
826 | case MLX5_CMD_OP_2RST_QP: | |
827 | case MLX5_CMD_OP_ARM_XRC_SRQ: | |
828 | case MLX5_CMD_OP_ARM_RQ: | |
829 | case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: | |
830 | case MLX5_CMD_OP_ARM_XRQ: | |
831 | case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY: | |
832 | case MLX5_CMD_OP_RELEASE_XRQ_ERROR: | |
833 | case MLX5_CMD_OP_MODIFY_XRQ: | |
834 | return true; | |
835 | case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: | |
836 | { | |
837 | u16 op_mod = MLX5_GET(set_fte_in, in, op_mod); | |
838 | ||
839 | if (op_mod == 1) | |
840 | return true; | |
841 | return false; | |
842 | } | |
843 | default: | |
844 | return false; | |
845 | } | |
846 | } | |
847 | ||
848 | static bool devx_is_obj_query_cmd(const void *in) | |
849 | { | |
850 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
851 | ||
852 | switch (opcode) { | |
853 | case MLX5_CMD_OP_QUERY_GENERAL_OBJECT: | |
854 | case MLX5_CMD_OP_QUERY_MKEY: | |
855 | case MLX5_CMD_OP_QUERY_CQ: | |
856 | case MLX5_CMD_OP_QUERY_RMP: | |
857 | case MLX5_CMD_OP_QUERY_SQ: | |
858 | case MLX5_CMD_OP_QUERY_RQ: | |
859 | case MLX5_CMD_OP_QUERY_RQT: | |
860 | case MLX5_CMD_OP_QUERY_TIR: | |
861 | case MLX5_CMD_OP_QUERY_TIS: | |
862 | case MLX5_CMD_OP_QUERY_Q_COUNTER: | |
863 | case MLX5_CMD_OP_QUERY_FLOW_TABLE: | |
864 | case MLX5_CMD_OP_QUERY_FLOW_GROUP: | |
865 | case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: | |
866 | case MLX5_CMD_OP_QUERY_FLOW_COUNTER: | |
867 | case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT: | |
868 | case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: | |
869 | case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: | |
870 | case MLX5_CMD_OP_QUERY_QP: | |
871 | case MLX5_CMD_OP_QUERY_SRQ: | |
872 | case MLX5_CMD_OP_QUERY_XRC_SRQ: | |
873 | case MLX5_CMD_OP_QUERY_DCT: | |
874 | case MLX5_CMD_OP_QUERY_XRQ: | |
875 | case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY: | |
876 | case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS: | |
877 | case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT: | |
878 | return true; | |
879 | default: | |
880 | return false; | |
881 | } | |
882 | } | |
883 | ||
884 | static bool devx_is_whitelist_cmd(void *in) | |
885 | { | |
886 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
887 | ||
888 | switch (opcode) { | |
889 | case MLX5_CMD_OP_QUERY_HCA_CAP: | |
890 | case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: | |
891 | case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: | |
892 | return true; | |
893 | default: | |
894 | return false; | |
895 | } | |
896 | } | |
897 | ||
898 | static int devx_get_uid(struct mlx5_ib_ucontext *c, void *cmd_in) | |
899 | { | |
900 | if (devx_is_whitelist_cmd(cmd_in)) { | |
901 | struct mlx5_ib_dev *dev; | |
902 | ||
903 | if (c->devx_uid) | |
904 | return c->devx_uid; | |
905 | ||
906 | dev = to_mdev(c->ibucontext.device); | |
907 | if (dev->devx_whitelist_uid) | |
908 | return dev->devx_whitelist_uid; | |
909 | ||
910 | return -EOPNOTSUPP; | |
911 | } | |
912 | ||
913 | if (!c->devx_uid) | |
914 | return -EINVAL; | |
915 | ||
916 | return c->devx_uid; | |
917 | } | |
918 | ||
919 | static bool devx_is_general_cmd(void *in, struct mlx5_ib_dev *dev) | |
920 | { | |
921 | u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); | |
922 | ||
923 | /* Pass all cmds for vhca_tunnel as general, tracking is done in FW */ | |
924 | if ((MLX5_CAP_GEN_64(dev->mdev, vhca_tunnel_commands) && | |
925 | MLX5_GET(general_obj_in_cmd_hdr, in, vhca_tunnel_id)) || | |
926 | (opcode >= MLX5_CMD_OP_GENERAL_START && | |
927 | opcode < MLX5_CMD_OP_GENERAL_END)) | |
928 | return true; | |
929 | ||
930 | switch (opcode) { | |
931 | case MLX5_CMD_OP_QUERY_HCA_CAP: | |
932 | case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: | |
933 | case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: | |
934 | case MLX5_CMD_OP_QUERY_VPORT_STATE: | |
935 | case MLX5_CMD_OP_QUERY_ADAPTER: | |
936 | case MLX5_CMD_OP_QUERY_ISSI: | |
937 | case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: | |
938 | case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: | |
939 | case MLX5_CMD_OP_QUERY_VNIC_ENV: | |
940 | case MLX5_CMD_OP_QUERY_VPORT_COUNTER: | |
941 | case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: | |
942 | case MLX5_CMD_OP_NOP: | |
943 | case MLX5_CMD_OP_QUERY_CONG_STATUS: | |
944 | case MLX5_CMD_OP_QUERY_CONG_PARAMS: | |
945 | case MLX5_CMD_OP_QUERY_CONG_STATISTICS: | |
946 | case MLX5_CMD_OP_QUERY_LAG: | |
947 | return true; | |
948 | default: | |
949 | return false; | |
950 | } | |
951 | } | |
952 | ||
953 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)( | |
954 | struct uverbs_attr_bundle *attrs) | |
955 | { | |
956 | struct mlx5_ib_ucontext *c; | |
957 | struct mlx5_ib_dev *dev; | |
958 | int user_vector; | |
959 | int dev_eqn; | |
960 | unsigned int irqn; | |
961 | int err; | |
962 | ||
963 | if (uverbs_copy_from(&user_vector, attrs, | |
964 | MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC)) | |
965 | return -EFAULT; | |
966 | ||
967 | c = devx_ufile2uctx(attrs); | |
968 | if (IS_ERR(c)) | |
969 | return PTR_ERR(c); | |
970 | dev = to_mdev(c->ibucontext.device); | |
971 | ||
972 | err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn, &irqn); | |
973 | if (err < 0) | |
974 | return err; | |
975 | ||
976 | if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, | |
977 | &dev_eqn, sizeof(dev_eqn))) | |
978 | return -EFAULT; | |
979 | ||
980 | return 0; | |
981 | } | |
982 | ||
983 | /* | |
984 | *Security note: | |
985 | * The hardware protection mechanism works like this: Each device object that | |
986 | * is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in | |
987 | * the device specification manual) upon its creation. Then upon doorbell, | |
988 | * hardware fetches the object context for which the doorbell was rang, and | |
989 | * validates that the UAR through which the DB was rang matches the UAR ID | |
990 | * of the object. | |
991 | * If no match the doorbell is silently ignored by the hardware. Of course, | |
992 | * the user cannot ring a doorbell on a UAR that was not mapped to it. | |
993 | * Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command | |
994 | * mailboxes (except tagging them with UID), we expose to the user its UAR | |
995 | * ID, so it can embed it in these objects in the expected specification | |
996 | * format. So the only thing the user can do is hurt itself by creating a | |
997 | * QP/SQ/CQ with a UAR ID other than his, and then in this case other users | |
998 | * may ring a doorbell on its objects. | |
999 | * The consequence of that will be that another user can schedule a QP/SQ | |
1000 | * of the buggy user for execution (just insert it to the hardware schedule | |
1001 | * queue or arm its CQ for event generation), no further harm is expected. | |
1002 | */ | |
1003 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)( | |
1004 | struct uverbs_attr_bundle *attrs) | |
1005 | { | |
1006 | struct mlx5_ib_ucontext *c; | |
1007 | struct mlx5_ib_dev *dev; | |
1008 | u32 user_idx; | |
1009 | s32 dev_idx; | |
1010 | ||
1011 | c = devx_ufile2uctx(attrs); | |
1012 | if (IS_ERR(c)) | |
1013 | return PTR_ERR(c); | |
1014 | dev = to_mdev(c->ibucontext.device); | |
1015 | ||
1016 | if (uverbs_copy_from(&user_idx, attrs, | |
1017 | MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX)) | |
1018 | return -EFAULT; | |
1019 | ||
1020 | dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true); | |
1021 | if (dev_idx < 0) | |
1022 | return dev_idx; | |
1023 | ||
1024 | if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX, | |
1025 | &dev_idx, sizeof(dev_idx))) | |
1026 | return -EFAULT; | |
1027 | ||
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)( | |
1032 | struct uverbs_attr_bundle *attrs) | |
1033 | { | |
1034 | struct mlx5_ib_ucontext *c; | |
1035 | struct mlx5_ib_dev *dev; | |
1036 | void *cmd_in = uverbs_attr_get_alloced_ptr( | |
1037 | attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN); | |
1038 | int cmd_out_len = uverbs_attr_get_len(attrs, | |
1039 | MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT); | |
1040 | void *cmd_out; | |
1041 | int err; | |
1042 | int uid; | |
1043 | ||
1044 | c = devx_ufile2uctx(attrs); | |
1045 | if (IS_ERR(c)) | |
1046 | return PTR_ERR(c); | |
1047 | dev = to_mdev(c->ibucontext.device); | |
1048 | ||
1049 | uid = devx_get_uid(c, cmd_in); | |
1050 | if (uid < 0) | |
1051 | return uid; | |
1052 | ||
1053 | /* Only white list of some general HCA commands are allowed for this method. */ | |
1054 | if (!devx_is_general_cmd(cmd_in, dev)) | |
1055 | return -EINVAL; | |
1056 | ||
1057 | cmd_out = uverbs_zalloc(attrs, cmd_out_len); | |
1058 | if (IS_ERR(cmd_out)) | |
1059 | return PTR_ERR(cmd_out); | |
1060 | ||
1061 | MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); | |
1062 | err = mlx5_cmd_exec(dev->mdev, cmd_in, | |
1063 | uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN), | |
1064 | cmd_out, cmd_out_len); | |
1065 | if (err) | |
1066 | return err; | |
1067 | ||
1068 | return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out, | |
1069 | cmd_out_len); | |
1070 | } | |
1071 | ||
1072 | static void devx_obj_build_destroy_cmd(void *in, void *out, void *din, | |
1073 | u32 *dinlen, | |
1074 | u32 *obj_id) | |
1075 | { | |
1076 | u16 obj_type = MLX5_GET(general_obj_in_cmd_hdr, in, obj_type); | |
1077 | u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid); | |
1078 | ||
1079 | *obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id); | |
1080 | *dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr); | |
1081 | ||
1082 | MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id); | |
1083 | MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid); | |
1084 | ||
1085 | switch (MLX5_GET(general_obj_in_cmd_hdr, in, opcode)) { | |
1086 | case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: | |
1087 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT); | |
1088 | MLX5_SET(general_obj_in_cmd_hdr, din, obj_type, obj_type); | |
1089 | break; | |
1090 | ||
1091 | case MLX5_CMD_OP_CREATE_UMEM: | |
1092 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1093 | MLX5_CMD_OP_DESTROY_UMEM); | |
1094 | break; | |
1095 | case MLX5_CMD_OP_CREATE_MKEY: | |
1096 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_MKEY); | |
1097 | break; | |
1098 | case MLX5_CMD_OP_CREATE_CQ: | |
1099 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_CQ); | |
1100 | break; | |
1101 | case MLX5_CMD_OP_ALLOC_PD: | |
1102 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_PD); | |
1103 | break; | |
1104 | case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: | |
1105 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1106 | MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN); | |
1107 | break; | |
1108 | case MLX5_CMD_OP_CREATE_RMP: | |
1109 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RMP); | |
1110 | break; | |
1111 | case MLX5_CMD_OP_CREATE_SQ: | |
1112 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SQ); | |
1113 | break; | |
1114 | case MLX5_CMD_OP_CREATE_RQ: | |
1115 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQ); | |
1116 | break; | |
1117 | case MLX5_CMD_OP_CREATE_RQT: | |
1118 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_RQT); | |
1119 | break; | |
1120 | case MLX5_CMD_OP_CREATE_TIR: | |
1121 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIR); | |
1122 | break; | |
1123 | case MLX5_CMD_OP_CREATE_TIS: | |
1124 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_TIS); | |
1125 | break; | |
1126 | case MLX5_CMD_OP_ALLOC_Q_COUNTER: | |
1127 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1128 | MLX5_CMD_OP_DEALLOC_Q_COUNTER); | |
1129 | break; | |
1130 | case MLX5_CMD_OP_CREATE_FLOW_TABLE: | |
1131 | *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in); | |
1132 | *obj_id = MLX5_GET(create_flow_table_out, out, table_id); | |
1133 | MLX5_SET(destroy_flow_table_in, din, other_vport, | |
1134 | MLX5_GET(create_flow_table_in, in, other_vport)); | |
1135 | MLX5_SET(destroy_flow_table_in, din, vport_number, | |
1136 | MLX5_GET(create_flow_table_in, in, vport_number)); | |
1137 | MLX5_SET(destroy_flow_table_in, din, table_type, | |
1138 | MLX5_GET(create_flow_table_in, in, table_type)); | |
1139 | MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id); | |
1140 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1141 | MLX5_CMD_OP_DESTROY_FLOW_TABLE); | |
1142 | break; | |
1143 | case MLX5_CMD_OP_CREATE_FLOW_GROUP: | |
1144 | *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in); | |
1145 | *obj_id = MLX5_GET(create_flow_group_out, out, group_id); | |
1146 | MLX5_SET(destroy_flow_group_in, din, other_vport, | |
1147 | MLX5_GET(create_flow_group_in, in, other_vport)); | |
1148 | MLX5_SET(destroy_flow_group_in, din, vport_number, | |
1149 | MLX5_GET(create_flow_group_in, in, vport_number)); | |
1150 | MLX5_SET(destroy_flow_group_in, din, table_type, | |
1151 | MLX5_GET(create_flow_group_in, in, table_type)); | |
1152 | MLX5_SET(destroy_flow_group_in, din, table_id, | |
1153 | MLX5_GET(create_flow_group_in, in, table_id)); | |
1154 | MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id); | |
1155 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1156 | MLX5_CMD_OP_DESTROY_FLOW_GROUP); | |
1157 | break; | |
1158 | case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: | |
1159 | *dinlen = MLX5_ST_SZ_BYTES(delete_fte_in); | |
1160 | *obj_id = MLX5_GET(set_fte_in, in, flow_index); | |
1161 | MLX5_SET(delete_fte_in, din, other_vport, | |
1162 | MLX5_GET(set_fte_in, in, other_vport)); | |
1163 | MLX5_SET(delete_fte_in, din, vport_number, | |
1164 | MLX5_GET(set_fte_in, in, vport_number)); | |
1165 | MLX5_SET(delete_fte_in, din, table_type, | |
1166 | MLX5_GET(set_fte_in, in, table_type)); | |
1167 | MLX5_SET(delete_fte_in, din, table_id, | |
1168 | MLX5_GET(set_fte_in, in, table_id)); | |
1169 | MLX5_SET(delete_fte_in, din, flow_index, *obj_id); | |
1170 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1171 | MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY); | |
1172 | break; | |
1173 | case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: | |
1174 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1175 | MLX5_CMD_OP_DEALLOC_FLOW_COUNTER); | |
1176 | break; | |
1177 | case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: | |
1178 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1179 | MLX5_CMD_OP_DEALLOC_PACKET_REFORMAT_CONTEXT); | |
1180 | break; | |
1181 | case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: | |
1182 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1183 | MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT); | |
1184 | break; | |
1185 | case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: | |
1186 | *dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in); | |
1187 | *obj_id = MLX5_GET(create_scheduling_element_out, out, | |
1188 | scheduling_element_id); | |
1189 | MLX5_SET(destroy_scheduling_element_in, din, | |
1190 | scheduling_hierarchy, | |
1191 | MLX5_GET(create_scheduling_element_in, in, | |
1192 | scheduling_hierarchy)); | |
1193 | MLX5_SET(destroy_scheduling_element_in, din, | |
1194 | scheduling_element_id, *obj_id); | |
1195 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1196 | MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT); | |
1197 | break; | |
1198 | case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: | |
1199 | *dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in); | |
1200 | *obj_id = MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port); | |
1201 | MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id); | |
1202 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1203 | MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT); | |
1204 | break; | |
1205 | case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: | |
1206 | *dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in); | |
1207 | *obj_id = MLX5_GET(set_l2_table_entry_in, in, table_index); | |
1208 | MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id); | |
1209 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1210 | MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY); | |
1211 | break; | |
1212 | case MLX5_CMD_OP_CREATE_QP: | |
1213 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_QP); | |
1214 | break; | |
1215 | case MLX5_CMD_OP_CREATE_SRQ: | |
1216 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_SRQ); | |
1217 | break; | |
1218 | case MLX5_CMD_OP_CREATE_XRC_SRQ: | |
1219 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1220 | MLX5_CMD_OP_DESTROY_XRC_SRQ); | |
1221 | break; | |
1222 | case MLX5_CMD_OP_CREATE_DCT: | |
1223 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_DCT); | |
1224 | break; | |
1225 | case MLX5_CMD_OP_CREATE_XRQ: | |
1226 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_XRQ); | |
1227 | break; | |
1228 | case MLX5_CMD_OP_ATTACH_TO_MCG: | |
1229 | *dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in); | |
1230 | MLX5_SET(detach_from_mcg_in, din, qpn, | |
1231 | MLX5_GET(attach_to_mcg_in, in, qpn)); | |
1232 | memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid), | |
1233 | MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid), | |
1234 | MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid)); | |
1235 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DETACH_FROM_MCG); | |
1236 | break; | |
1237 | case MLX5_CMD_OP_ALLOC_XRCD: | |
1238 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_XRCD); | |
1239 | break; | |
1240 | case MLX5_CMD_OP_CREATE_PSV: | |
1241 | MLX5_SET(general_obj_in_cmd_hdr, din, opcode, | |
1242 | MLX5_CMD_OP_DESTROY_PSV); | |
1243 | MLX5_SET(destroy_psv_in, din, psvn, | |
1244 | MLX5_GET(create_psv_out, out, psv0_index)); | |
1245 | break; | |
1246 | default: | |
1247 | /* The entry must match to one of the devx_is_obj_create_cmd */ | |
1248 | WARN_ON(true); | |
1249 | break; | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | static int devx_handle_mkey_indirect(struct devx_obj *obj, | |
1254 | struct mlx5_ib_dev *dev, | |
1255 | void *in, void *out) | |
1256 | { | |
1257 | struct mlx5_ib_devx_mr *devx_mr = &obj->devx_mr; | |
1258 | struct mlx5_core_mkey *mkey; | |
1259 | void *mkc; | |
1260 | u8 key; | |
1261 | ||
1262 | mkey = &devx_mr->mmkey; | |
1263 | mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); | |
1264 | key = MLX5_GET(mkc, mkc, mkey_7_0); | |
1265 | mkey->key = mlx5_idx_to_mkey( | |
1266 | MLX5_GET(create_mkey_out, out, mkey_index)) | key; | |
1267 | mkey->type = MLX5_MKEY_INDIRECT_DEVX; | |
1268 | mkey->iova = MLX5_GET64(mkc, mkc, start_addr); | |
1269 | mkey->size = MLX5_GET64(mkc, mkc, len); | |
1270 | mkey->pd = MLX5_GET(mkc, mkc, pd); | |
1271 | devx_mr->ndescs = MLX5_GET(mkc, mkc, translations_octword_size); | |
1272 | ||
1273 | return xa_err(xa_store(&dev->odp_mkeys, mlx5_base_mkey(mkey->key), mkey, | |
1274 | GFP_KERNEL)); | |
1275 | } | |
1276 | ||
1277 | static int devx_handle_mkey_create(struct mlx5_ib_dev *dev, | |
1278 | struct devx_obj *obj, | |
1279 | void *in, int in_len) | |
1280 | { | |
1281 | int min_len = MLX5_BYTE_OFF(create_mkey_in, memory_key_mkey_entry) + | |
1282 | MLX5_FLD_SZ_BYTES(create_mkey_in, | |
1283 | memory_key_mkey_entry); | |
1284 | void *mkc; | |
1285 | u8 access_mode; | |
1286 | ||
1287 | if (in_len < min_len) | |
1288 | return -EINVAL; | |
1289 | ||
1290 | mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); | |
1291 | ||
1292 | access_mode = MLX5_GET(mkc, mkc, access_mode_1_0); | |
1293 | access_mode |= MLX5_GET(mkc, mkc, access_mode_4_2) << 2; | |
1294 | ||
1295 | if (access_mode == MLX5_MKC_ACCESS_MODE_KLMS || | |
1296 | access_mode == MLX5_MKC_ACCESS_MODE_KSM) { | |
1297 | if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) | |
1298 | obj->flags |= DEVX_OBJ_FLAGS_INDIRECT_MKEY; | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1); | |
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | static void devx_cleanup_subscription(struct mlx5_ib_dev *dev, | |
1307 | struct devx_event_subscription *sub) | |
1308 | { | |
1309 | struct devx_event *event; | |
1310 | struct devx_obj_event *xa_val_level2; | |
1311 | ||
1312 | if (sub->is_cleaned) | |
1313 | return; | |
1314 | ||
1315 | sub->is_cleaned = 1; | |
1316 | list_del_rcu(&sub->xa_list); | |
1317 | ||
1318 | if (list_empty(&sub->obj_list)) | |
1319 | return; | |
1320 | ||
1321 | list_del_rcu(&sub->obj_list); | |
1322 | /* check whether key level 1 for this obj_sub_list is empty */ | |
1323 | event = xa_load(&dev->devx_event_table.event_xa, | |
1324 | sub->xa_key_level1); | |
1325 | WARN_ON(!event); | |
1326 | ||
1327 | xa_val_level2 = xa_load(&event->object_ids, sub->xa_key_level2); | |
1328 | if (list_empty(&xa_val_level2->obj_sub_list)) { | |
1329 | xa_erase(&event->object_ids, | |
1330 | sub->xa_key_level2); | |
1331 | kfree_rcu(xa_val_level2, rcu); | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | static int devx_obj_cleanup(struct ib_uobject *uobject, | |
1336 | enum rdma_remove_reason why, | |
1337 | struct uverbs_attr_bundle *attrs) | |
1338 | { | |
1339 | u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; | |
1340 | struct mlx5_devx_event_table *devx_event_table; | |
1341 | struct devx_obj *obj = uobject->object; | |
1342 | struct devx_event_subscription *sub_entry, *tmp; | |
1343 | struct mlx5_ib_dev *dev; | |
1344 | int ret; | |
1345 | ||
1346 | dev = mlx5_udata_to_mdev(&attrs->driver_udata); | |
1347 | if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY) { | |
1348 | /* | |
1349 | * The pagefault_single_data_segment() does commands against | |
1350 | * the mmkey, we must wait for that to stop before freeing the | |
1351 | * mkey, as another allocation could get the same mkey #. | |
1352 | */ | |
1353 | xa_erase(&obj->ib_dev->odp_mkeys, | |
1354 | mlx5_base_mkey(obj->devx_mr.mmkey.key)); | |
1355 | synchronize_srcu(&dev->odp_srcu); | |
1356 | } | |
1357 | ||
1358 | if (obj->flags & DEVX_OBJ_FLAGS_DCT) | |
1359 | ret = mlx5_core_destroy_dct(obj->ib_dev->mdev, &obj->core_dct); | |
1360 | else if (obj->flags & DEVX_OBJ_FLAGS_CQ) | |
1361 | ret = mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq); | |
1362 | else | |
1363 | ret = mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, | |
1364 | obj->dinlen, out, sizeof(out)); | |
1365 | if (ib_is_destroy_retryable(ret, why, uobject)) | |
1366 | return ret; | |
1367 | ||
1368 | devx_event_table = &dev->devx_event_table; | |
1369 | ||
1370 | mutex_lock(&devx_event_table->event_xa_lock); | |
1371 | list_for_each_entry_safe(sub_entry, tmp, &obj->event_sub, obj_list) | |
1372 | devx_cleanup_subscription(dev, sub_entry); | |
1373 | mutex_unlock(&devx_event_table->event_xa_lock); | |
1374 | ||
1375 | kfree(obj); | |
1376 | return ret; | |
1377 | } | |
1378 | ||
1379 | static void devx_cq_comp(struct mlx5_core_cq *mcq, struct mlx5_eqe *eqe) | |
1380 | { | |
1381 | struct devx_obj *obj = container_of(mcq, struct devx_obj, core_cq); | |
1382 | struct mlx5_devx_event_table *table; | |
1383 | struct devx_event *event; | |
1384 | struct devx_obj_event *obj_event; | |
1385 | u32 obj_id = mcq->cqn; | |
1386 | ||
1387 | table = &obj->ib_dev->devx_event_table; | |
1388 | rcu_read_lock(); | |
1389 | event = xa_load(&table->event_xa, MLX5_EVENT_TYPE_COMP); | |
1390 | if (!event) | |
1391 | goto out; | |
1392 | ||
1393 | obj_event = xa_load(&event->object_ids, obj_id); | |
1394 | if (!obj_event) | |
1395 | goto out; | |
1396 | ||
1397 | dispatch_event_fd(&obj_event->obj_sub_list, eqe); | |
1398 | out: | |
1399 | rcu_read_unlock(); | |
1400 | } | |
1401 | ||
1402 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)( | |
1403 | struct uverbs_attr_bundle *attrs) | |
1404 | { | |
1405 | void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN); | |
1406 | int cmd_out_len = uverbs_attr_get_len(attrs, | |
1407 | MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT); | |
1408 | int cmd_in_len = uverbs_attr_get_len(attrs, | |
1409 | MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN); | |
1410 | void *cmd_out; | |
1411 | struct ib_uobject *uobj = uverbs_attr_get_uobject( | |
1412 | attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE); | |
1413 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
1414 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
1415 | struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); | |
1416 | u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; | |
1417 | struct devx_obj *obj; | |
1418 | u16 obj_type = 0; | |
1419 | int err; | |
1420 | int uid; | |
1421 | u32 obj_id; | |
1422 | u16 opcode; | |
1423 | ||
1424 | if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) | |
1425 | return -EINVAL; | |
1426 | ||
1427 | uid = devx_get_uid(c, cmd_in); | |
1428 | if (uid < 0) | |
1429 | return uid; | |
1430 | ||
1431 | if (!devx_is_obj_create_cmd(cmd_in, &opcode)) | |
1432 | return -EINVAL; | |
1433 | ||
1434 | cmd_out = uverbs_zalloc(attrs, cmd_out_len); | |
1435 | if (IS_ERR(cmd_out)) | |
1436 | return PTR_ERR(cmd_out); | |
1437 | ||
1438 | obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL); | |
1439 | if (!obj) | |
1440 | return -ENOMEM; | |
1441 | ||
1442 | MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); | |
1443 | if (opcode == MLX5_CMD_OP_CREATE_MKEY) { | |
1444 | err = devx_handle_mkey_create(dev, obj, cmd_in, cmd_in_len); | |
1445 | if (err) | |
1446 | goto obj_free; | |
1447 | } else { | |
1448 | devx_set_umem_valid(cmd_in); | |
1449 | } | |
1450 | ||
1451 | if (opcode == MLX5_CMD_OP_CREATE_DCT) { | |
1452 | obj->flags |= DEVX_OBJ_FLAGS_DCT; | |
1453 | err = mlx5_core_create_dct(dev->mdev, &obj->core_dct, | |
1454 | cmd_in, cmd_in_len, | |
1455 | cmd_out, cmd_out_len); | |
1456 | } else if (opcode == MLX5_CMD_OP_CREATE_CQ) { | |
1457 | obj->flags |= DEVX_OBJ_FLAGS_CQ; | |
1458 | obj->core_cq.comp = devx_cq_comp; | |
1459 | err = mlx5_core_create_cq(dev->mdev, &obj->core_cq, | |
1460 | cmd_in, cmd_in_len, cmd_out, | |
1461 | cmd_out_len); | |
1462 | } else { | |
1463 | err = mlx5_cmd_exec(dev->mdev, cmd_in, | |
1464 | cmd_in_len, | |
1465 | cmd_out, cmd_out_len); | |
1466 | } | |
1467 | ||
1468 | if (err) | |
1469 | goto obj_free; | |
1470 | ||
1471 | if (opcode == MLX5_CMD_OP_ALLOC_FLOW_COUNTER) { | |
1472 | u8 bulk = MLX5_GET(alloc_flow_counter_in, | |
1473 | cmd_in, | |
1474 | flow_counter_bulk); | |
1475 | obj->flow_counter_bulk_size = 128UL * bulk; | |
1476 | } | |
1477 | ||
1478 | uobj->object = obj; | |
1479 | INIT_LIST_HEAD(&obj->event_sub); | |
1480 | obj->ib_dev = dev; | |
1481 | devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, | |
1482 | &obj_id); | |
1483 | WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32)); | |
1484 | ||
1485 | err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len); | |
1486 | if (err) | |
1487 | goto obj_destroy; | |
1488 | ||
1489 | if (opcode == MLX5_CMD_OP_CREATE_GENERAL_OBJECT) | |
1490 | obj_type = MLX5_GET(general_obj_in_cmd_hdr, cmd_in, obj_type); | |
1491 | obj->obj_id = get_enc_obj_id(opcode | obj_type << 16, obj_id); | |
1492 | ||
1493 | if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY) { | |
1494 | err = devx_handle_mkey_indirect(obj, dev, cmd_in, cmd_out); | |
1495 | if (err) | |
1496 | goto obj_destroy; | |
1497 | } | |
1498 | return 0; | |
1499 | ||
1500 | obj_destroy: | |
1501 | if (obj->flags & DEVX_OBJ_FLAGS_DCT) | |
1502 | mlx5_core_destroy_dct(obj->ib_dev->mdev, &obj->core_dct); | |
1503 | else if (obj->flags & DEVX_OBJ_FLAGS_CQ) | |
1504 | mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq); | |
1505 | else | |
1506 | mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, obj->dinlen, out, | |
1507 | sizeof(out)); | |
1508 | obj_free: | |
1509 | kfree(obj); | |
1510 | return err; | |
1511 | } | |
1512 | ||
1513 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)( | |
1514 | struct uverbs_attr_bundle *attrs) | |
1515 | { | |
1516 | void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN); | |
1517 | int cmd_out_len = uverbs_attr_get_len(attrs, | |
1518 | MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT); | |
1519 | struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, | |
1520 | MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE); | |
1521 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
1522 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
1523 | struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); | |
1524 | void *cmd_out; | |
1525 | int err; | |
1526 | int uid; | |
1527 | ||
1528 | if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) | |
1529 | return -EINVAL; | |
1530 | ||
1531 | uid = devx_get_uid(c, cmd_in); | |
1532 | if (uid < 0) | |
1533 | return uid; | |
1534 | ||
1535 | if (!devx_is_obj_modify_cmd(cmd_in)) | |
1536 | return -EINVAL; | |
1537 | ||
1538 | if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) | |
1539 | return -EINVAL; | |
1540 | ||
1541 | cmd_out = uverbs_zalloc(attrs, cmd_out_len); | |
1542 | if (IS_ERR(cmd_out)) | |
1543 | return PTR_ERR(cmd_out); | |
1544 | ||
1545 | MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); | |
1546 | devx_set_umem_valid(cmd_in); | |
1547 | ||
1548 | err = mlx5_cmd_exec(mdev->mdev, cmd_in, | |
1549 | uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN), | |
1550 | cmd_out, cmd_out_len); | |
1551 | if (err) | |
1552 | return err; | |
1553 | ||
1554 | return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT, | |
1555 | cmd_out, cmd_out_len); | |
1556 | } | |
1557 | ||
1558 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)( | |
1559 | struct uverbs_attr_bundle *attrs) | |
1560 | { | |
1561 | void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN); | |
1562 | int cmd_out_len = uverbs_attr_get_len(attrs, | |
1563 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT); | |
1564 | struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, | |
1565 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE); | |
1566 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
1567 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
1568 | void *cmd_out; | |
1569 | int err; | |
1570 | int uid; | |
1571 | struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); | |
1572 | ||
1573 | if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) | |
1574 | return -EINVAL; | |
1575 | ||
1576 | uid = devx_get_uid(c, cmd_in); | |
1577 | if (uid < 0) | |
1578 | return uid; | |
1579 | ||
1580 | if (!devx_is_obj_query_cmd(cmd_in)) | |
1581 | return -EINVAL; | |
1582 | ||
1583 | if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) | |
1584 | return -EINVAL; | |
1585 | ||
1586 | cmd_out = uverbs_zalloc(attrs, cmd_out_len); | |
1587 | if (IS_ERR(cmd_out)) | |
1588 | return PTR_ERR(cmd_out); | |
1589 | ||
1590 | MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); | |
1591 | err = mlx5_cmd_exec(mdev->mdev, cmd_in, | |
1592 | uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN), | |
1593 | cmd_out, cmd_out_len); | |
1594 | if (err) | |
1595 | return err; | |
1596 | ||
1597 | return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, | |
1598 | cmd_out, cmd_out_len); | |
1599 | } | |
1600 | ||
1601 | struct devx_async_event_queue { | |
1602 | spinlock_t lock; | |
1603 | wait_queue_head_t poll_wait; | |
1604 | struct list_head event_list; | |
1605 | atomic_t bytes_in_use; | |
1606 | u8 is_destroyed:1; | |
1607 | }; | |
1608 | ||
1609 | struct devx_async_cmd_event_file { | |
1610 | struct ib_uobject uobj; | |
1611 | struct devx_async_event_queue ev_queue; | |
1612 | struct mlx5_async_ctx async_ctx; | |
1613 | }; | |
1614 | ||
1615 | static void devx_init_event_queue(struct devx_async_event_queue *ev_queue) | |
1616 | { | |
1617 | spin_lock_init(&ev_queue->lock); | |
1618 | INIT_LIST_HEAD(&ev_queue->event_list); | |
1619 | init_waitqueue_head(&ev_queue->poll_wait); | |
1620 | atomic_set(&ev_queue->bytes_in_use, 0); | |
1621 | ev_queue->is_destroyed = 0; | |
1622 | } | |
1623 | ||
1624 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)( | |
1625 | struct uverbs_attr_bundle *attrs) | |
1626 | { | |
1627 | struct devx_async_cmd_event_file *ev_file; | |
1628 | ||
1629 | struct ib_uobject *uobj = uverbs_attr_get_uobject( | |
1630 | attrs, MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE); | |
1631 | struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata); | |
1632 | ||
1633 | ev_file = container_of(uobj, struct devx_async_cmd_event_file, | |
1634 | uobj); | |
1635 | devx_init_event_queue(&ev_file->ev_queue); | |
1636 | mlx5_cmd_init_async_ctx(mdev->mdev, &ev_file->async_ctx); | |
1637 | return 0; | |
1638 | } | |
1639 | ||
1640 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)( | |
1641 | struct uverbs_attr_bundle *attrs) | |
1642 | { | |
1643 | struct ib_uobject *uobj = uverbs_attr_get_uobject( | |
1644 | attrs, MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE); | |
1645 | struct devx_async_event_file *ev_file; | |
1646 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
1647 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
1648 | struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); | |
1649 | u32 flags; | |
1650 | int err; | |
1651 | ||
1652 | err = uverbs_get_flags32(&flags, attrs, | |
1653 | MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, | |
1654 | MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA); | |
1655 | ||
1656 | if (err) | |
1657 | return err; | |
1658 | ||
1659 | ev_file = container_of(uobj, struct devx_async_event_file, | |
1660 | uobj); | |
1661 | spin_lock_init(&ev_file->lock); | |
1662 | INIT_LIST_HEAD(&ev_file->event_list); | |
1663 | init_waitqueue_head(&ev_file->poll_wait); | |
1664 | if (flags & MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA) | |
1665 | ev_file->omit_data = 1; | |
1666 | INIT_LIST_HEAD(&ev_file->subscribed_events_list); | |
1667 | ev_file->dev = dev; | |
1668 | get_device(&dev->ib_dev.dev); | |
1669 | return 0; | |
1670 | } | |
1671 | ||
1672 | static void devx_query_callback(int status, struct mlx5_async_work *context) | |
1673 | { | |
1674 | struct devx_async_data *async_data = | |
1675 | container_of(context, struct devx_async_data, cb_work); | |
1676 | struct devx_async_cmd_event_file *ev_file = async_data->ev_file; | |
1677 | struct devx_async_event_queue *ev_queue = &ev_file->ev_queue; | |
1678 | unsigned long flags; | |
1679 | ||
1680 | /* | |
1681 | * Note that if the struct devx_async_cmd_event_file uobj begins to be | |
1682 | * destroyed it will block at mlx5_cmd_cleanup_async_ctx() until this | |
1683 | * routine returns, ensuring that it always remains valid here. | |
1684 | */ | |
1685 | spin_lock_irqsave(&ev_queue->lock, flags); | |
1686 | list_add_tail(&async_data->list, &ev_queue->event_list); | |
1687 | spin_unlock_irqrestore(&ev_queue->lock, flags); | |
1688 | ||
1689 | wake_up_interruptible(&ev_queue->poll_wait); | |
1690 | } | |
1691 | ||
1692 | #define MAX_ASYNC_BYTES_IN_USE (1024 * 1024) /* 1MB */ | |
1693 | ||
1694 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)( | |
1695 | struct uverbs_attr_bundle *attrs) | |
1696 | { | |
1697 | void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, | |
1698 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN); | |
1699 | struct ib_uobject *uobj = uverbs_attr_get_uobject( | |
1700 | attrs, | |
1701 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_HANDLE); | |
1702 | u16 cmd_out_len; | |
1703 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
1704 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
1705 | struct ib_uobject *fd_uobj; | |
1706 | int err; | |
1707 | int uid; | |
1708 | struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); | |
1709 | struct devx_async_cmd_event_file *ev_file; | |
1710 | struct devx_async_data *async_data; | |
1711 | ||
1712 | if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) | |
1713 | return -EINVAL; | |
1714 | ||
1715 | uid = devx_get_uid(c, cmd_in); | |
1716 | if (uid < 0) | |
1717 | return uid; | |
1718 | ||
1719 | if (!devx_is_obj_query_cmd(cmd_in)) | |
1720 | return -EINVAL; | |
1721 | ||
1722 | err = uverbs_get_const(&cmd_out_len, attrs, | |
1723 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN); | |
1724 | if (err) | |
1725 | return err; | |
1726 | ||
1727 | if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) | |
1728 | return -EINVAL; | |
1729 | ||
1730 | fd_uobj = uverbs_attr_get_uobject(attrs, | |
1731 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD); | |
1732 | if (IS_ERR(fd_uobj)) | |
1733 | return PTR_ERR(fd_uobj); | |
1734 | ||
1735 | ev_file = container_of(fd_uobj, struct devx_async_cmd_event_file, | |
1736 | uobj); | |
1737 | ||
1738 | if (atomic_add_return(cmd_out_len, &ev_file->ev_queue.bytes_in_use) > | |
1739 | MAX_ASYNC_BYTES_IN_USE) { | |
1740 | atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use); | |
1741 | return -EAGAIN; | |
1742 | } | |
1743 | ||
1744 | async_data = kvzalloc(struct_size(async_data, hdr.out_data, | |
1745 | cmd_out_len), GFP_KERNEL); | |
1746 | if (!async_data) { | |
1747 | err = -ENOMEM; | |
1748 | goto sub_bytes; | |
1749 | } | |
1750 | ||
1751 | err = uverbs_copy_from(&async_data->hdr.wr_id, attrs, | |
1752 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID); | |
1753 | if (err) | |
1754 | goto free_async; | |
1755 | ||
1756 | async_data->cmd_out_len = cmd_out_len; | |
1757 | async_data->mdev = mdev; | |
1758 | async_data->ev_file = ev_file; | |
1759 | ||
1760 | MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); | |
1761 | err = mlx5_cmd_exec_cb(&ev_file->async_ctx, cmd_in, | |
1762 | uverbs_attr_get_len(attrs, | |
1763 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN), | |
1764 | async_data->hdr.out_data, | |
1765 | async_data->cmd_out_len, | |
1766 | devx_query_callback, &async_data->cb_work); | |
1767 | ||
1768 | if (err) | |
1769 | goto free_async; | |
1770 | ||
1771 | return 0; | |
1772 | ||
1773 | free_async: | |
1774 | kvfree(async_data); | |
1775 | sub_bytes: | |
1776 | atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use); | |
1777 | return err; | |
1778 | } | |
1779 | ||
1780 | static void | |
1781 | subscribe_event_xa_dealloc(struct mlx5_devx_event_table *devx_event_table, | |
1782 | u32 key_level1, | |
1783 | bool is_level2, | |
1784 | u32 key_level2) | |
1785 | { | |
1786 | struct devx_event *event; | |
1787 | struct devx_obj_event *xa_val_level2; | |
1788 | ||
1789 | /* Level 1 is valid for future use, no need to free */ | |
1790 | if (!is_level2) | |
1791 | return; | |
1792 | ||
1793 | event = xa_load(&devx_event_table->event_xa, key_level1); | |
1794 | WARN_ON(!event); | |
1795 | ||
1796 | xa_val_level2 = xa_load(&event->object_ids, | |
1797 | key_level2); | |
1798 | if (list_empty(&xa_val_level2->obj_sub_list)) { | |
1799 | xa_erase(&event->object_ids, | |
1800 | key_level2); | |
1801 | kfree_rcu(xa_val_level2, rcu); | |
1802 | } | |
1803 | } | |
1804 | ||
1805 | static int | |
1806 | subscribe_event_xa_alloc(struct mlx5_devx_event_table *devx_event_table, | |
1807 | u32 key_level1, | |
1808 | bool is_level2, | |
1809 | u32 key_level2) | |
1810 | { | |
1811 | struct devx_obj_event *obj_event; | |
1812 | struct devx_event *event; | |
1813 | int err; | |
1814 | ||
1815 | event = xa_load(&devx_event_table->event_xa, key_level1); | |
1816 | if (!event) { | |
1817 | event = kzalloc(sizeof(*event), GFP_KERNEL); | |
1818 | if (!event) | |
1819 | return -ENOMEM; | |
1820 | ||
1821 | INIT_LIST_HEAD(&event->unaffiliated_list); | |
1822 | xa_init(&event->object_ids); | |
1823 | ||
1824 | err = xa_insert(&devx_event_table->event_xa, | |
1825 | key_level1, | |
1826 | event, | |
1827 | GFP_KERNEL); | |
1828 | if (err) { | |
1829 | kfree(event); | |
1830 | return err; | |
1831 | } | |
1832 | } | |
1833 | ||
1834 | if (!is_level2) | |
1835 | return 0; | |
1836 | ||
1837 | obj_event = xa_load(&event->object_ids, key_level2); | |
1838 | if (!obj_event) { | |
1839 | obj_event = kzalloc(sizeof(*obj_event), GFP_KERNEL); | |
1840 | if (!obj_event) | |
1841 | /* Level1 is valid for future use, no need to free */ | |
1842 | return -ENOMEM; | |
1843 | ||
1844 | err = xa_insert(&event->object_ids, | |
1845 | key_level2, | |
1846 | obj_event, | |
1847 | GFP_KERNEL); | |
1848 | if (err) | |
1849 | return err; | |
1850 | INIT_LIST_HEAD(&obj_event->obj_sub_list); | |
1851 | } | |
1852 | ||
1853 | return 0; | |
1854 | } | |
1855 | ||
1856 | static bool is_valid_events_legacy(int num_events, u16 *event_type_num_list, | |
1857 | struct devx_obj *obj) | |
1858 | { | |
1859 | int i; | |
1860 | ||
1861 | for (i = 0; i < num_events; i++) { | |
1862 | if (obj) { | |
1863 | if (!is_legacy_obj_event_num(event_type_num_list[i])) | |
1864 | return false; | |
1865 | } else if (!is_legacy_unaffiliated_event_num( | |
1866 | event_type_num_list[i])) { | |
1867 | return false; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | return true; | |
1872 | } | |
1873 | ||
1874 | #define MAX_SUPP_EVENT_NUM 255 | |
1875 | static bool is_valid_events(struct mlx5_core_dev *dev, | |
1876 | int num_events, u16 *event_type_num_list, | |
1877 | struct devx_obj *obj) | |
1878 | { | |
1879 | __be64 *aff_events; | |
1880 | __be64 *unaff_events; | |
1881 | int mask_entry; | |
1882 | int mask_bit; | |
1883 | int i; | |
1884 | ||
1885 | if (MLX5_CAP_GEN(dev, event_cap)) { | |
1886 | aff_events = MLX5_CAP_DEV_EVENT(dev, | |
1887 | user_affiliated_events); | |
1888 | unaff_events = MLX5_CAP_DEV_EVENT(dev, | |
1889 | user_unaffiliated_events); | |
1890 | } else { | |
1891 | return is_valid_events_legacy(num_events, event_type_num_list, | |
1892 | obj); | |
1893 | } | |
1894 | ||
1895 | for (i = 0; i < num_events; i++) { | |
1896 | if (event_type_num_list[i] > MAX_SUPP_EVENT_NUM) | |
1897 | return false; | |
1898 | ||
1899 | mask_entry = event_type_num_list[i] / 64; | |
1900 | mask_bit = event_type_num_list[i] % 64; | |
1901 | ||
1902 | if (obj) { | |
1903 | /* CQ completion */ | |
1904 | if (event_type_num_list[i] == 0) | |
1905 | continue; | |
1906 | ||
1907 | if (!(be64_to_cpu(aff_events[mask_entry]) & | |
1908 | (1ull << mask_bit))) | |
1909 | return false; | |
1910 | ||
1911 | continue; | |
1912 | } | |
1913 | ||
1914 | if (!(be64_to_cpu(unaff_events[mask_entry]) & | |
1915 | (1ull << mask_bit))) | |
1916 | return false; | |
1917 | } | |
1918 | ||
1919 | return true; | |
1920 | } | |
1921 | ||
1922 | #define MAX_NUM_EVENTS 16 | |
1923 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)( | |
1924 | struct uverbs_attr_bundle *attrs) | |
1925 | { | |
1926 | struct ib_uobject *devx_uobj = uverbs_attr_get_uobject( | |
1927 | attrs, | |
1928 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE); | |
1929 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
1930 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
1931 | struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); | |
1932 | struct ib_uobject *fd_uobj; | |
1933 | struct devx_obj *obj = NULL; | |
1934 | struct devx_async_event_file *ev_file; | |
1935 | struct mlx5_devx_event_table *devx_event_table = &dev->devx_event_table; | |
1936 | u16 *event_type_num_list; | |
1937 | struct devx_event_subscription *event_sub, *tmp_sub; | |
1938 | struct list_head sub_list; | |
1939 | int redirect_fd; | |
1940 | bool use_eventfd = false; | |
1941 | int num_events; | |
1942 | int num_alloc_xa_entries = 0; | |
1943 | u16 obj_type = 0; | |
1944 | u64 cookie = 0; | |
1945 | u32 obj_id = 0; | |
1946 | int err; | |
1947 | int i; | |
1948 | ||
1949 | if (!c->devx_uid) | |
1950 | return -EINVAL; | |
1951 | ||
1952 | if (!IS_ERR(devx_uobj)) { | |
1953 | obj = (struct devx_obj *)devx_uobj->object; | |
1954 | if (obj) | |
1955 | obj_id = get_dec_obj_id(obj->obj_id); | |
1956 | } | |
1957 | ||
1958 | fd_uobj = uverbs_attr_get_uobject(attrs, | |
1959 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE); | |
1960 | if (IS_ERR(fd_uobj)) | |
1961 | return PTR_ERR(fd_uobj); | |
1962 | ||
1963 | ev_file = container_of(fd_uobj, struct devx_async_event_file, | |
1964 | uobj); | |
1965 | ||
1966 | if (uverbs_attr_is_valid(attrs, | |
1967 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM)) { | |
1968 | err = uverbs_copy_from(&redirect_fd, attrs, | |
1969 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM); | |
1970 | if (err) | |
1971 | return err; | |
1972 | ||
1973 | use_eventfd = true; | |
1974 | } | |
1975 | ||
1976 | if (uverbs_attr_is_valid(attrs, | |
1977 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE)) { | |
1978 | if (use_eventfd) | |
1979 | return -EINVAL; | |
1980 | ||
1981 | err = uverbs_copy_from(&cookie, attrs, | |
1982 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE); | |
1983 | if (err) | |
1984 | return err; | |
1985 | } | |
1986 | ||
1987 | num_events = uverbs_attr_ptr_get_array_size( | |
1988 | attrs, MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST, | |
1989 | sizeof(u16)); | |
1990 | ||
1991 | if (num_events < 0) | |
1992 | return num_events; | |
1993 | ||
1994 | if (num_events > MAX_NUM_EVENTS) | |
1995 | return -EINVAL; | |
1996 | ||
1997 | event_type_num_list = uverbs_attr_get_alloced_ptr(attrs, | |
1998 | MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST); | |
1999 | ||
2000 | if (!is_valid_events(dev->mdev, num_events, event_type_num_list, obj)) | |
2001 | return -EINVAL; | |
2002 | ||
2003 | INIT_LIST_HEAD(&sub_list); | |
2004 | ||
2005 | /* Protect from concurrent subscriptions to same XA entries to allow | |
2006 | * both to succeed | |
2007 | */ | |
2008 | mutex_lock(&devx_event_table->event_xa_lock); | |
2009 | for (i = 0; i < num_events; i++) { | |
2010 | u32 key_level1; | |
2011 | ||
2012 | if (obj) | |
2013 | obj_type = get_dec_obj_type(obj, | |
2014 | event_type_num_list[i]); | |
2015 | key_level1 = event_type_num_list[i] | obj_type << 16; | |
2016 | ||
2017 | err = subscribe_event_xa_alloc(devx_event_table, | |
2018 | key_level1, | |
2019 | obj, | |
2020 | obj_id); | |
2021 | if (err) | |
2022 | goto err; | |
2023 | ||
2024 | num_alloc_xa_entries++; | |
2025 | event_sub = kzalloc(sizeof(*event_sub), GFP_KERNEL); | |
2026 | if (!event_sub) | |
2027 | goto err; | |
2028 | ||
2029 | list_add_tail(&event_sub->event_list, &sub_list); | |
2030 | uverbs_uobject_get(&ev_file->uobj); | |
2031 | if (use_eventfd) { | |
2032 | event_sub->eventfd = | |
2033 | eventfd_ctx_fdget(redirect_fd); | |
2034 | ||
2035 | if (IS_ERR(event_sub->eventfd)) { | |
2036 | err = PTR_ERR(event_sub->eventfd); | |
2037 | event_sub->eventfd = NULL; | |
2038 | goto err; | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | event_sub->cookie = cookie; | |
2043 | event_sub->ev_file = ev_file; | |
2044 | /* May be needed upon cleanup the devx object/subscription */ | |
2045 | event_sub->xa_key_level1 = key_level1; | |
2046 | event_sub->xa_key_level2 = obj_id; | |
2047 | INIT_LIST_HEAD(&event_sub->obj_list); | |
2048 | } | |
2049 | ||
2050 | /* Once all the allocations and the XA data insertions were done we | |
2051 | * can go ahead and add all the subscriptions to the relevant lists | |
2052 | * without concern of a failure. | |
2053 | */ | |
2054 | list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) { | |
2055 | struct devx_event *event; | |
2056 | struct devx_obj_event *obj_event; | |
2057 | ||
2058 | list_del_init(&event_sub->event_list); | |
2059 | ||
2060 | spin_lock_irq(&ev_file->lock); | |
2061 | list_add_tail_rcu(&event_sub->file_list, | |
2062 | &ev_file->subscribed_events_list); | |
2063 | spin_unlock_irq(&ev_file->lock); | |
2064 | ||
2065 | event = xa_load(&devx_event_table->event_xa, | |
2066 | event_sub->xa_key_level1); | |
2067 | WARN_ON(!event); | |
2068 | ||
2069 | if (!obj) { | |
2070 | list_add_tail_rcu(&event_sub->xa_list, | |
2071 | &event->unaffiliated_list); | |
2072 | continue; | |
2073 | } | |
2074 | ||
2075 | obj_event = xa_load(&event->object_ids, obj_id); | |
2076 | WARN_ON(!obj_event); | |
2077 | list_add_tail_rcu(&event_sub->xa_list, | |
2078 | &obj_event->obj_sub_list); | |
2079 | list_add_tail_rcu(&event_sub->obj_list, | |
2080 | &obj->event_sub); | |
2081 | } | |
2082 | ||
2083 | mutex_unlock(&devx_event_table->event_xa_lock); | |
2084 | return 0; | |
2085 | ||
2086 | err: | |
2087 | list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) { | |
2088 | list_del(&event_sub->event_list); | |
2089 | ||
2090 | subscribe_event_xa_dealloc(devx_event_table, | |
2091 | event_sub->xa_key_level1, | |
2092 | obj, | |
2093 | obj_id); | |
2094 | ||
2095 | if (event_sub->eventfd) | |
2096 | eventfd_ctx_put(event_sub->eventfd); | |
2097 | uverbs_uobject_put(&event_sub->ev_file->uobj); | |
2098 | kfree(event_sub); | |
2099 | } | |
2100 | ||
2101 | mutex_unlock(&devx_event_table->event_xa_lock); | |
2102 | return err; | |
2103 | } | |
2104 | ||
2105 | static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext, | |
2106 | struct uverbs_attr_bundle *attrs, | |
2107 | struct devx_umem *obj) | |
2108 | { | |
2109 | u64 addr; | |
2110 | size_t size; | |
2111 | u32 access; | |
2112 | int npages; | |
2113 | int err; | |
2114 | u32 page_mask; | |
2115 | ||
2116 | if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) || | |
2117 | uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN)) | |
2118 | return -EFAULT; | |
2119 | ||
2120 | err = uverbs_get_flags32(&access, attrs, | |
2121 | MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, | |
2122 | IB_ACCESS_LOCAL_WRITE | | |
2123 | IB_ACCESS_REMOTE_WRITE | | |
2124 | IB_ACCESS_REMOTE_READ); | |
2125 | if (err) | |
2126 | return err; | |
2127 | ||
2128 | err = ib_check_mr_access(access); | |
2129 | if (err) | |
2130 | return err; | |
2131 | ||
2132 | obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access); | |
2133 | if (IS_ERR(obj->umem)) | |
2134 | return PTR_ERR(obj->umem); | |
2135 | ||
2136 | mlx5_ib_cont_pages(obj->umem, obj->umem->address, | |
2137 | MLX5_MKEY_PAGE_SHIFT_MASK, &npages, | |
2138 | &obj->page_shift, &obj->ncont, NULL); | |
2139 | ||
2140 | if (!npages) { | |
2141 | ib_umem_release(obj->umem); | |
2142 | return -EINVAL; | |
2143 | } | |
2144 | ||
2145 | page_mask = (1 << obj->page_shift) - 1; | |
2146 | obj->page_offset = obj->umem->address & page_mask; | |
2147 | ||
2148 | return 0; | |
2149 | } | |
2150 | ||
2151 | static int devx_umem_reg_cmd_alloc(struct uverbs_attr_bundle *attrs, | |
2152 | struct devx_umem *obj, | |
2153 | struct devx_umem_reg_cmd *cmd) | |
2154 | { | |
2155 | cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) + | |
2156 | (MLX5_ST_SZ_BYTES(mtt) * obj->ncont); | |
2157 | cmd->in = uverbs_zalloc(attrs, cmd->inlen); | |
2158 | return PTR_ERR_OR_ZERO(cmd->in); | |
2159 | } | |
2160 | ||
2161 | static void devx_umem_reg_cmd_build(struct mlx5_ib_dev *dev, | |
2162 | struct devx_umem *obj, | |
2163 | struct devx_umem_reg_cmd *cmd) | |
2164 | { | |
2165 | void *umem; | |
2166 | __be64 *mtt; | |
2167 | ||
2168 | umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem); | |
2169 | mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt); | |
2170 | ||
2171 | MLX5_SET(create_umem_in, cmd->in, opcode, MLX5_CMD_OP_CREATE_UMEM); | |
2172 | MLX5_SET64(umem, umem, num_of_mtt, obj->ncont); | |
2173 | MLX5_SET(umem, umem, log_page_size, obj->page_shift - | |
2174 | MLX5_ADAPTER_PAGE_SHIFT); | |
2175 | MLX5_SET(umem, umem, page_offset, obj->page_offset); | |
2176 | mlx5_ib_populate_pas(dev, obj->umem, obj->page_shift, mtt, | |
2177 | (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) | | |
2178 | MLX5_IB_MTT_READ); | |
2179 | } | |
2180 | ||
2181 | static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)( | |
2182 | struct uverbs_attr_bundle *attrs) | |
2183 | { | |
2184 | struct devx_umem_reg_cmd cmd; | |
2185 | struct devx_umem *obj; | |
2186 | struct ib_uobject *uobj = uverbs_attr_get_uobject( | |
2187 | attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE); | |
2188 | u32 obj_id; | |
2189 | struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( | |
2190 | &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); | |
2191 | struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); | |
2192 | int err; | |
2193 | ||
2194 | if (!c->devx_uid) | |
2195 | return -EINVAL; | |
2196 | ||
2197 | obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL); | |
2198 | if (!obj) | |
2199 | return -ENOMEM; | |
2200 | ||
2201 | err = devx_umem_get(dev, &c->ibucontext, attrs, obj); | |
2202 | if (err) | |
2203 | goto err_obj_free; | |
2204 | ||
2205 | err = devx_umem_reg_cmd_alloc(attrs, obj, &cmd); | |
2206 | if (err) | |
2207 | goto err_umem_release; | |
2208 | ||
2209 | devx_umem_reg_cmd_build(dev, obj, &cmd); | |
2210 | ||
2211 | MLX5_SET(create_umem_in, cmd.in, uid, c->devx_uid); | |
2212 | err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out, | |
2213 | sizeof(cmd.out)); | |
2214 | if (err) | |
2215 | goto err_umem_release; | |
2216 | ||
2217 | obj->mdev = dev->mdev; | |
2218 | uobj->object = obj; | |
2219 | devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id); | |
2220 | err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, sizeof(obj_id)); | |
2221 | if (err) | |
2222 | goto err_umem_destroy; | |
2223 | ||
2224 | return 0; | |
2225 | ||
2226 | err_umem_destroy: | |
2227 | mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, cmd.out, sizeof(cmd.out)); | |
2228 | err_umem_release: | |
2229 | ib_umem_release(obj->umem); | |
2230 | err_obj_free: | |
2231 | kfree(obj); | |
2232 | return err; | |
2233 | } | |
2234 | ||
2235 | static int devx_umem_cleanup(struct ib_uobject *uobject, | |
2236 | enum rdma_remove_reason why, | |
2237 | struct uverbs_attr_bundle *attrs) | |
2238 | { | |
2239 | struct devx_umem *obj = uobject->object; | |
2240 | u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; | |
2241 | int err; | |
2242 | ||
2243 | err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out)); | |
2244 | if (ib_is_destroy_retryable(err, why, uobject)) | |
2245 | return err; | |
2246 | ||
2247 | ib_umem_release(obj->umem); | |
2248 | kfree(obj); | |
2249 | return 0; | |
2250 | } | |
2251 | ||
2252 | static bool is_unaffiliated_event(struct mlx5_core_dev *dev, | |
2253 | unsigned long event_type) | |
2254 | { | |
2255 | __be64 *unaff_events; | |
2256 | int mask_entry; | |
2257 | int mask_bit; | |
2258 | ||
2259 | if (!MLX5_CAP_GEN(dev, event_cap)) | |
2260 | return is_legacy_unaffiliated_event_num(event_type); | |
2261 | ||
2262 | unaff_events = MLX5_CAP_DEV_EVENT(dev, | |
2263 | user_unaffiliated_events); | |
2264 | WARN_ON(event_type > MAX_SUPP_EVENT_NUM); | |
2265 | ||
2266 | mask_entry = event_type / 64; | |
2267 | mask_bit = event_type % 64; | |
2268 | ||
2269 | if (!(be64_to_cpu(unaff_events[mask_entry]) & (1ull << mask_bit))) | |
2270 | return false; | |
2271 | ||
2272 | return true; | |
2273 | } | |
2274 | ||
2275 | static u32 devx_get_obj_id_from_event(unsigned long event_type, void *data) | |
2276 | { | |
2277 | struct mlx5_eqe *eqe = data; | |
2278 | u32 obj_id = 0; | |
2279 | ||
2280 | switch (event_type) { | |
2281 | case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: | |
2282 | case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: | |
2283 | case MLX5_EVENT_TYPE_PATH_MIG: | |
2284 | case MLX5_EVENT_TYPE_COMM_EST: | |
2285 | case MLX5_EVENT_TYPE_SQ_DRAINED: | |
2286 | case MLX5_EVENT_TYPE_SRQ_LAST_WQE: | |
2287 | case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: | |
2288 | case MLX5_EVENT_TYPE_PATH_MIG_FAILED: | |
2289 | case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
2290 | case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: | |
2291 | obj_id = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff; | |
2292 | break; | |
2293 | case MLX5_EVENT_TYPE_XRQ_ERROR: | |
2294 | obj_id = be32_to_cpu(eqe->data.xrq_err.type_xrqn) & 0xffffff; | |
2295 | break; | |
2296 | case MLX5_EVENT_TYPE_DCT_DRAINED: | |
2297 | case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: | |
2298 | obj_id = be32_to_cpu(eqe->data.dct.dctn) & 0xffffff; | |
2299 | break; | |
2300 | case MLX5_EVENT_TYPE_CQ_ERROR: | |
2301 | obj_id = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff; | |
2302 | break; | |
2303 | default: | |
2304 | obj_id = MLX5_GET(affiliated_event_header, &eqe->data, obj_id); | |
2305 | break; | |
2306 | } | |
2307 | ||
2308 | return obj_id; | |
2309 | } | |
2310 | ||
2311 | static int deliver_event(struct devx_event_subscription *event_sub, | |
2312 | const void *data) | |
2313 | { | |
2314 | struct devx_async_event_file *ev_file; | |
2315 | struct devx_async_event_data *event_data; | |
2316 | unsigned long flags; | |
2317 | ||
2318 | ev_file = event_sub->ev_file; | |
2319 | ||
2320 | if (ev_file->omit_data) { | |
2321 | spin_lock_irqsave(&ev_file->lock, flags); | |
2322 | if (!list_empty(&event_sub->event_list) || | |
2323 | ev_file->is_destroyed) { | |
2324 | spin_unlock_irqrestore(&ev_file->lock, flags); | |
2325 | return 0; | |
2326 | } | |
2327 | ||
2328 | list_add_tail(&event_sub->event_list, &ev_file->event_list); | |
2329 | spin_unlock_irqrestore(&ev_file->lock, flags); | |
2330 | wake_up_interruptible(&ev_file->poll_wait); | |
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | event_data = kzalloc(sizeof(*event_data) + sizeof(struct mlx5_eqe), | |
2335 | GFP_ATOMIC); | |
2336 | if (!event_data) { | |
2337 | spin_lock_irqsave(&ev_file->lock, flags); | |
2338 | ev_file->is_overflow_err = 1; | |
2339 | spin_unlock_irqrestore(&ev_file->lock, flags); | |
2340 | return -ENOMEM; | |
2341 | } | |
2342 | ||
2343 | event_data->hdr.cookie = event_sub->cookie; | |
2344 | memcpy(event_data->hdr.out_data, data, sizeof(struct mlx5_eqe)); | |
2345 | ||
2346 | spin_lock_irqsave(&ev_file->lock, flags); | |
2347 | if (!ev_file->is_destroyed) | |
2348 | list_add_tail(&event_data->list, &ev_file->event_list); | |
2349 | else | |
2350 | kfree(event_data); | |
2351 | spin_unlock_irqrestore(&ev_file->lock, flags); | |
2352 | wake_up_interruptible(&ev_file->poll_wait); | |
2353 | ||
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | static void dispatch_event_fd(struct list_head *fd_list, | |
2358 | const void *data) | |
2359 | { | |
2360 | struct devx_event_subscription *item; | |
2361 | ||
2362 | list_for_each_entry_rcu(item, fd_list, xa_list) { | |
2363 | if (item->eventfd) | |
2364 | eventfd_signal(item->eventfd, 1); | |
2365 | else | |
2366 | deliver_event(item, data); | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | static int devx_event_notifier(struct notifier_block *nb, | |
2371 | unsigned long event_type, void *data) | |
2372 | { | |
2373 | struct mlx5_devx_event_table *table; | |
2374 | struct mlx5_ib_dev *dev; | |
2375 | struct devx_event *event; | |
2376 | struct devx_obj_event *obj_event; | |
2377 | u16 obj_type = 0; | |
2378 | bool is_unaffiliated; | |
2379 | u32 obj_id; | |
2380 | ||
2381 | /* Explicit filtering to kernel events which may occur frequently */ | |
2382 | if (event_type == MLX5_EVENT_TYPE_CMD || | |
2383 | event_type == MLX5_EVENT_TYPE_PAGE_REQUEST) | |
2384 | return NOTIFY_OK; | |
2385 | ||
2386 | table = container_of(nb, struct mlx5_devx_event_table, devx_nb.nb); | |
2387 | dev = container_of(table, struct mlx5_ib_dev, devx_event_table); | |
2388 | is_unaffiliated = is_unaffiliated_event(dev->mdev, event_type); | |
2389 | ||
2390 | if (!is_unaffiliated) | |
2391 | obj_type = get_event_obj_type(event_type, data); | |
2392 | ||
2393 | rcu_read_lock(); | |
2394 | event = xa_load(&table->event_xa, event_type | (obj_type << 16)); | |
2395 | if (!event) { | |
2396 | rcu_read_unlock(); | |
2397 | return NOTIFY_DONE; | |
2398 | } | |
2399 | ||
2400 | if (is_unaffiliated) { | |
2401 | dispatch_event_fd(&event->unaffiliated_list, data); | |
2402 | rcu_read_unlock(); | |
2403 | return NOTIFY_OK; | |
2404 | } | |
2405 | ||
2406 | obj_id = devx_get_obj_id_from_event(event_type, data); | |
2407 | obj_event = xa_load(&event->object_ids, obj_id); | |
2408 | if (!obj_event) { | |
2409 | rcu_read_unlock(); | |
2410 | return NOTIFY_DONE; | |
2411 | } | |
2412 | ||
2413 | dispatch_event_fd(&obj_event->obj_sub_list, data); | |
2414 | ||
2415 | rcu_read_unlock(); | |
2416 | return NOTIFY_OK; | |
2417 | } | |
2418 | ||
2419 | void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev) | |
2420 | { | |
2421 | struct mlx5_devx_event_table *table = &dev->devx_event_table; | |
2422 | ||
2423 | xa_init(&table->event_xa); | |
2424 | mutex_init(&table->event_xa_lock); | |
2425 | MLX5_NB_INIT(&table->devx_nb, devx_event_notifier, NOTIFY_ANY); | |
2426 | mlx5_eq_notifier_register(dev->mdev, &table->devx_nb); | |
2427 | } | |
2428 | ||
2429 | void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev) | |
2430 | { | |
2431 | struct mlx5_devx_event_table *table = &dev->devx_event_table; | |
2432 | struct devx_event_subscription *sub, *tmp; | |
2433 | struct devx_event *event; | |
2434 | void *entry; | |
2435 | unsigned long id; | |
2436 | ||
2437 | mlx5_eq_notifier_unregister(dev->mdev, &table->devx_nb); | |
2438 | mutex_lock(&dev->devx_event_table.event_xa_lock); | |
2439 | xa_for_each(&table->event_xa, id, entry) { | |
2440 | event = entry; | |
2441 | list_for_each_entry_safe(sub, tmp, &event->unaffiliated_list, | |
2442 | xa_list) | |
2443 | devx_cleanup_subscription(dev, sub); | |
2444 | kfree(entry); | |
2445 | } | |
2446 | mutex_unlock(&dev->devx_event_table.event_xa_lock); | |
2447 | xa_destroy(&table->event_xa); | |
2448 | } | |
2449 | ||
2450 | static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf, | |
2451 | size_t count, loff_t *pos) | |
2452 | { | |
2453 | struct devx_async_cmd_event_file *comp_ev_file = filp->private_data; | |
2454 | struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; | |
2455 | struct devx_async_data *event; | |
2456 | int ret = 0; | |
2457 | size_t eventsz; | |
2458 | ||
2459 | spin_lock_irq(&ev_queue->lock); | |
2460 | ||
2461 | while (list_empty(&ev_queue->event_list)) { | |
2462 | spin_unlock_irq(&ev_queue->lock); | |
2463 | ||
2464 | if (filp->f_flags & O_NONBLOCK) | |
2465 | return -EAGAIN; | |
2466 | ||
2467 | if (wait_event_interruptible( | |
2468 | ev_queue->poll_wait, | |
2469 | (!list_empty(&ev_queue->event_list) || | |
2470 | ev_queue->is_destroyed))) { | |
2471 | return -ERESTARTSYS; | |
2472 | } | |
2473 | ||
2474 | spin_lock_irq(&ev_queue->lock); | |
2475 | if (ev_queue->is_destroyed) { | |
2476 | spin_unlock_irq(&ev_queue->lock); | |
2477 | return -EIO; | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | event = list_entry(ev_queue->event_list.next, | |
2482 | struct devx_async_data, list); | |
2483 | eventsz = event->cmd_out_len + | |
2484 | sizeof(struct mlx5_ib_uapi_devx_async_cmd_hdr); | |
2485 | ||
2486 | if (eventsz > count) { | |
2487 | spin_unlock_irq(&ev_queue->lock); | |
2488 | return -ENOSPC; | |
2489 | } | |
2490 | ||
2491 | list_del(ev_queue->event_list.next); | |
2492 | spin_unlock_irq(&ev_queue->lock); | |
2493 | ||
2494 | if (copy_to_user(buf, &event->hdr, eventsz)) | |
2495 | ret = -EFAULT; | |
2496 | else | |
2497 | ret = eventsz; | |
2498 | ||
2499 | atomic_sub(event->cmd_out_len, &ev_queue->bytes_in_use); | |
2500 | kvfree(event); | |
2501 | return ret; | |
2502 | } | |
2503 | ||
2504 | static __poll_t devx_async_cmd_event_poll(struct file *filp, | |
2505 | struct poll_table_struct *wait) | |
2506 | { | |
2507 | struct devx_async_cmd_event_file *comp_ev_file = filp->private_data; | |
2508 | struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; | |
2509 | __poll_t pollflags = 0; | |
2510 | ||
2511 | poll_wait(filp, &ev_queue->poll_wait, wait); | |
2512 | ||
2513 | spin_lock_irq(&ev_queue->lock); | |
2514 | if (ev_queue->is_destroyed) | |
2515 | pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP; | |
2516 | else if (!list_empty(&ev_queue->event_list)) | |
2517 | pollflags = EPOLLIN | EPOLLRDNORM; | |
2518 | spin_unlock_irq(&ev_queue->lock); | |
2519 | ||
2520 | return pollflags; | |
2521 | } | |
2522 | ||
2523 | static const struct file_operations devx_async_cmd_event_fops = { | |
2524 | .owner = THIS_MODULE, | |
2525 | .read = devx_async_cmd_event_read, | |
2526 | .poll = devx_async_cmd_event_poll, | |
2527 | .release = uverbs_uobject_fd_release, | |
2528 | .llseek = no_llseek, | |
2529 | }; | |
2530 | ||
2531 | static ssize_t devx_async_event_read(struct file *filp, char __user *buf, | |
2532 | size_t count, loff_t *pos) | |
2533 | { | |
2534 | struct devx_async_event_file *ev_file = filp->private_data; | |
2535 | struct devx_event_subscription *event_sub; | |
2536 | struct devx_async_event_data *uninitialized_var(event); | |
2537 | int ret = 0; | |
2538 | size_t eventsz; | |
2539 | bool omit_data; | |
2540 | void *event_data; | |
2541 | ||
2542 | omit_data = ev_file->omit_data; | |
2543 | ||
2544 | spin_lock_irq(&ev_file->lock); | |
2545 | ||
2546 | if (ev_file->is_overflow_err) { | |
2547 | ev_file->is_overflow_err = 0; | |
2548 | spin_unlock_irq(&ev_file->lock); | |
2549 | return -EOVERFLOW; | |
2550 | } | |
2551 | ||
2552 | ||
2553 | while (list_empty(&ev_file->event_list)) { | |
2554 | spin_unlock_irq(&ev_file->lock); | |
2555 | ||
2556 | if (filp->f_flags & O_NONBLOCK) | |
2557 | return -EAGAIN; | |
2558 | ||
2559 | if (wait_event_interruptible(ev_file->poll_wait, | |
2560 | (!list_empty(&ev_file->event_list) || | |
2561 | ev_file->is_destroyed))) { | |
2562 | return -ERESTARTSYS; | |
2563 | } | |
2564 | ||
2565 | spin_lock_irq(&ev_file->lock); | |
2566 | if (ev_file->is_destroyed) { | |
2567 | spin_unlock_irq(&ev_file->lock); | |
2568 | return -EIO; | |
2569 | } | |
2570 | } | |
2571 | ||
2572 | if (omit_data) { | |
2573 | event_sub = list_first_entry(&ev_file->event_list, | |
2574 | struct devx_event_subscription, | |
2575 | event_list); | |
2576 | eventsz = sizeof(event_sub->cookie); | |
2577 | event_data = &event_sub->cookie; | |
2578 | } else { | |
2579 | event = list_first_entry(&ev_file->event_list, | |
2580 | struct devx_async_event_data, list); | |
2581 | eventsz = sizeof(struct mlx5_eqe) + | |
2582 | sizeof(struct mlx5_ib_uapi_devx_async_event_hdr); | |
2583 | event_data = &event->hdr; | |
2584 | } | |
2585 | ||
2586 | if (eventsz > count) { | |
2587 | spin_unlock_irq(&ev_file->lock); | |
2588 | return -EINVAL; | |
2589 | } | |
2590 | ||
2591 | if (omit_data) | |
2592 | list_del_init(&event_sub->event_list); | |
2593 | else | |
2594 | list_del(&event->list); | |
2595 | ||
2596 | spin_unlock_irq(&ev_file->lock); | |
2597 | ||
2598 | if (copy_to_user(buf, event_data, eventsz)) | |
2599 | /* This points to an application issue, not a kernel concern */ | |
2600 | ret = -EFAULT; | |
2601 | else | |
2602 | ret = eventsz; | |
2603 | ||
2604 | if (!omit_data) | |
2605 | kfree(event); | |
2606 | return ret; | |
2607 | } | |
2608 | ||
2609 | static __poll_t devx_async_event_poll(struct file *filp, | |
2610 | struct poll_table_struct *wait) | |
2611 | { | |
2612 | struct devx_async_event_file *ev_file = filp->private_data; | |
2613 | __poll_t pollflags = 0; | |
2614 | ||
2615 | poll_wait(filp, &ev_file->poll_wait, wait); | |
2616 | ||
2617 | spin_lock_irq(&ev_file->lock); | |
2618 | if (ev_file->is_destroyed) | |
2619 | pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP; | |
2620 | else if (!list_empty(&ev_file->event_list)) | |
2621 | pollflags = EPOLLIN | EPOLLRDNORM; | |
2622 | spin_unlock_irq(&ev_file->lock); | |
2623 | ||
2624 | return pollflags; | |
2625 | } | |
2626 | ||
2627 | static void devx_free_subscription(struct rcu_head *rcu) | |
2628 | { | |
2629 | struct devx_event_subscription *event_sub = | |
2630 | container_of(rcu, struct devx_event_subscription, rcu); | |
2631 | ||
2632 | if (event_sub->eventfd) | |
2633 | eventfd_ctx_put(event_sub->eventfd); | |
2634 | uverbs_uobject_put(&event_sub->ev_file->uobj); | |
2635 | kfree(event_sub); | |
2636 | } | |
2637 | ||
2638 | static const struct file_operations devx_async_event_fops = { | |
2639 | .owner = THIS_MODULE, | |
2640 | .read = devx_async_event_read, | |
2641 | .poll = devx_async_event_poll, | |
2642 | .release = uverbs_uobject_fd_release, | |
2643 | .llseek = no_llseek, | |
2644 | }; | |
2645 | ||
2646 | static int devx_async_cmd_event_destroy_uobj(struct ib_uobject *uobj, | |
2647 | enum rdma_remove_reason why) | |
2648 | { | |
2649 | struct devx_async_cmd_event_file *comp_ev_file = | |
2650 | container_of(uobj, struct devx_async_cmd_event_file, | |
2651 | uobj); | |
2652 | struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; | |
2653 | struct devx_async_data *entry, *tmp; | |
2654 | ||
2655 | spin_lock_irq(&ev_queue->lock); | |
2656 | ev_queue->is_destroyed = 1; | |
2657 | spin_unlock_irq(&ev_queue->lock); | |
2658 | wake_up_interruptible(&ev_queue->poll_wait); | |
2659 | ||
2660 | mlx5_cmd_cleanup_async_ctx(&comp_ev_file->async_ctx); | |
2661 | ||
2662 | spin_lock_irq(&comp_ev_file->ev_queue.lock); | |
2663 | list_for_each_entry_safe(entry, tmp, | |
2664 | &comp_ev_file->ev_queue.event_list, list) { | |
2665 | list_del(&entry->list); | |
2666 | kvfree(entry); | |
2667 | } | |
2668 | spin_unlock_irq(&comp_ev_file->ev_queue.lock); | |
2669 | return 0; | |
2670 | }; | |
2671 | ||
2672 | static int devx_async_event_destroy_uobj(struct ib_uobject *uobj, | |
2673 | enum rdma_remove_reason why) | |
2674 | { | |
2675 | struct devx_async_event_file *ev_file = | |
2676 | container_of(uobj, struct devx_async_event_file, | |
2677 | uobj); | |
2678 | struct devx_event_subscription *event_sub, *event_sub_tmp; | |
2679 | struct mlx5_ib_dev *dev = ev_file->dev; | |
2680 | ||
2681 | spin_lock_irq(&ev_file->lock); | |
2682 | ev_file->is_destroyed = 1; | |
2683 | ||
2684 | /* free the pending events allocation */ | |
2685 | if (ev_file->omit_data) { | |
2686 | struct devx_event_subscription *event_sub, *tmp; | |
2687 | ||
2688 | list_for_each_entry_safe(event_sub, tmp, &ev_file->event_list, | |
2689 | event_list) | |
2690 | list_del_init(&event_sub->event_list); | |
2691 | ||
2692 | } else { | |
2693 | struct devx_async_event_data *entry, *tmp; | |
2694 | ||
2695 | list_for_each_entry_safe(entry, tmp, &ev_file->event_list, | |
2696 | list) { | |
2697 | list_del(&entry->list); | |
2698 | kfree(entry); | |
2699 | } | |
2700 | } | |
2701 | ||
2702 | spin_unlock_irq(&ev_file->lock); | |
2703 | wake_up_interruptible(&ev_file->poll_wait); | |
2704 | ||
2705 | mutex_lock(&dev->devx_event_table.event_xa_lock); | |
2706 | /* delete the subscriptions which are related to this FD */ | |
2707 | list_for_each_entry_safe(event_sub, event_sub_tmp, | |
2708 | &ev_file->subscribed_events_list, file_list) { | |
2709 | devx_cleanup_subscription(dev, event_sub); | |
2710 | list_del_rcu(&event_sub->file_list); | |
2711 | /* subscription may not be used by the read API any more */ | |
2712 | call_rcu(&event_sub->rcu, devx_free_subscription); | |
2713 | } | |
2714 | mutex_unlock(&dev->devx_event_table.event_xa_lock); | |
2715 | ||
2716 | put_device(&dev->ib_dev.dev); | |
2717 | return 0; | |
2718 | }; | |
2719 | ||
2720 | DECLARE_UVERBS_NAMED_METHOD( | |
2721 | MLX5_IB_METHOD_DEVX_UMEM_REG, | |
2722 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE, | |
2723 | MLX5_IB_OBJECT_DEVX_UMEM, | |
2724 | UVERBS_ACCESS_NEW, | |
2725 | UA_MANDATORY), | |
2726 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR, | |
2727 | UVERBS_ATTR_TYPE(u64), | |
2728 | UA_MANDATORY), | |
2729 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN, | |
2730 | UVERBS_ATTR_TYPE(u64), | |
2731 | UA_MANDATORY), | |
2732 | UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, | |
2733 | enum ib_access_flags), | |
2734 | UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, | |
2735 | UVERBS_ATTR_TYPE(u32), | |
2736 | UA_MANDATORY)); | |
2737 | ||
2738 | DECLARE_UVERBS_NAMED_METHOD_DESTROY( | |
2739 | MLX5_IB_METHOD_DEVX_UMEM_DEREG, | |
2740 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE, | |
2741 | MLX5_IB_OBJECT_DEVX_UMEM, | |
2742 | UVERBS_ACCESS_DESTROY, | |
2743 | UA_MANDATORY)); | |
2744 | ||
2745 | DECLARE_UVERBS_NAMED_METHOD( | |
2746 | MLX5_IB_METHOD_DEVX_QUERY_EQN, | |
2747 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC, | |
2748 | UVERBS_ATTR_TYPE(u32), | |
2749 | UA_MANDATORY), | |
2750 | UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, | |
2751 | UVERBS_ATTR_TYPE(u32), | |
2752 | UA_MANDATORY)); | |
2753 | ||
2754 | DECLARE_UVERBS_NAMED_METHOD( | |
2755 | MLX5_IB_METHOD_DEVX_QUERY_UAR, | |
2756 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX, | |
2757 | UVERBS_ATTR_TYPE(u32), | |
2758 | UA_MANDATORY), | |
2759 | UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX, | |
2760 | UVERBS_ATTR_TYPE(u32), | |
2761 | UA_MANDATORY)); | |
2762 | ||
2763 | DECLARE_UVERBS_NAMED_METHOD( | |
2764 | MLX5_IB_METHOD_DEVX_OTHER, | |
2765 | UVERBS_ATTR_PTR_IN( | |
2766 | MLX5_IB_ATTR_DEVX_OTHER_CMD_IN, | |
2767 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), | |
2768 | UA_MANDATORY, | |
2769 | UA_ALLOC_AND_COPY), | |
2770 | UVERBS_ATTR_PTR_OUT( | |
2771 | MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, | |
2772 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), | |
2773 | UA_MANDATORY)); | |
2774 | ||
2775 | DECLARE_UVERBS_NAMED_METHOD( | |
2776 | MLX5_IB_METHOD_DEVX_OBJ_CREATE, | |
2777 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE, | |
2778 | MLX5_IB_OBJECT_DEVX_OBJ, | |
2779 | UVERBS_ACCESS_NEW, | |
2780 | UA_MANDATORY), | |
2781 | UVERBS_ATTR_PTR_IN( | |
2782 | MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN, | |
2783 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), | |
2784 | UA_MANDATORY, | |
2785 | UA_ALLOC_AND_COPY), | |
2786 | UVERBS_ATTR_PTR_OUT( | |
2787 | MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, | |
2788 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), | |
2789 | UA_MANDATORY)); | |
2790 | ||
2791 | DECLARE_UVERBS_NAMED_METHOD_DESTROY( | |
2792 | MLX5_IB_METHOD_DEVX_OBJ_DESTROY, | |
2793 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE, | |
2794 | MLX5_IB_OBJECT_DEVX_OBJ, | |
2795 | UVERBS_ACCESS_DESTROY, | |
2796 | UA_MANDATORY)); | |
2797 | ||
2798 | DECLARE_UVERBS_NAMED_METHOD( | |
2799 | MLX5_IB_METHOD_DEVX_OBJ_MODIFY, | |
2800 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE, | |
2801 | UVERBS_IDR_ANY_OBJECT, | |
2802 | UVERBS_ACCESS_WRITE, | |
2803 | UA_MANDATORY), | |
2804 | UVERBS_ATTR_PTR_IN( | |
2805 | MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN, | |
2806 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), | |
2807 | UA_MANDATORY, | |
2808 | UA_ALLOC_AND_COPY), | |
2809 | UVERBS_ATTR_PTR_OUT( | |
2810 | MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT, | |
2811 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), | |
2812 | UA_MANDATORY)); | |
2813 | ||
2814 | DECLARE_UVERBS_NAMED_METHOD( | |
2815 | MLX5_IB_METHOD_DEVX_OBJ_QUERY, | |
2816 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE, | |
2817 | UVERBS_IDR_ANY_OBJECT, | |
2818 | UVERBS_ACCESS_READ, | |
2819 | UA_MANDATORY), | |
2820 | UVERBS_ATTR_PTR_IN( | |
2821 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN, | |
2822 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), | |
2823 | UA_MANDATORY, | |
2824 | UA_ALLOC_AND_COPY), | |
2825 | UVERBS_ATTR_PTR_OUT( | |
2826 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, | |
2827 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), | |
2828 | UA_MANDATORY)); | |
2829 | ||
2830 | DECLARE_UVERBS_NAMED_METHOD( | |
2831 | MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY, | |
2832 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE, | |
2833 | UVERBS_IDR_ANY_OBJECT, | |
2834 | UVERBS_ACCESS_READ, | |
2835 | UA_MANDATORY), | |
2836 | UVERBS_ATTR_PTR_IN( | |
2837 | MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN, | |
2838 | UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), | |
2839 | UA_MANDATORY, | |
2840 | UA_ALLOC_AND_COPY), | |
2841 | UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN, | |
2842 | u16, UA_MANDATORY), | |
2843 | UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD, | |
2844 | MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, | |
2845 | UVERBS_ACCESS_READ, | |
2846 | UA_MANDATORY), | |
2847 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID, | |
2848 | UVERBS_ATTR_TYPE(u64), | |
2849 | UA_MANDATORY)); | |
2850 | ||
2851 | DECLARE_UVERBS_NAMED_METHOD( | |
2852 | MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT, | |
2853 | UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE, | |
2854 | MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, | |
2855 | UVERBS_ACCESS_READ, | |
2856 | UA_MANDATORY), | |
2857 | UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE, | |
2858 | MLX5_IB_OBJECT_DEVX_OBJ, | |
2859 | UVERBS_ACCESS_READ, | |
2860 | UA_OPTIONAL), | |
2861 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST, | |
2862 | UVERBS_ATTR_MIN_SIZE(sizeof(u16)), | |
2863 | UA_MANDATORY, | |
2864 | UA_ALLOC_AND_COPY), | |
2865 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE, | |
2866 | UVERBS_ATTR_TYPE(u64), | |
2867 | UA_OPTIONAL), | |
2868 | UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM, | |
2869 | UVERBS_ATTR_TYPE(u32), | |
2870 | UA_OPTIONAL)); | |
2871 | ||
2872 | DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX, | |
2873 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER), | |
2874 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR), | |
2875 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN), | |
2876 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)); | |
2877 | ||
2878 | DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ, | |
2879 | UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup), | |
2880 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE), | |
2881 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY), | |
2882 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY), | |
2883 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY), | |
2884 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)); | |
2885 | ||
2886 | DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM, | |
2887 | UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup), | |
2888 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG), | |
2889 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG)); | |
2890 | ||
2891 | ||
2892 | DECLARE_UVERBS_NAMED_METHOD( | |
2893 | MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC, | |
2894 | UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE, | |
2895 | MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, | |
2896 | UVERBS_ACCESS_NEW, | |
2897 | UA_MANDATORY)); | |
2898 | ||
2899 | DECLARE_UVERBS_NAMED_OBJECT( | |
2900 | MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, | |
2901 | UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_cmd_event_file), | |
2902 | devx_async_cmd_event_destroy_uobj, | |
2903 | &devx_async_cmd_event_fops, "[devx_async_cmd]", | |
2904 | O_RDONLY), | |
2905 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)); | |
2906 | ||
2907 | DECLARE_UVERBS_NAMED_METHOD( | |
2908 | MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC, | |
2909 | UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE, | |
2910 | MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, | |
2911 | UVERBS_ACCESS_NEW, | |
2912 | UA_MANDATORY), | |
2913 | UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, | |
2914 | enum mlx5_ib_uapi_devx_create_event_channel_flags, | |
2915 | UA_MANDATORY)); | |
2916 | ||
2917 | DECLARE_UVERBS_NAMED_OBJECT( | |
2918 | MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, | |
2919 | UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file), | |
2920 | devx_async_event_destroy_uobj, | |
2921 | &devx_async_event_fops, "[devx_async_event]", | |
2922 | O_RDONLY), | |
2923 | &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)); | |
2924 | ||
2925 | static bool devx_is_supported(struct ib_device *device) | |
2926 | { | |
2927 | struct mlx5_ib_dev *dev = to_mdev(device); | |
2928 | ||
2929 | return MLX5_CAP_GEN(dev->mdev, log_max_uctx); | |
2930 | } | |
2931 | ||
2932 | const struct uapi_definition mlx5_ib_devx_defs[] = { | |
2933 | UAPI_DEF_CHAIN_OBJ_TREE_NAMED( | |
2934 | MLX5_IB_OBJECT_DEVX, | |
2935 | UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), | |
2936 | UAPI_DEF_CHAIN_OBJ_TREE_NAMED( | |
2937 | MLX5_IB_OBJECT_DEVX_OBJ, | |
2938 | UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), | |
2939 | UAPI_DEF_CHAIN_OBJ_TREE_NAMED( | |
2940 | MLX5_IB_OBJECT_DEVX_UMEM, | |
2941 | UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), | |
2942 | UAPI_DEF_CHAIN_OBJ_TREE_NAMED( | |
2943 | MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, | |
2944 | UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), | |
2945 | UAPI_DEF_CHAIN_OBJ_TREE_NAMED( | |
2946 | MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, | |
2947 | UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), | |
2948 | {}, | |
2949 | }; |