Commit | Line | Data |
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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
f7c6a7b5 | 3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
eb9d3cd5 | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
8bdb0e86 | 5 | * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
bc38a6ab RD |
6 | * |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
bc38a6ab RD |
34 | */ |
35 | ||
6b73597e | 36 | #include <linux/file.h> |
70a30e16 | 37 | #include <linux/fs.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
8ada2c1c | 39 | #include <linux/sched.h> |
6b73597e | 40 | |
bc38a6ab RD |
41 | #include <asm/uaccess.h> |
42 | ||
43 | #include "uverbs.h" | |
ed4c54e5 | 44 | #include "core_priv.h" |
bc38a6ab | 45 | |
3bea57a5 RD |
46 | struct uverbs_lock_class { |
47 | struct lock_class_key key; | |
48 | char name[16]; | |
49 | }; | |
50 | ||
51 | static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" }; | |
52 | static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" }; | |
6b52a12b | 53 | static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" }; |
3bea57a5 RD |
54 | static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" }; |
55 | static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" }; | |
56 | static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" }; | |
57 | static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" }; | |
58 | static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" }; | |
436f2ad0 | 59 | static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" }; |
bc38a6ab | 60 | |
9ead190b RD |
61 | /* |
62 | * The ib_uobject locking scheme is as follows: | |
63 | * | |
64 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
d144da8c | 65 | * needs to be held during all idr write operations. When an object is |
9ead190b | 66 | * looked up, a reference must be taken on the object's kref before |
d144da8c MM |
67 | * dropping this lock. For read operations, the rcu_read_lock() |
68 | * and rcu_write_lock() but similarly the kref reference is grabbed | |
69 | * before the rcu_read_unlock(). | |
9ead190b RD |
70 | * |
71 | * - Each object also has an rwsem. This rwsem must be held for | |
72 | * reading while an operation that uses the object is performed. | |
73 | * For example, while registering an MR, the associated PD's | |
74 | * uobject.mutex must be held for reading. The rwsem must be held | |
75 | * for writing while initializing or destroying an object. | |
76 | * | |
77 | * - In addition, each object has a "live" flag. If this flag is not | |
78 | * set, then lookups of the object will fail even if it is found in | |
79 | * the idr. This handles a reader that blocks and does not acquire | |
80 | * the rwsem until after the object is destroyed. The destroy | |
81 | * operation will set the live flag to 0 and then drop the rwsem; | |
82 | * this will allow the reader to acquire the rwsem, see that the | |
83 | * live flag is 0, and then drop the rwsem and its reference to | |
84 | * object. The underlying storage will not be freed until the last | |
85 | * reference to the object is dropped. | |
86 | */ | |
87 | ||
88 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
3bea57a5 | 89 | struct ib_ucontext *context, struct uverbs_lock_class *c) |
9ead190b RD |
90 | { |
91 | uobj->user_handle = user_handle; | |
92 | uobj->context = context; | |
93 | kref_init(&uobj->ref); | |
94 | init_rwsem(&uobj->mutex); | |
3bea57a5 | 95 | lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name); |
9ead190b RD |
96 | uobj->live = 0; |
97 | } | |
98 | ||
99 | static void release_uobj(struct kref *kref) | |
100 | { | |
d144da8c | 101 | kfree_rcu(container_of(kref, struct ib_uobject, ref), rcu); |
9ead190b RD |
102 | } |
103 | ||
104 | static void put_uobj(struct ib_uobject *uobj) | |
105 | { | |
106 | kref_put(&uobj->ref, release_uobj); | |
107 | } | |
108 | ||
109 | static void put_uobj_read(struct ib_uobject *uobj) | |
110 | { | |
111 | up_read(&uobj->mutex); | |
112 | put_uobj(uobj); | |
113 | } | |
114 | ||
115 | static void put_uobj_write(struct ib_uobject *uobj) | |
116 | { | |
117 | up_write(&uobj->mutex); | |
118 | put_uobj(uobj); | |
119 | } | |
120 | ||
121 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
122 | { |
123 | int ret; | |
124 | ||
3b069c5d | 125 | idr_preload(GFP_KERNEL); |
9ead190b | 126 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 127 | |
3b069c5d TH |
128 | ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT); |
129 | if (ret >= 0) | |
130 | uobj->id = ret; | |
131 | ||
132 | spin_unlock(&ib_uverbs_idr_lock); | |
133 | idr_preload_end(); | |
3463175d | 134 | |
3b069c5d | 135 | return ret < 0 ? ret : 0; |
3463175d RD |
136 | } |
137 | ||
9ead190b RD |
138 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
139 | { | |
140 | spin_lock(&ib_uverbs_idr_lock); | |
141 | idr_remove(idr, uobj->id); | |
142 | spin_unlock(&ib_uverbs_idr_lock); | |
143 | } | |
144 | ||
145 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
146 | struct ib_ucontext *context) | |
147 | { | |
148 | struct ib_uobject *uobj; | |
149 | ||
d144da8c | 150 | rcu_read_lock(); |
9ead190b | 151 | uobj = idr_find(idr, id); |
cbfb50e6 RD |
152 | if (uobj) { |
153 | if (uobj->context == context) | |
154 | kref_get(&uobj->ref); | |
155 | else | |
156 | uobj = NULL; | |
157 | } | |
d144da8c | 158 | rcu_read_unlock(); |
9ead190b RD |
159 | |
160 | return uobj; | |
161 | } | |
162 | ||
163 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 164 | struct ib_ucontext *context, int nested) |
9ead190b RD |
165 | { |
166 | struct ib_uobject *uobj; | |
167 | ||
168 | uobj = __idr_get_uobj(idr, id, context); | |
169 | if (!uobj) | |
170 | return NULL; | |
171 | ||
1ccf6aa1 RD |
172 | if (nested) |
173 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
174 | else | |
175 | down_read(&uobj->mutex); | |
9ead190b RD |
176 | if (!uobj->live) { |
177 | put_uobj_read(uobj); | |
178 | return NULL; | |
179 | } | |
180 | ||
181 | return uobj; | |
182 | } | |
183 | ||
184 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
185 | struct ib_ucontext *context) | |
186 | { | |
187 | struct ib_uobject *uobj; | |
188 | ||
189 | uobj = __idr_get_uobj(idr, id, context); | |
190 | if (!uobj) | |
191 | return NULL; | |
192 | ||
193 | down_write(&uobj->mutex); | |
194 | if (!uobj->live) { | |
195 | put_uobj_write(uobj); | |
196 | return NULL; | |
197 | } | |
198 | ||
199 | return uobj; | |
200 | } | |
201 | ||
1ccf6aa1 RD |
202 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
203 | int nested) | |
9ead190b RD |
204 | { |
205 | struct ib_uobject *uobj; | |
206 | ||
1ccf6aa1 | 207 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
208 | return uobj ? uobj->object : NULL; |
209 | } | |
210 | ||
211 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
212 | { | |
1ccf6aa1 | 213 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
214 | } |
215 | ||
216 | static void put_pd_read(struct ib_pd *pd) | |
217 | { | |
218 | put_uobj_read(pd->uobject); | |
219 | } | |
220 | ||
1ccf6aa1 | 221 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 222 | { |
1ccf6aa1 | 223 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
224 | } |
225 | ||
226 | static void put_cq_read(struct ib_cq *cq) | |
227 | { | |
228 | put_uobj_read(cq->uobject); | |
229 | } | |
230 | ||
231 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
232 | { | |
1ccf6aa1 | 233 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
234 | } |
235 | ||
236 | static void put_ah_read(struct ib_ah *ah) | |
237 | { | |
238 | put_uobj_read(ah->uobject); | |
239 | } | |
240 | ||
241 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
242 | { | |
1ccf6aa1 | 243 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
244 | } |
245 | ||
e214a0fe EC |
246 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
247 | { | |
248 | struct ib_uobject *uobj; | |
249 | ||
250 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); | |
251 | return uobj ? uobj->object : NULL; | |
252 | } | |
253 | ||
9ead190b RD |
254 | static void put_qp_read(struct ib_qp *qp) |
255 | { | |
256 | put_uobj_read(qp->uobject); | |
257 | } | |
258 | ||
e214a0fe EC |
259 | static void put_qp_write(struct ib_qp *qp) |
260 | { | |
261 | put_uobj_write(qp->uobject); | |
262 | } | |
263 | ||
9ead190b RD |
264 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
265 | { | |
1ccf6aa1 | 266 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
267 | } |
268 | ||
269 | static void put_srq_read(struct ib_srq *srq) | |
270 | { | |
271 | put_uobj_read(srq->uobject); | |
272 | } | |
273 | ||
53d0bd1e SH |
274 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
275 | struct ib_uobject **uobj) | |
276 | { | |
277 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); | |
278 | return *uobj ? (*uobj)->object : NULL; | |
279 | } | |
280 | ||
281 | static void put_xrcd_read(struct ib_uobject *uobj) | |
282 | { | |
283 | put_uobj_read(uobj); | |
284 | } | |
285 | ||
bc38a6ab | 286 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
057aec0d | 287 | struct ib_device *ib_dev, |
bc38a6ab RD |
288 | const char __user *buf, |
289 | int in_len, int out_len) | |
290 | { | |
291 | struct ib_uverbs_get_context cmd; | |
292 | struct ib_uverbs_get_context_resp resp; | |
293 | struct ib_udata udata; | |
63c47c28 | 294 | struct ib_ucontext *ucontext; |
6b73597e | 295 | struct file *filp; |
63c47c28 | 296 | int ret; |
bc38a6ab RD |
297 | |
298 | if (out_len < sizeof resp) | |
299 | return -ENOSPC; | |
300 | ||
301 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
302 | return -EFAULT; | |
303 | ||
95ed644f | 304 | mutex_lock(&file->mutex); |
63c47c28 RD |
305 | |
306 | if (file->ucontext) { | |
307 | ret = -EINVAL; | |
308 | goto err; | |
309 | } | |
310 | ||
bc38a6ab RD |
311 | INIT_UDATA(&udata, buf + sizeof cmd, |
312 | (unsigned long) cmd.response + sizeof resp, | |
313 | in_len - sizeof cmd, out_len - sizeof resp); | |
314 | ||
057aec0d | 315 | ucontext = ib_dev->alloc_ucontext(ib_dev, &udata); |
77f76013 | 316 | if (IS_ERR(ucontext)) { |
df42245a | 317 | ret = PTR_ERR(ucontext); |
77f76013 GC |
318 | goto err; |
319 | } | |
bc38a6ab | 320 | |
057aec0d | 321 | ucontext->device = ib_dev; |
63c47c28 RD |
322 | INIT_LIST_HEAD(&ucontext->pd_list); |
323 | INIT_LIST_HEAD(&ucontext->mr_list); | |
324 | INIT_LIST_HEAD(&ucontext->mw_list); | |
325 | INIT_LIST_HEAD(&ucontext->cq_list); | |
326 | INIT_LIST_HEAD(&ucontext->qp_list); | |
327 | INIT_LIST_HEAD(&ucontext->srq_list); | |
328 | INIT_LIST_HEAD(&ucontext->ah_list); | |
53d0bd1e | 329 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
436f2ad0 | 330 | INIT_LIST_HEAD(&ucontext->rule_list); |
8ada2c1c SR |
331 | rcu_read_lock(); |
332 | ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID); | |
333 | rcu_read_unlock(); | |
f7c6a7b5 | 334 | ucontext->closing = 0; |
bc38a6ab | 335 | |
882214e2 HE |
336 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
337 | ucontext->umem_tree = RB_ROOT; | |
338 | init_rwsem(&ucontext->umem_rwsem); | |
339 | ucontext->odp_mrs_count = 0; | |
340 | INIT_LIST_HEAD(&ucontext->no_private_counters); | |
341 | ||
86bee4c9 | 342 | if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) |
882214e2 HE |
343 | ucontext->invalidate_range = NULL; |
344 | ||
345 | #endif | |
346 | ||
6b73597e RD |
347 | resp.num_comp_vectors = file->device->num_comp_vectors; |
348 | ||
da183c7a | 349 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
350 | if (ret < 0) |
351 | goto err_free; | |
352 | resp.async_fd = ret; | |
353 | ||
057aec0d | 354 | filp = ib_uverbs_alloc_event_file(file, ib_dev, 1); |
6b73597e RD |
355 | if (IS_ERR(filp)) { |
356 | ret = PTR_ERR(filp); | |
b1e4594b | 357 | goto err_fd; |
6b73597e | 358 | } |
bc38a6ab RD |
359 | |
360 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
361 | &resp, sizeof resp)) { |
362 | ret = -EFAULT; | |
6b73597e | 363 | goto err_file; |
63c47c28 RD |
364 | } |
365 | ||
70a30e16 | 366 | file->ucontext = ucontext; |
6b73597e RD |
367 | |
368 | fd_install(resp.async_fd, filp); | |
369 | ||
95ed644f | 370 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
371 | |
372 | return in_len; | |
373 | ||
6b73597e | 374 | err_file: |
03c40442 | 375 | ib_uverbs_free_async_event_file(file); |
6b73597e RD |
376 | fput(filp); |
377 | ||
b1e4594b AV |
378 | err_fd: |
379 | put_unused_fd(resp.async_fd); | |
380 | ||
63c47c28 | 381 | err_free: |
8ada2c1c | 382 | put_pid(ucontext->tgid); |
057aec0d | 383 | ib_dev->dealloc_ucontext(ucontext); |
bc38a6ab | 384 | |
63c47c28 | 385 | err: |
95ed644f | 386 | mutex_unlock(&file->mutex); |
63c47c28 | 387 | return ret; |
bc38a6ab RD |
388 | } |
389 | ||
02d1aa7a | 390 | static void copy_query_dev_fields(struct ib_uverbs_file *file, |
057aec0d | 391 | struct ib_device *ib_dev, |
02d1aa7a EC |
392 | struct ib_uverbs_query_device_resp *resp, |
393 | struct ib_device_attr *attr) | |
394 | { | |
395 | resp->fw_ver = attr->fw_ver; | |
057aec0d | 396 | resp->node_guid = ib_dev->node_guid; |
02d1aa7a EC |
397 | resp->sys_image_guid = attr->sys_image_guid; |
398 | resp->max_mr_size = attr->max_mr_size; | |
399 | resp->page_size_cap = attr->page_size_cap; | |
400 | resp->vendor_id = attr->vendor_id; | |
401 | resp->vendor_part_id = attr->vendor_part_id; | |
402 | resp->hw_ver = attr->hw_ver; | |
403 | resp->max_qp = attr->max_qp; | |
404 | resp->max_qp_wr = attr->max_qp_wr; | |
fb532d6a | 405 | resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); |
02d1aa7a EC |
406 | resp->max_sge = attr->max_sge; |
407 | resp->max_sge_rd = attr->max_sge_rd; | |
408 | resp->max_cq = attr->max_cq; | |
409 | resp->max_cqe = attr->max_cqe; | |
410 | resp->max_mr = attr->max_mr; | |
411 | resp->max_pd = attr->max_pd; | |
412 | resp->max_qp_rd_atom = attr->max_qp_rd_atom; | |
413 | resp->max_ee_rd_atom = attr->max_ee_rd_atom; | |
414 | resp->max_res_rd_atom = attr->max_res_rd_atom; | |
415 | resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; | |
416 | resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; | |
417 | resp->atomic_cap = attr->atomic_cap; | |
418 | resp->max_ee = attr->max_ee; | |
419 | resp->max_rdd = attr->max_rdd; | |
420 | resp->max_mw = attr->max_mw; | |
421 | resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; | |
422 | resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; | |
423 | resp->max_mcast_grp = attr->max_mcast_grp; | |
424 | resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; | |
425 | resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; | |
426 | resp->max_ah = attr->max_ah; | |
427 | resp->max_fmr = attr->max_fmr; | |
428 | resp->max_map_per_fmr = attr->max_map_per_fmr; | |
429 | resp->max_srq = attr->max_srq; | |
430 | resp->max_srq_wr = attr->max_srq_wr; | |
431 | resp->max_srq_sge = attr->max_srq_sge; | |
432 | resp->max_pkeys = attr->max_pkeys; | |
433 | resp->local_ca_ack_delay = attr->local_ca_ack_delay; | |
057aec0d | 434 | resp->phys_port_cnt = ib_dev->phys_port_cnt; |
02d1aa7a EC |
435 | } |
436 | ||
bc38a6ab | 437 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
057aec0d | 438 | struct ib_device *ib_dev, |
bc38a6ab RD |
439 | const char __user *buf, |
440 | int in_len, int out_len) | |
441 | { | |
442 | struct ib_uverbs_query_device cmd; | |
443 | struct ib_uverbs_query_device_resp resp; | |
bc38a6ab RD |
444 | |
445 | if (out_len < sizeof resp) | |
446 | return -ENOSPC; | |
447 | ||
448 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
449 | return -EFAULT; | |
450 | ||
bc38a6ab | 451 | memset(&resp, 0, sizeof resp); |
86bee4c9 | 452 | copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs); |
bc38a6ab RD |
453 | |
454 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
455 | &resp, sizeof resp)) | |
456 | return -EFAULT; | |
457 | ||
458 | return in_len; | |
459 | } | |
460 | ||
461 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
057aec0d | 462 | struct ib_device *ib_dev, |
bc38a6ab RD |
463 | const char __user *buf, |
464 | int in_len, int out_len) | |
465 | { | |
466 | struct ib_uverbs_query_port cmd; | |
467 | struct ib_uverbs_query_port_resp resp; | |
468 | struct ib_port_attr attr; | |
469 | int ret; | |
470 | ||
471 | if (out_len < sizeof resp) | |
472 | return -ENOSPC; | |
473 | ||
474 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
475 | return -EFAULT; | |
476 | ||
057aec0d | 477 | ret = ib_query_port(ib_dev, cmd.port_num, &attr); |
bc38a6ab RD |
478 | if (ret) |
479 | return ret; | |
480 | ||
481 | memset(&resp, 0, sizeof resp); | |
482 | ||
483 | resp.state = attr.state; | |
484 | resp.max_mtu = attr.max_mtu; | |
485 | resp.active_mtu = attr.active_mtu; | |
486 | resp.gid_tbl_len = attr.gid_tbl_len; | |
487 | resp.port_cap_flags = attr.port_cap_flags; | |
488 | resp.max_msg_sz = attr.max_msg_sz; | |
489 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
490 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
491 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
492 | resp.lid = attr.lid; | |
493 | resp.sm_lid = attr.sm_lid; | |
494 | resp.lmc = attr.lmc; | |
495 | resp.max_vl_num = attr.max_vl_num; | |
496 | resp.sm_sl = attr.sm_sl; | |
497 | resp.subnet_timeout = attr.subnet_timeout; | |
498 | resp.init_type_reply = attr.init_type_reply; | |
499 | resp.active_width = attr.active_width; | |
500 | resp.active_speed = attr.active_speed; | |
501 | resp.phys_state = attr.phys_state; | |
057aec0d | 502 | resp.link_layer = rdma_port_get_link_layer(ib_dev, |
2420b60b | 503 | cmd.port_num); |
bc38a6ab RD |
504 | |
505 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
506 | &resp, sizeof resp)) | |
507 | return -EFAULT; | |
508 | ||
509 | return in_len; | |
510 | } | |
511 | ||
bc38a6ab | 512 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
057aec0d | 513 | struct ib_device *ib_dev, |
bc38a6ab RD |
514 | const char __user *buf, |
515 | int in_len, int out_len) | |
516 | { | |
517 | struct ib_uverbs_alloc_pd cmd; | |
518 | struct ib_uverbs_alloc_pd_resp resp; | |
519 | struct ib_udata udata; | |
520 | struct ib_uobject *uobj; | |
521 | struct ib_pd *pd; | |
522 | int ret; | |
523 | ||
524 | if (out_len < sizeof resp) | |
525 | return -ENOSPC; | |
526 | ||
527 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
528 | return -EFAULT; | |
529 | ||
530 | INIT_UDATA(&udata, buf + sizeof cmd, | |
531 | (unsigned long) cmd.response + sizeof resp, | |
532 | in_len - sizeof cmd, out_len - sizeof resp); | |
533 | ||
534 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
535 | if (!uobj) | |
536 | return -ENOMEM; | |
537 | ||
3bea57a5 | 538 | init_uobj(uobj, 0, file->ucontext, &pd_lock_class); |
9ead190b | 539 | down_write(&uobj->mutex); |
bc38a6ab | 540 | |
057aec0d | 541 | pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata); |
bc38a6ab RD |
542 | if (IS_ERR(pd)) { |
543 | ret = PTR_ERR(pd); | |
544 | goto err; | |
545 | } | |
546 | ||
057aec0d | 547 | pd->device = ib_dev; |
bc38a6ab | 548 | pd->uobject = uobj; |
96249d70 | 549 | pd->local_mr = NULL; |
bc38a6ab RD |
550 | atomic_set(&pd->usecnt, 0); |
551 | ||
9ead190b RD |
552 | uobj->object = pd; |
553 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 554 | if (ret) |
9ead190b | 555 | goto err_idr; |
bc38a6ab RD |
556 | |
557 | memset(&resp, 0, sizeof resp); | |
558 | resp.pd_handle = uobj->id; | |
559 | ||
560 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
561 | &resp, sizeof resp)) { | |
562 | ret = -EFAULT; | |
9ead190b | 563 | goto err_copy; |
bc38a6ab RD |
564 | } |
565 | ||
95ed644f | 566 | mutex_lock(&file->mutex); |
eb9d3cd5 | 567 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 568 | mutex_unlock(&file->mutex); |
bc38a6ab | 569 | |
9ead190b RD |
570 | uobj->live = 1; |
571 | ||
572 | up_write(&uobj->mutex); | |
bc38a6ab | 573 | |
eb9d3cd5 RD |
574 | return in_len; |
575 | ||
9ead190b RD |
576 | err_copy: |
577 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 578 | |
9ead190b | 579 | err_idr: |
bc38a6ab RD |
580 | ib_dealloc_pd(pd); |
581 | ||
582 | err: | |
9ead190b | 583 | put_uobj_write(uobj); |
bc38a6ab RD |
584 | return ret; |
585 | } | |
586 | ||
587 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
057aec0d | 588 | struct ib_device *ib_dev, |
bc38a6ab RD |
589 | const char __user *buf, |
590 | int in_len, int out_len) | |
591 | { | |
592 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 593 | struct ib_uobject *uobj; |
7dd78647 | 594 | struct ib_pd *pd; |
9ead190b | 595 | int ret; |
bc38a6ab RD |
596 | |
597 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
598 | return -EFAULT; | |
599 | ||
9ead190b RD |
600 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
601 | if (!uobj) | |
602 | return -EINVAL; | |
7dd78647 | 603 | pd = uobj->object; |
bc38a6ab | 604 | |
7dd78647 JG |
605 | if (atomic_read(&pd->usecnt)) { |
606 | ret = -EBUSY; | |
607 | goto err_put; | |
608 | } | |
bc38a6ab | 609 | |
7dd78647 JG |
610 | ret = pd->device->dealloc_pd(uobj->object); |
611 | WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd"); | |
bc38a6ab | 612 | if (ret) |
7dd78647 JG |
613 | goto err_put; |
614 | ||
615 | uobj->live = 0; | |
616 | put_uobj_write(uobj); | |
bc38a6ab | 617 | |
9ead190b | 618 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 619 | |
95ed644f | 620 | mutex_lock(&file->mutex); |
bc38a6ab | 621 | list_del(&uobj->list); |
95ed644f | 622 | mutex_unlock(&file->mutex); |
bc38a6ab | 623 | |
9ead190b | 624 | put_uobj(uobj); |
bc38a6ab | 625 | |
9ead190b | 626 | return in_len; |
7dd78647 JG |
627 | |
628 | err_put: | |
629 | put_uobj_write(uobj); | |
630 | return ret; | |
bc38a6ab RD |
631 | } |
632 | ||
53d0bd1e SH |
633 | struct xrcd_table_entry { |
634 | struct rb_node node; | |
635 | struct ib_xrcd *xrcd; | |
636 | struct inode *inode; | |
637 | }; | |
638 | ||
639 | static int xrcd_table_insert(struct ib_uverbs_device *dev, | |
640 | struct inode *inode, | |
641 | struct ib_xrcd *xrcd) | |
642 | { | |
643 | struct xrcd_table_entry *entry, *scan; | |
644 | struct rb_node **p = &dev->xrcd_tree.rb_node; | |
645 | struct rb_node *parent = NULL; | |
646 | ||
647 | entry = kmalloc(sizeof *entry, GFP_KERNEL); | |
648 | if (!entry) | |
649 | return -ENOMEM; | |
650 | ||
651 | entry->xrcd = xrcd; | |
652 | entry->inode = inode; | |
653 | ||
654 | while (*p) { | |
655 | parent = *p; | |
656 | scan = rb_entry(parent, struct xrcd_table_entry, node); | |
657 | ||
658 | if (inode < scan->inode) { | |
659 | p = &(*p)->rb_left; | |
660 | } else if (inode > scan->inode) { | |
661 | p = &(*p)->rb_right; | |
662 | } else { | |
663 | kfree(entry); | |
664 | return -EEXIST; | |
665 | } | |
666 | } | |
667 | ||
668 | rb_link_node(&entry->node, parent, p); | |
669 | rb_insert_color(&entry->node, &dev->xrcd_tree); | |
670 | igrab(inode); | |
671 | return 0; | |
672 | } | |
673 | ||
674 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, | |
675 | struct inode *inode) | |
676 | { | |
677 | struct xrcd_table_entry *entry; | |
678 | struct rb_node *p = dev->xrcd_tree.rb_node; | |
679 | ||
680 | while (p) { | |
681 | entry = rb_entry(p, struct xrcd_table_entry, node); | |
682 | ||
683 | if (inode < entry->inode) | |
684 | p = p->rb_left; | |
685 | else if (inode > entry->inode) | |
686 | p = p->rb_right; | |
687 | else | |
688 | return entry; | |
689 | } | |
690 | ||
691 | return NULL; | |
692 | } | |
693 | ||
694 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) | |
695 | { | |
696 | struct xrcd_table_entry *entry; | |
697 | ||
698 | entry = xrcd_table_search(dev, inode); | |
699 | if (!entry) | |
700 | return NULL; | |
701 | ||
702 | return entry->xrcd; | |
703 | } | |
704 | ||
705 | static void xrcd_table_delete(struct ib_uverbs_device *dev, | |
706 | struct inode *inode) | |
707 | { | |
708 | struct xrcd_table_entry *entry; | |
709 | ||
710 | entry = xrcd_table_search(dev, inode); | |
711 | if (entry) { | |
712 | iput(inode); | |
713 | rb_erase(&entry->node, &dev->xrcd_tree); | |
714 | kfree(entry); | |
715 | } | |
716 | } | |
717 | ||
718 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, | |
057aec0d | 719 | struct ib_device *ib_dev, |
53d0bd1e SH |
720 | const char __user *buf, int in_len, |
721 | int out_len) | |
722 | { | |
723 | struct ib_uverbs_open_xrcd cmd; | |
724 | struct ib_uverbs_open_xrcd_resp resp; | |
725 | struct ib_udata udata; | |
726 | struct ib_uxrcd_object *obj; | |
727 | struct ib_xrcd *xrcd = NULL; | |
2903ff01 | 728 | struct fd f = {NULL, 0}; |
53d0bd1e | 729 | struct inode *inode = NULL; |
2903ff01 | 730 | int ret = 0; |
53d0bd1e SH |
731 | int new_xrcd = 0; |
732 | ||
733 | if (out_len < sizeof resp) | |
734 | return -ENOSPC; | |
735 | ||
736 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
737 | return -EFAULT; | |
738 | ||
739 | INIT_UDATA(&udata, buf + sizeof cmd, | |
740 | (unsigned long) cmd.response + sizeof resp, | |
741 | in_len - sizeof cmd, out_len - sizeof resp); | |
742 | ||
743 | mutex_lock(&file->device->xrcd_tree_mutex); | |
744 | ||
745 | if (cmd.fd != -1) { | |
746 | /* search for file descriptor */ | |
2903ff01 AV |
747 | f = fdget(cmd.fd); |
748 | if (!f.file) { | |
53d0bd1e SH |
749 | ret = -EBADF; |
750 | goto err_tree_mutex_unlock; | |
751 | } | |
752 | ||
496ad9aa | 753 | inode = file_inode(f.file); |
53d0bd1e SH |
754 | xrcd = find_xrcd(file->device, inode); |
755 | if (!xrcd && !(cmd.oflags & O_CREAT)) { | |
756 | /* no file descriptor. Need CREATE flag */ | |
757 | ret = -EAGAIN; | |
758 | goto err_tree_mutex_unlock; | |
759 | } | |
760 | ||
761 | if (xrcd && cmd.oflags & O_EXCL) { | |
762 | ret = -EINVAL; | |
763 | goto err_tree_mutex_unlock; | |
764 | } | |
765 | } | |
766 | ||
767 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
768 | if (!obj) { | |
769 | ret = -ENOMEM; | |
770 | goto err_tree_mutex_unlock; | |
771 | } | |
772 | ||
3bea57a5 | 773 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class); |
53d0bd1e SH |
774 | |
775 | down_write(&obj->uobject.mutex); | |
776 | ||
777 | if (!xrcd) { | |
057aec0d | 778 | xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata); |
53d0bd1e SH |
779 | if (IS_ERR(xrcd)) { |
780 | ret = PTR_ERR(xrcd); | |
781 | goto err; | |
782 | } | |
783 | ||
784 | xrcd->inode = inode; | |
057aec0d | 785 | xrcd->device = ib_dev; |
53d0bd1e SH |
786 | atomic_set(&xrcd->usecnt, 0); |
787 | mutex_init(&xrcd->tgt_qp_mutex); | |
788 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
789 | new_xrcd = 1; | |
790 | } | |
791 | ||
792 | atomic_set(&obj->refcnt, 0); | |
793 | obj->uobject.object = xrcd; | |
794 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
795 | if (ret) | |
796 | goto err_idr; | |
797 | ||
798 | memset(&resp, 0, sizeof resp); | |
799 | resp.xrcd_handle = obj->uobject.id; | |
800 | ||
801 | if (inode) { | |
802 | if (new_xrcd) { | |
803 | /* create new inode/xrcd table entry */ | |
804 | ret = xrcd_table_insert(file->device, inode, xrcd); | |
805 | if (ret) | |
806 | goto err_insert_xrcd; | |
807 | } | |
808 | atomic_inc(&xrcd->usecnt); | |
809 | } | |
810 | ||
811 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
812 | &resp, sizeof resp)) { | |
813 | ret = -EFAULT; | |
814 | goto err_copy; | |
815 | } | |
816 | ||
2903ff01 AV |
817 | if (f.file) |
818 | fdput(f); | |
53d0bd1e SH |
819 | |
820 | mutex_lock(&file->mutex); | |
821 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); | |
822 | mutex_unlock(&file->mutex); | |
823 | ||
824 | obj->uobject.live = 1; | |
825 | up_write(&obj->uobject.mutex); | |
826 | ||
827 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
828 | return in_len; | |
829 | ||
830 | err_copy: | |
831 | if (inode) { | |
832 | if (new_xrcd) | |
833 | xrcd_table_delete(file->device, inode); | |
834 | atomic_dec(&xrcd->usecnt); | |
835 | } | |
836 | ||
837 | err_insert_xrcd: | |
838 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
839 | ||
840 | err_idr: | |
841 | ib_dealloc_xrcd(xrcd); | |
842 | ||
843 | err: | |
844 | put_uobj_write(&obj->uobject); | |
845 | ||
846 | err_tree_mutex_unlock: | |
2903ff01 AV |
847 | if (f.file) |
848 | fdput(f); | |
53d0bd1e SH |
849 | |
850 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
851 | ||
852 | return ret; | |
853 | } | |
854 | ||
855 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, | |
057aec0d | 856 | struct ib_device *ib_dev, |
53d0bd1e SH |
857 | const char __user *buf, int in_len, |
858 | int out_len) | |
859 | { | |
860 | struct ib_uverbs_close_xrcd cmd; | |
861 | struct ib_uobject *uobj; | |
862 | struct ib_xrcd *xrcd = NULL; | |
863 | struct inode *inode = NULL; | |
864 | struct ib_uxrcd_object *obj; | |
865 | int live; | |
866 | int ret = 0; | |
867 | ||
868 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
869 | return -EFAULT; | |
870 | ||
871 | mutex_lock(&file->device->xrcd_tree_mutex); | |
872 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); | |
873 | if (!uobj) { | |
874 | ret = -EINVAL; | |
875 | goto out; | |
876 | } | |
877 | ||
878 | xrcd = uobj->object; | |
879 | inode = xrcd->inode; | |
880 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); | |
881 | if (atomic_read(&obj->refcnt)) { | |
882 | put_uobj_write(uobj); | |
883 | ret = -EBUSY; | |
884 | goto out; | |
885 | } | |
886 | ||
887 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { | |
888 | ret = ib_dealloc_xrcd(uobj->object); | |
889 | if (!ret) | |
890 | uobj->live = 0; | |
891 | } | |
892 | ||
893 | live = uobj->live; | |
894 | if (inode && ret) | |
895 | atomic_inc(&xrcd->usecnt); | |
896 | ||
897 | put_uobj_write(uobj); | |
898 | ||
899 | if (ret) | |
900 | goto out; | |
901 | ||
902 | if (inode && !live) | |
903 | xrcd_table_delete(file->device, inode); | |
904 | ||
905 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
906 | mutex_lock(&file->mutex); | |
907 | list_del(&uobj->list); | |
908 | mutex_unlock(&file->mutex); | |
909 | ||
910 | put_uobj(uobj); | |
911 | ret = in_len; | |
912 | ||
913 | out: | |
914 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
915 | return ret; | |
916 | } | |
917 | ||
918 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, | |
919 | struct ib_xrcd *xrcd) | |
920 | { | |
921 | struct inode *inode; | |
922 | ||
923 | inode = xrcd->inode; | |
924 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) | |
925 | return; | |
926 | ||
927 | ib_dealloc_xrcd(xrcd); | |
928 | ||
929 | if (inode) | |
930 | xrcd_table_delete(dev, inode); | |
931 | } | |
932 | ||
bc38a6ab | 933 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
057aec0d | 934 | struct ib_device *ib_dev, |
bc38a6ab RD |
935 | const char __user *buf, int in_len, |
936 | int out_len) | |
937 | { | |
938 | struct ib_uverbs_reg_mr cmd; | |
939 | struct ib_uverbs_reg_mr_resp resp; | |
940 | struct ib_udata udata; | |
f7c6a7b5 | 941 | struct ib_uobject *uobj; |
bc38a6ab RD |
942 | struct ib_pd *pd; |
943 | struct ib_mr *mr; | |
944 | int ret; | |
945 | ||
946 | if (out_len < sizeof resp) | |
947 | return -ENOSPC; | |
948 | ||
949 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
950 | return -EFAULT; | |
951 | ||
952 | INIT_UDATA(&udata, buf + sizeof cmd, | |
953 | (unsigned long) cmd.response + sizeof resp, | |
954 | in_len - sizeof cmd, out_len - sizeof resp); | |
955 | ||
956 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
957 | return -EINVAL; | |
958 | ||
1c636f80 EC |
959 | ret = ib_check_mr_access(cmd.access_flags); |
960 | if (ret) | |
961 | return ret; | |
f575394f | 962 | |
f7c6a7b5 RD |
963 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
964 | if (!uobj) | |
bc38a6ab RD |
965 | return -ENOMEM; |
966 | ||
3bea57a5 | 967 | init_uobj(uobj, 0, file->ucontext, &mr_lock_class); |
f7c6a7b5 | 968 | down_write(&uobj->mutex); |
bc38a6ab | 969 | |
9ead190b | 970 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
971 | if (!pd) { |
972 | ret = -EINVAL; | |
f7c6a7b5 | 973 | goto err_free; |
aaf1aef5 | 974 | } |
bc38a6ab | 975 | |
860f10a7 | 976 | if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { |
86bee4c9 OG |
977 | if (!(pd->device->attrs.device_cap_flags & |
978 | IB_DEVICE_ON_DEMAND_PAGING)) { | |
860f10a7 SG |
979 | pr_debug("ODP support not available\n"); |
980 | ret = -EINVAL; | |
981 | goto err_put; | |
982 | } | |
983 | } | |
984 | ||
f7c6a7b5 RD |
985 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
986 | cmd.access_flags, &udata); | |
bc38a6ab RD |
987 | if (IS_ERR(mr)) { |
988 | ret = PTR_ERR(mr); | |
9ead190b | 989 | goto err_put; |
bc38a6ab RD |
990 | } |
991 | ||
992 | mr->device = pd->device; | |
993 | mr->pd = pd; | |
f7c6a7b5 | 994 | mr->uobject = uobj; |
bc38a6ab | 995 | atomic_inc(&pd->usecnt); |
bc38a6ab | 996 | |
f7c6a7b5 RD |
997 | uobj->object = mr; |
998 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
999 | if (ret) |
1000 | goto err_unreg; | |
1001 | ||
9ead190b RD |
1002 | memset(&resp, 0, sizeof resp); |
1003 | resp.lkey = mr->lkey; | |
1004 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 1005 | resp.mr_handle = uobj->id; |
bc38a6ab | 1006 | |
bc38a6ab RD |
1007 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1008 | &resp, sizeof resp)) { | |
1009 | ret = -EFAULT; | |
9ead190b | 1010 | goto err_copy; |
bc38a6ab RD |
1011 | } |
1012 | ||
9ead190b RD |
1013 | put_pd_read(pd); |
1014 | ||
95ed644f | 1015 | mutex_lock(&file->mutex); |
f7c6a7b5 | 1016 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 1017 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1018 | |
f7c6a7b5 | 1019 | uobj->live = 1; |
9ead190b | 1020 | |
f7c6a7b5 | 1021 | up_write(&uobj->mutex); |
bc38a6ab RD |
1022 | |
1023 | return in_len; | |
1024 | ||
9ead190b | 1025 | err_copy: |
f7c6a7b5 | 1026 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
1027 | |
1028 | err_unreg: | |
1029 | ib_dereg_mr(mr); | |
1030 | ||
9ead190b RD |
1031 | err_put: |
1032 | put_pd_read(pd); | |
bc38a6ab | 1033 | |
bc38a6ab | 1034 | err_free: |
f7c6a7b5 | 1035 | put_uobj_write(uobj); |
bc38a6ab RD |
1036 | return ret; |
1037 | } | |
1038 | ||
7e6edb9b | 1039 | ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, |
057aec0d | 1040 | struct ib_device *ib_dev, |
7e6edb9b MB |
1041 | const char __user *buf, int in_len, |
1042 | int out_len) | |
1043 | { | |
1044 | struct ib_uverbs_rereg_mr cmd; | |
1045 | struct ib_uverbs_rereg_mr_resp resp; | |
1046 | struct ib_udata udata; | |
1047 | struct ib_pd *pd = NULL; | |
1048 | struct ib_mr *mr; | |
1049 | struct ib_pd *old_pd; | |
1050 | int ret; | |
1051 | struct ib_uobject *uobj; | |
1052 | ||
1053 | if (out_len < sizeof(resp)) | |
1054 | return -ENOSPC; | |
1055 | ||
1056 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1057 | return -EFAULT; | |
1058 | ||
1059 | INIT_UDATA(&udata, buf + sizeof(cmd), | |
1060 | (unsigned long) cmd.response + sizeof(resp), | |
1061 | in_len - sizeof(cmd), out_len - sizeof(resp)); | |
1062 | ||
1063 | if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) | |
1064 | return -EINVAL; | |
1065 | ||
1066 | if ((cmd.flags & IB_MR_REREG_TRANS) && | |
1067 | (!cmd.start || !cmd.hca_va || 0 >= cmd.length || | |
1068 | (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) | |
1069 | return -EINVAL; | |
1070 | ||
1071 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, | |
1072 | file->ucontext); | |
1073 | ||
1074 | if (!uobj) | |
1075 | return -EINVAL; | |
1076 | ||
1077 | mr = uobj->object; | |
1078 | ||
1079 | if (cmd.flags & IB_MR_REREG_ACCESS) { | |
1080 | ret = ib_check_mr_access(cmd.access_flags); | |
1081 | if (ret) | |
1082 | goto put_uobjs; | |
1083 | } | |
1084 | ||
1085 | if (cmd.flags & IB_MR_REREG_PD) { | |
1086 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1087 | if (!pd) { | |
1088 | ret = -EINVAL; | |
1089 | goto put_uobjs; | |
1090 | } | |
1091 | } | |
1092 | ||
7e6edb9b MB |
1093 | old_pd = mr->pd; |
1094 | ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, | |
1095 | cmd.length, cmd.hca_va, | |
1096 | cmd.access_flags, pd, &udata); | |
1097 | if (!ret) { | |
1098 | if (cmd.flags & IB_MR_REREG_PD) { | |
1099 | atomic_inc(&pd->usecnt); | |
1100 | mr->pd = pd; | |
1101 | atomic_dec(&old_pd->usecnt); | |
1102 | } | |
1103 | } else { | |
1104 | goto put_uobj_pd; | |
1105 | } | |
1106 | ||
1107 | memset(&resp, 0, sizeof(resp)); | |
1108 | resp.lkey = mr->lkey; | |
1109 | resp.rkey = mr->rkey; | |
1110 | ||
1111 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1112 | &resp, sizeof(resp))) | |
1113 | ret = -EFAULT; | |
1114 | else | |
1115 | ret = in_len; | |
1116 | ||
1117 | put_uobj_pd: | |
1118 | if (cmd.flags & IB_MR_REREG_PD) | |
1119 | put_pd_read(pd); | |
1120 | ||
1121 | put_uobjs: | |
1122 | ||
1123 | put_uobj_write(mr->uobject); | |
1124 | ||
1125 | return ret; | |
1126 | } | |
1127 | ||
bc38a6ab | 1128 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, |
057aec0d | 1129 | struct ib_device *ib_dev, |
bc38a6ab RD |
1130 | const char __user *buf, int in_len, |
1131 | int out_len) | |
1132 | { | |
1133 | struct ib_uverbs_dereg_mr cmd; | |
1134 | struct ib_mr *mr; | |
9ead190b | 1135 | struct ib_uobject *uobj; |
bc38a6ab RD |
1136 | int ret = -EINVAL; |
1137 | ||
1138 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1139 | return -EFAULT; | |
1140 | ||
9ead190b RD |
1141 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
1142 | if (!uobj) | |
1143 | return -EINVAL; | |
bc38a6ab | 1144 | |
f7c6a7b5 | 1145 | mr = uobj->object; |
bc38a6ab RD |
1146 | |
1147 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
1148 | if (!ret) |
1149 | uobj->live = 0; | |
1150 | ||
1151 | put_uobj_write(uobj); | |
1152 | ||
bc38a6ab | 1153 | if (ret) |
9ead190b | 1154 | return ret; |
bc38a6ab | 1155 | |
9ead190b | 1156 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 1157 | |
95ed644f | 1158 | mutex_lock(&file->mutex); |
9ead190b | 1159 | list_del(&uobj->list); |
95ed644f | 1160 | mutex_unlock(&file->mutex); |
bc38a6ab | 1161 | |
9ead190b | 1162 | put_uobj(uobj); |
bc38a6ab | 1163 | |
9ead190b | 1164 | return in_len; |
bc38a6ab RD |
1165 | } |
1166 | ||
6b52a12b | 1167 | ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, |
057aec0d YH |
1168 | struct ib_device *ib_dev, |
1169 | const char __user *buf, int in_len, | |
1170 | int out_len) | |
6b52a12b SM |
1171 | { |
1172 | struct ib_uverbs_alloc_mw cmd; | |
1173 | struct ib_uverbs_alloc_mw_resp resp; | |
1174 | struct ib_uobject *uobj; | |
1175 | struct ib_pd *pd; | |
1176 | struct ib_mw *mw; | |
b2a239df | 1177 | struct ib_udata udata; |
6b52a12b SM |
1178 | int ret; |
1179 | ||
1180 | if (out_len < sizeof(resp)) | |
1181 | return -ENOSPC; | |
1182 | ||
1183 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1184 | return -EFAULT; | |
1185 | ||
1186 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
1187 | if (!uobj) | |
1188 | return -ENOMEM; | |
1189 | ||
1190 | init_uobj(uobj, 0, file->ucontext, &mw_lock_class); | |
1191 | down_write(&uobj->mutex); | |
1192 | ||
1193 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1194 | if (!pd) { | |
1195 | ret = -EINVAL; | |
1196 | goto err_free; | |
1197 | } | |
1198 | ||
b2a239df MB |
1199 | INIT_UDATA(&udata, buf + sizeof(cmd), |
1200 | (unsigned long)cmd.response + sizeof(resp), | |
1201 | in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), | |
1202 | out_len - sizeof(resp)); | |
1203 | ||
1204 | mw = pd->device->alloc_mw(pd, cmd.mw_type, &udata); | |
6b52a12b SM |
1205 | if (IS_ERR(mw)) { |
1206 | ret = PTR_ERR(mw); | |
1207 | goto err_put; | |
1208 | } | |
1209 | ||
1210 | mw->device = pd->device; | |
1211 | mw->pd = pd; | |
1212 | mw->uobject = uobj; | |
1213 | atomic_inc(&pd->usecnt); | |
1214 | ||
1215 | uobj->object = mw; | |
1216 | ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj); | |
1217 | if (ret) | |
1218 | goto err_unalloc; | |
1219 | ||
1220 | memset(&resp, 0, sizeof(resp)); | |
1221 | resp.rkey = mw->rkey; | |
1222 | resp.mw_handle = uobj->id; | |
1223 | ||
1224 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1225 | &resp, sizeof(resp))) { | |
1226 | ret = -EFAULT; | |
1227 | goto err_copy; | |
1228 | } | |
1229 | ||
1230 | put_pd_read(pd); | |
1231 | ||
1232 | mutex_lock(&file->mutex); | |
1233 | list_add_tail(&uobj->list, &file->ucontext->mw_list); | |
1234 | mutex_unlock(&file->mutex); | |
1235 | ||
1236 | uobj->live = 1; | |
1237 | ||
1238 | up_write(&uobj->mutex); | |
1239 | ||
1240 | return in_len; | |
1241 | ||
1242 | err_copy: | |
1243 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1244 | ||
1245 | err_unalloc: | |
feb7c1e3 | 1246 | uverbs_dealloc_mw(mw); |
6b52a12b SM |
1247 | |
1248 | err_put: | |
1249 | put_pd_read(pd); | |
1250 | ||
1251 | err_free: | |
1252 | put_uobj_write(uobj); | |
1253 | return ret; | |
1254 | } | |
1255 | ||
1256 | ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, | |
057aec0d YH |
1257 | struct ib_device *ib_dev, |
1258 | const char __user *buf, int in_len, | |
1259 | int out_len) | |
6b52a12b SM |
1260 | { |
1261 | struct ib_uverbs_dealloc_mw cmd; | |
1262 | struct ib_mw *mw; | |
1263 | struct ib_uobject *uobj; | |
1264 | int ret = -EINVAL; | |
1265 | ||
1266 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1267 | return -EFAULT; | |
1268 | ||
1269 | uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext); | |
1270 | if (!uobj) | |
1271 | return -EINVAL; | |
1272 | ||
1273 | mw = uobj->object; | |
1274 | ||
feb7c1e3 | 1275 | ret = uverbs_dealloc_mw(mw); |
6b52a12b SM |
1276 | if (!ret) |
1277 | uobj->live = 0; | |
1278 | ||
1279 | put_uobj_write(uobj); | |
1280 | ||
1281 | if (ret) | |
1282 | return ret; | |
1283 | ||
1284 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1285 | ||
1286 | mutex_lock(&file->mutex); | |
1287 | list_del(&uobj->list); | |
1288 | mutex_unlock(&file->mutex); | |
1289 | ||
1290 | put_uobj(uobj); | |
1291 | ||
1292 | return in_len; | |
1293 | } | |
1294 | ||
6b73597e | 1295 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
057aec0d | 1296 | struct ib_device *ib_dev, |
6b73597e RD |
1297 | const char __user *buf, int in_len, |
1298 | int out_len) | |
1299 | { | |
1300 | struct ib_uverbs_create_comp_channel cmd; | |
1301 | struct ib_uverbs_create_comp_channel_resp resp; | |
1302 | struct file *filp; | |
b1e4594b | 1303 | int ret; |
6b73597e RD |
1304 | |
1305 | if (out_len < sizeof resp) | |
1306 | return -ENOSPC; | |
1307 | ||
1308 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1309 | return -EFAULT; | |
1310 | ||
da183c7a | 1311 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
1312 | if (ret < 0) |
1313 | return ret; | |
1314 | resp.fd = ret; | |
1315 | ||
057aec0d | 1316 | filp = ib_uverbs_alloc_event_file(file, ib_dev, 0); |
b1e4594b AV |
1317 | if (IS_ERR(filp)) { |
1318 | put_unused_fd(resp.fd); | |
6b73597e | 1319 | return PTR_ERR(filp); |
b1e4594b | 1320 | } |
6b73597e RD |
1321 | |
1322 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1323 | &resp, sizeof resp)) { | |
1324 | put_unused_fd(resp.fd); | |
1325 | fput(filp); | |
1326 | return -EFAULT; | |
1327 | } | |
1328 | ||
1329 | fd_install(resp.fd, filp); | |
1330 | return in_len; | |
1331 | } | |
1332 | ||
565197dd | 1333 | static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, |
057aec0d | 1334 | struct ib_device *ib_dev, |
565197dd MB |
1335 | struct ib_udata *ucore, |
1336 | struct ib_udata *uhw, | |
1337 | struct ib_uverbs_ex_create_cq *cmd, | |
1338 | size_t cmd_sz, | |
1339 | int (*cb)(struct ib_uverbs_file *file, | |
1340 | struct ib_ucq_object *obj, | |
1341 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1342 | struct ib_udata *udata, | |
1343 | void *context), | |
1344 | void *context) | |
bc38a6ab | 1345 | { |
9ead190b | 1346 | struct ib_ucq_object *obj; |
6b73597e | 1347 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
1348 | struct ib_cq *cq; |
1349 | int ret; | |
565197dd | 1350 | struct ib_uverbs_ex_create_cq_resp resp; |
bcf4c1ea | 1351 | struct ib_cq_init_attr attr = {}; |
bc38a6ab | 1352 | |
565197dd MB |
1353 | if (cmd->comp_vector >= file->device->num_comp_vectors) |
1354 | return ERR_PTR(-EINVAL); | |
bc38a6ab | 1355 | |
9ead190b RD |
1356 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1357 | if (!obj) | |
565197dd | 1358 | return ERR_PTR(-ENOMEM); |
bc38a6ab | 1359 | |
565197dd | 1360 | init_uobj(&obj->uobject, cmd->user_handle, file->ucontext, &cq_lock_class); |
9ead190b RD |
1361 | down_write(&obj->uobject.mutex); |
1362 | ||
565197dd MB |
1363 | if (cmd->comp_channel >= 0) { |
1364 | ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel); | |
ac4e7b35 JM |
1365 | if (!ev_file) { |
1366 | ret = -EINVAL; | |
1367 | goto err; | |
1368 | } | |
1369 | } | |
1370 | ||
9ead190b RD |
1371 | obj->uverbs_file = file; |
1372 | obj->comp_events_reported = 0; | |
1373 | obj->async_events_reported = 0; | |
1374 | INIT_LIST_HEAD(&obj->comp_list); | |
1375 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab | 1376 | |
565197dd MB |
1377 | attr.cqe = cmd->cqe; |
1378 | attr.comp_vector = cmd->comp_vector; | |
1379 | ||
1380 | if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) | |
1381 | attr.flags = cmd->flags; | |
1382 | ||
057aec0d | 1383 | cq = ib_dev->create_cq(ib_dev, &attr, |
565197dd | 1384 | file->ucontext, uhw); |
bc38a6ab RD |
1385 | if (IS_ERR(cq)) { |
1386 | ret = PTR_ERR(cq); | |
9ead190b | 1387 | goto err_file; |
bc38a6ab RD |
1388 | } |
1389 | ||
057aec0d | 1390 | cq->device = ib_dev; |
9ead190b | 1391 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
1392 | cq->comp_handler = ib_uverbs_comp_handler; |
1393 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 1394 | cq->cq_context = ev_file; |
bc38a6ab RD |
1395 | atomic_set(&cq->usecnt, 0); |
1396 | ||
9ead190b RD |
1397 | obj->uobject.object = cq; |
1398 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 1399 | if (ret) |
9ead190b | 1400 | goto err_free; |
bc38a6ab RD |
1401 | |
1402 | memset(&resp, 0, sizeof resp); | |
565197dd MB |
1403 | resp.base.cq_handle = obj->uobject.id; |
1404 | resp.base.cqe = cq->cqe; | |
bc38a6ab | 1405 | |
565197dd MB |
1406 | resp.response_length = offsetof(typeof(resp), response_length) + |
1407 | sizeof(resp.response_length); | |
1408 | ||
1409 | ret = cb(file, obj, &resp, ucore, context); | |
1410 | if (ret) | |
1411 | goto err_cb; | |
bc38a6ab | 1412 | |
95ed644f | 1413 | mutex_lock(&file->mutex); |
9ead190b | 1414 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 1415 | mutex_unlock(&file->mutex); |
bc38a6ab | 1416 | |
9ead190b RD |
1417 | obj->uobject.live = 1; |
1418 | ||
1419 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 1420 | |
565197dd | 1421 | return obj; |
eb9d3cd5 | 1422 | |
565197dd | 1423 | err_cb: |
9ead190b | 1424 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); |
eb9d3cd5 | 1425 | |
9ead190b | 1426 | err_free: |
bc38a6ab RD |
1427 | ib_destroy_cq(cq); |
1428 | ||
9ead190b | 1429 | err_file: |
ac4e7b35 | 1430 | if (ev_file) |
9ead190b RD |
1431 | ib_uverbs_release_ucq(file, ev_file, obj); |
1432 | ||
1433 | err: | |
1434 | put_uobj_write(&obj->uobject); | |
565197dd MB |
1435 | |
1436 | return ERR_PTR(ret); | |
1437 | } | |
1438 | ||
1439 | static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, | |
1440 | struct ib_ucq_object *obj, | |
1441 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1442 | struct ib_udata *ucore, void *context) | |
1443 | { | |
1444 | if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) | |
1445 | return -EFAULT; | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, | |
057aec0d | 1451 | struct ib_device *ib_dev, |
565197dd MB |
1452 | const char __user *buf, int in_len, |
1453 | int out_len) | |
1454 | { | |
1455 | struct ib_uverbs_create_cq cmd; | |
1456 | struct ib_uverbs_ex_create_cq cmd_ex; | |
1457 | struct ib_uverbs_create_cq_resp resp; | |
1458 | struct ib_udata ucore; | |
1459 | struct ib_udata uhw; | |
1460 | struct ib_ucq_object *obj; | |
1461 | ||
1462 | if (out_len < sizeof(resp)) | |
1463 | return -ENOSPC; | |
1464 | ||
1465 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1466 | return -EFAULT; | |
1467 | ||
5d1e6235 | 1468 | INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), sizeof(resp)); |
565197dd MB |
1469 | |
1470 | INIT_UDATA(&uhw, buf + sizeof(cmd), | |
1471 | (unsigned long)cmd.response + sizeof(resp), | |
1472 | in_len - sizeof(cmd), out_len - sizeof(resp)); | |
1473 | ||
1474 | memset(&cmd_ex, 0, sizeof(cmd_ex)); | |
1475 | cmd_ex.user_handle = cmd.user_handle; | |
1476 | cmd_ex.cqe = cmd.cqe; | |
1477 | cmd_ex.comp_vector = cmd.comp_vector; | |
1478 | cmd_ex.comp_channel = cmd.comp_channel; | |
1479 | ||
057aec0d | 1480 | obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex, |
565197dd MB |
1481 | offsetof(typeof(cmd_ex), comp_channel) + |
1482 | sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, | |
1483 | NULL); | |
1484 | ||
1485 | if (IS_ERR(obj)) | |
1486 | return PTR_ERR(obj); | |
1487 | ||
1488 | return in_len; | |
1489 | } | |
1490 | ||
1491 | static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, | |
1492 | struct ib_ucq_object *obj, | |
1493 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1494 | struct ib_udata *ucore, void *context) | |
1495 | { | |
1496 | if (ib_copy_to_udata(ucore, resp, resp->response_length)) | |
1497 | return -EFAULT; | |
1498 | ||
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, | |
057aec0d | 1503 | struct ib_device *ib_dev, |
565197dd MB |
1504 | struct ib_udata *ucore, |
1505 | struct ib_udata *uhw) | |
1506 | { | |
1507 | struct ib_uverbs_ex_create_cq_resp resp; | |
1508 | struct ib_uverbs_ex_create_cq cmd; | |
1509 | struct ib_ucq_object *obj; | |
1510 | int err; | |
1511 | ||
1512 | if (ucore->inlen < sizeof(cmd)) | |
1513 | return -EINVAL; | |
1514 | ||
1515 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); | |
1516 | if (err) | |
1517 | return err; | |
1518 | ||
1519 | if (cmd.comp_mask) | |
1520 | return -EINVAL; | |
1521 | ||
1522 | if (cmd.reserved) | |
1523 | return -EINVAL; | |
1524 | ||
1525 | if (ucore->outlen < (offsetof(typeof(resp), response_length) + | |
1526 | sizeof(resp.response_length))) | |
1527 | return -ENOSPC; | |
1528 | ||
057aec0d | 1529 | obj = create_cq(file, ib_dev, ucore, uhw, &cmd, |
565197dd MB |
1530 | min(ucore->inlen, sizeof(cmd)), |
1531 | ib_uverbs_ex_create_cq_cb, NULL); | |
1532 | ||
1533 | if (IS_ERR(obj)) | |
1534 | return PTR_ERR(obj); | |
1535 | ||
1536 | return 0; | |
bc38a6ab RD |
1537 | } |
1538 | ||
33b9b3ee | 1539 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
057aec0d | 1540 | struct ib_device *ib_dev, |
33b9b3ee RD |
1541 | const char __user *buf, int in_len, |
1542 | int out_len) | |
1543 | { | |
1544 | struct ib_uverbs_resize_cq cmd; | |
1545 | struct ib_uverbs_resize_cq_resp resp; | |
1546 | struct ib_udata udata; | |
1547 | struct ib_cq *cq; | |
1548 | int ret = -EINVAL; | |
1549 | ||
1550 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1551 | return -EFAULT; | |
1552 | ||
1553 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1554 | (unsigned long) cmd.response + sizeof resp, | |
1555 | in_len - sizeof cmd, out_len - sizeof resp); | |
1556 | ||
1ccf6aa1 | 1557 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
1558 | if (!cq) |
1559 | return -EINVAL; | |
33b9b3ee RD |
1560 | |
1561 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
1562 | if (ret) | |
1563 | goto out; | |
1564 | ||
33b9b3ee RD |
1565 | resp.cqe = cq->cqe; |
1566 | ||
1567 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 1568 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
1569 | ret = -EFAULT; |
1570 | ||
1571 | out: | |
9ead190b | 1572 | put_cq_read(cq); |
33b9b3ee RD |
1573 | |
1574 | return ret ? ret : in_len; | |
1575 | } | |
1576 | ||
7182afea DC |
1577 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
1578 | { | |
1579 | struct ib_uverbs_wc tmp; | |
1580 | ||
1581 | tmp.wr_id = wc->wr_id; | |
1582 | tmp.status = wc->status; | |
1583 | tmp.opcode = wc->opcode; | |
1584 | tmp.vendor_err = wc->vendor_err; | |
1585 | tmp.byte_len = wc->byte_len; | |
1586 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
1587 | tmp.qp_num = wc->qp->qp_num; | |
1588 | tmp.src_qp = wc->src_qp; | |
1589 | tmp.wc_flags = wc->wc_flags; | |
1590 | tmp.pkey_index = wc->pkey_index; | |
1591 | tmp.slid = wc->slid; | |
1592 | tmp.sl = wc->sl; | |
1593 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
1594 | tmp.port_num = wc->port_num; | |
1595 | tmp.reserved = 0; | |
1596 | ||
1597 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
1598 | return -EFAULT; | |
1599 | ||
1600 | return 0; | |
1601 | } | |
1602 | ||
67cdb40c | 1603 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
057aec0d | 1604 | struct ib_device *ib_dev, |
67cdb40c RD |
1605 | const char __user *buf, int in_len, |
1606 | int out_len) | |
1607 | { | |
1608 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
1609 | struct ib_uverbs_poll_cq_resp resp; |
1610 | u8 __user *header_ptr; | |
1611 | u8 __user *data_ptr; | |
67cdb40c | 1612 | struct ib_cq *cq; |
7182afea DC |
1613 | struct ib_wc wc; |
1614 | int ret; | |
67cdb40c RD |
1615 | |
1616 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1617 | return -EFAULT; | |
1618 | ||
1ccf6aa1 | 1619 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
1620 | if (!cq) |
1621 | return -EINVAL; | |
67cdb40c | 1622 | |
7182afea DC |
1623 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
1624 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
1625 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 1626 | |
7182afea DC |
1627 | memset(&resp, 0, sizeof resp); |
1628 | while (resp.count < cmd.ne) { | |
1629 | ret = ib_poll_cq(cq, 1, &wc); | |
1630 | if (ret < 0) | |
1631 | goto out_put; | |
1632 | if (!ret) | |
1633 | break; | |
1634 | ||
1635 | ret = copy_wc_to_user(data_ptr, &wc); | |
1636 | if (ret) | |
1637 | goto out_put; | |
1638 | ||
1639 | data_ptr += sizeof(struct ib_uverbs_wc); | |
1640 | ++resp.count; | |
67cdb40c RD |
1641 | } |
1642 | ||
7182afea | 1643 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 1644 | ret = -EFAULT; |
7182afea DC |
1645 | goto out_put; |
1646 | } | |
67cdb40c | 1647 | |
7182afea | 1648 | ret = in_len; |
67cdb40c | 1649 | |
7182afea DC |
1650 | out_put: |
1651 | put_cq_read(cq); | |
1652 | return ret; | |
67cdb40c RD |
1653 | } |
1654 | ||
1655 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
057aec0d | 1656 | struct ib_device *ib_dev, |
67cdb40c RD |
1657 | const char __user *buf, int in_len, |
1658 | int out_len) | |
1659 | { | |
1660 | struct ib_uverbs_req_notify_cq cmd; | |
1661 | struct ib_cq *cq; | |
67cdb40c RD |
1662 | |
1663 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1664 | return -EFAULT; | |
1665 | ||
1ccf6aa1 | 1666 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 1667 | if (!cq) |
9ead190b | 1668 | return -EINVAL; |
67cdb40c | 1669 | |
9ead190b RD |
1670 | ib_req_notify_cq(cq, cmd.solicited_only ? |
1671 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
1672 | ||
ab108676 | 1673 | put_cq_read(cq); |
9ead190b RD |
1674 | |
1675 | return in_len; | |
67cdb40c RD |
1676 | } |
1677 | ||
bc38a6ab | 1678 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
057aec0d | 1679 | struct ib_device *ib_dev, |
bc38a6ab RD |
1680 | const char __user *buf, int in_len, |
1681 | int out_len) | |
1682 | { | |
63aaf647 RD |
1683 | struct ib_uverbs_destroy_cq cmd; |
1684 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1685 | struct ib_uobject *uobj; |
63aaf647 | 1686 | struct ib_cq *cq; |
9ead190b | 1687 | struct ib_ucq_object *obj; |
6b73597e | 1688 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1689 | int ret = -EINVAL; |
bc38a6ab RD |
1690 | |
1691 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1692 | return -EFAULT; | |
1693 | ||
9ead190b RD |
1694 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1695 | if (!uobj) | |
1696 | return -EINVAL; | |
1697 | cq = uobj->object; | |
1698 | ev_file = cq->cq_context; | |
1699 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1700 | |
9ead190b RD |
1701 | ret = ib_destroy_cq(cq); |
1702 | if (!ret) | |
1703 | uobj->live = 0; | |
bc38a6ab | 1704 | |
9ead190b | 1705 | put_uobj_write(uobj); |
bc38a6ab | 1706 | |
bc38a6ab | 1707 | if (ret) |
9ead190b | 1708 | return ret; |
bc38a6ab | 1709 | |
9ead190b | 1710 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1711 | |
95ed644f | 1712 | mutex_lock(&file->mutex); |
9ead190b | 1713 | list_del(&uobj->list); |
95ed644f | 1714 | mutex_unlock(&file->mutex); |
bc38a6ab | 1715 | |
9ead190b | 1716 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1717 | |
9ead190b RD |
1718 | memset(&resp, 0, sizeof resp); |
1719 | resp.comp_events_reported = obj->comp_events_reported; | |
1720 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1721 | |
9ead190b | 1722 | put_uobj(uobj); |
bc38a6ab | 1723 | |
63aaf647 RD |
1724 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1725 | &resp, sizeof resp)) | |
9ead190b | 1726 | return -EFAULT; |
bc38a6ab | 1727 | |
9ead190b | 1728 | return in_len; |
bc38a6ab RD |
1729 | } |
1730 | ||
6d8a7497 EBE |
1731 | static int create_qp(struct ib_uverbs_file *file, |
1732 | struct ib_udata *ucore, | |
1733 | struct ib_udata *uhw, | |
1734 | struct ib_uverbs_ex_create_qp *cmd, | |
1735 | size_t cmd_sz, | |
1736 | int (*cb)(struct ib_uverbs_file *file, | |
1737 | struct ib_uverbs_ex_create_qp_resp *resp, | |
1738 | struct ib_udata *udata), | |
1739 | void *context) | |
bc38a6ab | 1740 | { |
6d8a7497 EBE |
1741 | struct ib_uqp_object *obj; |
1742 | struct ib_device *device; | |
1743 | struct ib_pd *pd = NULL; | |
1744 | struct ib_xrcd *xrcd = NULL; | |
1745 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1746 | struct ib_cq *scq = NULL, *rcq = NULL; | |
1747 | struct ib_srq *srq = NULL; | |
1748 | struct ib_qp *qp; | |
1749 | char *buf; | |
1750 | struct ib_qp_init_attr attr; | |
1751 | struct ib_uverbs_ex_create_qp_resp resp; | |
1752 | int ret; | |
1753 | ||
1754 | if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) | |
c938a616 OG |
1755 | return -EPERM; |
1756 | ||
846be90d | 1757 | obj = kzalloc(sizeof *obj, GFP_KERNEL); |
9ead190b | 1758 | if (!obj) |
bc38a6ab RD |
1759 | return -ENOMEM; |
1760 | ||
6d8a7497 EBE |
1761 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, |
1762 | &qp_lock_class); | |
9ead190b | 1763 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1764 | |
6d8a7497 EBE |
1765 | if (cmd->qp_type == IB_QPT_XRC_TGT) { |
1766 | xrcd = idr_read_xrcd(cmd->pd_handle, file->ucontext, | |
1767 | &xrcd_uobj); | |
b93f3c18 SH |
1768 | if (!xrcd) { |
1769 | ret = -EINVAL; | |
1770 | goto err_put; | |
1771 | } | |
1772 | device = xrcd->device; | |
9977f4f6 | 1773 | } else { |
6d8a7497 EBE |
1774 | if (cmd->qp_type == IB_QPT_XRC_INI) { |
1775 | cmd->max_recv_wr = 0; | |
1776 | cmd->max_recv_sge = 0; | |
b93f3c18 | 1777 | } else { |
6d8a7497 EBE |
1778 | if (cmd->is_srq) { |
1779 | srq = idr_read_srq(cmd->srq_handle, | |
1780 | file->ucontext); | |
b93f3c18 SH |
1781 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { |
1782 | ret = -EINVAL; | |
1783 | goto err_put; | |
1784 | } | |
1785 | } | |
5909ce54 | 1786 | |
6d8a7497 EBE |
1787 | if (cmd->recv_cq_handle != cmd->send_cq_handle) { |
1788 | rcq = idr_read_cq(cmd->recv_cq_handle, | |
1789 | file->ucontext, 0); | |
5909ce54 RD |
1790 | if (!rcq) { |
1791 | ret = -EINVAL; | |
1792 | goto err_put; | |
1793 | } | |
9977f4f6 SH |
1794 | } |
1795 | } | |
5909ce54 | 1796 | |
6d8a7497 | 1797 | scq = idr_read_cq(cmd->send_cq_handle, file->ucontext, !!rcq); |
5909ce54 | 1798 | rcq = rcq ?: scq; |
6d8a7497 | 1799 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); |
5909ce54 RD |
1800 | if (!pd || !scq) { |
1801 | ret = -EINVAL; | |
1802 | goto err_put; | |
1803 | } | |
1804 | ||
b93f3c18 | 1805 | device = pd->device; |
9977f4f6 SH |
1806 | } |
1807 | ||
bc38a6ab RD |
1808 | attr.event_handler = ib_uverbs_qp_event_handler; |
1809 | attr.qp_context = file; | |
1810 | attr.send_cq = scq; | |
1811 | attr.recv_cq = rcq; | |
f520ba5a | 1812 | attr.srq = srq; |
b93f3c18 | 1813 | attr.xrcd = xrcd; |
6d8a7497 EBE |
1814 | attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : |
1815 | IB_SIGNAL_REQ_WR; | |
1816 | attr.qp_type = cmd->qp_type; | |
b846f25a | 1817 | attr.create_flags = 0; |
bc38a6ab | 1818 | |
6d8a7497 EBE |
1819 | attr.cap.max_send_wr = cmd->max_send_wr; |
1820 | attr.cap.max_recv_wr = cmd->max_recv_wr; | |
1821 | attr.cap.max_send_sge = cmd->max_send_sge; | |
1822 | attr.cap.max_recv_sge = cmd->max_recv_sge; | |
1823 | attr.cap.max_inline_data = cmd->max_inline_data; | |
bc38a6ab | 1824 | |
9ead190b RD |
1825 | obj->uevent.events_reported = 0; |
1826 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1827 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab | 1828 | |
6d8a7497 EBE |
1829 | if (cmd_sz >= offsetof(typeof(*cmd), create_flags) + |
1830 | sizeof(cmd->create_flags)) | |
1831 | attr.create_flags = cmd->create_flags; | |
1832 | ||
8a06ce59 LR |
1833 | if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | |
1834 | IB_QP_CREATE_CROSS_CHANNEL | | |
1835 | IB_QP_CREATE_MANAGED_SEND | | |
1836 | IB_QP_CREATE_MANAGED_RECV)) { | |
6d8a7497 EBE |
1837 | ret = -EINVAL; |
1838 | goto err_put; | |
1839 | } | |
1840 | ||
1841 | buf = (void *)cmd + sizeof(*cmd); | |
1842 | if (cmd_sz > sizeof(*cmd)) | |
1843 | if (!(buf[0] == 0 && !memcmp(buf, buf + 1, | |
1844 | cmd_sz - sizeof(*cmd) - 1))) { | |
1845 | ret = -EINVAL; | |
1846 | goto err_put; | |
1847 | } | |
1848 | ||
1849 | if (cmd->qp_type == IB_QPT_XRC_TGT) | |
b93f3c18 SH |
1850 | qp = ib_create_qp(pd, &attr); |
1851 | else | |
6d8a7497 | 1852 | qp = device->create_qp(pd, &attr, uhw); |
b93f3c18 | 1853 | |
bc38a6ab RD |
1854 | if (IS_ERR(qp)) { |
1855 | ret = PTR_ERR(qp); | |
9ead190b | 1856 | goto err_put; |
bc38a6ab RD |
1857 | } |
1858 | ||
6d8a7497 | 1859 | if (cmd->qp_type != IB_QPT_XRC_TGT) { |
0e0ec7e0 | 1860 | qp->real_qp = qp; |
b93f3c18 SH |
1861 | qp->device = device; |
1862 | qp->pd = pd; | |
1863 | qp->send_cq = attr.send_cq; | |
1864 | qp->recv_cq = attr.recv_cq; | |
1865 | qp->srq = attr.srq; | |
1866 | qp->event_handler = attr.event_handler; | |
1867 | qp->qp_context = attr.qp_context; | |
1868 | qp->qp_type = attr.qp_type; | |
e47e321a | 1869 | atomic_set(&qp->usecnt, 0); |
b93f3c18 SH |
1870 | atomic_inc(&pd->usecnt); |
1871 | atomic_inc(&attr.send_cq->usecnt); | |
1872 | if (attr.recv_cq) | |
1873 | atomic_inc(&attr.recv_cq->usecnt); | |
1874 | if (attr.srq) | |
1875 | atomic_inc(&attr.srq->usecnt); | |
1876 | } | |
1877 | qp->uobject = &obj->uevent.uobject; | |
bc38a6ab | 1878 | |
9ead190b RD |
1879 | obj->uevent.uobject.object = qp; |
1880 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1881 | if (ret) |
1882 | goto err_destroy; | |
1883 | ||
9ead190b | 1884 | memset(&resp, 0, sizeof resp); |
6d8a7497 EBE |
1885 | resp.base.qpn = qp->qp_num; |
1886 | resp.base.qp_handle = obj->uevent.uobject.id; | |
1887 | resp.base.max_recv_sge = attr.cap.max_recv_sge; | |
1888 | resp.base.max_send_sge = attr.cap.max_send_sge; | |
1889 | resp.base.max_recv_wr = attr.cap.max_recv_wr; | |
1890 | resp.base.max_send_wr = attr.cap.max_send_wr; | |
1891 | resp.base.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1892 | |
6d8a7497 EBE |
1893 | resp.response_length = offsetof(typeof(resp), response_length) + |
1894 | sizeof(resp.response_length); | |
1895 | ||
1896 | ret = cb(file, &resp, ucore); | |
1897 | if (ret) | |
1898 | goto err_cb; | |
bc38a6ab | 1899 | |
846be90d YH |
1900 | if (xrcd) { |
1901 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, | |
1902 | uobject); | |
1903 | atomic_inc(&obj->uxrcd->refcnt); | |
b93f3c18 | 1904 | put_xrcd_read(xrcd_uobj); |
846be90d YH |
1905 | } |
1906 | ||
b93f3c18 SH |
1907 | if (pd) |
1908 | put_pd_read(pd); | |
1909 | if (scq) | |
1910 | put_cq_read(scq); | |
9977f4f6 | 1911 | if (rcq && rcq != scq) |
43db2bc0 | 1912 | put_cq_read(rcq); |
9ead190b RD |
1913 | if (srq) |
1914 | put_srq_read(srq); | |
1915 | ||
95ed644f | 1916 | mutex_lock(&file->mutex); |
9ead190b | 1917 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1918 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1919 | |
9ead190b RD |
1920 | obj->uevent.uobject.live = 1; |
1921 | ||
1922 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab | 1923 | |
6d8a7497 EBE |
1924 | return 0; |
1925 | err_cb: | |
9ead190b | 1926 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); |
bc38a6ab RD |
1927 | |
1928 | err_destroy: | |
1929 | ib_destroy_qp(qp); | |
1930 | ||
9ead190b | 1931 | err_put: |
b93f3c18 SH |
1932 | if (xrcd) |
1933 | put_xrcd_read(xrcd_uobj); | |
9ead190b RD |
1934 | if (pd) |
1935 | put_pd_read(pd); | |
1936 | if (scq) | |
1937 | put_cq_read(scq); | |
43db2bc0 | 1938 | if (rcq && rcq != scq) |
9ead190b RD |
1939 | put_cq_read(rcq); |
1940 | if (srq) | |
1941 | put_srq_read(srq); | |
1942 | ||
1943 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1944 | return ret; |
1945 | } | |
1946 | ||
6d8a7497 EBE |
1947 | static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file, |
1948 | struct ib_uverbs_ex_create_qp_resp *resp, | |
1949 | struct ib_udata *ucore) | |
1950 | { | |
1951 | if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) | |
1952 | return -EFAULT; | |
1953 | ||
1954 | return 0; | |
1955 | } | |
1956 | ||
1957 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1958 | struct ib_device *ib_dev, | |
1959 | const char __user *buf, int in_len, | |
1960 | int out_len) | |
1961 | { | |
1962 | struct ib_uverbs_create_qp cmd; | |
1963 | struct ib_uverbs_ex_create_qp cmd_ex; | |
1964 | struct ib_udata ucore; | |
1965 | struct ib_udata uhw; | |
1966 | ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp); | |
1967 | int err; | |
1968 | ||
1969 | if (out_len < resp_size) | |
1970 | return -ENOSPC; | |
1971 | ||
1972 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1973 | return -EFAULT; | |
1974 | ||
1975 | INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), | |
1976 | resp_size); | |
1977 | INIT_UDATA(&uhw, buf + sizeof(cmd), | |
1978 | (unsigned long)cmd.response + resp_size, | |
3d943c9d MD |
1979 | in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), |
1980 | out_len - resp_size); | |
6d8a7497 EBE |
1981 | |
1982 | memset(&cmd_ex, 0, sizeof(cmd_ex)); | |
1983 | cmd_ex.user_handle = cmd.user_handle; | |
1984 | cmd_ex.pd_handle = cmd.pd_handle; | |
1985 | cmd_ex.send_cq_handle = cmd.send_cq_handle; | |
1986 | cmd_ex.recv_cq_handle = cmd.recv_cq_handle; | |
1987 | cmd_ex.srq_handle = cmd.srq_handle; | |
1988 | cmd_ex.max_send_wr = cmd.max_send_wr; | |
1989 | cmd_ex.max_recv_wr = cmd.max_recv_wr; | |
1990 | cmd_ex.max_send_sge = cmd.max_send_sge; | |
1991 | cmd_ex.max_recv_sge = cmd.max_recv_sge; | |
1992 | cmd_ex.max_inline_data = cmd.max_inline_data; | |
1993 | cmd_ex.sq_sig_all = cmd.sq_sig_all; | |
1994 | cmd_ex.qp_type = cmd.qp_type; | |
1995 | cmd_ex.is_srq = cmd.is_srq; | |
1996 | ||
1997 | err = create_qp(file, &ucore, &uhw, &cmd_ex, | |
1998 | offsetof(typeof(cmd_ex), is_srq) + | |
1999 | sizeof(cmd.is_srq), ib_uverbs_create_qp_cb, | |
2000 | NULL); | |
2001 | ||
2002 | if (err) | |
2003 | return err; | |
2004 | ||
2005 | return in_len; | |
2006 | } | |
2007 | ||
2008 | static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file, | |
2009 | struct ib_uverbs_ex_create_qp_resp *resp, | |
2010 | struct ib_udata *ucore) | |
2011 | { | |
2012 | if (ib_copy_to_udata(ucore, resp, resp->response_length)) | |
2013 | return -EFAULT; | |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file, | |
2019 | struct ib_device *ib_dev, | |
2020 | struct ib_udata *ucore, | |
2021 | struct ib_udata *uhw) | |
2022 | { | |
2023 | struct ib_uverbs_ex_create_qp_resp resp; | |
2024 | struct ib_uverbs_ex_create_qp cmd = {0}; | |
2025 | int err; | |
2026 | ||
2027 | if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) + | |
2028 | sizeof(cmd.comp_mask))) | |
2029 | return -EINVAL; | |
2030 | ||
2031 | err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); | |
2032 | if (err) | |
2033 | return err; | |
2034 | ||
2035 | if (cmd.comp_mask) | |
2036 | return -EINVAL; | |
2037 | ||
2038 | if (cmd.reserved) | |
2039 | return -EINVAL; | |
2040 | ||
2041 | if (ucore->outlen < (offsetof(typeof(resp), response_length) + | |
2042 | sizeof(resp.response_length))) | |
2043 | return -ENOSPC; | |
2044 | ||
2045 | err = create_qp(file, ucore, uhw, &cmd, | |
2046 | min(ucore->inlen, sizeof(cmd)), | |
2047 | ib_uverbs_ex_create_qp_cb, NULL); | |
2048 | ||
2049 | if (err) | |
2050 | return err; | |
2051 | ||
2052 | return 0; | |
2053 | } | |
2054 | ||
42849b26 | 2055 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
057aec0d | 2056 | struct ib_device *ib_dev, |
42849b26 SH |
2057 | const char __user *buf, int in_len, int out_len) |
2058 | { | |
2059 | struct ib_uverbs_open_qp cmd; | |
2060 | struct ib_uverbs_create_qp_resp resp; | |
2061 | struct ib_udata udata; | |
2062 | struct ib_uqp_object *obj; | |
2063 | struct ib_xrcd *xrcd; | |
2064 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
2065 | struct ib_qp *qp; | |
2066 | struct ib_qp_open_attr attr; | |
2067 | int ret; | |
2068 | ||
2069 | if (out_len < sizeof resp) | |
2070 | return -ENOSPC; | |
2071 | ||
2072 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2073 | return -EFAULT; | |
2074 | ||
2075 | INIT_UDATA(&udata, buf + sizeof cmd, | |
2076 | (unsigned long) cmd.response + sizeof resp, | |
2077 | in_len - sizeof cmd, out_len - sizeof resp); | |
2078 | ||
2079 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
2080 | if (!obj) | |
2081 | return -ENOMEM; | |
2082 | ||
3bea57a5 | 2083 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
42849b26 SH |
2084 | down_write(&obj->uevent.uobject.mutex); |
2085 | ||
2086 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
2087 | if (!xrcd) { | |
2088 | ret = -EINVAL; | |
2089 | goto err_put; | |
2090 | } | |
2091 | ||
2092 | attr.event_handler = ib_uverbs_qp_event_handler; | |
2093 | attr.qp_context = file; | |
2094 | attr.qp_num = cmd.qpn; | |
2095 | attr.qp_type = cmd.qp_type; | |
2096 | ||
2097 | obj->uevent.events_reported = 0; | |
2098 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
2099 | INIT_LIST_HEAD(&obj->mcast_list); | |
2100 | ||
2101 | qp = ib_open_qp(xrcd, &attr); | |
2102 | if (IS_ERR(qp)) { | |
2103 | ret = PTR_ERR(qp); | |
2104 | goto err_put; | |
2105 | } | |
2106 | ||
2107 | qp->uobject = &obj->uevent.uobject; | |
2108 | ||
2109 | obj->uevent.uobject.object = qp; | |
2110 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
2111 | if (ret) | |
2112 | goto err_destroy; | |
2113 | ||
2114 | memset(&resp, 0, sizeof resp); | |
2115 | resp.qpn = qp->qp_num; | |
2116 | resp.qp_handle = obj->uevent.uobject.id; | |
2117 | ||
2118 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2119 | &resp, sizeof resp)) { | |
2120 | ret = -EFAULT; | |
2121 | goto err_remove; | |
2122 | } | |
2123 | ||
846be90d YH |
2124 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
2125 | atomic_inc(&obj->uxrcd->refcnt); | |
42849b26 SH |
2126 | put_xrcd_read(xrcd_uobj); |
2127 | ||
2128 | mutex_lock(&file->mutex); | |
2129 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); | |
2130 | mutex_unlock(&file->mutex); | |
2131 | ||
2132 | obj->uevent.uobject.live = 1; | |
2133 | ||
2134 | up_write(&obj->uevent.uobject.mutex); | |
2135 | ||
2136 | return in_len; | |
2137 | ||
2138 | err_remove: | |
2139 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
2140 | ||
2141 | err_destroy: | |
2142 | ib_destroy_qp(qp); | |
2143 | ||
2144 | err_put: | |
2145 | put_xrcd_read(xrcd_uobj); | |
2146 | put_uobj_write(&obj->uevent.uobject); | |
2147 | return ret; | |
2148 | } | |
2149 | ||
7ccc9a24 | 2150 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
057aec0d | 2151 | struct ib_device *ib_dev, |
7ccc9a24 DB |
2152 | const char __user *buf, int in_len, |
2153 | int out_len) | |
2154 | { | |
2155 | struct ib_uverbs_query_qp cmd; | |
2156 | struct ib_uverbs_query_qp_resp resp; | |
2157 | struct ib_qp *qp; | |
2158 | struct ib_qp_attr *attr; | |
2159 | struct ib_qp_init_attr *init_attr; | |
2160 | int ret; | |
2161 | ||
2162 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2163 | return -EFAULT; | |
2164 | ||
2165 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
2166 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
2167 | if (!attr || !init_attr) { | |
2168 | ret = -ENOMEM; | |
2169 | goto out; | |
2170 | } | |
2171 | ||
9ead190b RD |
2172 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2173 | if (!qp) { | |
7ccc9a24 | 2174 | ret = -EINVAL; |
9ead190b RD |
2175 | goto out; |
2176 | } | |
2177 | ||
2178 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 2179 | |
9ead190b | 2180 | put_qp_read(qp); |
7ccc9a24 DB |
2181 | |
2182 | if (ret) | |
2183 | goto out; | |
2184 | ||
2185 | memset(&resp, 0, sizeof resp); | |
2186 | ||
2187 | resp.qp_state = attr->qp_state; | |
2188 | resp.cur_qp_state = attr->cur_qp_state; | |
2189 | resp.path_mtu = attr->path_mtu; | |
2190 | resp.path_mig_state = attr->path_mig_state; | |
2191 | resp.qkey = attr->qkey; | |
2192 | resp.rq_psn = attr->rq_psn; | |
2193 | resp.sq_psn = attr->sq_psn; | |
2194 | resp.dest_qp_num = attr->dest_qp_num; | |
2195 | resp.qp_access_flags = attr->qp_access_flags; | |
2196 | resp.pkey_index = attr->pkey_index; | |
2197 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 2198 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
2199 | resp.max_rd_atomic = attr->max_rd_atomic; |
2200 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
2201 | resp.min_rnr_timer = attr->min_rnr_timer; | |
2202 | resp.port_num = attr->port_num; | |
2203 | resp.timeout = attr->timeout; | |
2204 | resp.retry_cnt = attr->retry_cnt; | |
2205 | resp.rnr_retry = attr->rnr_retry; | |
2206 | resp.alt_port_num = attr->alt_port_num; | |
2207 | resp.alt_timeout = attr->alt_timeout; | |
2208 | ||
2209 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
2210 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
2211 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
2212 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
2213 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
2214 | resp.dest.dlid = attr->ah_attr.dlid; | |
2215 | resp.dest.sl = attr->ah_attr.sl; | |
2216 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
2217 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
2218 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
2219 | resp.dest.port_num = attr->ah_attr.port_num; | |
2220 | ||
2221 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
2222 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
2223 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
2224 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
2225 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
2226 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
2227 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
2228 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
2229 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
2230 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
2231 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
2232 | ||
2233 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
2234 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
2235 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
2236 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
2237 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 2238 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
2239 | |
2240 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2241 | &resp, sizeof resp)) | |
2242 | ret = -EFAULT; | |
2243 | ||
2244 | out: | |
2245 | kfree(attr); | |
2246 | kfree(init_attr); | |
2247 | ||
2248 | return ret ? ret : in_len; | |
2249 | } | |
2250 | ||
9977f4f6 SH |
2251 | /* Remove ignored fields set in the attribute mask */ |
2252 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) | |
2253 | { | |
2254 | switch (qp_type) { | |
2255 | case IB_QPT_XRC_INI: | |
2256 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); | |
b93f3c18 SH |
2257 | case IB_QPT_XRC_TGT: |
2258 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | | |
2259 | IB_QP_RNR_RETRY); | |
9977f4f6 SH |
2260 | default: |
2261 | return mask; | |
2262 | } | |
2263 | } | |
2264 | ||
bc38a6ab | 2265 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
057aec0d | 2266 | struct ib_device *ib_dev, |
bc38a6ab RD |
2267 | const char __user *buf, int in_len, |
2268 | int out_len) | |
2269 | { | |
2270 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 2271 | struct ib_udata udata; |
bc38a6ab RD |
2272 | struct ib_qp *qp; |
2273 | struct ib_qp_attr *attr; | |
2274 | int ret; | |
2275 | ||
2276 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2277 | return -EFAULT; | |
2278 | ||
9bc57e2d RC |
2279 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2280 | out_len); | |
2281 | ||
bc38a6ab RD |
2282 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
2283 | if (!attr) | |
2284 | return -ENOMEM; | |
2285 | ||
9ead190b RD |
2286 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2287 | if (!qp) { | |
bc38a6ab RD |
2288 | ret = -EINVAL; |
2289 | goto out; | |
2290 | } | |
2291 | ||
2292 | attr->qp_state = cmd.qp_state; | |
2293 | attr->cur_qp_state = cmd.cur_qp_state; | |
2294 | attr->path_mtu = cmd.path_mtu; | |
2295 | attr->path_mig_state = cmd.path_mig_state; | |
2296 | attr->qkey = cmd.qkey; | |
2297 | attr->rq_psn = cmd.rq_psn; | |
2298 | attr->sq_psn = cmd.sq_psn; | |
2299 | attr->dest_qp_num = cmd.dest_qp_num; | |
2300 | attr->qp_access_flags = cmd.qp_access_flags; | |
2301 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 2302 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
2303 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
2304 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
2305 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
2306 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
2307 | attr->port_num = cmd.port_num; | |
2308 | attr->timeout = cmd.timeout; | |
2309 | attr->retry_cnt = cmd.retry_cnt; | |
2310 | attr->rnr_retry = cmd.rnr_retry; | |
2311 | attr->alt_port_num = cmd.alt_port_num; | |
2312 | attr->alt_timeout = cmd.alt_timeout; | |
2313 | ||
2314 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
2315 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
2316 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
2317 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
2318 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
2319 | attr->ah_attr.dlid = cmd.dest.dlid; | |
2320 | attr->ah_attr.sl = cmd.dest.sl; | |
2321 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
2322 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
2323 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
2324 | attr->ah_attr.port_num = cmd.dest.port_num; | |
2325 | ||
2326 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
2327 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
2328 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
2329 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
2330 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
2331 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
2332 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
2333 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
2334 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
2335 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
2336 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
2337 | ||
0e0ec7e0 | 2338 | if (qp->real_qp == qp) { |
dbf727de | 2339 | ret = ib_resolve_eth_dmac(qp, attr, &cmd.attr_mask); |
ed4c54e5 | 2340 | if (ret) |
0fb8bcf0 | 2341 | goto release_qp; |
0e0ec7e0 SH |
2342 | ret = qp->device->modify_qp(qp, attr, |
2343 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); | |
2344 | } else { | |
2345 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); | |
2346 | } | |
9ead190b | 2347 | |
bc38a6ab | 2348 | if (ret) |
0fb8bcf0 | 2349 | goto release_qp; |
bc38a6ab RD |
2350 | |
2351 | ret = in_len; | |
2352 | ||
0fb8bcf0 ML |
2353 | release_qp: |
2354 | put_qp_read(qp); | |
2355 | ||
bc38a6ab | 2356 | out: |
bc38a6ab RD |
2357 | kfree(attr); |
2358 | ||
2359 | return ret; | |
2360 | } | |
2361 | ||
2362 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
057aec0d | 2363 | struct ib_device *ib_dev, |
bc38a6ab RD |
2364 | const char __user *buf, int in_len, |
2365 | int out_len) | |
2366 | { | |
63aaf647 RD |
2367 | struct ib_uverbs_destroy_qp cmd; |
2368 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 2369 | struct ib_uobject *uobj; |
63aaf647 | 2370 | struct ib_qp *qp; |
9ead190b | 2371 | struct ib_uqp_object *obj; |
63aaf647 | 2372 | int ret = -EINVAL; |
bc38a6ab RD |
2373 | |
2374 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2375 | return -EFAULT; | |
2376 | ||
63aaf647 RD |
2377 | memset(&resp, 0, sizeof resp); |
2378 | ||
9ead190b RD |
2379 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
2380 | if (!uobj) | |
2381 | return -EINVAL; | |
2382 | qp = uobj->object; | |
2383 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 2384 | |
9ead190b RD |
2385 | if (!list_empty(&obj->mcast_list)) { |
2386 | put_uobj_write(uobj); | |
2387 | return -EBUSY; | |
f4e40156 | 2388 | } |
bc38a6ab RD |
2389 | |
2390 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
2391 | if (!ret) |
2392 | uobj->live = 0; | |
2393 | ||
2394 | put_uobj_write(uobj); | |
2395 | ||
bc38a6ab | 2396 | if (ret) |
9ead190b | 2397 | return ret; |
bc38a6ab | 2398 | |
846be90d YH |
2399 | if (obj->uxrcd) |
2400 | atomic_dec(&obj->uxrcd->refcnt); | |
2401 | ||
9ead190b | 2402 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 2403 | |
95ed644f | 2404 | mutex_lock(&file->mutex); |
9ead190b | 2405 | list_del(&uobj->list); |
95ed644f | 2406 | mutex_unlock(&file->mutex); |
bc38a6ab | 2407 | |
9ead190b | 2408 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 2409 | |
9ead190b | 2410 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 2411 | |
9ead190b | 2412 | put_uobj(uobj); |
bc38a6ab | 2413 | |
63aaf647 RD |
2414 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2415 | &resp, sizeof resp)) | |
9ead190b | 2416 | return -EFAULT; |
bc38a6ab | 2417 | |
9ead190b | 2418 | return in_len; |
bc38a6ab RD |
2419 | } |
2420 | ||
e622f2f4 CH |
2421 | static void *alloc_wr(size_t wr_size, __u32 num_sge) |
2422 | { | |
2423 | return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + | |
2424 | num_sge * sizeof (struct ib_sge), GFP_KERNEL); | |
2425 | }; | |
2426 | ||
67cdb40c | 2427 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
057aec0d | 2428 | struct ib_device *ib_dev, |
a74cd4af RD |
2429 | const char __user *buf, int in_len, |
2430 | int out_len) | |
67cdb40c RD |
2431 | { |
2432 | struct ib_uverbs_post_send cmd; | |
2433 | struct ib_uverbs_post_send_resp resp; | |
2434 | struct ib_uverbs_send_wr *user_wr; | |
2435 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
2436 | struct ib_qp *qp; | |
2437 | int i, sg_ind; | |
9ead190b | 2438 | int is_ud; |
67cdb40c | 2439 | ssize_t ret = -EINVAL; |
1d784b89 | 2440 | size_t next_size; |
67cdb40c RD |
2441 | |
2442 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2443 | return -EFAULT; | |
2444 | ||
2445 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
2446 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
2447 | return -EINVAL; | |
2448 | ||
2449 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
2450 | return -EINVAL; | |
2451 | ||
2452 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
2453 | if (!user_wr) | |
2454 | return -ENOMEM; | |
2455 | ||
9ead190b RD |
2456 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2457 | if (!qp) | |
67cdb40c RD |
2458 | goto out; |
2459 | ||
9ead190b | 2460 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
2461 | sg_ind = 0; |
2462 | last = NULL; | |
2463 | for (i = 0; i < cmd.wr_count; ++i) { | |
2464 | if (copy_from_user(user_wr, | |
2465 | buf + sizeof cmd + i * cmd.wqe_size, | |
2466 | cmd.wqe_size)) { | |
2467 | ret = -EFAULT; | |
9ead190b | 2468 | goto out_put; |
67cdb40c RD |
2469 | } |
2470 | ||
2471 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
2472 | ret = -EINVAL; | |
9ead190b | 2473 | goto out_put; |
67cdb40c RD |
2474 | } |
2475 | ||
e622f2f4 CH |
2476 | if (is_ud) { |
2477 | struct ib_ud_wr *ud; | |
2478 | ||
2479 | if (user_wr->opcode != IB_WR_SEND && | |
2480 | user_wr->opcode != IB_WR_SEND_WITH_IMM) { | |
2481 | ret = -EINVAL; | |
2482 | goto out_put; | |
2483 | } | |
2484 | ||
1d784b89 MM |
2485 | next_size = sizeof(*ud); |
2486 | ud = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2487 | if (!ud) { |
2488 | ret = -ENOMEM; | |
2489 | goto out_put; | |
2490 | } | |
2491 | ||
2492 | ud->ah = idr_read_ah(user_wr->wr.ud.ah, file->ucontext); | |
2493 | if (!ud->ah) { | |
2494 | kfree(ud); | |
2495 | ret = -EINVAL; | |
2496 | goto out_put; | |
2497 | } | |
2498 | ud->remote_qpn = user_wr->wr.ud.remote_qpn; | |
2499 | ud->remote_qkey = user_wr->wr.ud.remote_qkey; | |
2500 | ||
2501 | next = &ud->wr; | |
2502 | } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || | |
2503 | user_wr->opcode == IB_WR_RDMA_WRITE || | |
2504 | user_wr->opcode == IB_WR_RDMA_READ) { | |
2505 | struct ib_rdma_wr *rdma; | |
2506 | ||
1d784b89 MM |
2507 | next_size = sizeof(*rdma); |
2508 | rdma = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2509 | if (!rdma) { |
2510 | ret = -ENOMEM; | |
2511 | goto out_put; | |
2512 | } | |
2513 | ||
2514 | rdma->remote_addr = user_wr->wr.rdma.remote_addr; | |
2515 | rdma->rkey = user_wr->wr.rdma.rkey; | |
2516 | ||
2517 | next = &rdma->wr; | |
2518 | } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || | |
2519 | user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { | |
2520 | struct ib_atomic_wr *atomic; | |
2521 | ||
1d784b89 MM |
2522 | next_size = sizeof(*atomic); |
2523 | atomic = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2524 | if (!atomic) { |
2525 | ret = -ENOMEM; | |
2526 | goto out_put; | |
2527 | } | |
2528 | ||
2529 | atomic->remote_addr = user_wr->wr.atomic.remote_addr; | |
2530 | atomic->compare_add = user_wr->wr.atomic.compare_add; | |
2531 | atomic->swap = user_wr->wr.atomic.swap; | |
2532 | atomic->rkey = user_wr->wr.atomic.rkey; | |
2533 | ||
2534 | next = &atomic->wr; | |
2535 | } else if (user_wr->opcode == IB_WR_SEND || | |
2536 | user_wr->opcode == IB_WR_SEND_WITH_IMM || | |
2537 | user_wr->opcode == IB_WR_SEND_WITH_INV) { | |
1d784b89 MM |
2538 | next_size = sizeof(*next); |
2539 | next = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2540 | if (!next) { |
2541 | ret = -ENOMEM; | |
2542 | goto out_put; | |
2543 | } | |
2544 | } else { | |
2545 | ret = -EINVAL; | |
9ead190b | 2546 | goto out_put; |
67cdb40c RD |
2547 | } |
2548 | ||
e622f2f4 CH |
2549 | if (user_wr->opcode == IB_WR_SEND_WITH_IMM || |
2550 | user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { | |
2551 | next->ex.imm_data = | |
2552 | (__be32 __force) user_wr->ex.imm_data; | |
2553 | } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { | |
2554 | next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; | |
2555 | } | |
2556 | ||
67cdb40c RD |
2557 | if (!last) |
2558 | wr = next; | |
2559 | else | |
2560 | last->next = next; | |
2561 | last = next; | |
2562 | ||
2563 | next->next = NULL; | |
2564 | next->wr_id = user_wr->wr_id; | |
2565 | next->num_sge = user_wr->num_sge; | |
2566 | next->opcode = user_wr->opcode; | |
2567 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 2568 | |
67cdb40c RD |
2569 | if (next->num_sge) { |
2570 | next->sg_list = (void *) next + | |
1d784b89 | 2571 | ALIGN(next_size, sizeof(struct ib_sge)); |
67cdb40c RD |
2572 | if (copy_from_user(next->sg_list, |
2573 | buf + sizeof cmd + | |
2574 | cmd.wr_count * cmd.wqe_size + | |
2575 | sg_ind * sizeof (struct ib_sge), | |
2576 | next->num_sge * sizeof (struct ib_sge))) { | |
2577 | ret = -EFAULT; | |
9ead190b | 2578 | goto out_put; |
67cdb40c RD |
2579 | } |
2580 | sg_ind += next->num_sge; | |
2581 | } else | |
2582 | next->sg_list = NULL; | |
2583 | } | |
2584 | ||
2585 | resp.bad_wr = 0; | |
0e0ec7e0 | 2586 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
67cdb40c RD |
2587 | if (ret) |
2588 | for (next = wr; next; next = next->next) { | |
2589 | ++resp.bad_wr; | |
2590 | if (next == bad_wr) | |
2591 | break; | |
2592 | } | |
2593 | ||
2594 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2595 | &resp, sizeof resp)) | |
2596 | ret = -EFAULT; | |
2597 | ||
9ead190b RD |
2598 | out_put: |
2599 | put_qp_read(qp); | |
67cdb40c RD |
2600 | |
2601 | while (wr) { | |
e622f2f4 CH |
2602 | if (is_ud && ud_wr(wr)->ah) |
2603 | put_ah_read(ud_wr(wr)->ah); | |
67cdb40c RD |
2604 | next = wr->next; |
2605 | kfree(wr); | |
2606 | wr = next; | |
2607 | } | |
2608 | ||
18320828 | 2609 | out: |
67cdb40c RD |
2610 | kfree(user_wr); |
2611 | ||
2612 | return ret ? ret : in_len; | |
2613 | } | |
2614 | ||
2615 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
2616 | int in_len, | |
2617 | u32 wr_count, | |
2618 | u32 sge_count, | |
2619 | u32 wqe_size) | |
2620 | { | |
2621 | struct ib_uverbs_recv_wr *user_wr; | |
2622 | struct ib_recv_wr *wr = NULL, *last, *next; | |
2623 | int sg_ind; | |
2624 | int i; | |
2625 | int ret; | |
2626 | ||
2627 | if (in_len < wqe_size * wr_count + | |
2628 | sge_count * sizeof (struct ib_uverbs_sge)) | |
2629 | return ERR_PTR(-EINVAL); | |
2630 | ||
2631 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
2632 | return ERR_PTR(-EINVAL); | |
2633 | ||
2634 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
2635 | if (!user_wr) | |
2636 | return ERR_PTR(-ENOMEM); | |
2637 | ||
2638 | sg_ind = 0; | |
2639 | last = NULL; | |
2640 | for (i = 0; i < wr_count; ++i) { | |
2641 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
2642 | wqe_size)) { | |
2643 | ret = -EFAULT; | |
2644 | goto err; | |
2645 | } | |
2646 | ||
2647 | if (user_wr->num_sge + sg_ind > sge_count) { | |
2648 | ret = -EINVAL; | |
2649 | goto err; | |
2650 | } | |
2651 | ||
2652 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2653 | user_wr->num_sge * sizeof (struct ib_sge), | |
2654 | GFP_KERNEL); | |
2655 | if (!next) { | |
2656 | ret = -ENOMEM; | |
2657 | goto err; | |
2658 | } | |
2659 | ||
2660 | if (!last) | |
2661 | wr = next; | |
2662 | else | |
2663 | last->next = next; | |
2664 | last = next; | |
2665 | ||
2666 | next->next = NULL; | |
2667 | next->wr_id = user_wr->wr_id; | |
2668 | next->num_sge = user_wr->num_sge; | |
2669 | ||
2670 | if (next->num_sge) { | |
2671 | next->sg_list = (void *) next + | |
2672 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2673 | if (copy_from_user(next->sg_list, | |
2674 | buf + wr_count * wqe_size + | |
2675 | sg_ind * sizeof (struct ib_sge), | |
2676 | next->num_sge * sizeof (struct ib_sge))) { | |
2677 | ret = -EFAULT; | |
2678 | goto err; | |
2679 | } | |
2680 | sg_ind += next->num_sge; | |
2681 | } else | |
2682 | next->sg_list = NULL; | |
2683 | } | |
2684 | ||
2685 | kfree(user_wr); | |
2686 | return wr; | |
2687 | ||
2688 | err: | |
2689 | kfree(user_wr); | |
2690 | ||
2691 | while (wr) { | |
2692 | next = wr->next; | |
2693 | kfree(wr); | |
2694 | wr = next; | |
2695 | } | |
2696 | ||
2697 | return ERR_PTR(ret); | |
2698 | } | |
2699 | ||
2700 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
057aec0d | 2701 | struct ib_device *ib_dev, |
a74cd4af RD |
2702 | const char __user *buf, int in_len, |
2703 | int out_len) | |
67cdb40c RD |
2704 | { |
2705 | struct ib_uverbs_post_recv cmd; | |
2706 | struct ib_uverbs_post_recv_resp resp; | |
2707 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2708 | struct ib_qp *qp; | |
2709 | ssize_t ret = -EINVAL; | |
2710 | ||
2711 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2712 | return -EFAULT; | |
2713 | ||
2714 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2715 | in_len - sizeof cmd, cmd.wr_count, | |
2716 | cmd.sge_count, cmd.wqe_size); | |
2717 | if (IS_ERR(wr)) | |
2718 | return PTR_ERR(wr); | |
2719 | ||
9ead190b RD |
2720 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2721 | if (!qp) | |
67cdb40c RD |
2722 | goto out; |
2723 | ||
2724 | resp.bad_wr = 0; | |
0e0ec7e0 | 2725 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
9ead190b RD |
2726 | |
2727 | put_qp_read(qp); | |
2728 | ||
67cdb40c RD |
2729 | if (ret) |
2730 | for (next = wr; next; next = next->next) { | |
2731 | ++resp.bad_wr; | |
2732 | if (next == bad_wr) | |
2733 | break; | |
2734 | } | |
2735 | ||
67cdb40c RD |
2736 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2737 | &resp, sizeof resp)) | |
2738 | ret = -EFAULT; | |
2739 | ||
2740 | out: | |
67cdb40c RD |
2741 | while (wr) { |
2742 | next = wr->next; | |
2743 | kfree(wr); | |
2744 | wr = next; | |
2745 | } | |
2746 | ||
2747 | return ret ? ret : in_len; | |
2748 | } | |
2749 | ||
2750 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
057aec0d | 2751 | struct ib_device *ib_dev, |
a74cd4af RD |
2752 | const char __user *buf, int in_len, |
2753 | int out_len) | |
67cdb40c RD |
2754 | { |
2755 | struct ib_uverbs_post_srq_recv cmd; | |
2756 | struct ib_uverbs_post_srq_recv_resp resp; | |
2757 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2758 | struct ib_srq *srq; | |
2759 | ssize_t ret = -EINVAL; | |
2760 | ||
2761 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2762 | return -EFAULT; | |
2763 | ||
2764 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2765 | in_len - sizeof cmd, cmd.wr_count, | |
2766 | cmd.sge_count, cmd.wqe_size); | |
2767 | if (IS_ERR(wr)) | |
2768 | return PTR_ERR(wr); | |
2769 | ||
9ead190b RD |
2770 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2771 | if (!srq) | |
67cdb40c RD |
2772 | goto out; |
2773 | ||
2774 | resp.bad_wr = 0; | |
2775 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
2776 | |
2777 | put_srq_read(srq); | |
2778 | ||
67cdb40c RD |
2779 | if (ret) |
2780 | for (next = wr; next; next = next->next) { | |
2781 | ++resp.bad_wr; | |
2782 | if (next == bad_wr) | |
2783 | break; | |
2784 | } | |
2785 | ||
67cdb40c RD |
2786 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2787 | &resp, sizeof resp)) | |
2788 | ret = -EFAULT; | |
2789 | ||
2790 | out: | |
67cdb40c RD |
2791 | while (wr) { |
2792 | next = wr->next; | |
2793 | kfree(wr); | |
2794 | wr = next; | |
2795 | } | |
2796 | ||
2797 | return ret ? ret : in_len; | |
2798 | } | |
2799 | ||
2800 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
057aec0d | 2801 | struct ib_device *ib_dev, |
67cdb40c RD |
2802 | const char __user *buf, int in_len, |
2803 | int out_len) | |
2804 | { | |
2805 | struct ib_uverbs_create_ah cmd; | |
2806 | struct ib_uverbs_create_ah_resp resp; | |
2807 | struct ib_uobject *uobj; | |
2808 | struct ib_pd *pd; | |
2809 | struct ib_ah *ah; | |
2810 | struct ib_ah_attr attr; | |
2811 | int ret; | |
2812 | ||
2813 | if (out_len < sizeof resp) | |
2814 | return -ENOSPC; | |
2815 | ||
2816 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2817 | return -EFAULT; | |
2818 | ||
2819 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
2820 | if (!uobj) | |
2821 | return -ENOMEM; | |
2822 | ||
3bea57a5 | 2823 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class); |
9ead190b | 2824 | down_write(&uobj->mutex); |
67cdb40c | 2825 | |
9ead190b RD |
2826 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2827 | if (!pd) { | |
67cdb40c | 2828 | ret = -EINVAL; |
9ead190b | 2829 | goto err; |
67cdb40c RD |
2830 | } |
2831 | ||
67cdb40c RD |
2832 | attr.dlid = cmd.attr.dlid; |
2833 | attr.sl = cmd.attr.sl; | |
2834 | attr.src_path_bits = cmd.attr.src_path_bits; | |
2835 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 2836 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
2837 | attr.port_num = cmd.attr.port_num; |
2838 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
2839 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
2840 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
2841 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
8b0f93d9 | 2842 | memset(&attr.dmac, 0, sizeof(attr.dmac)); |
67cdb40c RD |
2843 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); |
2844 | ||
2845 | ah = ib_create_ah(pd, &attr); | |
2846 | if (IS_ERR(ah)) { | |
2847 | ret = PTR_ERR(ah); | |
ec924b47 | 2848 | goto err_put; |
67cdb40c RD |
2849 | } |
2850 | ||
9ead190b RD |
2851 | ah->uobject = uobj; |
2852 | uobj->object = ah; | |
67cdb40c | 2853 | |
9ead190b | 2854 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
2855 | if (ret) |
2856 | goto err_destroy; | |
2857 | ||
2858 | resp.ah_handle = uobj->id; | |
2859 | ||
2860 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2861 | &resp, sizeof resp)) { | |
2862 | ret = -EFAULT; | |
9ead190b | 2863 | goto err_copy; |
67cdb40c RD |
2864 | } |
2865 | ||
9ead190b RD |
2866 | put_pd_read(pd); |
2867 | ||
95ed644f | 2868 | mutex_lock(&file->mutex); |
67cdb40c | 2869 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 2870 | mutex_unlock(&file->mutex); |
67cdb40c | 2871 | |
9ead190b RD |
2872 | uobj->live = 1; |
2873 | ||
2874 | up_write(&uobj->mutex); | |
67cdb40c RD |
2875 | |
2876 | return in_len; | |
2877 | ||
9ead190b RD |
2878 | err_copy: |
2879 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
2880 | |
2881 | err_destroy: | |
2882 | ib_destroy_ah(ah); | |
2883 | ||
ec924b47 MT |
2884 | err_put: |
2885 | put_pd_read(pd); | |
2886 | ||
9ead190b RD |
2887 | err: |
2888 | put_uobj_write(uobj); | |
67cdb40c RD |
2889 | return ret; |
2890 | } | |
2891 | ||
2892 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
057aec0d | 2893 | struct ib_device *ib_dev, |
67cdb40c RD |
2894 | const char __user *buf, int in_len, int out_len) |
2895 | { | |
2896 | struct ib_uverbs_destroy_ah cmd; | |
2897 | struct ib_ah *ah; | |
2898 | struct ib_uobject *uobj; | |
9ead190b | 2899 | int ret; |
67cdb40c RD |
2900 | |
2901 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2902 | return -EFAULT; | |
2903 | ||
9ead190b RD |
2904 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
2905 | if (!uobj) | |
2906 | return -EINVAL; | |
2907 | ah = uobj->object; | |
67cdb40c | 2908 | |
9ead190b RD |
2909 | ret = ib_destroy_ah(ah); |
2910 | if (!ret) | |
2911 | uobj->live = 0; | |
67cdb40c | 2912 | |
9ead190b | 2913 | put_uobj_write(uobj); |
67cdb40c | 2914 | |
67cdb40c | 2915 | if (ret) |
9ead190b | 2916 | return ret; |
67cdb40c | 2917 | |
9ead190b | 2918 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 2919 | |
95ed644f | 2920 | mutex_lock(&file->mutex); |
67cdb40c | 2921 | list_del(&uobj->list); |
95ed644f | 2922 | mutex_unlock(&file->mutex); |
67cdb40c | 2923 | |
9ead190b | 2924 | put_uobj(uobj); |
67cdb40c | 2925 | |
9ead190b | 2926 | return in_len; |
67cdb40c RD |
2927 | } |
2928 | ||
bc38a6ab | 2929 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
057aec0d | 2930 | struct ib_device *ib_dev, |
bc38a6ab RD |
2931 | const char __user *buf, int in_len, |
2932 | int out_len) | |
2933 | { | |
2934 | struct ib_uverbs_attach_mcast cmd; | |
2935 | struct ib_qp *qp; | |
9ead190b | 2936 | struct ib_uqp_object *obj; |
f4e40156 | 2937 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 2938 | int ret; |
bc38a6ab RD |
2939 | |
2940 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2941 | return -EFAULT; | |
2942 | ||
e214a0fe | 2943 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2944 | if (!qp) |
2945 | return -EINVAL; | |
f4e40156 | 2946 | |
9ead190b | 2947 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2948 | |
9ead190b | 2949 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2950 | if (cmd.mlid == mcast->lid && |
2951 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2952 | ret = 0; | |
9ead190b | 2953 | goto out_put; |
f4e40156 JM |
2954 | } |
2955 | ||
2956 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
2957 | if (!mcast) { | |
2958 | ret = -ENOMEM; | |
9ead190b | 2959 | goto out_put; |
f4e40156 JM |
2960 | } |
2961 | ||
2962 | mcast->lid = cmd.mlid; | |
2963 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 2964 | |
f4e40156 | 2965 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
2966 | if (!ret) |
2967 | list_add_tail(&mcast->list, &obj->mcast_list); | |
2968 | else | |
f4e40156 JM |
2969 | kfree(mcast); |
2970 | ||
9ead190b | 2971 | out_put: |
e214a0fe | 2972 | put_qp_write(qp); |
bc38a6ab RD |
2973 | |
2974 | return ret ? ret : in_len; | |
2975 | } | |
2976 | ||
2977 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
057aec0d | 2978 | struct ib_device *ib_dev, |
bc38a6ab RD |
2979 | const char __user *buf, int in_len, |
2980 | int out_len) | |
2981 | { | |
2982 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 2983 | struct ib_uqp_object *obj; |
bc38a6ab | 2984 | struct ib_qp *qp; |
f4e40156 | 2985 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
2986 | int ret = -EINVAL; |
2987 | ||
2988 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2989 | return -EFAULT; | |
2990 | ||
e214a0fe | 2991 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2992 | if (!qp) |
2993 | return -EINVAL; | |
bc38a6ab | 2994 | |
f4e40156 JM |
2995 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
2996 | if (ret) | |
9ead190b | 2997 | goto out_put; |
f4e40156 | 2998 | |
9ead190b | 2999 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 3000 | |
9ead190b | 3001 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
3002 | if (cmd.mlid == mcast->lid && |
3003 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
3004 | list_del(&mcast->list); | |
3005 | kfree(mcast); | |
3006 | break; | |
3007 | } | |
3008 | ||
9ead190b | 3009 | out_put: |
e214a0fe | 3010 | put_qp_write(qp); |
bc38a6ab RD |
3011 | |
3012 | return ret ? ret : in_len; | |
3013 | } | |
f520ba5a | 3014 | |
b68c9560 | 3015 | static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, |
436f2ad0 HHZ |
3016 | union ib_flow_spec *ib_spec) |
3017 | { | |
c780d82a YD |
3018 | if (kern_spec->reserved) |
3019 | return -EINVAL; | |
3020 | ||
436f2ad0 HHZ |
3021 | ib_spec->type = kern_spec->type; |
3022 | ||
3023 | switch (ib_spec->type) { | |
3024 | case IB_FLOW_SPEC_ETH: | |
3025 | ib_spec->eth.size = sizeof(struct ib_flow_spec_eth); | |
3026 | if (ib_spec->eth.size != kern_spec->eth.size) | |
3027 | return -EINVAL; | |
3028 | memcpy(&ib_spec->eth.val, &kern_spec->eth.val, | |
3029 | sizeof(struct ib_flow_eth_filter)); | |
3030 | memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask, | |
3031 | sizeof(struct ib_flow_eth_filter)); | |
3032 | break; | |
3033 | case IB_FLOW_SPEC_IPV4: | |
3034 | ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4); | |
3035 | if (ib_spec->ipv4.size != kern_spec->ipv4.size) | |
3036 | return -EINVAL; | |
3037 | memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val, | |
3038 | sizeof(struct ib_flow_ipv4_filter)); | |
3039 | memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask, | |
3040 | sizeof(struct ib_flow_ipv4_filter)); | |
3041 | break; | |
3042 | case IB_FLOW_SPEC_TCP: | |
3043 | case IB_FLOW_SPEC_UDP: | |
3044 | ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp); | |
3045 | if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size) | |
3046 | return -EINVAL; | |
3047 | memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val, | |
3048 | sizeof(struct ib_flow_tcp_udp_filter)); | |
3049 | memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask, | |
3050 | sizeof(struct ib_flow_tcp_udp_filter)); | |
3051 | break; | |
3052 | default: | |
3053 | return -EINVAL; | |
3054 | } | |
3055 | return 0; | |
3056 | } | |
3057 | ||
f21519b2 | 3058 | int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, |
057aec0d | 3059 | struct ib_device *ib_dev, |
f21519b2 YD |
3060 | struct ib_udata *ucore, |
3061 | struct ib_udata *uhw) | |
436f2ad0 HHZ |
3062 | { |
3063 | struct ib_uverbs_create_flow cmd; | |
3064 | struct ib_uverbs_create_flow_resp resp; | |
3065 | struct ib_uobject *uobj; | |
3066 | struct ib_flow *flow_id; | |
d82693da | 3067 | struct ib_uverbs_flow_attr *kern_flow_attr; |
436f2ad0 HHZ |
3068 | struct ib_flow_attr *flow_attr; |
3069 | struct ib_qp *qp; | |
3070 | int err = 0; | |
3071 | void *kern_spec; | |
3072 | void *ib_spec; | |
3073 | int i; | |
436f2ad0 | 3074 | |
6bcca3d4 YD |
3075 | if (ucore->inlen < sizeof(cmd)) |
3076 | return -EINVAL; | |
3077 | ||
f21519b2 | 3078 | if (ucore->outlen < sizeof(resp)) |
436f2ad0 HHZ |
3079 | return -ENOSPC; |
3080 | ||
f21519b2 YD |
3081 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
3082 | if (err) | |
3083 | return err; | |
3084 | ||
3085 | ucore->inbuf += sizeof(cmd); | |
3086 | ucore->inlen -= sizeof(cmd); | |
436f2ad0 | 3087 | |
22878dbc MB |
3088 | if (cmd.comp_mask) |
3089 | return -EINVAL; | |
3090 | ||
436f2ad0 HHZ |
3091 | if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER && |
3092 | !capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW)) | |
3093 | return -EPERM; | |
3094 | ||
a3100a78 MV |
3095 | if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) |
3096 | return -EINVAL; | |
3097 | ||
3098 | if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && | |
3099 | ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || | |
3100 | (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) | |
3101 | return -EINVAL; | |
3102 | ||
f8848274 | 3103 | if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) |
22878dbc MB |
3104 | return -EINVAL; |
3105 | ||
f21519b2 | 3106 | if (cmd.flow_attr.size > ucore->inlen || |
f8848274 | 3107 | cmd.flow_attr.size > |
b68c9560 | 3108 | (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) |
22878dbc MB |
3109 | return -EINVAL; |
3110 | ||
c780d82a YD |
3111 | if (cmd.flow_attr.reserved[0] || |
3112 | cmd.flow_attr.reserved[1]) | |
3113 | return -EINVAL; | |
3114 | ||
436f2ad0 | 3115 | if (cmd.flow_attr.num_of_specs) { |
f8848274 MB |
3116 | kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, |
3117 | GFP_KERNEL); | |
436f2ad0 HHZ |
3118 | if (!kern_flow_attr) |
3119 | return -ENOMEM; | |
3120 | ||
3121 | memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); | |
f21519b2 YD |
3122 | err = ib_copy_from_udata(kern_flow_attr + 1, ucore, |
3123 | cmd.flow_attr.size); | |
3124 | if (err) | |
436f2ad0 | 3125 | goto err_free_attr; |
436f2ad0 HHZ |
3126 | } else { |
3127 | kern_flow_attr = &cmd.flow_attr; | |
436f2ad0 HHZ |
3128 | } |
3129 | ||
3130 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
3131 | if (!uobj) { | |
3132 | err = -ENOMEM; | |
3133 | goto err_free_attr; | |
3134 | } | |
3135 | init_uobj(uobj, 0, file->ucontext, &rule_lock_class); | |
3136 | down_write(&uobj->mutex); | |
3137 | ||
3138 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); | |
3139 | if (!qp) { | |
3140 | err = -EINVAL; | |
3141 | goto err_uobj; | |
3142 | } | |
3143 | ||
f8848274 | 3144 | flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL); |
436f2ad0 HHZ |
3145 | if (!flow_attr) { |
3146 | err = -ENOMEM; | |
3147 | goto err_put; | |
3148 | } | |
3149 | ||
3150 | flow_attr->type = kern_flow_attr->type; | |
3151 | flow_attr->priority = kern_flow_attr->priority; | |
3152 | flow_attr->num_of_specs = kern_flow_attr->num_of_specs; | |
3153 | flow_attr->port = kern_flow_attr->port; | |
3154 | flow_attr->flags = kern_flow_attr->flags; | |
3155 | flow_attr->size = sizeof(*flow_attr); | |
3156 | ||
3157 | kern_spec = kern_flow_attr + 1; | |
3158 | ib_spec = flow_attr + 1; | |
f8848274 | 3159 | for (i = 0; i < flow_attr->num_of_specs && |
b68c9560 | 3160 | cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) && |
f8848274 | 3161 | cmd.flow_attr.size >= |
b68c9560 | 3162 | ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) { |
436f2ad0 HHZ |
3163 | err = kern_spec_to_ib_spec(kern_spec, ib_spec); |
3164 | if (err) | |
3165 | goto err_free; | |
3166 | flow_attr->size += | |
3167 | ((union ib_flow_spec *) ib_spec)->size; | |
b68c9560 YD |
3168 | cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; |
3169 | kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size; | |
436f2ad0 HHZ |
3170 | ib_spec += ((union ib_flow_spec *) ib_spec)->size; |
3171 | } | |
f8848274 MB |
3172 | if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { |
3173 | pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", | |
3174 | i, cmd.flow_attr.size); | |
98a37510 | 3175 | err = -EINVAL; |
436f2ad0 HHZ |
3176 | goto err_free; |
3177 | } | |
3178 | flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); | |
3179 | if (IS_ERR(flow_id)) { | |
3180 | err = PTR_ERR(flow_id); | |
3181 | goto err_free; | |
3182 | } | |
3183 | flow_id->qp = qp; | |
3184 | flow_id->uobject = uobj; | |
3185 | uobj->object = flow_id; | |
3186 | ||
3187 | err = idr_add_uobj(&ib_uverbs_rule_idr, uobj); | |
3188 | if (err) | |
3189 | goto destroy_flow; | |
3190 | ||
3191 | memset(&resp, 0, sizeof(resp)); | |
3192 | resp.flow_handle = uobj->id; | |
3193 | ||
f21519b2 YD |
3194 | err = ib_copy_to_udata(ucore, |
3195 | &resp, sizeof(resp)); | |
3196 | if (err) | |
436f2ad0 | 3197 | goto err_copy; |
436f2ad0 HHZ |
3198 | |
3199 | put_qp_read(qp); | |
3200 | mutex_lock(&file->mutex); | |
3201 | list_add_tail(&uobj->list, &file->ucontext->rule_list); | |
3202 | mutex_unlock(&file->mutex); | |
3203 | ||
3204 | uobj->live = 1; | |
3205 | ||
3206 | up_write(&uobj->mutex); | |
3207 | kfree(flow_attr); | |
3208 | if (cmd.flow_attr.num_of_specs) | |
3209 | kfree(kern_flow_attr); | |
f21519b2 | 3210 | return 0; |
436f2ad0 HHZ |
3211 | err_copy: |
3212 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
3213 | destroy_flow: | |
3214 | ib_destroy_flow(flow_id); | |
3215 | err_free: | |
3216 | kfree(flow_attr); | |
3217 | err_put: | |
3218 | put_qp_read(qp); | |
3219 | err_uobj: | |
3220 | put_uobj_write(uobj); | |
3221 | err_free_attr: | |
3222 | if (cmd.flow_attr.num_of_specs) | |
3223 | kfree(kern_flow_attr); | |
3224 | return err; | |
3225 | } | |
3226 | ||
f21519b2 | 3227 | int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, |
057aec0d | 3228 | struct ib_device *ib_dev, |
f21519b2 YD |
3229 | struct ib_udata *ucore, |
3230 | struct ib_udata *uhw) | |
3231 | { | |
436f2ad0 HHZ |
3232 | struct ib_uverbs_destroy_flow cmd; |
3233 | struct ib_flow *flow_id; | |
3234 | struct ib_uobject *uobj; | |
3235 | int ret; | |
3236 | ||
6bcca3d4 YD |
3237 | if (ucore->inlen < sizeof(cmd)) |
3238 | return -EINVAL; | |
3239 | ||
f21519b2 YD |
3240 | ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
3241 | if (ret) | |
3242 | return ret; | |
436f2ad0 | 3243 | |
2782c2d3 YD |
3244 | if (cmd.comp_mask) |
3245 | return -EINVAL; | |
3246 | ||
436f2ad0 HHZ |
3247 | uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle, |
3248 | file->ucontext); | |
3249 | if (!uobj) | |
3250 | return -EINVAL; | |
3251 | flow_id = uobj->object; | |
3252 | ||
3253 | ret = ib_destroy_flow(flow_id); | |
3254 | if (!ret) | |
3255 | uobj->live = 0; | |
3256 | ||
3257 | put_uobj_write(uobj); | |
3258 | ||
3259 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
3260 | ||
3261 | mutex_lock(&file->mutex); | |
3262 | list_del(&uobj->list); | |
3263 | mutex_unlock(&file->mutex); | |
3264 | ||
3265 | put_uobj(uobj); | |
3266 | ||
f21519b2 | 3267 | return ret; |
436f2ad0 HHZ |
3268 | } |
3269 | ||
c89d1bed | 3270 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
057aec0d | 3271 | struct ib_device *ib_dev, |
c89d1bed SH |
3272 | struct ib_uverbs_create_xsrq *cmd, |
3273 | struct ib_udata *udata) | |
f520ba5a | 3274 | { |
f520ba5a | 3275 | struct ib_uverbs_create_srq_resp resp; |
8541f8de | 3276 | struct ib_usrq_object *obj; |
f520ba5a RD |
3277 | struct ib_pd *pd; |
3278 | struct ib_srq *srq; | |
8541f8de | 3279 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
f520ba5a RD |
3280 | struct ib_srq_init_attr attr; |
3281 | int ret; | |
3282 | ||
9ead190b RD |
3283 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
3284 | if (!obj) | |
f520ba5a RD |
3285 | return -ENOMEM; |
3286 | ||
3bea57a5 | 3287 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class); |
8541f8de | 3288 | down_write(&obj->uevent.uobject.mutex); |
f520ba5a | 3289 | |
8541f8de | 3290 | if (cmd->srq_type == IB_SRQT_XRC) { |
8541f8de SH |
3291 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
3292 | if (!attr.ext.xrc.xrcd) { | |
3293 | ret = -EINVAL; | |
5909ce54 | 3294 | goto err; |
8541f8de SH |
3295 | } |
3296 | ||
3297 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); | |
3298 | atomic_inc(&obj->uxrcd->refcnt); | |
5909ce54 RD |
3299 | |
3300 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); | |
3301 | if (!attr.ext.xrc.cq) { | |
3302 | ret = -EINVAL; | |
3303 | goto err_put_xrcd; | |
3304 | } | |
3305 | } | |
3306 | ||
3307 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); | |
3308 | if (!pd) { | |
3309 | ret = -EINVAL; | |
3310 | goto err_put_cq; | |
8541f8de SH |
3311 | } |
3312 | ||
f520ba5a RD |
3313 | attr.event_handler = ib_uverbs_srq_event_handler; |
3314 | attr.srq_context = file; | |
8541f8de SH |
3315 | attr.srq_type = cmd->srq_type; |
3316 | attr.attr.max_wr = cmd->max_wr; | |
3317 | attr.attr.max_sge = cmd->max_sge; | |
3318 | attr.attr.srq_limit = cmd->srq_limit; | |
f520ba5a | 3319 | |
8541f8de SH |
3320 | obj->uevent.events_reported = 0; |
3321 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
f520ba5a | 3322 | |
8541f8de | 3323 | srq = pd->device->create_srq(pd, &attr, udata); |
f520ba5a RD |
3324 | if (IS_ERR(srq)) { |
3325 | ret = PTR_ERR(srq); | |
ec924b47 | 3326 | goto err_put; |
f520ba5a RD |
3327 | } |
3328 | ||
8541f8de SH |
3329 | srq->device = pd->device; |
3330 | srq->pd = pd; | |
3331 | srq->srq_type = cmd->srq_type; | |
3332 | srq->uobject = &obj->uevent.uobject; | |
f520ba5a RD |
3333 | srq->event_handler = attr.event_handler; |
3334 | srq->srq_context = attr.srq_context; | |
8541f8de SH |
3335 | |
3336 | if (cmd->srq_type == IB_SRQT_XRC) { | |
3337 | srq->ext.xrc.cq = attr.ext.xrc.cq; | |
3338 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; | |
3339 | atomic_inc(&attr.ext.xrc.cq->usecnt); | |
3340 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); | |
3341 | } | |
3342 | ||
f520ba5a RD |
3343 | atomic_inc(&pd->usecnt); |
3344 | atomic_set(&srq->usecnt, 0); | |
3345 | ||
8541f8de SH |
3346 | obj->uevent.uobject.object = srq; |
3347 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); | |
f520ba5a RD |
3348 | if (ret) |
3349 | goto err_destroy; | |
3350 | ||
9ead190b | 3351 | memset(&resp, 0, sizeof resp); |
8541f8de | 3352 | resp.srq_handle = obj->uevent.uobject.id; |
ea88fd16 DB |
3353 | resp.max_wr = attr.attr.max_wr; |
3354 | resp.max_sge = attr.attr.max_sge; | |
8541f8de SH |
3355 | if (cmd->srq_type == IB_SRQT_XRC) |
3356 | resp.srqn = srq->ext.xrc.srq_num; | |
f520ba5a | 3357 | |
8541f8de | 3358 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
f520ba5a RD |
3359 | &resp, sizeof resp)) { |
3360 | ret = -EFAULT; | |
9ead190b | 3361 | goto err_copy; |
f520ba5a RD |
3362 | } |
3363 | ||
8541f8de SH |
3364 | if (cmd->srq_type == IB_SRQT_XRC) { |
3365 | put_uobj_read(xrcd_uobj); | |
3366 | put_cq_read(attr.ext.xrc.cq); | |
3367 | } | |
9ead190b RD |
3368 | put_pd_read(pd); |
3369 | ||
95ed644f | 3370 | mutex_lock(&file->mutex); |
8541f8de | 3371 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
95ed644f | 3372 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 3373 | |
8541f8de | 3374 | obj->uevent.uobject.live = 1; |
9ead190b | 3375 | |
8541f8de | 3376 | up_write(&obj->uevent.uobject.mutex); |
f520ba5a | 3377 | |
8541f8de | 3378 | return 0; |
f520ba5a | 3379 | |
9ead190b | 3380 | err_copy: |
8541f8de | 3381 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
f520ba5a RD |
3382 | |
3383 | err_destroy: | |
3384 | ib_destroy_srq(srq); | |
3385 | ||
ec924b47 | 3386 | err_put: |
5909ce54 | 3387 | put_pd_read(pd); |
8541f8de SH |
3388 | |
3389 | err_put_cq: | |
3390 | if (cmd->srq_type == IB_SRQT_XRC) | |
3391 | put_cq_read(attr.ext.xrc.cq); | |
3392 | ||
5909ce54 RD |
3393 | err_put_xrcd: |
3394 | if (cmd->srq_type == IB_SRQT_XRC) { | |
3395 | atomic_dec(&obj->uxrcd->refcnt); | |
3396 | put_uobj_read(xrcd_uobj); | |
3397 | } | |
ec924b47 | 3398 | |
9ead190b | 3399 | err: |
8541f8de | 3400 | put_uobj_write(&obj->uevent.uobject); |
f520ba5a RD |
3401 | return ret; |
3402 | } | |
3403 | ||
8541f8de | 3404 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
057aec0d | 3405 | struct ib_device *ib_dev, |
8541f8de SH |
3406 | const char __user *buf, int in_len, |
3407 | int out_len) | |
3408 | { | |
3409 | struct ib_uverbs_create_srq cmd; | |
3410 | struct ib_uverbs_create_xsrq xcmd; | |
3411 | struct ib_uverbs_create_srq_resp resp; | |
3412 | struct ib_udata udata; | |
3413 | int ret; | |
3414 | ||
3415 | if (out_len < sizeof resp) | |
3416 | return -ENOSPC; | |
3417 | ||
3418 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3419 | return -EFAULT; | |
3420 | ||
3421 | xcmd.response = cmd.response; | |
3422 | xcmd.user_handle = cmd.user_handle; | |
3423 | xcmd.srq_type = IB_SRQT_BASIC; | |
3424 | xcmd.pd_handle = cmd.pd_handle; | |
3425 | xcmd.max_wr = cmd.max_wr; | |
3426 | xcmd.max_sge = cmd.max_sge; | |
3427 | xcmd.srq_limit = cmd.srq_limit; | |
3428 | ||
3429 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3430 | (unsigned long) cmd.response + sizeof resp, | |
3d943c9d MD |
3431 | in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr), |
3432 | out_len - sizeof resp); | |
8541f8de | 3433 | |
057aec0d | 3434 | ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata); |
8541f8de SH |
3435 | if (ret) |
3436 | return ret; | |
3437 | ||
3438 | return in_len; | |
3439 | } | |
3440 | ||
3441 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, | |
057aec0d | 3442 | struct ib_device *ib_dev, |
8541f8de SH |
3443 | const char __user *buf, int in_len, int out_len) |
3444 | { | |
3445 | struct ib_uverbs_create_xsrq cmd; | |
3446 | struct ib_uverbs_create_srq_resp resp; | |
3447 | struct ib_udata udata; | |
3448 | int ret; | |
3449 | ||
3450 | if (out_len < sizeof resp) | |
3451 | return -ENOSPC; | |
3452 | ||
3453 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3454 | return -EFAULT; | |
3455 | ||
3456 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3457 | (unsigned long) cmd.response + sizeof resp, | |
3d943c9d MD |
3458 | in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr), |
3459 | out_len - sizeof resp); | |
8541f8de | 3460 | |
057aec0d | 3461 | ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata); |
8541f8de SH |
3462 | if (ret) |
3463 | return ret; | |
3464 | ||
3465 | return in_len; | |
3466 | } | |
3467 | ||
f520ba5a | 3468 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
057aec0d | 3469 | struct ib_device *ib_dev, |
f520ba5a RD |
3470 | const char __user *buf, int in_len, |
3471 | int out_len) | |
3472 | { | |
3473 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 3474 | struct ib_udata udata; |
f520ba5a RD |
3475 | struct ib_srq *srq; |
3476 | struct ib_srq_attr attr; | |
3477 | int ret; | |
3478 | ||
3479 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3480 | return -EFAULT; | |
3481 | ||
9bc57e2d RC |
3482 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
3483 | out_len); | |
3484 | ||
9ead190b RD |
3485 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3486 | if (!srq) | |
3487 | return -EINVAL; | |
f520ba5a RD |
3488 | |
3489 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
3490 | attr.srq_limit = cmd.srq_limit; |
3491 | ||
9bc57e2d | 3492 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 3493 | |
9ead190b | 3494 | put_srq_read(srq); |
f520ba5a RD |
3495 | |
3496 | return ret ? ret : in_len; | |
3497 | } | |
3498 | ||
8bdb0e86 | 3499 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
057aec0d | 3500 | struct ib_device *ib_dev, |
8bdb0e86 DB |
3501 | const char __user *buf, |
3502 | int in_len, int out_len) | |
3503 | { | |
3504 | struct ib_uverbs_query_srq cmd; | |
3505 | struct ib_uverbs_query_srq_resp resp; | |
3506 | struct ib_srq_attr attr; | |
3507 | struct ib_srq *srq; | |
3508 | int ret; | |
3509 | ||
3510 | if (out_len < sizeof resp) | |
3511 | return -ENOSPC; | |
3512 | ||
3513 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3514 | return -EFAULT; | |
3515 | ||
9ead190b RD |
3516 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3517 | if (!srq) | |
3518 | return -EINVAL; | |
8bdb0e86 | 3519 | |
9ead190b | 3520 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 3521 | |
9ead190b | 3522 | put_srq_read(srq); |
8bdb0e86 DB |
3523 | |
3524 | if (ret) | |
9ead190b | 3525 | return ret; |
8bdb0e86 DB |
3526 | |
3527 | memset(&resp, 0, sizeof resp); | |
3528 | ||
3529 | resp.max_wr = attr.max_wr; | |
3530 | resp.max_sge = attr.max_sge; | |
3531 | resp.srq_limit = attr.srq_limit; | |
3532 | ||
3533 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
3534 | &resp, sizeof resp)) | |
9ead190b | 3535 | return -EFAULT; |
8bdb0e86 | 3536 | |
9ead190b | 3537 | return in_len; |
8bdb0e86 DB |
3538 | } |
3539 | ||
f520ba5a | 3540 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
057aec0d | 3541 | struct ib_device *ib_dev, |
f520ba5a RD |
3542 | const char __user *buf, int in_len, |
3543 | int out_len) | |
3544 | { | |
63aaf647 RD |
3545 | struct ib_uverbs_destroy_srq cmd; |
3546 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 3547 | struct ib_uobject *uobj; |
63aaf647 | 3548 | struct ib_srq *srq; |
9ead190b | 3549 | struct ib_uevent_object *obj; |
63aaf647 | 3550 | int ret = -EINVAL; |
846be90d YH |
3551 | struct ib_usrq_object *us; |
3552 | enum ib_srq_type srq_type; | |
f520ba5a RD |
3553 | |
3554 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3555 | return -EFAULT; | |
3556 | ||
9ead190b RD |
3557 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
3558 | if (!uobj) | |
3559 | return -EINVAL; | |
3560 | srq = uobj->object; | |
3561 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
846be90d | 3562 | srq_type = srq->srq_type; |
63aaf647 | 3563 | |
9ead190b RD |
3564 | ret = ib_destroy_srq(srq); |
3565 | if (!ret) | |
3566 | uobj->live = 0; | |
f520ba5a | 3567 | |
9ead190b | 3568 | put_uobj_write(uobj); |
f520ba5a | 3569 | |
f520ba5a | 3570 | if (ret) |
9ead190b | 3571 | return ret; |
f520ba5a | 3572 | |
846be90d YH |
3573 | if (srq_type == IB_SRQT_XRC) { |
3574 | us = container_of(obj, struct ib_usrq_object, uevent); | |
3575 | atomic_dec(&us->uxrcd->refcnt); | |
3576 | } | |
3577 | ||
9ead190b | 3578 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 3579 | |
95ed644f | 3580 | mutex_lock(&file->mutex); |
9ead190b | 3581 | list_del(&uobj->list); |
95ed644f | 3582 | mutex_unlock(&file->mutex); |
f520ba5a | 3583 | |
9ead190b | 3584 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 3585 | |
9ead190b RD |
3586 | memset(&resp, 0, sizeof resp); |
3587 | resp.events_reported = obj->events_reported; | |
63aaf647 | 3588 | |
9ead190b | 3589 | put_uobj(uobj); |
f520ba5a | 3590 | |
63aaf647 RD |
3591 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
3592 | &resp, sizeof resp)) | |
3593 | ret = -EFAULT; | |
3594 | ||
f520ba5a RD |
3595 | return ret ? ret : in_len; |
3596 | } | |
02d1aa7a EC |
3597 | |
3598 | int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, | |
057aec0d | 3599 | struct ib_device *ib_dev, |
02d1aa7a EC |
3600 | struct ib_udata *ucore, |
3601 | struct ib_udata *uhw) | |
3602 | { | |
2953f425 | 3603 | struct ib_uverbs_ex_query_device_resp resp = { {0} }; |
02d1aa7a | 3604 | struct ib_uverbs_ex_query_device cmd; |
2953f425 | 3605 | struct ib_device_attr attr = {0}; |
02d1aa7a EC |
3606 | int err; |
3607 | ||
02d1aa7a EC |
3608 | if (ucore->inlen < sizeof(cmd)) |
3609 | return -EINVAL; | |
3610 | ||
3611 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); | |
3612 | if (err) | |
3613 | return err; | |
3614 | ||
3615 | if (cmd.comp_mask) | |
3616 | return -EINVAL; | |
3617 | ||
3618 | if (cmd.reserved) | |
3619 | return -EINVAL; | |
3620 | ||
f4056bfd | 3621 | resp.response_length = offsetof(typeof(resp), odp_caps); |
02d1aa7a EC |
3622 | |
3623 | if (ucore->outlen < resp.response_length) | |
3624 | return -ENOSPC; | |
3625 | ||
057aec0d | 3626 | err = ib_dev->query_device(ib_dev, &attr, uhw); |
02d1aa7a EC |
3627 | if (err) |
3628 | return err; | |
3629 | ||
057aec0d | 3630 | copy_query_dev_fields(file, ib_dev, &resp.base, &attr); |
02d1aa7a | 3631 | |
f4056bfd HE |
3632 | if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) |
3633 | goto end; | |
3634 | ||
3635 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING | |
3636 | resp.odp_caps.general_caps = attr.odp_caps.general_caps; | |
3637 | resp.odp_caps.per_transport_caps.rc_odp_caps = | |
3638 | attr.odp_caps.per_transport_caps.rc_odp_caps; | |
3639 | resp.odp_caps.per_transport_caps.uc_odp_caps = | |
3640 | attr.odp_caps.per_transport_caps.uc_odp_caps; | |
3641 | resp.odp_caps.per_transport_caps.ud_odp_caps = | |
3642 | attr.odp_caps.per_transport_caps.ud_odp_caps; | |
f4056bfd HE |
3643 | #endif |
3644 | resp.response_length += sizeof(resp.odp_caps); | |
3645 | ||
24306dc6 MB |
3646 | if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask)) |
3647 | goto end; | |
3648 | ||
3649 | resp.timestamp_mask = attr.timestamp_mask; | |
3650 | resp.response_length += sizeof(resp.timestamp_mask); | |
3651 | ||
3652 | if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock)) | |
3653 | goto end; | |
3654 | ||
3655 | resp.hca_core_clock = attr.hca_core_clock; | |
3656 | resp.response_length += sizeof(resp.hca_core_clock); | |
3657 | ||
f4056bfd | 3658 | end: |
02d1aa7a | 3659 | err = ib_copy_to_udata(ucore, &resp, resp.response_length); |
2953f425 | 3660 | return err; |
02d1aa7a | 3661 | } |