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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
33b9b3ee | 3 | * Copyright (c) 2005, 2006 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. | |
34 | * | |
35 | * $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $ | |
36 | */ | |
37 | ||
6b73597e | 38 | #include <linux/file.h> |
70a30e16 | 39 | #include <linux/fs.h> |
6b73597e | 40 | |
bc38a6ab RD |
41 | #include <asm/uaccess.h> |
42 | ||
43 | #include "uverbs.h" | |
44 | ||
45 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ | |
46 | do { \ | |
47 | (udata)->inbuf = (void __user *) (ibuf); \ | |
48 | (udata)->outbuf = (void __user *) (obuf); \ | |
49 | (udata)->inlen = (ilen); \ | |
50 | (udata)->outlen = (olen); \ | |
51 | } while (0) | |
52 | ||
3463175d RD |
53 | static int idr_add_uobj(struct idr *idr, void *obj, struct ib_uobject *uobj) |
54 | { | |
55 | int ret; | |
56 | ||
57 | retry: | |
58 | if (!idr_pre_get(idr, GFP_KERNEL)) | |
59 | return -ENOMEM; | |
60 | ||
61 | ret = idr_get_new(idr, uobj, &uobj->id); | |
62 | ||
63 | if (ret == -EAGAIN) | |
64 | goto retry; | |
65 | ||
66 | return ret; | |
67 | } | |
68 | ||
bc38a6ab RD |
69 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
70 | const char __user *buf, | |
71 | int in_len, int out_len) | |
72 | { | |
73 | struct ib_uverbs_get_context cmd; | |
74 | struct ib_uverbs_get_context_resp resp; | |
75 | struct ib_udata udata; | |
76 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 77 | struct ib_ucontext *ucontext; |
6b73597e | 78 | struct file *filp; |
63c47c28 | 79 | int ret; |
bc38a6ab RD |
80 | |
81 | if (out_len < sizeof resp) | |
82 | return -ENOSPC; | |
83 | ||
84 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
85 | return -EFAULT; | |
86 | ||
95ed644f | 87 | mutex_lock(&file->mutex); |
63c47c28 RD |
88 | |
89 | if (file->ucontext) { | |
90 | ret = -EINVAL; | |
91 | goto err; | |
92 | } | |
93 | ||
bc38a6ab RD |
94 | INIT_UDATA(&udata, buf + sizeof cmd, |
95 | (unsigned long) cmd.response + sizeof resp, | |
96 | in_len - sizeof cmd, out_len - sizeof resp); | |
97 | ||
63c47c28 | 98 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 GC |
99 | if (IS_ERR(ucontext)) { |
100 | ret = PTR_ERR(file->ucontext); | |
101 | goto err; | |
102 | } | |
bc38a6ab | 103 | |
63c47c28 RD |
104 | ucontext->device = ibdev; |
105 | INIT_LIST_HEAD(&ucontext->pd_list); | |
106 | INIT_LIST_HEAD(&ucontext->mr_list); | |
107 | INIT_LIST_HEAD(&ucontext->mw_list); | |
108 | INIT_LIST_HEAD(&ucontext->cq_list); | |
109 | INIT_LIST_HEAD(&ucontext->qp_list); | |
110 | INIT_LIST_HEAD(&ucontext->srq_list); | |
111 | INIT_LIST_HEAD(&ucontext->ah_list); | |
bc38a6ab | 112 | |
6b73597e RD |
113 | resp.num_comp_vectors = file->device->num_comp_vectors; |
114 | ||
115 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); | |
116 | if (IS_ERR(filp)) { | |
117 | ret = PTR_ERR(filp); | |
118 | goto err_free; | |
119 | } | |
bc38a6ab RD |
120 | |
121 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
122 | &resp, sizeof resp)) { |
123 | ret = -EFAULT; | |
6b73597e | 124 | goto err_file; |
63c47c28 RD |
125 | } |
126 | ||
6b73597e RD |
127 | file->async_file = filp->private_data; |
128 | ||
129 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
130 | ib_uverbs_event_handler); | |
131 | ret = ib_register_event_handler(&file->event_handler); | |
132 | if (ret) | |
133 | goto err_file; | |
134 | ||
135 | kref_get(&file->async_file->ref); | |
136 | kref_get(&file->ref); | |
70a30e16 | 137 | file->ucontext = ucontext; |
6b73597e RD |
138 | |
139 | fd_install(resp.async_fd, filp); | |
140 | ||
95ed644f | 141 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
142 | |
143 | return in_len; | |
144 | ||
6b73597e RD |
145 | err_file: |
146 | put_unused_fd(resp.async_fd); | |
147 | fput(filp); | |
148 | ||
63c47c28 RD |
149 | err_free: |
150 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 151 | |
63c47c28 | 152 | err: |
95ed644f | 153 | mutex_unlock(&file->mutex); |
63c47c28 | 154 | return ret; |
bc38a6ab RD |
155 | } |
156 | ||
157 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
158 | const char __user *buf, | |
159 | int in_len, int out_len) | |
160 | { | |
161 | struct ib_uverbs_query_device cmd; | |
162 | struct ib_uverbs_query_device_resp resp; | |
163 | struct ib_device_attr attr; | |
164 | int ret; | |
165 | ||
166 | if (out_len < sizeof resp) | |
167 | return -ENOSPC; | |
168 | ||
169 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
170 | return -EFAULT; | |
171 | ||
172 | ret = ib_query_device(file->device->ib_dev, &attr); | |
173 | if (ret) | |
174 | return ret; | |
175 | ||
176 | memset(&resp, 0, sizeof resp); | |
177 | ||
178 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 179 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
180 | resp.sys_image_guid = attr.sys_image_guid; |
181 | resp.max_mr_size = attr.max_mr_size; | |
182 | resp.page_size_cap = attr.page_size_cap; | |
183 | resp.vendor_id = attr.vendor_id; | |
184 | resp.vendor_part_id = attr.vendor_part_id; | |
185 | resp.hw_ver = attr.hw_ver; | |
186 | resp.max_qp = attr.max_qp; | |
187 | resp.max_qp_wr = attr.max_qp_wr; | |
188 | resp.device_cap_flags = attr.device_cap_flags; | |
189 | resp.max_sge = attr.max_sge; | |
190 | resp.max_sge_rd = attr.max_sge_rd; | |
191 | resp.max_cq = attr.max_cq; | |
192 | resp.max_cqe = attr.max_cqe; | |
193 | resp.max_mr = attr.max_mr; | |
194 | resp.max_pd = attr.max_pd; | |
195 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
196 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
197 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
198 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
199 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
200 | resp.atomic_cap = attr.atomic_cap; | |
201 | resp.max_ee = attr.max_ee; | |
202 | resp.max_rdd = attr.max_rdd; | |
203 | resp.max_mw = attr.max_mw; | |
204 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
205 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
206 | resp.max_mcast_grp = attr.max_mcast_grp; | |
207 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
208 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
209 | resp.max_ah = attr.max_ah; | |
210 | resp.max_fmr = attr.max_fmr; | |
211 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
212 | resp.max_srq = attr.max_srq; | |
213 | resp.max_srq_wr = attr.max_srq_wr; | |
214 | resp.max_srq_sge = attr.max_srq_sge; | |
215 | resp.max_pkeys = attr.max_pkeys; | |
216 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
217 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
218 | ||
219 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
220 | &resp, sizeof resp)) | |
221 | return -EFAULT; | |
222 | ||
223 | return in_len; | |
224 | } | |
225 | ||
226 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
227 | const char __user *buf, | |
228 | int in_len, int out_len) | |
229 | { | |
230 | struct ib_uverbs_query_port cmd; | |
231 | struct ib_uverbs_query_port_resp resp; | |
232 | struct ib_port_attr attr; | |
233 | int ret; | |
234 | ||
235 | if (out_len < sizeof resp) | |
236 | return -ENOSPC; | |
237 | ||
238 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
239 | return -EFAULT; | |
240 | ||
241 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
242 | if (ret) | |
243 | return ret; | |
244 | ||
245 | memset(&resp, 0, sizeof resp); | |
246 | ||
247 | resp.state = attr.state; | |
248 | resp.max_mtu = attr.max_mtu; | |
249 | resp.active_mtu = attr.active_mtu; | |
250 | resp.gid_tbl_len = attr.gid_tbl_len; | |
251 | resp.port_cap_flags = attr.port_cap_flags; | |
252 | resp.max_msg_sz = attr.max_msg_sz; | |
253 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
254 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
255 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
256 | resp.lid = attr.lid; | |
257 | resp.sm_lid = attr.sm_lid; | |
258 | resp.lmc = attr.lmc; | |
259 | resp.max_vl_num = attr.max_vl_num; | |
260 | resp.sm_sl = attr.sm_sl; | |
261 | resp.subnet_timeout = attr.subnet_timeout; | |
262 | resp.init_type_reply = attr.init_type_reply; | |
263 | resp.active_width = attr.active_width; | |
264 | resp.active_speed = attr.active_speed; | |
265 | resp.phys_state = attr.phys_state; | |
266 | ||
267 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
268 | &resp, sizeof resp)) | |
269 | return -EFAULT; | |
270 | ||
271 | return in_len; | |
272 | } | |
273 | ||
bc38a6ab RD |
274 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
275 | const char __user *buf, | |
276 | int in_len, int out_len) | |
277 | { | |
278 | struct ib_uverbs_alloc_pd cmd; | |
279 | struct ib_uverbs_alloc_pd_resp resp; | |
280 | struct ib_udata udata; | |
281 | struct ib_uobject *uobj; | |
282 | struct ib_pd *pd; | |
283 | int ret; | |
284 | ||
285 | if (out_len < sizeof resp) | |
286 | return -ENOSPC; | |
287 | ||
288 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
289 | return -EFAULT; | |
290 | ||
291 | INIT_UDATA(&udata, buf + sizeof cmd, | |
292 | (unsigned long) cmd.response + sizeof resp, | |
293 | in_len - sizeof cmd, out_len - sizeof resp); | |
294 | ||
295 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
296 | if (!uobj) | |
297 | return -ENOMEM; | |
298 | ||
299 | uobj->context = file->ucontext; | |
300 | ||
301 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
302 | file->ucontext, &udata); | |
303 | if (IS_ERR(pd)) { | |
304 | ret = PTR_ERR(pd); | |
305 | goto err; | |
306 | } | |
307 | ||
308 | pd->device = file->device->ib_dev; | |
309 | pd->uobject = uobj; | |
310 | atomic_set(&pd->usecnt, 0); | |
311 | ||
95ed644f | 312 | mutex_lock(&ib_uverbs_idr_mutex); |
eb9d3cd5 | 313 | |
3463175d | 314 | ret = idr_add_uobj(&ib_uverbs_pd_idr, pd, uobj); |
bc38a6ab | 315 | if (ret) |
eb9d3cd5 | 316 | goto err_up; |
bc38a6ab RD |
317 | |
318 | memset(&resp, 0, sizeof resp); | |
319 | resp.pd_handle = uobj->id; | |
320 | ||
321 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
322 | &resp, sizeof resp)) { | |
323 | ret = -EFAULT; | |
eb9d3cd5 | 324 | goto err_idr; |
bc38a6ab RD |
325 | } |
326 | ||
95ed644f | 327 | mutex_lock(&file->mutex); |
eb9d3cd5 | 328 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 329 | mutex_unlock(&file->mutex); |
bc38a6ab | 330 | |
95ed644f | 331 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab | 332 | |
eb9d3cd5 RD |
333 | return in_len; |
334 | ||
335 | err_idr: | |
336 | idr_remove(&ib_uverbs_pd_idr, uobj->id); | |
337 | ||
338 | err_up: | |
95ed644f | 339 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
340 | ib_dealloc_pd(pd); |
341 | ||
342 | err: | |
343 | kfree(uobj); | |
344 | return ret; | |
345 | } | |
346 | ||
347 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
348 | const char __user *buf, | |
349 | int in_len, int out_len) | |
350 | { | |
351 | struct ib_uverbs_dealloc_pd cmd; | |
352 | struct ib_pd *pd; | |
353 | struct ib_uobject *uobj; | |
354 | int ret = -EINVAL; | |
355 | ||
356 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
357 | return -EFAULT; | |
358 | ||
95ed644f | 359 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
360 | |
361 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
362 | if (!pd || pd->uobject->context != file->ucontext) | |
363 | goto out; | |
364 | ||
365 | uobj = pd->uobject; | |
366 | ||
367 | ret = ib_dealloc_pd(pd); | |
368 | if (ret) | |
369 | goto out; | |
370 | ||
371 | idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle); | |
372 | ||
95ed644f | 373 | mutex_lock(&file->mutex); |
bc38a6ab | 374 | list_del(&uobj->list); |
95ed644f | 375 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
376 | |
377 | kfree(uobj); | |
378 | ||
379 | out: | |
95ed644f | 380 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
381 | |
382 | return ret ? ret : in_len; | |
383 | } | |
384 | ||
385 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
386 | const char __user *buf, int in_len, | |
387 | int out_len) | |
388 | { | |
389 | struct ib_uverbs_reg_mr cmd; | |
390 | struct ib_uverbs_reg_mr_resp resp; | |
391 | struct ib_udata udata; | |
392 | struct ib_umem_object *obj; | |
393 | struct ib_pd *pd; | |
394 | struct ib_mr *mr; | |
395 | int ret; | |
396 | ||
397 | if (out_len < sizeof resp) | |
398 | return -ENOSPC; | |
399 | ||
400 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
401 | return -EFAULT; | |
402 | ||
403 | INIT_UDATA(&udata, buf + sizeof cmd, | |
404 | (unsigned long) cmd.response + sizeof resp, | |
405 | in_len - sizeof cmd, out_len - sizeof resp); | |
406 | ||
407 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
408 | return -EINVAL; | |
409 | ||
f575394f RD |
410 | /* |
411 | * Local write permission is required if remote write or | |
412 | * remote atomic permission is also requested. | |
413 | */ | |
414 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
415 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
416 | return -EINVAL; | |
417 | ||
bc38a6ab RD |
418 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
419 | if (!obj) | |
420 | return -ENOMEM; | |
421 | ||
422 | obj->uobject.context = file->ucontext; | |
423 | ||
424 | /* | |
425 | * We ask for writable memory if any access flags other than | |
426 | * "remote read" are set. "Local write" and "remote write" | |
427 | * obviously require write access. "Remote atomic" can do | |
428 | * things like fetch and add, which will modify memory, and | |
429 | * "MW bind" can change permissions by binding a window. | |
430 | */ | |
431 | ret = ib_umem_get(file->device->ib_dev, &obj->umem, | |
432 | (void *) (unsigned long) cmd.start, cmd.length, | |
433 | !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); | |
434 | if (ret) | |
435 | goto err_free; | |
436 | ||
437 | obj->umem.virt_base = cmd.hca_va; | |
438 | ||
95ed644f | 439 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
440 | |
441 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
442 | if (!pd || pd->uobject->context != file->ucontext) { | |
443 | ret = -EINVAL; | |
444 | goto err_up; | |
445 | } | |
446 | ||
447 | if (!pd->device->reg_user_mr) { | |
448 | ret = -ENOSYS; | |
449 | goto err_up; | |
450 | } | |
451 | ||
452 | mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); | |
453 | if (IS_ERR(mr)) { | |
454 | ret = PTR_ERR(mr); | |
455 | goto err_up; | |
456 | } | |
457 | ||
458 | mr->device = pd->device; | |
459 | mr->pd = pd; | |
460 | mr->uobject = &obj->uobject; | |
461 | atomic_inc(&pd->usecnt); | |
462 | atomic_set(&mr->usecnt, 0); | |
463 | ||
464 | memset(&resp, 0, sizeof resp); | |
465 | resp.lkey = mr->lkey; | |
466 | resp.rkey = mr->rkey; | |
467 | ||
3463175d | 468 | ret = idr_add_uobj(&ib_uverbs_mr_idr, mr, &obj->uobject); |
bc38a6ab RD |
469 | if (ret) |
470 | goto err_unreg; | |
471 | ||
472 | resp.mr_handle = obj->uobject.id; | |
473 | ||
bc38a6ab RD |
474 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
475 | &resp, sizeof resp)) { | |
476 | ret = -EFAULT; | |
eb9d3cd5 | 477 | goto err_idr; |
bc38a6ab RD |
478 | } |
479 | ||
95ed644f | 480 | mutex_lock(&file->mutex); |
eb9d3cd5 | 481 | list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
95ed644f | 482 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 483 | |
95ed644f | 484 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
485 | |
486 | return in_len; | |
487 | ||
eb9d3cd5 RD |
488 | err_idr: |
489 | idr_remove(&ib_uverbs_mr_idr, obj->uobject.id); | |
bc38a6ab RD |
490 | |
491 | err_unreg: | |
492 | ib_dereg_mr(mr); | |
493 | ||
494 | err_up: | |
95ed644f | 495 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
496 | |
497 | ib_umem_release(file->device->ib_dev, &obj->umem); | |
498 | ||
499 | err_free: | |
500 | kfree(obj); | |
501 | return ret; | |
502 | } | |
503 | ||
504 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
505 | const char __user *buf, int in_len, | |
506 | int out_len) | |
507 | { | |
508 | struct ib_uverbs_dereg_mr cmd; | |
509 | struct ib_mr *mr; | |
510 | struct ib_umem_object *memobj; | |
511 | int ret = -EINVAL; | |
512 | ||
513 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
514 | return -EFAULT; | |
515 | ||
95ed644f | 516 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
517 | |
518 | mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle); | |
519 | if (!mr || mr->uobject->context != file->ucontext) | |
520 | goto out; | |
521 | ||
522 | memobj = container_of(mr->uobject, struct ib_umem_object, uobject); | |
523 | ||
524 | ret = ib_dereg_mr(mr); | |
525 | if (ret) | |
526 | goto out; | |
527 | ||
528 | idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle); | |
529 | ||
95ed644f | 530 | mutex_lock(&file->mutex); |
bc38a6ab | 531 | list_del(&memobj->uobject.list); |
95ed644f | 532 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
533 | |
534 | ib_umem_release(file->device->ib_dev, &memobj->umem); | |
535 | kfree(memobj); | |
536 | ||
537 | out: | |
95ed644f | 538 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
539 | |
540 | return ret ? ret : in_len; | |
541 | } | |
542 | ||
6b73597e RD |
543 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
544 | const char __user *buf, int in_len, | |
545 | int out_len) | |
546 | { | |
547 | struct ib_uverbs_create_comp_channel cmd; | |
548 | struct ib_uverbs_create_comp_channel_resp resp; | |
549 | struct file *filp; | |
550 | ||
551 | if (out_len < sizeof resp) | |
552 | return -ENOSPC; | |
553 | ||
554 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
555 | return -EFAULT; | |
556 | ||
557 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); | |
558 | if (IS_ERR(filp)) | |
559 | return PTR_ERR(filp); | |
560 | ||
561 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
562 | &resp, sizeof resp)) { | |
563 | put_unused_fd(resp.fd); | |
564 | fput(filp); | |
565 | return -EFAULT; | |
566 | } | |
567 | ||
568 | fd_install(resp.fd, filp); | |
569 | return in_len; | |
570 | } | |
571 | ||
bc38a6ab RD |
572 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
573 | const char __user *buf, int in_len, | |
574 | int out_len) | |
575 | { | |
576 | struct ib_uverbs_create_cq cmd; | |
577 | struct ib_uverbs_create_cq_resp resp; | |
578 | struct ib_udata udata; | |
63aaf647 | 579 | struct ib_ucq_object *uobj; |
6b73597e | 580 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
581 | struct ib_cq *cq; |
582 | int ret; | |
583 | ||
584 | if (out_len < sizeof resp) | |
585 | return -ENOSPC; | |
586 | ||
587 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
588 | return -EFAULT; | |
589 | ||
590 | INIT_UDATA(&udata, buf + sizeof cmd, | |
591 | (unsigned long) cmd.response + sizeof resp, | |
592 | in_len - sizeof cmd, out_len - sizeof resp); | |
593 | ||
6b73597e | 594 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
595 | return -EINVAL; |
596 | ||
597 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
598 | if (!uobj) | |
599 | return -ENOMEM; | |
600 | ||
ac4e7b35 JM |
601 | if (cmd.comp_channel >= 0) { |
602 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
603 | if (!ev_file) { | |
604 | ret = -EINVAL; | |
605 | goto err; | |
606 | } | |
607 | } | |
608 | ||
63aaf647 RD |
609 | uobj->uobject.user_handle = cmd.user_handle; |
610 | uobj->uobject.context = file->ucontext; | |
7162a3e0 | 611 | uobj->uverbs_file = file; |
63aaf647 RD |
612 | uobj->comp_events_reported = 0; |
613 | uobj->async_events_reported = 0; | |
614 | INIT_LIST_HEAD(&uobj->comp_list); | |
615 | INIT_LIST_HEAD(&uobj->async_list); | |
bc38a6ab RD |
616 | |
617 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
618 | file->ucontext, &udata); | |
619 | if (IS_ERR(cq)) { | |
620 | ret = PTR_ERR(cq); | |
621 | goto err; | |
622 | } | |
623 | ||
624 | cq->device = file->device->ib_dev; | |
63aaf647 | 625 | cq->uobject = &uobj->uobject; |
bc38a6ab RD |
626 | cq->comp_handler = ib_uverbs_comp_handler; |
627 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 628 | cq->cq_context = ev_file; |
bc38a6ab RD |
629 | atomic_set(&cq->usecnt, 0); |
630 | ||
95ed644f | 631 | mutex_lock(&ib_uverbs_idr_mutex); |
eb9d3cd5 | 632 | |
3463175d | 633 | ret = idr_add_uobj(&ib_uverbs_cq_idr, cq, &uobj->uobject); |
bc38a6ab | 634 | if (ret) |
eb9d3cd5 | 635 | goto err_up; |
bc38a6ab RD |
636 | |
637 | memset(&resp, 0, sizeof resp); | |
63aaf647 | 638 | resp.cq_handle = uobj->uobject.id; |
bc38a6ab RD |
639 | resp.cqe = cq->cqe; |
640 | ||
641 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
642 | &resp, sizeof resp)) { | |
643 | ret = -EFAULT; | |
eb9d3cd5 | 644 | goto err_idr; |
bc38a6ab RD |
645 | } |
646 | ||
95ed644f | 647 | mutex_lock(&file->mutex); |
eb9d3cd5 | 648 | list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 649 | mutex_unlock(&file->mutex); |
bc38a6ab | 650 | |
95ed644f | 651 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab | 652 | |
eb9d3cd5 RD |
653 | return in_len; |
654 | ||
655 | err_idr: | |
656 | idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id); | |
657 | ||
658 | err_up: | |
95ed644f | 659 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
660 | ib_destroy_cq(cq); |
661 | ||
662 | err: | |
ac4e7b35 JM |
663 | if (ev_file) |
664 | ib_uverbs_release_ucq(file, ev_file, uobj); | |
bc38a6ab RD |
665 | kfree(uobj); |
666 | return ret; | |
667 | } | |
668 | ||
33b9b3ee RD |
669 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
670 | const char __user *buf, int in_len, | |
671 | int out_len) | |
672 | { | |
673 | struct ib_uverbs_resize_cq cmd; | |
674 | struct ib_uverbs_resize_cq_resp resp; | |
675 | struct ib_udata udata; | |
676 | struct ib_cq *cq; | |
677 | int ret = -EINVAL; | |
678 | ||
679 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
680 | return -EFAULT; | |
681 | ||
682 | INIT_UDATA(&udata, buf + sizeof cmd, | |
683 | (unsigned long) cmd.response + sizeof resp, | |
684 | in_len - sizeof cmd, out_len - sizeof resp); | |
685 | ||
686 | mutex_lock(&ib_uverbs_idr_mutex); | |
687 | ||
688 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); | |
689 | if (!cq || cq->uobject->context != file->ucontext || !cq->device->resize_cq) | |
690 | goto out; | |
691 | ||
692 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
693 | if (ret) | |
694 | goto out; | |
695 | ||
696 | memset(&resp, 0, sizeof resp); | |
697 | resp.cqe = cq->cqe; | |
698 | ||
699 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
700 | &resp, sizeof resp)) | |
701 | ret = -EFAULT; | |
702 | ||
703 | out: | |
704 | mutex_unlock(&ib_uverbs_idr_mutex); | |
705 | ||
706 | return ret ? ret : in_len; | |
707 | } | |
708 | ||
67cdb40c RD |
709 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
710 | const char __user *buf, int in_len, | |
711 | int out_len) | |
712 | { | |
713 | struct ib_uverbs_poll_cq cmd; | |
714 | struct ib_uverbs_poll_cq_resp *resp; | |
715 | struct ib_cq *cq; | |
716 | struct ib_wc *wc; | |
717 | int ret = 0; | |
718 | int i; | |
719 | int rsize; | |
720 | ||
721 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
722 | return -EFAULT; | |
723 | ||
724 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); | |
725 | if (!wc) | |
726 | return -ENOMEM; | |
727 | ||
728 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); | |
729 | resp = kmalloc(rsize, GFP_KERNEL); | |
730 | if (!resp) { | |
731 | ret = -ENOMEM; | |
732 | goto out_wc; | |
733 | } | |
734 | ||
95ed644f | 735 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
736 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
737 | if (!cq || cq->uobject->context != file->ucontext) { | |
738 | ret = -EINVAL; | |
739 | goto out; | |
740 | } | |
741 | ||
742 | resp->count = ib_poll_cq(cq, cmd.ne, wc); | |
743 | ||
744 | for (i = 0; i < resp->count; i++) { | |
745 | resp->wc[i].wr_id = wc[i].wr_id; | |
746 | resp->wc[i].status = wc[i].status; | |
747 | resp->wc[i].opcode = wc[i].opcode; | |
748 | resp->wc[i].vendor_err = wc[i].vendor_err; | |
749 | resp->wc[i].byte_len = wc[i].byte_len; | |
77369ed3 | 750 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
67cdb40c RD |
751 | resp->wc[i].qp_num = wc[i].qp_num; |
752 | resp->wc[i].src_qp = wc[i].src_qp; | |
753 | resp->wc[i].wc_flags = wc[i].wc_flags; | |
754 | resp->wc[i].pkey_index = wc[i].pkey_index; | |
755 | resp->wc[i].slid = wc[i].slid; | |
756 | resp->wc[i].sl = wc[i].sl; | |
757 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; | |
758 | resp->wc[i].port_num = wc[i].port_num; | |
759 | } | |
760 | ||
761 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) | |
762 | ret = -EFAULT; | |
763 | ||
764 | out: | |
95ed644f | 765 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
766 | kfree(resp); |
767 | ||
768 | out_wc: | |
769 | kfree(wc); | |
770 | return ret ? ret : in_len; | |
771 | } | |
772 | ||
773 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
774 | const char __user *buf, int in_len, | |
775 | int out_len) | |
776 | { | |
777 | struct ib_uverbs_req_notify_cq cmd; | |
778 | struct ib_cq *cq; | |
779 | int ret = -EINVAL; | |
780 | ||
781 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
782 | return -EFAULT; | |
783 | ||
95ed644f | 784 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
785 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
786 | if (cq && cq->uobject->context == file->ucontext) { | |
787 | ib_req_notify_cq(cq, cmd.solicited_only ? | |
788 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
789 | ret = in_len; | |
790 | } | |
95ed644f | 791 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
792 | |
793 | return ret; | |
794 | } | |
795 | ||
bc38a6ab RD |
796 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
797 | const char __user *buf, int in_len, | |
798 | int out_len) | |
799 | { | |
63aaf647 RD |
800 | struct ib_uverbs_destroy_cq cmd; |
801 | struct ib_uverbs_destroy_cq_resp resp; | |
802 | struct ib_cq *cq; | |
803 | struct ib_ucq_object *uobj; | |
6b73597e | 804 | struct ib_uverbs_event_file *ev_file; |
63aaf647 RD |
805 | u64 user_handle; |
806 | int ret = -EINVAL; | |
bc38a6ab RD |
807 | |
808 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
809 | return -EFAULT; | |
810 | ||
63aaf647 RD |
811 | memset(&resp, 0, sizeof resp); |
812 | ||
95ed644f | 813 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
814 | |
815 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); | |
816 | if (!cq || cq->uobject->context != file->ucontext) | |
817 | goto out; | |
818 | ||
63aaf647 | 819 | user_handle = cq->uobject->user_handle; |
6b73597e RD |
820 | uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
821 | ev_file = cq->cq_context; | |
bc38a6ab RD |
822 | |
823 | ret = ib_destroy_cq(cq); | |
824 | if (ret) | |
825 | goto out; | |
826 | ||
827 | idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle); | |
828 | ||
95ed644f | 829 | mutex_lock(&file->mutex); |
63aaf647 | 830 | list_del(&uobj->uobject.list); |
95ed644f | 831 | mutex_unlock(&file->mutex); |
bc38a6ab | 832 | |
70a30e16 | 833 | ib_uverbs_release_ucq(file, ev_file, uobj); |
63aaf647 RD |
834 | |
835 | resp.comp_events_reported = uobj->comp_events_reported; | |
836 | resp.async_events_reported = uobj->async_events_reported; | |
837 | ||
bc38a6ab RD |
838 | kfree(uobj); |
839 | ||
63aaf647 RD |
840 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
841 | &resp, sizeof resp)) | |
842 | ret = -EFAULT; | |
843 | ||
bc38a6ab | 844 | out: |
95ed644f | 845 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
846 | |
847 | return ret ? ret : in_len; | |
848 | } | |
849 | ||
850 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
851 | const char __user *buf, int in_len, | |
852 | int out_len) | |
853 | { | |
854 | struct ib_uverbs_create_qp cmd; | |
855 | struct ib_uverbs_create_qp_resp resp; | |
856 | struct ib_udata udata; | |
f4e40156 | 857 | struct ib_uqp_object *uobj; |
bc38a6ab RD |
858 | struct ib_pd *pd; |
859 | struct ib_cq *scq, *rcq; | |
f520ba5a | 860 | struct ib_srq *srq; |
bc38a6ab RD |
861 | struct ib_qp *qp; |
862 | struct ib_qp_init_attr attr; | |
863 | int ret; | |
864 | ||
865 | if (out_len < sizeof resp) | |
866 | return -ENOSPC; | |
867 | ||
868 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
869 | return -EFAULT; | |
870 | ||
871 | INIT_UDATA(&udata, buf + sizeof cmd, | |
872 | (unsigned long) cmd.response + sizeof resp, | |
873 | in_len - sizeof cmd, out_len - sizeof resp); | |
874 | ||
875 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
876 | if (!uobj) | |
877 | return -ENOMEM; | |
878 | ||
95ed644f | 879 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
880 | |
881 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
882 | scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle); | |
883 | rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle); | |
f520ba5a | 884 | srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL; |
bc38a6ab RD |
885 | |
886 | if (!pd || pd->uobject->context != file->ucontext || | |
887 | !scq || scq->uobject->context != file->ucontext || | |
f520ba5a RD |
888 | !rcq || rcq->uobject->context != file->ucontext || |
889 | (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) { | |
bc38a6ab RD |
890 | ret = -EINVAL; |
891 | goto err_up; | |
892 | } | |
893 | ||
894 | attr.event_handler = ib_uverbs_qp_event_handler; | |
895 | attr.qp_context = file; | |
896 | attr.send_cq = scq; | |
897 | attr.recv_cq = rcq; | |
f520ba5a | 898 | attr.srq = srq; |
bc38a6ab RD |
899 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
900 | attr.qp_type = cmd.qp_type; | |
901 | ||
902 | attr.cap.max_send_wr = cmd.max_send_wr; | |
903 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
904 | attr.cap.max_send_sge = cmd.max_send_sge; | |
905 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
906 | attr.cap.max_inline_data = cmd.max_inline_data; | |
907 | ||
f4e40156 JM |
908 | uobj->uevent.uobject.user_handle = cmd.user_handle; |
909 | uobj->uevent.uobject.context = file->ucontext; | |
910 | uobj->uevent.events_reported = 0; | |
911 | INIT_LIST_HEAD(&uobj->uevent.event_list); | |
912 | INIT_LIST_HEAD(&uobj->mcast_list); | |
bc38a6ab RD |
913 | |
914 | qp = pd->device->create_qp(pd, &attr, &udata); | |
915 | if (IS_ERR(qp)) { | |
916 | ret = PTR_ERR(qp); | |
917 | goto err_up; | |
918 | } | |
919 | ||
920 | qp->device = pd->device; | |
921 | qp->pd = pd; | |
922 | qp->send_cq = attr.send_cq; | |
923 | qp->recv_cq = attr.recv_cq; | |
924 | qp->srq = attr.srq; | |
f4e40156 | 925 | qp->uobject = &uobj->uevent.uobject; |
bc38a6ab RD |
926 | qp->event_handler = attr.event_handler; |
927 | qp->qp_context = attr.qp_context; | |
928 | qp->qp_type = attr.qp_type; | |
929 | atomic_inc(&pd->usecnt); | |
930 | atomic_inc(&attr.send_cq->usecnt); | |
931 | atomic_inc(&attr.recv_cq->usecnt); | |
932 | if (attr.srq) | |
933 | atomic_inc(&attr.srq->usecnt); | |
934 | ||
935 | memset(&resp, 0, sizeof resp); | |
936 | resp.qpn = qp->qp_num; | |
937 | ||
3463175d | 938 | ret = idr_add_uobj(&ib_uverbs_qp_idr, qp, &uobj->uevent.uobject); |
bc38a6ab RD |
939 | if (ret) |
940 | goto err_destroy; | |
941 | ||
f4e40156 | 942 | resp.qp_handle = uobj->uevent.uobject.id; |
77369ed3 JM |
943 | resp.max_recv_sge = attr.cap.max_recv_sge; |
944 | resp.max_send_sge = attr.cap.max_send_sge; | |
945 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
946 | resp.max_send_wr = attr.cap.max_send_wr; | |
947 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 948 | |
bc38a6ab RD |
949 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
950 | &resp, sizeof resp)) { | |
951 | ret = -EFAULT; | |
eb9d3cd5 | 952 | goto err_idr; |
bc38a6ab RD |
953 | } |
954 | ||
95ed644f | 955 | mutex_lock(&file->mutex); |
f4e40156 | 956 | list_add_tail(&uobj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 957 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 958 | |
95ed644f | 959 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
960 | |
961 | return in_len; | |
962 | ||
eb9d3cd5 | 963 | err_idr: |
f4e40156 | 964 | idr_remove(&ib_uverbs_qp_idr, uobj->uevent.uobject.id); |
bc38a6ab RD |
965 | |
966 | err_destroy: | |
967 | ib_destroy_qp(qp); | |
968 | ||
969 | err_up: | |
95ed644f | 970 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
971 | |
972 | kfree(uobj); | |
973 | return ret; | |
974 | } | |
975 | ||
7ccc9a24 DB |
976 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
977 | const char __user *buf, int in_len, | |
978 | int out_len) | |
979 | { | |
980 | struct ib_uverbs_query_qp cmd; | |
981 | struct ib_uverbs_query_qp_resp resp; | |
982 | struct ib_qp *qp; | |
983 | struct ib_qp_attr *attr; | |
984 | struct ib_qp_init_attr *init_attr; | |
985 | int ret; | |
986 | ||
987 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
988 | return -EFAULT; | |
989 | ||
990 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
991 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
992 | if (!attr || !init_attr) { | |
993 | ret = -ENOMEM; | |
994 | goto out; | |
995 | } | |
996 | ||
997 | mutex_lock(&ib_uverbs_idr_mutex); | |
998 | ||
999 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1000 | if (qp && qp->uobject->context == file->ucontext) | |
1001 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
1002 | else | |
1003 | ret = -EINVAL; | |
1004 | ||
1005 | mutex_unlock(&ib_uverbs_idr_mutex); | |
1006 | ||
1007 | if (ret) | |
1008 | goto out; | |
1009 | ||
1010 | memset(&resp, 0, sizeof resp); | |
1011 | ||
1012 | resp.qp_state = attr->qp_state; | |
1013 | resp.cur_qp_state = attr->cur_qp_state; | |
1014 | resp.path_mtu = attr->path_mtu; | |
1015 | resp.path_mig_state = attr->path_mig_state; | |
1016 | resp.qkey = attr->qkey; | |
1017 | resp.rq_psn = attr->rq_psn; | |
1018 | resp.sq_psn = attr->sq_psn; | |
1019 | resp.dest_qp_num = attr->dest_qp_num; | |
1020 | resp.qp_access_flags = attr->qp_access_flags; | |
1021 | resp.pkey_index = attr->pkey_index; | |
1022 | resp.alt_pkey_index = attr->alt_pkey_index; | |
1023 | resp.en_sqd_async_notify = attr->en_sqd_async_notify; | |
1024 | resp.max_rd_atomic = attr->max_rd_atomic; | |
1025 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1026 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1027 | resp.port_num = attr->port_num; | |
1028 | resp.timeout = attr->timeout; | |
1029 | resp.retry_cnt = attr->retry_cnt; | |
1030 | resp.rnr_retry = attr->rnr_retry; | |
1031 | resp.alt_port_num = attr->alt_port_num; | |
1032 | resp.alt_timeout = attr->alt_timeout; | |
1033 | ||
1034 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1035 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1036 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1037 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1038 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1039 | resp.dest.dlid = attr->ah_attr.dlid; | |
1040 | resp.dest.sl = attr->ah_attr.sl; | |
1041 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1042 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1043 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1044 | resp.dest.port_num = attr->ah_attr.port_num; | |
1045 | ||
1046 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1047 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1048 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1049 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1050 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1051 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1052 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1053 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1054 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1055 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1056 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1057 | ||
1058 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1059 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1060 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1061 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1062 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1063 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1064 | |
1065 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1066 | &resp, sizeof resp)) | |
1067 | ret = -EFAULT; | |
1068 | ||
1069 | out: | |
1070 | kfree(attr); | |
1071 | kfree(init_attr); | |
1072 | ||
1073 | return ret ? ret : in_len; | |
1074 | } | |
1075 | ||
bc38a6ab RD |
1076 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1077 | const char __user *buf, int in_len, | |
1078 | int out_len) | |
1079 | { | |
1080 | struct ib_uverbs_modify_qp cmd; | |
1081 | struct ib_qp *qp; | |
1082 | struct ib_qp_attr *attr; | |
1083 | int ret; | |
1084 | ||
1085 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1086 | return -EFAULT; | |
1087 | ||
1088 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1089 | if (!attr) | |
1090 | return -ENOMEM; | |
1091 | ||
95ed644f | 1092 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1093 | |
1094 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1095 | if (!qp || qp->uobject->context != file->ucontext) { | |
1096 | ret = -EINVAL; | |
1097 | goto out; | |
1098 | } | |
1099 | ||
1100 | attr->qp_state = cmd.qp_state; | |
1101 | attr->cur_qp_state = cmd.cur_qp_state; | |
1102 | attr->path_mtu = cmd.path_mtu; | |
1103 | attr->path_mig_state = cmd.path_mig_state; | |
1104 | attr->qkey = cmd.qkey; | |
1105 | attr->rq_psn = cmd.rq_psn; | |
1106 | attr->sq_psn = cmd.sq_psn; | |
1107 | attr->dest_qp_num = cmd.dest_qp_num; | |
1108 | attr->qp_access_flags = cmd.qp_access_flags; | |
1109 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1110 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1111 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1112 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1113 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1114 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1115 | attr->port_num = cmd.port_num; | |
1116 | attr->timeout = cmd.timeout; | |
1117 | attr->retry_cnt = cmd.retry_cnt; | |
1118 | attr->rnr_retry = cmd.rnr_retry; | |
1119 | attr->alt_port_num = cmd.alt_port_num; | |
1120 | attr->alt_timeout = cmd.alt_timeout; | |
1121 | ||
1122 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1123 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1124 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1125 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1126 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1127 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1128 | attr->ah_attr.sl = cmd.dest.sl; | |
1129 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1130 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1131 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1132 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1133 | ||
1134 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1135 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1136 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1137 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1138 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1139 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1140 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1141 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1142 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1143 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1144 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1145 | ||
1146 | ret = ib_modify_qp(qp, attr, cmd.attr_mask); | |
1147 | if (ret) | |
1148 | goto out; | |
1149 | ||
1150 | ret = in_len; | |
1151 | ||
1152 | out: | |
95ed644f | 1153 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1154 | kfree(attr); |
1155 | ||
1156 | return ret; | |
1157 | } | |
1158 | ||
1159 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1160 | const char __user *buf, int in_len, | |
1161 | int out_len) | |
1162 | { | |
63aaf647 RD |
1163 | struct ib_uverbs_destroy_qp cmd; |
1164 | struct ib_uverbs_destroy_qp_resp resp; | |
1165 | struct ib_qp *qp; | |
f4e40156 | 1166 | struct ib_uqp_object *uobj; |
63aaf647 | 1167 | int ret = -EINVAL; |
bc38a6ab RD |
1168 | |
1169 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1170 | return -EFAULT; | |
1171 | ||
63aaf647 RD |
1172 | memset(&resp, 0, sizeof resp); |
1173 | ||
95ed644f | 1174 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1175 | |
1176 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1177 | if (!qp || qp->uobject->context != file->ucontext) | |
1178 | goto out; | |
1179 | ||
f4e40156 JM |
1180 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
1181 | ||
1182 | if (!list_empty(&uobj->mcast_list)) { | |
1183 | ret = -EBUSY; | |
1184 | goto out; | |
1185 | } | |
bc38a6ab RD |
1186 | |
1187 | ret = ib_destroy_qp(qp); | |
1188 | if (ret) | |
1189 | goto out; | |
1190 | ||
1191 | idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1192 | ||
95ed644f | 1193 | mutex_lock(&file->mutex); |
f4e40156 | 1194 | list_del(&uobj->uevent.uobject.list); |
95ed644f | 1195 | mutex_unlock(&file->mutex); |
bc38a6ab | 1196 | |
f4e40156 | 1197 | ib_uverbs_release_uevent(file, &uobj->uevent); |
63aaf647 | 1198 | |
f4e40156 | 1199 | resp.events_reported = uobj->uevent.events_reported; |
63aaf647 | 1200 | |
bc38a6ab RD |
1201 | kfree(uobj); |
1202 | ||
63aaf647 RD |
1203 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1204 | &resp, sizeof resp)) | |
1205 | ret = -EFAULT; | |
1206 | ||
bc38a6ab | 1207 | out: |
95ed644f | 1208 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1209 | |
1210 | return ret ? ret : in_len; | |
1211 | } | |
1212 | ||
67cdb40c | 1213 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1214 | const char __user *buf, int in_len, |
1215 | int out_len) | |
67cdb40c RD |
1216 | { |
1217 | struct ib_uverbs_post_send cmd; | |
1218 | struct ib_uverbs_post_send_resp resp; | |
1219 | struct ib_uverbs_send_wr *user_wr; | |
1220 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1221 | struct ib_qp *qp; | |
1222 | int i, sg_ind; | |
1223 | ssize_t ret = -EINVAL; | |
1224 | ||
1225 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1226 | return -EFAULT; | |
1227 | ||
1228 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1229 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1230 | return -EINVAL; | |
1231 | ||
1232 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1233 | return -EINVAL; | |
1234 | ||
1235 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1236 | if (!user_wr) | |
1237 | return -ENOMEM; | |
1238 | ||
95ed644f | 1239 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1240 | |
1241 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1242 | if (!qp || qp->uobject->context != file->ucontext) | |
1243 | goto out; | |
1244 | ||
1245 | sg_ind = 0; | |
1246 | last = NULL; | |
1247 | for (i = 0; i < cmd.wr_count; ++i) { | |
1248 | if (copy_from_user(user_wr, | |
1249 | buf + sizeof cmd + i * cmd.wqe_size, | |
1250 | cmd.wqe_size)) { | |
1251 | ret = -EFAULT; | |
1252 | goto out; | |
1253 | } | |
1254 | ||
1255 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1256 | ret = -EINVAL; | |
1257 | goto out; | |
1258 | } | |
1259 | ||
1260 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1261 | user_wr->num_sge * sizeof (struct ib_sge), | |
1262 | GFP_KERNEL); | |
1263 | if (!next) { | |
1264 | ret = -ENOMEM; | |
1265 | goto out; | |
1266 | } | |
1267 | ||
1268 | if (!last) | |
1269 | wr = next; | |
1270 | else | |
1271 | last->next = next; | |
1272 | last = next; | |
1273 | ||
1274 | next->next = NULL; | |
1275 | next->wr_id = user_wr->wr_id; | |
1276 | next->num_sge = user_wr->num_sge; | |
1277 | next->opcode = user_wr->opcode; | |
1278 | next->send_flags = user_wr->send_flags; | |
77369ed3 | 1279 | next->imm_data = (__be32 __force) user_wr->imm_data; |
67cdb40c RD |
1280 | |
1281 | if (qp->qp_type == IB_QPT_UD) { | |
1282 | next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr, | |
1283 | user_wr->wr.ud.ah); | |
1284 | if (!next->wr.ud.ah) { | |
1285 | ret = -EINVAL; | |
1286 | goto out; | |
1287 | } | |
1288 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1289 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1290 | } else { | |
1291 | switch (next->opcode) { | |
1292 | case IB_WR_RDMA_WRITE: | |
1293 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1294 | case IB_WR_RDMA_READ: | |
1295 | next->wr.rdma.remote_addr = | |
1296 | user_wr->wr.rdma.remote_addr; | |
1297 | next->wr.rdma.rkey = | |
1298 | user_wr->wr.rdma.rkey; | |
1299 | break; | |
1300 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
1301 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1302 | next->wr.atomic.remote_addr = | |
1303 | user_wr->wr.atomic.remote_addr; | |
1304 | next->wr.atomic.compare_add = | |
1305 | user_wr->wr.atomic.compare_add; | |
1306 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1307 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1308 | break; | |
1309 | default: | |
1310 | break; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | if (next->num_sge) { | |
1315 | next->sg_list = (void *) next + | |
1316 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1317 | if (copy_from_user(next->sg_list, | |
1318 | buf + sizeof cmd + | |
1319 | cmd.wr_count * cmd.wqe_size + | |
1320 | sg_ind * sizeof (struct ib_sge), | |
1321 | next->num_sge * sizeof (struct ib_sge))) { | |
1322 | ret = -EFAULT; | |
1323 | goto out; | |
1324 | } | |
1325 | sg_ind += next->num_sge; | |
1326 | } else | |
1327 | next->sg_list = NULL; | |
1328 | } | |
1329 | ||
1330 | resp.bad_wr = 0; | |
1331 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1332 | if (ret) | |
1333 | for (next = wr; next; next = next->next) { | |
1334 | ++resp.bad_wr; | |
1335 | if (next == bad_wr) | |
1336 | break; | |
1337 | } | |
1338 | ||
1339 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1340 | &resp, sizeof resp)) | |
1341 | ret = -EFAULT; | |
1342 | ||
1343 | out: | |
95ed644f | 1344 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1345 | |
1346 | while (wr) { | |
1347 | next = wr->next; | |
1348 | kfree(wr); | |
1349 | wr = next; | |
1350 | } | |
1351 | ||
1352 | kfree(user_wr); | |
1353 | ||
1354 | return ret ? ret : in_len; | |
1355 | } | |
1356 | ||
1357 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1358 | int in_len, | |
1359 | u32 wr_count, | |
1360 | u32 sge_count, | |
1361 | u32 wqe_size) | |
1362 | { | |
1363 | struct ib_uverbs_recv_wr *user_wr; | |
1364 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1365 | int sg_ind; | |
1366 | int i; | |
1367 | int ret; | |
1368 | ||
1369 | if (in_len < wqe_size * wr_count + | |
1370 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1371 | return ERR_PTR(-EINVAL); | |
1372 | ||
1373 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1374 | return ERR_PTR(-EINVAL); | |
1375 | ||
1376 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1377 | if (!user_wr) | |
1378 | return ERR_PTR(-ENOMEM); | |
1379 | ||
1380 | sg_ind = 0; | |
1381 | last = NULL; | |
1382 | for (i = 0; i < wr_count; ++i) { | |
1383 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1384 | wqe_size)) { | |
1385 | ret = -EFAULT; | |
1386 | goto err; | |
1387 | } | |
1388 | ||
1389 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1390 | ret = -EINVAL; | |
1391 | goto err; | |
1392 | } | |
1393 | ||
1394 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1395 | user_wr->num_sge * sizeof (struct ib_sge), | |
1396 | GFP_KERNEL); | |
1397 | if (!next) { | |
1398 | ret = -ENOMEM; | |
1399 | goto err; | |
1400 | } | |
1401 | ||
1402 | if (!last) | |
1403 | wr = next; | |
1404 | else | |
1405 | last->next = next; | |
1406 | last = next; | |
1407 | ||
1408 | next->next = NULL; | |
1409 | next->wr_id = user_wr->wr_id; | |
1410 | next->num_sge = user_wr->num_sge; | |
1411 | ||
1412 | if (next->num_sge) { | |
1413 | next->sg_list = (void *) next + | |
1414 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1415 | if (copy_from_user(next->sg_list, | |
1416 | buf + wr_count * wqe_size + | |
1417 | sg_ind * sizeof (struct ib_sge), | |
1418 | next->num_sge * sizeof (struct ib_sge))) { | |
1419 | ret = -EFAULT; | |
1420 | goto err; | |
1421 | } | |
1422 | sg_ind += next->num_sge; | |
1423 | } else | |
1424 | next->sg_list = NULL; | |
1425 | } | |
1426 | ||
1427 | kfree(user_wr); | |
1428 | return wr; | |
1429 | ||
1430 | err: | |
1431 | kfree(user_wr); | |
1432 | ||
1433 | while (wr) { | |
1434 | next = wr->next; | |
1435 | kfree(wr); | |
1436 | wr = next; | |
1437 | } | |
1438 | ||
1439 | return ERR_PTR(ret); | |
1440 | } | |
1441 | ||
1442 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1443 | const char __user *buf, int in_len, |
1444 | int out_len) | |
67cdb40c RD |
1445 | { |
1446 | struct ib_uverbs_post_recv cmd; | |
1447 | struct ib_uverbs_post_recv_resp resp; | |
1448 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1449 | struct ib_qp *qp; | |
1450 | ssize_t ret = -EINVAL; | |
1451 | ||
1452 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1453 | return -EFAULT; | |
1454 | ||
1455 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1456 | in_len - sizeof cmd, cmd.wr_count, | |
1457 | cmd.sge_count, cmd.wqe_size); | |
1458 | if (IS_ERR(wr)) | |
1459 | return PTR_ERR(wr); | |
1460 | ||
95ed644f | 1461 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1462 | |
1463 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1464 | if (!qp || qp->uobject->context != file->ucontext) | |
1465 | goto out; | |
1466 | ||
1467 | resp.bad_wr = 0; | |
1468 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
1469 | if (ret) | |
1470 | for (next = wr; next; next = next->next) { | |
1471 | ++resp.bad_wr; | |
1472 | if (next == bad_wr) | |
1473 | break; | |
1474 | } | |
1475 | ||
1476 | ||
1477 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1478 | &resp, sizeof resp)) | |
1479 | ret = -EFAULT; | |
1480 | ||
1481 | out: | |
95ed644f | 1482 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1483 | |
1484 | while (wr) { | |
1485 | next = wr->next; | |
1486 | kfree(wr); | |
1487 | wr = next; | |
1488 | } | |
1489 | ||
1490 | return ret ? ret : in_len; | |
1491 | } | |
1492 | ||
1493 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1494 | const char __user *buf, int in_len, |
1495 | int out_len) | |
67cdb40c RD |
1496 | { |
1497 | struct ib_uverbs_post_srq_recv cmd; | |
1498 | struct ib_uverbs_post_srq_recv_resp resp; | |
1499 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1500 | struct ib_srq *srq; | |
1501 | ssize_t ret = -EINVAL; | |
1502 | ||
1503 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1504 | return -EFAULT; | |
1505 | ||
1506 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1507 | in_len - sizeof cmd, cmd.wr_count, | |
1508 | cmd.sge_count, cmd.wqe_size); | |
1509 | if (IS_ERR(wr)) | |
1510 | return PTR_ERR(wr); | |
1511 | ||
95ed644f | 1512 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1513 | |
1514 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1515 | if (!srq || srq->uobject->context != file->ucontext) | |
1516 | goto out; | |
1517 | ||
1518 | resp.bad_wr = 0; | |
1519 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
1520 | if (ret) | |
1521 | for (next = wr; next; next = next->next) { | |
1522 | ++resp.bad_wr; | |
1523 | if (next == bad_wr) | |
1524 | break; | |
1525 | } | |
1526 | ||
1527 | ||
1528 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1529 | &resp, sizeof resp)) | |
1530 | ret = -EFAULT; | |
1531 | ||
1532 | out: | |
95ed644f | 1533 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1534 | |
1535 | while (wr) { | |
1536 | next = wr->next; | |
1537 | kfree(wr); | |
1538 | wr = next; | |
1539 | } | |
1540 | ||
1541 | return ret ? ret : in_len; | |
1542 | } | |
1543 | ||
1544 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1545 | const char __user *buf, int in_len, | |
1546 | int out_len) | |
1547 | { | |
1548 | struct ib_uverbs_create_ah cmd; | |
1549 | struct ib_uverbs_create_ah_resp resp; | |
1550 | struct ib_uobject *uobj; | |
1551 | struct ib_pd *pd; | |
1552 | struct ib_ah *ah; | |
1553 | struct ib_ah_attr attr; | |
1554 | int ret; | |
1555 | ||
1556 | if (out_len < sizeof resp) | |
1557 | return -ENOSPC; | |
1558 | ||
1559 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1560 | return -EFAULT; | |
1561 | ||
1562 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1563 | if (!uobj) | |
1564 | return -ENOMEM; | |
1565 | ||
95ed644f | 1566 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1567 | |
1568 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
1569 | if (!pd || pd->uobject->context != file->ucontext) { | |
1570 | ret = -EINVAL; | |
1571 | goto err_up; | |
1572 | } | |
1573 | ||
1574 | uobj->user_handle = cmd.user_handle; | |
1575 | uobj->context = file->ucontext; | |
1576 | ||
1577 | attr.dlid = cmd.attr.dlid; | |
1578 | attr.sl = cmd.attr.sl; | |
1579 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1580 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1581 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1582 | attr.port_num = cmd.attr.port_num; |
1583 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1584 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1585 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1586 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1587 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1588 | ||
1589 | ah = ib_create_ah(pd, &attr); | |
1590 | if (IS_ERR(ah)) { | |
1591 | ret = PTR_ERR(ah); | |
1592 | goto err_up; | |
1593 | } | |
1594 | ||
1595 | ah->uobject = uobj; | |
1596 | ||
3463175d | 1597 | ret = idr_add_uobj(&ib_uverbs_ah_idr, ah, uobj); |
67cdb40c RD |
1598 | if (ret) |
1599 | goto err_destroy; | |
1600 | ||
1601 | resp.ah_handle = uobj->id; | |
1602 | ||
1603 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1604 | &resp, sizeof resp)) { | |
1605 | ret = -EFAULT; | |
1606 | goto err_idr; | |
1607 | } | |
1608 | ||
95ed644f | 1609 | mutex_lock(&file->mutex); |
67cdb40c | 1610 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1611 | mutex_unlock(&file->mutex); |
67cdb40c | 1612 | |
95ed644f | 1613 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1614 | |
1615 | return in_len; | |
1616 | ||
1617 | err_idr: | |
1618 | idr_remove(&ib_uverbs_ah_idr, uobj->id); | |
1619 | ||
1620 | err_destroy: | |
1621 | ib_destroy_ah(ah); | |
1622 | ||
1623 | err_up: | |
95ed644f | 1624 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1625 | |
1626 | kfree(uobj); | |
1627 | return ret; | |
1628 | } | |
1629 | ||
1630 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1631 | const char __user *buf, int in_len, int out_len) | |
1632 | { | |
1633 | struct ib_uverbs_destroy_ah cmd; | |
1634 | struct ib_ah *ah; | |
1635 | struct ib_uobject *uobj; | |
1636 | int ret = -EINVAL; | |
1637 | ||
1638 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1639 | return -EFAULT; | |
1640 | ||
95ed644f | 1641 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1642 | |
1643 | ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle); | |
1644 | if (!ah || ah->uobject->context != file->ucontext) | |
1645 | goto out; | |
1646 | ||
1647 | uobj = ah->uobject; | |
1648 | ||
1649 | ret = ib_destroy_ah(ah); | |
1650 | if (ret) | |
1651 | goto out; | |
1652 | ||
1653 | idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle); | |
1654 | ||
95ed644f | 1655 | mutex_lock(&file->mutex); |
67cdb40c | 1656 | list_del(&uobj->list); |
95ed644f | 1657 | mutex_unlock(&file->mutex); |
67cdb40c RD |
1658 | |
1659 | kfree(uobj); | |
1660 | ||
1661 | out: | |
95ed644f | 1662 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1663 | |
1664 | return ret ? ret : in_len; | |
1665 | } | |
1666 | ||
bc38a6ab RD |
1667 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1668 | const char __user *buf, int in_len, | |
1669 | int out_len) | |
1670 | { | |
1671 | struct ib_uverbs_attach_mcast cmd; | |
1672 | struct ib_qp *qp; | |
f4e40156 JM |
1673 | struct ib_uqp_object *uobj; |
1674 | struct ib_uverbs_mcast_entry *mcast; | |
bc38a6ab RD |
1675 | int ret = -EINVAL; |
1676 | ||
1677 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1678 | return -EFAULT; | |
1679 | ||
95ed644f | 1680 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1681 | |
1682 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
f4e40156 JM |
1683 | if (!qp || qp->uobject->context != file->ucontext) |
1684 | goto out; | |
1685 | ||
1686 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); | |
1687 | ||
1688 | list_for_each_entry(mcast, &uobj->mcast_list, list) | |
1689 | if (cmd.mlid == mcast->lid && | |
1690 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1691 | ret = 0; | |
1692 | goto out; | |
1693 | } | |
1694 | ||
1695 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1696 | if (!mcast) { | |
1697 | ret = -ENOMEM; | |
1698 | goto out; | |
1699 | } | |
1700 | ||
1701 | mcast->lid = cmd.mlid; | |
1702 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1703 | |
f4e40156 JM |
1704 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
1705 | if (!ret) { | |
1706 | uobj = container_of(qp->uobject, struct ib_uqp_object, | |
1707 | uevent.uobject); | |
1708 | list_add_tail(&mcast->list, &uobj->mcast_list); | |
1709 | } else | |
1710 | kfree(mcast); | |
1711 | ||
1712 | out: | |
95ed644f | 1713 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1714 | |
1715 | return ret ? ret : in_len; | |
1716 | } | |
1717 | ||
1718 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1719 | const char __user *buf, int in_len, | |
1720 | int out_len) | |
1721 | { | |
1722 | struct ib_uverbs_detach_mcast cmd; | |
f4e40156 | 1723 | struct ib_uqp_object *uobj; |
bc38a6ab | 1724 | struct ib_qp *qp; |
f4e40156 | 1725 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1726 | int ret = -EINVAL; |
1727 | ||
1728 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1729 | return -EFAULT; | |
1730 | ||
95ed644f | 1731 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1732 | |
1733 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
f4e40156 JM |
1734 | if (!qp || qp->uobject->context != file->ucontext) |
1735 | goto out; | |
bc38a6ab | 1736 | |
f4e40156 JM |
1737 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1738 | if (ret) | |
1739 | goto out; | |
1740 | ||
1741 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); | |
1742 | ||
1743 | list_for_each_entry(mcast, &uobj->mcast_list, list) | |
1744 | if (cmd.mlid == mcast->lid && | |
1745 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1746 | list_del(&mcast->list); | |
1747 | kfree(mcast); | |
1748 | break; | |
1749 | } | |
1750 | ||
1751 | out: | |
95ed644f | 1752 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1753 | |
1754 | return ret ? ret : in_len; | |
1755 | } | |
f520ba5a RD |
1756 | |
1757 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1758 | const char __user *buf, int in_len, | |
1759 | int out_len) | |
1760 | { | |
1761 | struct ib_uverbs_create_srq cmd; | |
1762 | struct ib_uverbs_create_srq_resp resp; | |
1763 | struct ib_udata udata; | |
63aaf647 | 1764 | struct ib_uevent_object *uobj; |
f520ba5a RD |
1765 | struct ib_pd *pd; |
1766 | struct ib_srq *srq; | |
1767 | struct ib_srq_init_attr attr; | |
1768 | int ret; | |
1769 | ||
1770 | if (out_len < sizeof resp) | |
1771 | return -ENOSPC; | |
1772 | ||
1773 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1774 | return -EFAULT; | |
1775 | ||
1776 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1777 | (unsigned long) cmd.response + sizeof resp, | |
1778 | in_len - sizeof cmd, out_len - sizeof resp); | |
1779 | ||
1780 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1781 | if (!uobj) | |
1782 | return -ENOMEM; | |
1783 | ||
95ed644f | 1784 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1785 | |
1786 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
1787 | ||
1788 | if (!pd || pd->uobject->context != file->ucontext) { | |
1789 | ret = -EINVAL; | |
1790 | goto err_up; | |
1791 | } | |
1792 | ||
1793 | attr.event_handler = ib_uverbs_srq_event_handler; | |
1794 | attr.srq_context = file; | |
1795 | attr.attr.max_wr = cmd.max_wr; | |
1796 | attr.attr.max_sge = cmd.max_sge; | |
1797 | attr.attr.srq_limit = cmd.srq_limit; | |
1798 | ||
63aaf647 RD |
1799 | uobj->uobject.user_handle = cmd.user_handle; |
1800 | uobj->uobject.context = file->ucontext; | |
1801 | uobj->events_reported = 0; | |
1802 | INIT_LIST_HEAD(&uobj->event_list); | |
f520ba5a RD |
1803 | |
1804 | srq = pd->device->create_srq(pd, &attr, &udata); | |
1805 | if (IS_ERR(srq)) { | |
1806 | ret = PTR_ERR(srq); | |
1807 | goto err_up; | |
1808 | } | |
1809 | ||
1810 | srq->device = pd->device; | |
1811 | srq->pd = pd; | |
63aaf647 | 1812 | srq->uobject = &uobj->uobject; |
f520ba5a RD |
1813 | srq->event_handler = attr.event_handler; |
1814 | srq->srq_context = attr.srq_context; | |
1815 | atomic_inc(&pd->usecnt); | |
1816 | atomic_set(&srq->usecnt, 0); | |
1817 | ||
1818 | memset(&resp, 0, sizeof resp); | |
1819 | ||
3463175d | 1820 | ret = idr_add_uobj(&ib_uverbs_srq_idr, srq, &uobj->uobject); |
f520ba5a RD |
1821 | if (ret) |
1822 | goto err_destroy; | |
1823 | ||
63aaf647 | 1824 | resp.srq_handle = uobj->uobject.id; |
ea88fd16 DB |
1825 | resp.max_wr = attr.attr.max_wr; |
1826 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 1827 | |
f520ba5a RD |
1828 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1829 | &resp, sizeof resp)) { | |
1830 | ret = -EFAULT; | |
eb9d3cd5 | 1831 | goto err_idr; |
f520ba5a RD |
1832 | } |
1833 | ||
95ed644f | 1834 | mutex_lock(&file->mutex); |
eb9d3cd5 | 1835 | list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 1836 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1837 | |
95ed644f | 1838 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1839 | |
1840 | return in_len; | |
1841 | ||
eb9d3cd5 RD |
1842 | err_idr: |
1843 | idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id); | |
f520ba5a RD |
1844 | |
1845 | err_destroy: | |
1846 | ib_destroy_srq(srq); | |
1847 | ||
1848 | err_up: | |
95ed644f | 1849 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1850 | |
1851 | kfree(uobj); | |
1852 | return ret; | |
1853 | } | |
1854 | ||
1855 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
1856 | const char __user *buf, int in_len, | |
1857 | int out_len) | |
1858 | { | |
1859 | struct ib_uverbs_modify_srq cmd; | |
1860 | struct ib_srq *srq; | |
1861 | struct ib_srq_attr attr; | |
1862 | int ret; | |
1863 | ||
1864 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1865 | return -EFAULT; | |
1866 | ||
95ed644f | 1867 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1868 | |
1869 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1870 | if (!srq || srq->uobject->context != file->ucontext) { | |
1871 | ret = -EINVAL; | |
1872 | goto out; | |
1873 | } | |
1874 | ||
1875 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
1876 | attr.srq_limit = cmd.srq_limit; |
1877 | ||
1878 | ret = ib_modify_srq(srq, &attr, cmd.attr_mask); | |
1879 | ||
1880 | out: | |
95ed644f | 1881 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1882 | |
1883 | return ret ? ret : in_len; | |
1884 | } | |
1885 | ||
8bdb0e86 DB |
1886 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
1887 | const char __user *buf, | |
1888 | int in_len, int out_len) | |
1889 | { | |
1890 | struct ib_uverbs_query_srq cmd; | |
1891 | struct ib_uverbs_query_srq_resp resp; | |
1892 | struct ib_srq_attr attr; | |
1893 | struct ib_srq *srq; | |
1894 | int ret; | |
1895 | ||
1896 | if (out_len < sizeof resp) | |
1897 | return -ENOSPC; | |
1898 | ||
1899 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1900 | return -EFAULT; | |
1901 | ||
1902 | mutex_lock(&ib_uverbs_idr_mutex); | |
1903 | ||
1904 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1905 | if (srq && srq->uobject->context == file->ucontext) | |
1906 | ret = ib_query_srq(srq, &attr); | |
1907 | else | |
1908 | ret = -EINVAL; | |
1909 | ||
1910 | mutex_unlock(&ib_uverbs_idr_mutex); | |
1911 | ||
1912 | if (ret) | |
1913 | goto out; | |
1914 | ||
1915 | memset(&resp, 0, sizeof resp); | |
1916 | ||
1917 | resp.max_wr = attr.max_wr; | |
1918 | resp.max_sge = attr.max_sge; | |
1919 | resp.srq_limit = attr.srq_limit; | |
1920 | ||
1921 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1922 | &resp, sizeof resp)) | |
1923 | ret = -EFAULT; | |
1924 | ||
1925 | out: | |
1926 | return ret ? ret : in_len; | |
1927 | } | |
1928 | ||
f520ba5a RD |
1929 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
1930 | const char __user *buf, int in_len, | |
1931 | int out_len) | |
1932 | { | |
63aaf647 RD |
1933 | struct ib_uverbs_destroy_srq cmd; |
1934 | struct ib_uverbs_destroy_srq_resp resp; | |
1935 | struct ib_srq *srq; | |
1936 | struct ib_uevent_object *uobj; | |
63aaf647 | 1937 | int ret = -EINVAL; |
f520ba5a RD |
1938 | |
1939 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1940 | return -EFAULT; | |
1941 | ||
95ed644f | 1942 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a | 1943 | |
63aaf647 RD |
1944 | memset(&resp, 0, sizeof resp); |
1945 | ||
f520ba5a RD |
1946 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
1947 | if (!srq || srq->uobject->context != file->ucontext) | |
1948 | goto out; | |
1949 | ||
63aaf647 | 1950 | uobj = container_of(srq->uobject, struct ib_uevent_object, uobject); |
f520ba5a RD |
1951 | |
1952 | ret = ib_destroy_srq(srq); | |
1953 | if (ret) | |
1954 | goto out; | |
1955 | ||
1956 | idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1957 | ||
95ed644f | 1958 | mutex_lock(&file->mutex); |
63aaf647 | 1959 | list_del(&uobj->uobject.list); |
95ed644f | 1960 | mutex_unlock(&file->mutex); |
f520ba5a | 1961 | |
70a30e16 | 1962 | ib_uverbs_release_uevent(file, uobj); |
63aaf647 RD |
1963 | |
1964 | resp.events_reported = uobj->events_reported; | |
1965 | ||
f520ba5a RD |
1966 | kfree(uobj); |
1967 | ||
63aaf647 RD |
1968 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1969 | &resp, sizeof resp)) | |
1970 | ret = -EFAULT; | |
1971 | ||
f520ba5a | 1972 | out: |
95ed644f | 1973 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1974 | |
1975 | return ret ? ret : in_len; | |
1976 | } |