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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. | |
3 | * Copyright (c) 2004 Infinicon Corporation. All rights reserved. | |
4 | * Copyright (c) 2004 Intel Corporation. All rights reserved. | |
5 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. | |
6 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. | |
2a1d9b7f | 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
33b9b3ee | 8 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
1da177e4 LT |
9 | * |
10 | * This software is available to you under a choice of one of two | |
11 | * licenses. You may choose to be licensed under the terms of the GNU | |
12 | * General Public License (GPL) Version 2, available from the file | |
13 | * COPYING in the main directory of this source tree, or the | |
14 | * OpenIB.org BSD license below: | |
15 | * | |
16 | * Redistribution and use in source and binary forms, with or | |
17 | * without modification, are permitted provided that the following | |
18 | * conditions are met: | |
19 | * | |
20 | * - Redistributions of source code must retain the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer. | |
23 | * | |
24 | * - Redistributions in binary form must reproduce the above | |
25 | * copyright notice, this list of conditions and the following | |
26 | * disclaimer in the documentation and/or other materials | |
27 | * provided with the distribution. | |
28 | * | |
29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
30 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
31 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
32 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
33 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
34 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
35 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
36 | * SOFTWARE. | |
37 | * | |
38 | * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $ | |
39 | */ | |
40 | ||
41 | #include <linux/errno.h> | |
42 | #include <linux/err.h> | |
8c65b4a6 | 43 | #include <linux/string.h> |
1da177e4 | 44 | |
a4d61e84 RD |
45 | #include <rdma/ib_verbs.h> |
46 | #include <rdma/ib_cache.h> | |
1da177e4 LT |
47 | |
48 | /* Protection domains */ | |
49 | ||
50 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
51 | { | |
52 | struct ib_pd *pd; | |
53 | ||
b5e81bf5 | 54 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
55 | |
56 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
57 | pd->device = device; |
58 | pd->uobject = NULL; | |
1da177e4 LT |
59 | atomic_set(&pd->usecnt, 0); |
60 | } | |
61 | ||
62 | return pd; | |
63 | } | |
64 | EXPORT_SYMBOL(ib_alloc_pd); | |
65 | ||
66 | int ib_dealloc_pd(struct ib_pd *pd) | |
67 | { | |
68 | if (atomic_read(&pd->usecnt)) | |
69 | return -EBUSY; | |
70 | ||
71 | return pd->device->dealloc_pd(pd); | |
72 | } | |
73 | EXPORT_SYMBOL(ib_dealloc_pd); | |
74 | ||
75 | /* Address handles */ | |
76 | ||
77 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
78 | { | |
79 | struct ib_ah *ah; | |
80 | ||
81 | ah = pd->device->create_ah(pd, ah_attr); | |
82 | ||
83 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
84 | ah->device = pd->device; |
85 | ah->pd = pd; | |
86 | ah->uobject = NULL; | |
1da177e4 LT |
87 | atomic_inc(&pd->usecnt); |
88 | } | |
89 | ||
90 | return ah; | |
91 | } | |
92 | EXPORT_SYMBOL(ib_create_ah); | |
93 | ||
513789ed HR |
94 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, |
95 | struct ib_grh *grh, u8 port_num) | |
96 | { | |
97 | struct ib_ah_attr ah_attr; | |
98 | u32 flow_class; | |
99 | u16 gid_index; | |
100 | int ret; | |
101 | ||
102 | memset(&ah_attr, 0, sizeof ah_attr); | |
103 | ah_attr.dlid = wc->slid; | |
104 | ah_attr.sl = wc->sl; | |
105 | ah_attr.src_path_bits = wc->dlid_path_bits; | |
106 | ah_attr.port_num = port_num; | |
107 | ||
108 | if (wc->wc_flags & IB_WC_GRH) { | |
109 | ah_attr.ah_flags = IB_AH_GRH; | |
4f8448df | 110 | ah_attr.grh.dgid = grh->sgid; |
513789ed | 111 | |
4f8448df | 112 | ret = ib_find_cached_gid(pd->device, &grh->dgid, &port_num, |
513789ed HR |
113 | &gid_index); |
114 | if (ret) | |
115 | return ERR_PTR(ret); | |
116 | ||
117 | ah_attr.grh.sgid_index = (u8) gid_index; | |
497677ab | 118 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
513789ed HR |
119 | ah_attr.grh.flow_label = flow_class & 0xFFFFF; |
120 | ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF; | |
121 | ah_attr.grh.hop_limit = grh->hop_limit; | |
122 | } | |
123 | ||
124 | return ib_create_ah(pd, &ah_attr); | |
125 | } | |
126 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
127 | ||
1da177e4 LT |
128 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
129 | { | |
130 | return ah->device->modify_ah ? | |
131 | ah->device->modify_ah(ah, ah_attr) : | |
132 | -ENOSYS; | |
133 | } | |
134 | EXPORT_SYMBOL(ib_modify_ah); | |
135 | ||
136 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
137 | { | |
138 | return ah->device->query_ah ? | |
139 | ah->device->query_ah(ah, ah_attr) : | |
140 | -ENOSYS; | |
141 | } | |
142 | EXPORT_SYMBOL(ib_query_ah); | |
143 | ||
144 | int ib_destroy_ah(struct ib_ah *ah) | |
145 | { | |
146 | struct ib_pd *pd; | |
147 | int ret; | |
148 | ||
149 | pd = ah->pd; | |
150 | ret = ah->device->destroy_ah(ah); | |
151 | if (!ret) | |
152 | atomic_dec(&pd->usecnt); | |
153 | ||
154 | return ret; | |
155 | } | |
156 | EXPORT_SYMBOL(ib_destroy_ah); | |
157 | ||
d41fcc67 RD |
158 | /* Shared receive queues */ |
159 | ||
160 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
161 | struct ib_srq_init_attr *srq_init_attr) | |
162 | { | |
163 | struct ib_srq *srq; | |
164 | ||
165 | if (!pd->device->create_srq) | |
166 | return ERR_PTR(-ENOSYS); | |
167 | ||
168 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
169 | ||
170 | if (!IS_ERR(srq)) { | |
171 | srq->device = pd->device; | |
172 | srq->pd = pd; | |
173 | srq->uobject = NULL; | |
174 | srq->event_handler = srq_init_attr->event_handler; | |
175 | srq->srq_context = srq_init_attr->srq_context; | |
176 | atomic_inc(&pd->usecnt); | |
177 | atomic_set(&srq->usecnt, 0); | |
178 | } | |
179 | ||
180 | return srq; | |
181 | } | |
182 | EXPORT_SYMBOL(ib_create_srq); | |
183 | ||
184 | int ib_modify_srq(struct ib_srq *srq, | |
185 | struct ib_srq_attr *srq_attr, | |
186 | enum ib_srq_attr_mask srq_attr_mask) | |
187 | { | |
188 | return srq->device->modify_srq(srq, srq_attr, srq_attr_mask); | |
189 | } | |
190 | EXPORT_SYMBOL(ib_modify_srq); | |
191 | ||
192 | int ib_query_srq(struct ib_srq *srq, | |
193 | struct ib_srq_attr *srq_attr) | |
194 | { | |
195 | return srq->device->query_srq ? | |
196 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
197 | } | |
198 | EXPORT_SYMBOL(ib_query_srq); | |
199 | ||
200 | int ib_destroy_srq(struct ib_srq *srq) | |
201 | { | |
202 | struct ib_pd *pd; | |
203 | int ret; | |
204 | ||
205 | if (atomic_read(&srq->usecnt)) | |
206 | return -EBUSY; | |
207 | ||
208 | pd = srq->pd; | |
209 | ||
210 | ret = srq->device->destroy_srq(srq); | |
211 | if (!ret) | |
212 | atomic_dec(&pd->usecnt); | |
213 | ||
214 | return ret; | |
215 | } | |
216 | EXPORT_SYMBOL(ib_destroy_srq); | |
217 | ||
1da177e4 LT |
218 | /* Queue pairs */ |
219 | ||
220 | struct ib_qp *ib_create_qp(struct ib_pd *pd, | |
221 | struct ib_qp_init_attr *qp_init_attr) | |
222 | { | |
223 | struct ib_qp *qp; | |
224 | ||
b5e81bf5 | 225 | qp = pd->device->create_qp(pd, qp_init_attr, NULL); |
1da177e4 LT |
226 | |
227 | if (!IS_ERR(qp)) { | |
228 | qp->device = pd->device; | |
229 | qp->pd = pd; | |
230 | qp->send_cq = qp_init_attr->send_cq; | |
231 | qp->recv_cq = qp_init_attr->recv_cq; | |
232 | qp->srq = qp_init_attr->srq; | |
b5e81bf5 | 233 | qp->uobject = NULL; |
1da177e4 LT |
234 | qp->event_handler = qp_init_attr->event_handler; |
235 | qp->qp_context = qp_init_attr->qp_context; | |
236 | qp->qp_type = qp_init_attr->qp_type; | |
237 | atomic_inc(&pd->usecnt); | |
238 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
239 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
240 | if (qp_init_attr->srq) | |
241 | atomic_inc(&qp_init_attr->srq->usecnt); | |
242 | } | |
243 | ||
244 | return qp; | |
245 | } | |
246 | EXPORT_SYMBOL(ib_create_qp); | |
247 | ||
8a51866f RD |
248 | static const struct { |
249 | int valid; | |
250 | enum ib_qp_attr_mask req_param[IB_QPT_RAW_ETY + 1]; | |
251 | enum ib_qp_attr_mask opt_param[IB_QPT_RAW_ETY + 1]; | |
252 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { | |
253 | [IB_QPS_RESET] = { | |
254 | [IB_QPS_RESET] = { .valid = 1 }, | |
255 | [IB_QPS_ERR] = { .valid = 1 }, | |
256 | [IB_QPS_INIT] = { | |
257 | .valid = 1, | |
258 | .req_param = { | |
259 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
260 | IB_QP_PORT | | |
261 | IB_QP_QKEY), | |
262 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
263 | IB_QP_PORT | | |
264 | IB_QP_ACCESS_FLAGS), | |
265 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
266 | IB_QP_PORT | | |
267 | IB_QP_ACCESS_FLAGS), | |
268 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
269 | IB_QP_QKEY), | |
270 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
271 | IB_QP_QKEY), | |
272 | } | |
273 | }, | |
274 | }, | |
275 | [IB_QPS_INIT] = { | |
276 | [IB_QPS_RESET] = { .valid = 1 }, | |
277 | [IB_QPS_ERR] = { .valid = 1 }, | |
278 | [IB_QPS_INIT] = { | |
279 | .valid = 1, | |
280 | .opt_param = { | |
281 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
282 | IB_QP_PORT | | |
283 | IB_QP_QKEY), | |
284 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
285 | IB_QP_PORT | | |
286 | IB_QP_ACCESS_FLAGS), | |
287 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
288 | IB_QP_PORT | | |
289 | IB_QP_ACCESS_FLAGS), | |
290 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
291 | IB_QP_QKEY), | |
292 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
293 | IB_QP_QKEY), | |
294 | } | |
295 | }, | |
296 | [IB_QPS_RTR] = { | |
297 | .valid = 1, | |
298 | .req_param = { | |
299 | [IB_QPT_UC] = (IB_QP_AV | | |
300 | IB_QP_PATH_MTU | | |
301 | IB_QP_DEST_QPN | | |
302 | IB_QP_RQ_PSN), | |
303 | [IB_QPT_RC] = (IB_QP_AV | | |
304 | IB_QP_PATH_MTU | | |
305 | IB_QP_DEST_QPN | | |
306 | IB_QP_RQ_PSN | | |
307 | IB_QP_MAX_DEST_RD_ATOMIC | | |
308 | IB_QP_MIN_RNR_TIMER), | |
309 | }, | |
310 | .opt_param = { | |
311 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
312 | IB_QP_QKEY), | |
313 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
314 | IB_QP_ACCESS_FLAGS | | |
315 | IB_QP_PKEY_INDEX), | |
316 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
317 | IB_QP_ACCESS_FLAGS | | |
318 | IB_QP_PKEY_INDEX), | |
319 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
320 | IB_QP_QKEY), | |
321 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
322 | IB_QP_QKEY), | |
323 | } | |
324 | } | |
325 | }, | |
326 | [IB_QPS_RTR] = { | |
327 | [IB_QPS_RESET] = { .valid = 1 }, | |
328 | [IB_QPS_ERR] = { .valid = 1 }, | |
329 | [IB_QPS_RTS] = { | |
330 | .valid = 1, | |
331 | .req_param = { | |
332 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
333 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
334 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
335 | IB_QP_RETRY_CNT | | |
336 | IB_QP_RNR_RETRY | | |
337 | IB_QP_SQ_PSN | | |
338 | IB_QP_MAX_QP_RD_ATOMIC), | |
339 | [IB_QPT_SMI] = IB_QP_SQ_PSN, | |
340 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
341 | }, | |
342 | .opt_param = { | |
343 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
344 | IB_QP_QKEY), | |
345 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
346 | IB_QP_ALT_PATH | | |
347 | IB_QP_ACCESS_FLAGS | | |
348 | IB_QP_PATH_MIG_STATE), | |
349 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
350 | IB_QP_ALT_PATH | | |
351 | IB_QP_ACCESS_FLAGS | | |
352 | IB_QP_MIN_RNR_TIMER | | |
353 | IB_QP_PATH_MIG_STATE), | |
354 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
355 | IB_QP_QKEY), | |
356 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
357 | IB_QP_QKEY), | |
358 | } | |
359 | } | |
360 | }, | |
361 | [IB_QPS_RTS] = { | |
362 | [IB_QPS_RESET] = { .valid = 1 }, | |
363 | [IB_QPS_ERR] = { .valid = 1 }, | |
364 | [IB_QPS_RTS] = { | |
365 | .valid = 1, | |
366 | .opt_param = { | |
367 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
368 | IB_QP_QKEY), | |
4546d31d DB |
369 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
370 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
371 | IB_QP_ALT_PATH | |
372 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
373 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
374 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
375 | IB_QP_ALT_PATH | |
376 | IB_QP_PATH_MIG_STATE | | |
377 | IB_QP_MIN_RNR_TIMER), | |
378 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
379 | IB_QP_QKEY), | |
380 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
381 | IB_QP_QKEY), | |
382 | } | |
383 | }, | |
384 | [IB_QPS_SQD] = { | |
385 | .valid = 1, | |
386 | .opt_param = { | |
387 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
388 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
389 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
390 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
391 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
392 | } | |
393 | }, | |
394 | }, | |
395 | [IB_QPS_SQD] = { | |
396 | [IB_QPS_RESET] = { .valid = 1 }, | |
397 | [IB_QPS_ERR] = { .valid = 1 }, | |
398 | [IB_QPS_RTS] = { | |
399 | .valid = 1, | |
400 | .opt_param = { | |
401 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
402 | IB_QP_QKEY), | |
403 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
404 | IB_QP_ALT_PATH | | |
405 | IB_QP_ACCESS_FLAGS | | |
406 | IB_QP_PATH_MIG_STATE), | |
407 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
408 | IB_QP_ALT_PATH | | |
409 | IB_QP_ACCESS_FLAGS | | |
410 | IB_QP_MIN_RNR_TIMER | | |
411 | IB_QP_PATH_MIG_STATE), | |
412 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
413 | IB_QP_QKEY), | |
414 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
415 | IB_QP_QKEY), | |
416 | } | |
417 | }, | |
418 | [IB_QPS_SQD] = { | |
419 | .valid = 1, | |
420 | .opt_param = { | |
421 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
422 | IB_QP_QKEY), | |
423 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
424 | IB_QP_ALT_PATH | |
425 | IB_QP_ACCESS_FLAGS | | |
426 | IB_QP_PKEY_INDEX | | |
427 | IB_QP_PATH_MIG_STATE), | |
428 | [IB_QPT_RC] = (IB_QP_PORT | | |
429 | IB_QP_AV | | |
430 | IB_QP_TIMEOUT | | |
431 | IB_QP_RETRY_CNT | | |
432 | IB_QP_RNR_RETRY | | |
433 | IB_QP_MAX_QP_RD_ATOMIC | | |
434 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
435 | IB_QP_ALT_PATH | |
436 | IB_QP_ACCESS_FLAGS | | |
437 | IB_QP_PKEY_INDEX | | |
438 | IB_QP_MIN_RNR_TIMER | | |
439 | IB_QP_PATH_MIG_STATE), | |
440 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
441 | IB_QP_QKEY), | |
442 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
443 | IB_QP_QKEY), | |
444 | } | |
445 | } | |
446 | }, | |
447 | [IB_QPS_SQE] = { | |
448 | [IB_QPS_RESET] = { .valid = 1 }, | |
449 | [IB_QPS_ERR] = { .valid = 1 }, | |
450 | [IB_QPS_RTS] = { | |
451 | .valid = 1, | |
452 | .opt_param = { | |
453 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
454 | IB_QP_QKEY), | |
455 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
456 | IB_QP_ACCESS_FLAGS), | |
457 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
458 | IB_QP_QKEY), | |
459 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
460 | IB_QP_QKEY), | |
461 | } | |
462 | } | |
463 | }, | |
464 | [IB_QPS_ERR] = { | |
465 | [IB_QPS_RESET] = { .valid = 1 }, | |
466 | [IB_QPS_ERR] = { .valid = 1 } | |
467 | } | |
468 | }; | |
469 | ||
470 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
471 | enum ib_qp_type type, enum ib_qp_attr_mask mask) | |
472 | { | |
473 | enum ib_qp_attr_mask req_param, opt_param; | |
474 | ||
475 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
476 | next_state < 0 || next_state > IB_QPS_ERR) | |
477 | return 0; | |
478 | ||
479 | if (mask & IB_QP_CUR_STATE && | |
480 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
481 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
482 | return 0; | |
483 | ||
484 | if (!qp_state_table[cur_state][next_state].valid) | |
485 | return 0; | |
486 | ||
487 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
488 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
489 | ||
490 | if ((mask & req_param) != req_param) | |
491 | return 0; | |
492 | ||
493 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
494 | return 0; | |
495 | ||
496 | return 1; | |
497 | } | |
498 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
499 | ||
1da177e4 LT |
500 | int ib_modify_qp(struct ib_qp *qp, |
501 | struct ib_qp_attr *qp_attr, | |
502 | int qp_attr_mask) | |
503 | { | |
504 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask); | |
505 | } | |
506 | EXPORT_SYMBOL(ib_modify_qp); | |
507 | ||
508 | int ib_query_qp(struct ib_qp *qp, | |
509 | struct ib_qp_attr *qp_attr, | |
510 | int qp_attr_mask, | |
511 | struct ib_qp_init_attr *qp_init_attr) | |
512 | { | |
513 | return qp->device->query_qp ? | |
514 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : | |
515 | -ENOSYS; | |
516 | } | |
517 | EXPORT_SYMBOL(ib_query_qp); | |
518 | ||
519 | int ib_destroy_qp(struct ib_qp *qp) | |
520 | { | |
521 | struct ib_pd *pd; | |
522 | struct ib_cq *scq, *rcq; | |
523 | struct ib_srq *srq; | |
524 | int ret; | |
525 | ||
526 | pd = qp->pd; | |
527 | scq = qp->send_cq; | |
528 | rcq = qp->recv_cq; | |
529 | srq = qp->srq; | |
530 | ||
531 | ret = qp->device->destroy_qp(qp); | |
532 | if (!ret) { | |
533 | atomic_dec(&pd->usecnt); | |
534 | atomic_dec(&scq->usecnt); | |
535 | atomic_dec(&rcq->usecnt); | |
536 | if (srq) | |
537 | atomic_dec(&srq->usecnt); | |
538 | } | |
539 | ||
540 | return ret; | |
541 | } | |
542 | EXPORT_SYMBOL(ib_destroy_qp); | |
543 | ||
544 | /* Completion queues */ | |
545 | ||
546 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
547 | ib_comp_handler comp_handler, | |
548 | void (*event_handler)(struct ib_event *, void *), | |
549 | void *cq_context, int cqe) | |
550 | { | |
551 | struct ib_cq *cq; | |
552 | ||
b5e81bf5 | 553 | cq = device->create_cq(device, cqe, NULL, NULL); |
1da177e4 LT |
554 | |
555 | if (!IS_ERR(cq)) { | |
556 | cq->device = device; | |
b5e81bf5 | 557 | cq->uobject = NULL; |
1da177e4 LT |
558 | cq->comp_handler = comp_handler; |
559 | cq->event_handler = event_handler; | |
560 | cq->cq_context = cq_context; | |
561 | atomic_set(&cq->usecnt, 0); | |
562 | } | |
563 | ||
564 | return cq; | |
565 | } | |
566 | EXPORT_SYMBOL(ib_create_cq); | |
567 | ||
568 | int ib_destroy_cq(struct ib_cq *cq) | |
569 | { | |
570 | if (atomic_read(&cq->usecnt)) | |
571 | return -EBUSY; | |
572 | ||
573 | return cq->device->destroy_cq(cq); | |
574 | } | |
575 | EXPORT_SYMBOL(ib_destroy_cq); | |
576 | ||
a74cd4af | 577 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 578 | { |
40de2e54 | 579 | return cq->device->resize_cq ? |
33b9b3ee | 580 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
581 | } |
582 | EXPORT_SYMBOL(ib_resize_cq); | |
583 | ||
584 | /* Memory regions */ | |
585 | ||
586 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
587 | { | |
588 | struct ib_mr *mr; | |
589 | ||
590 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
591 | ||
592 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
593 | mr->device = pd->device; |
594 | mr->pd = pd; | |
595 | mr->uobject = NULL; | |
1da177e4 LT |
596 | atomic_inc(&pd->usecnt); |
597 | atomic_set(&mr->usecnt, 0); | |
598 | } | |
599 | ||
600 | return mr; | |
601 | } | |
602 | EXPORT_SYMBOL(ib_get_dma_mr); | |
603 | ||
604 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
605 | struct ib_phys_buf *phys_buf_array, | |
606 | int num_phys_buf, | |
607 | int mr_access_flags, | |
608 | u64 *iova_start) | |
609 | { | |
610 | struct ib_mr *mr; | |
611 | ||
612 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, | |
613 | mr_access_flags, iova_start); | |
614 | ||
615 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
616 | mr->device = pd->device; |
617 | mr->pd = pd; | |
618 | mr->uobject = NULL; | |
1da177e4 LT |
619 | atomic_inc(&pd->usecnt); |
620 | atomic_set(&mr->usecnt, 0); | |
621 | } | |
622 | ||
623 | return mr; | |
624 | } | |
625 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
626 | ||
627 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
628 | int mr_rereg_mask, | |
629 | struct ib_pd *pd, | |
630 | struct ib_phys_buf *phys_buf_array, | |
631 | int num_phys_buf, | |
632 | int mr_access_flags, | |
633 | u64 *iova_start) | |
634 | { | |
635 | struct ib_pd *old_pd; | |
636 | int ret; | |
637 | ||
638 | if (!mr->device->rereg_phys_mr) | |
639 | return -ENOSYS; | |
640 | ||
641 | if (atomic_read(&mr->usecnt)) | |
642 | return -EBUSY; | |
643 | ||
644 | old_pd = mr->pd; | |
645 | ||
646 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
647 | phys_buf_array, num_phys_buf, | |
648 | mr_access_flags, iova_start); | |
649 | ||
650 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
651 | atomic_dec(&old_pd->usecnt); | |
652 | atomic_inc(&pd->usecnt); | |
653 | } | |
654 | ||
655 | return ret; | |
656 | } | |
657 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
658 | ||
659 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
660 | { | |
661 | return mr->device->query_mr ? | |
662 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
663 | } | |
664 | EXPORT_SYMBOL(ib_query_mr); | |
665 | ||
666 | int ib_dereg_mr(struct ib_mr *mr) | |
667 | { | |
668 | struct ib_pd *pd; | |
669 | int ret; | |
670 | ||
671 | if (atomic_read(&mr->usecnt)) | |
672 | return -EBUSY; | |
673 | ||
674 | pd = mr->pd; | |
675 | ret = mr->device->dereg_mr(mr); | |
676 | if (!ret) | |
677 | atomic_dec(&pd->usecnt); | |
678 | ||
679 | return ret; | |
680 | } | |
681 | EXPORT_SYMBOL(ib_dereg_mr); | |
682 | ||
683 | /* Memory windows */ | |
684 | ||
685 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) | |
686 | { | |
687 | struct ib_mw *mw; | |
688 | ||
689 | if (!pd->device->alloc_mw) | |
690 | return ERR_PTR(-ENOSYS); | |
691 | ||
692 | mw = pd->device->alloc_mw(pd); | |
693 | if (!IS_ERR(mw)) { | |
b5e81bf5 RD |
694 | mw->device = pd->device; |
695 | mw->pd = pd; | |
696 | mw->uobject = NULL; | |
1da177e4 LT |
697 | atomic_inc(&pd->usecnt); |
698 | } | |
699 | ||
700 | return mw; | |
701 | } | |
702 | EXPORT_SYMBOL(ib_alloc_mw); | |
703 | ||
704 | int ib_dealloc_mw(struct ib_mw *mw) | |
705 | { | |
706 | struct ib_pd *pd; | |
707 | int ret; | |
708 | ||
709 | pd = mw->pd; | |
710 | ret = mw->device->dealloc_mw(mw); | |
711 | if (!ret) | |
712 | atomic_dec(&pd->usecnt); | |
713 | ||
714 | return ret; | |
715 | } | |
716 | EXPORT_SYMBOL(ib_dealloc_mw); | |
717 | ||
718 | /* "Fast" memory regions */ | |
719 | ||
720 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
721 | int mr_access_flags, | |
722 | struct ib_fmr_attr *fmr_attr) | |
723 | { | |
724 | struct ib_fmr *fmr; | |
725 | ||
726 | if (!pd->device->alloc_fmr) | |
727 | return ERR_PTR(-ENOSYS); | |
728 | ||
729 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
730 | if (!IS_ERR(fmr)) { | |
731 | fmr->device = pd->device; | |
732 | fmr->pd = pd; | |
733 | atomic_inc(&pd->usecnt); | |
734 | } | |
735 | ||
736 | return fmr; | |
737 | } | |
738 | EXPORT_SYMBOL(ib_alloc_fmr); | |
739 | ||
740 | int ib_unmap_fmr(struct list_head *fmr_list) | |
741 | { | |
742 | struct ib_fmr *fmr; | |
743 | ||
744 | if (list_empty(fmr_list)) | |
745 | return 0; | |
746 | ||
747 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
748 | return fmr->device->unmap_fmr(fmr_list); | |
749 | } | |
750 | EXPORT_SYMBOL(ib_unmap_fmr); | |
751 | ||
752 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
753 | { | |
754 | struct ib_pd *pd; | |
755 | int ret; | |
756 | ||
757 | pd = fmr->pd; | |
758 | ret = fmr->device->dealloc_fmr(fmr); | |
759 | if (!ret) | |
760 | atomic_dec(&pd->usecnt); | |
761 | ||
762 | return ret; | |
763 | } | |
764 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
765 | ||
766 | /* Multicast groups */ | |
767 | ||
768 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
769 | { | |
0c33aeed JM |
770 | if (!qp->device->attach_mcast) |
771 | return -ENOSYS; | |
772 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
773 | return -EINVAL; | |
774 | ||
775 | return qp->device->attach_mcast(qp, gid, lid); | |
1da177e4 LT |
776 | } |
777 | EXPORT_SYMBOL(ib_attach_mcast); | |
778 | ||
779 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
780 | { | |
0c33aeed JM |
781 | if (!qp->device->detach_mcast) |
782 | return -ENOSYS; | |
783 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
784 | return -EINVAL; | |
785 | ||
786 | return qp->device->detach_mcast(qp, gid, lid); | |
1da177e4 LT |
787 | } |
788 | EXPORT_SYMBOL(ib_detach_mcast); |