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IB/usnic: Add dependency on CONFIG_INET
[mirror_ubuntu-bionic-kernel.git] / drivers / infiniband / core / verbs.c
CommitLineData
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.
1da177e4
LT		 37 */
38
39#include <linux/errno.h>
40#include <linux/err.h>
b108d976 41#include <linux/export.h>
8c65b4a6 42#include <linux/string.h>
0e0ec7e0 43#include <linux/slab.h>
1da177e4 44
a4d61e84
RD		 45#include <rdma/ib_verbs.h>
46#include <rdma/ib_cache.h>
1da177e4 47
bf6a9e31
JM		 48int ib_rate_to_mult(enum ib_rate rate)
49{
50 switch (rate) {
51 case IB_RATE_2_5_GBPS: return 1;
52 case IB_RATE_5_GBPS: return 2;
53 case IB_RATE_10_GBPS: return 4;
54 case IB_RATE_20_GBPS: return 8;
55 case IB_RATE_30_GBPS: return 12;
56 case IB_RATE_40_GBPS: return 16;
57 case IB_RATE_60_GBPS: return 24;
58 case IB_RATE_80_GBPS: return 32;
59 case IB_RATE_120_GBPS: return 48;
60 default: return -1;
61 }
62}
63EXPORT_SYMBOL(ib_rate_to_mult);
64
65enum ib_rate mult_to_ib_rate(int mult)
66{
67 switch (mult) {
68 case 1: return IB_RATE_2_5_GBPS;
69 case 2: return IB_RATE_5_GBPS;
70 case 4: return IB_RATE_10_GBPS;
71 case 8: return IB_RATE_20_GBPS;
72 case 12: return IB_RATE_30_GBPS;
73 case 16: return IB_RATE_40_GBPS;
74 case 24: return IB_RATE_60_GBPS;
75 case 32: return IB_RATE_80_GBPS;
76 case 48: return IB_RATE_120_GBPS;
77 default: return IB_RATE_PORT_CURRENT;
78 }
79}
80EXPORT_SYMBOL(mult_to_ib_rate);
81
71eeba16
MA		 82int ib_rate_to_mbps(enum ib_rate rate)
83{
84 switch (rate) {
85 case IB_RATE_2_5_GBPS: return 2500;
86 case IB_RATE_5_GBPS: return 5000;
87 case IB_RATE_10_GBPS: return 10000;
88 case IB_RATE_20_GBPS: return 20000;
89 case IB_RATE_30_GBPS: return 30000;
90 case IB_RATE_40_GBPS: return 40000;
91 case IB_RATE_60_GBPS: return 60000;
92 case IB_RATE_80_GBPS: return 80000;
93 case IB_RATE_120_GBPS: return 120000;
94 case IB_RATE_14_GBPS: return 14062;
95 case IB_RATE_56_GBPS: return 56250;
96 case IB_RATE_112_GBPS: return 112500;
97 case IB_RATE_168_GBPS: return 168750;
98 case IB_RATE_25_GBPS: return 25781;
99 case IB_RATE_100_GBPS: return 103125;
100 case IB_RATE_200_GBPS: return 206250;
101 case IB_RATE_300_GBPS: return 309375;
102 default: return -1;
103 }
104}
105EXPORT_SYMBOL(ib_rate_to_mbps);
106
07ebafba
TT		 107enum rdma_transport_type
108rdma_node_get_transport(enum rdma_node_type node_type)
109{
110 switch (node_type) {
111 case RDMA_NODE_IB_CA:
112 case RDMA_NODE_IB_SWITCH:
113 case RDMA_NODE_IB_ROUTER:
114 return RDMA_TRANSPORT_IB;
115 case RDMA_NODE_RNIC:
116 return RDMA_TRANSPORT_IWARP;
180771a3 117 case RDMA_NODE_USNIC:
248567f7 118 return RDMA_TRANSPORT_USNIC_UDP;
07ebafba
TT		 119 default:
120 BUG();
121 return 0;
122 }
123}
124EXPORT_SYMBOL(rdma_node_get_transport);
125
a3f5adaf
EC		 126enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
127{
128 if (device->get_link_layer)
129 return device->get_link_layer(device, port_num);
130
131 switch (rdma_node_get_transport(device->node_type)) {
132 case RDMA_TRANSPORT_IB:
133 return IB_LINK_LAYER_INFINIBAND;
134 case RDMA_TRANSPORT_IWARP:
180771a3 135 case RDMA_TRANSPORT_USNIC:
248567f7 136 case RDMA_TRANSPORT_USNIC_UDP:
a3f5adaf
EC		 137 return IB_LINK_LAYER_ETHERNET;
138 default:
139 return IB_LINK_LAYER_UNSPECIFIED;
140 }
141}
142EXPORT_SYMBOL(rdma_port_get_link_layer);
143
1da177e4
LT		 144/* Protection domains */
145
146struct ib_pd *ib_alloc_pd(struct ib_device *device)
147{
148 struct ib_pd *pd;
149
b5e81bf5 150 pd = device->alloc_pd(device, NULL, NULL);
1da177e4
LT		 151
152 if (!IS_ERR(pd)) {
b5e81bf5
RD		 153 pd->device = device;
154 pd->uobject = NULL;
1da177e4
LT		 155 atomic_set(&pd->usecnt, 0);
156 }
157
158 return pd;
159}
160EXPORT_SYMBOL(ib_alloc_pd);
161
162int ib_dealloc_pd(struct ib_pd *pd)
163{
164 if (atomic_read(&pd->usecnt))
165 return -EBUSY;
166
167 return pd->device->dealloc_pd(pd);
168}
169EXPORT_SYMBOL(ib_dealloc_pd);
170
171/* Address handles */
172
173struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
174{
175 struct ib_ah *ah;
176
177 ah = pd->device->create_ah(pd, ah_attr);
178
179 if (!IS_ERR(ah)) {
b5e81bf5
RD		 180 ah->device = pd->device;
181 ah->pd = pd;
182 ah->uobject = NULL;
1da177e4
LT		 183 atomic_inc(&pd->usecnt);
184 }
185
186 return ah;
187}
188EXPORT_SYMBOL(ib_create_ah);
189
4e00d694
SH		 190int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
191 struct ib_grh *grh, struct ib_ah_attr *ah_attr)
513789ed 192{
513789ed
HR		 193 u32 flow_class;
194 u16 gid_index;
195 int ret;
196
4e00d694
SH		 197 memset(ah_attr, 0, sizeof *ah_attr);
198 ah_attr->dlid = wc->slid;
199 ah_attr->sl = wc->sl;
200 ah_attr->src_path_bits = wc->dlid_path_bits;
201 ah_attr->port_num = port_num;
513789ed
HR		 202
203 if (wc->wc_flags & IB_WC_GRH) {
4e00d694
SH		 204 ah_attr->ah_flags = IB_AH_GRH;
205 ah_attr->grh.dgid = grh->sgid;
513789ed 206
4e00d694 207 ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
513789ed
HR		 208 &gid_index);
209 if (ret)
4e00d694 210 return ret;
513789ed 211
4e00d694 212 ah_attr->grh.sgid_index = (u8) gid_index;
497677ab 213 flow_class = be32_to_cpu(grh->version_tclass_flow);
4e00d694 214 ah_attr->grh.flow_label = flow_class & 0xFFFFF;
47645d8d 215 ah_attr->grh.hop_limit = 0xFF;
4e00d694 216 ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
513789ed 217 }
4e00d694
SH		 218 return 0;
219}
220EXPORT_SYMBOL(ib_init_ah_from_wc);
221
222struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
223 struct ib_grh *grh, u8 port_num)
224{
225 struct ib_ah_attr ah_attr;
226 int ret;
227
228 ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
229 if (ret)
230 return ERR_PTR(ret);
513789ed
HR		 231
232 return ib_create_ah(pd, &ah_attr);
233}
234EXPORT_SYMBOL(ib_create_ah_from_wc);
235
1da177e4
LT		 236int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
237{
238 return ah->device->modify_ah ?
239 ah->device->modify_ah(ah, ah_attr) :
240 -ENOSYS;
241}
242EXPORT_SYMBOL(ib_modify_ah);
243
244int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
245{
246 return ah->device->query_ah ?
247 ah->device->query_ah(ah, ah_attr) :
248 -ENOSYS;
249}
250EXPORT_SYMBOL(ib_query_ah);
251
252int ib_destroy_ah(struct ib_ah *ah)
253{
254 struct ib_pd *pd;
255 int ret;
256
257 pd = ah->pd;
258 ret = ah->device->destroy_ah(ah);
259 if (!ret)
260 atomic_dec(&pd->usecnt);
261
262 return ret;
263}
264EXPORT_SYMBOL(ib_destroy_ah);
265
d41fcc67
RD		 266/* Shared receive queues */
267
268struct ib_srq *ib_create_srq(struct ib_pd *pd,
269 struct ib_srq_init_attr *srq_init_attr)
270{
271 struct ib_srq *srq;
272
273 if (!pd->device->create_srq)
274 return ERR_PTR(-ENOSYS);
275
276 srq = pd->device->create_srq(pd, srq_init_attr, NULL);
277
278 if (!IS_ERR(srq)) {
279 srq->device = pd->device;
280 srq->pd = pd;
281 srq->uobject = NULL;
282 srq->event_handler = srq_init_attr->event_handler;
283 srq->srq_context = srq_init_attr->srq_context;
96104eda 284 srq->srq_type = srq_init_attr->srq_type;
418d5130
SH		 285 if (srq->srq_type == IB_SRQT_XRC) {
286 srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
287 srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
288 atomic_inc(&srq->ext.xrc.xrcd->usecnt);
289 atomic_inc(&srq->ext.xrc.cq->usecnt);
290 }
d41fcc67
RD		 291 atomic_inc(&pd->usecnt);
292 atomic_set(&srq->usecnt, 0);
293 }
294
295 return srq;
296}
297EXPORT_SYMBOL(ib_create_srq);
298
299int ib_modify_srq(struct ib_srq *srq,
300 struct ib_srq_attr *srq_attr,
301 enum ib_srq_attr_mask srq_attr_mask)
302{
7ce5eacb
DB		 303 return srq->device->modify_srq ?
304 srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
305 -ENOSYS;
d41fcc67
RD		 306}
307EXPORT_SYMBOL(ib_modify_srq);
308
309int ib_query_srq(struct ib_srq *srq,
310 struct ib_srq_attr *srq_attr)
311{
312 return srq->device->query_srq ?
313 srq->device->query_srq(srq, srq_attr) : -ENOSYS;
314}
315EXPORT_SYMBOL(ib_query_srq);
316
317int ib_destroy_srq(struct ib_srq *srq)
318{
319 struct ib_pd *pd;
418d5130
SH		 320 enum ib_srq_type srq_type;
321 struct ib_xrcd *uninitialized_var(xrcd);
322 struct ib_cq *uninitialized_var(cq);
d41fcc67
RD		 323 int ret;
324
325 if (atomic_read(&srq->usecnt))
326 return -EBUSY;
327
328 pd = srq->pd;
418d5130
SH		 329 srq_type = srq->srq_type;
330 if (srq_type == IB_SRQT_XRC) {
331 xrcd = srq->ext.xrc.xrcd;
332 cq = srq->ext.xrc.cq;
333 }
d41fcc67
RD		 334
335 ret = srq->device->destroy_srq(srq);
418d5130 336 if (!ret) {
d41fcc67 337 atomic_dec(&pd->usecnt);
418d5130
SH		 338 if (srq_type == IB_SRQT_XRC) {
339 atomic_dec(&xrcd->usecnt);
340 atomic_dec(&cq->usecnt);
341 }
342 }
d41fcc67
RD		 343
344 return ret;
345}
346EXPORT_SYMBOL(ib_destroy_srq);
347
1da177e4
LT		 348/* Queue pairs */
349
0e0ec7e0
SH		 350static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
351{
352 struct ib_qp *qp = context;
73c40c61 353 unsigned long flags;
0e0ec7e0 354
73c40c61 355 spin_lock_irqsave(&qp->device->event_handler_lock, flags);
0e0ec7e0 356 list_for_each_entry(event->element.qp, &qp->open_list, open_list)
eec9e29f
SP		 357 if (event->element.qp->event_handler)
358 event->element.qp->event_handler(event, event->element.qp->qp_context);
73c40c61 359 spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
0e0ec7e0
SH		 360}
361
d3d72d90
SH		 362static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
363{
364 mutex_lock(&xrcd->tgt_qp_mutex);
365 list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
366 mutex_unlock(&xrcd->tgt_qp_mutex);
367}
368
0e0ec7e0
SH		 369static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
370 void (*event_handler)(struct ib_event *, void *),
371 void *qp_context)
d3d72d90 372{
0e0ec7e0
SH		 373 struct ib_qp *qp;
374 unsigned long flags;
375
376 qp = kzalloc(sizeof *qp, GFP_KERNEL);
377 if (!qp)
378 return ERR_PTR(-ENOMEM);
379
380 qp->real_qp = real_qp;
381 atomic_inc(&real_qp->usecnt);
382 qp->device = real_qp->device;
383 qp->event_handler = event_handler;
384 qp->qp_context = qp_context;
385 qp->qp_num = real_qp->qp_num;
386 qp->qp_type = real_qp->qp_type;
387
388 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
389 list_add(&qp->open_list, &real_qp->open_list);
390 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
391
392 return qp;
393}
394
395struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
396 struct ib_qp_open_attr *qp_open_attr)
397{
398 struct ib_qp *qp, *real_qp;
399
400 if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
401 return ERR_PTR(-EINVAL);
402
403 qp = ERR_PTR(-EINVAL);
d3d72d90 404 mutex_lock(&xrcd->tgt_qp_mutex);
0e0ec7e0
SH		 405 list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
406 if (real_qp->qp_num == qp_open_attr->qp_num) {
407 qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
408 qp_open_attr->qp_context);
409 break;
410 }
411 }
d3d72d90 412 mutex_unlock(&xrcd->tgt_qp_mutex);
0e0ec7e0 413 return qp;
d3d72d90 414}
0e0ec7e0 415EXPORT_SYMBOL(ib_open_qp);
d3d72d90 416
1da177e4
LT		 417struct ib_qp *ib_create_qp(struct ib_pd *pd,
418 struct ib_qp_init_attr *qp_init_attr)
419{
0e0ec7e0 420 struct ib_qp *qp, *real_qp;
b42b63cf 421 struct ib_device *device;
1da177e4 422
b42b63cf
SH		 423 device = pd ? pd->device : qp_init_attr->xrcd->device;
424 qp = device->create_qp(pd, qp_init_attr, NULL);
1da177e4
LT		 425
426 if (!IS_ERR(qp)) {
0e0ec7e0
SH		 427 qp->device = device;
428 qp->real_qp = qp;
429 qp->uobject = NULL;
430 qp->qp_type = qp_init_attr->qp_type;
b42b63cf 431
e47e321a 432 atomic_set(&qp->usecnt, 0);
b42b63cf 433 if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
0e0ec7e0
SH		 434 qp->event_handler = __ib_shared_qp_event_handler;
435 qp->qp_context = qp;
b42b63cf
SH		 436 qp->pd = NULL;
437 qp->send_cq = qp->recv_cq = NULL;
438 qp->srq = NULL;
439 qp->xrcd = qp_init_attr->xrcd;
440 atomic_inc(&qp_init_attr->xrcd->usecnt);
0e0ec7e0 441 INIT_LIST_HEAD(&qp->open_list);
0e0ec7e0
SH		 442
443 real_qp = qp;
444 qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
445 qp_init_attr->qp_context);
446 if (!IS_ERR(qp))
447 __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
448 else
449 real_qp->device->destroy_qp(real_qp);
b42b63cf 450 } else {
0e0ec7e0
SH		 451 qp->event_handler = qp_init_attr->event_handler;
452 qp->qp_context = qp_init_attr->qp_context;
b42b63cf
SH		 453 if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
454 qp->recv_cq = NULL;
455 qp->srq = NULL;
456 } else {
457 qp->recv_cq = qp_init_attr->recv_cq;
458 atomic_inc(&qp_init_attr->recv_cq->usecnt);
459 qp->srq = qp_init_attr->srq;
460 if (qp->srq)
461 atomic_inc(&qp_init_attr->srq->usecnt);
462 }
463
464 qp->pd = pd;
465 qp->send_cq = qp_init_attr->send_cq;
466 qp->xrcd = NULL;
467
468 atomic_inc(&pd->usecnt);
469 atomic_inc(&qp_init_attr->send_cq->usecnt);
470 }
1da177e4
LT		 471 }
472
473 return qp;
474}
475EXPORT_SYMBOL(ib_create_qp);
476
8a51866f
RD		 477static const struct {
478 int valid;
b42b63cf
SH		 479 enum ib_qp_attr_mask req_param[IB_QPT_MAX];
480 enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
8a51866f
RD		 481} qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
482 [IB_QPS_RESET] = {
483 [IB_QPS_RESET] = { .valid = 1 },
8a51866f
RD		 484 [IB_QPS_INIT] = {
485 .valid = 1,
486 .req_param = {
487 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
488 IB_QP_PORT |
489 IB_QP_QKEY),
c938a616 490 [IB_QPT_RAW_PACKET] = IB_QP_PORT,
8a51866f
RD		 491 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
492 IB_QP_PORT |
493 IB_QP_ACCESS_FLAGS),
494 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
495 IB_QP_PORT |
496 IB_QP_ACCESS_FLAGS),
b42b63cf
SH		 497 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
498 IB_QP_PORT |
499 IB_QP_ACCESS_FLAGS),
500 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
501 IB_QP_PORT |
502 IB_QP_ACCESS_FLAGS),
8a51866f
RD		 503 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
504 IB_QP_QKEY),
505 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
506 IB_QP_QKEY),
507 }
508 },
509 },
510 [IB_QPS_INIT] = {
511 [IB_QPS_RESET] = { .valid = 1 },
512 [IB_QPS_ERR] = { .valid = 1 },
513 [IB_QPS_INIT] = {
514 .valid = 1,
515 .opt_param = {
516 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
517 IB_QP_PORT |
518 IB_QP_QKEY),
519 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
520 IB_QP_PORT |
521 IB_QP_ACCESS_FLAGS),
522 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
523 IB_QP_PORT |
524 IB_QP_ACCESS_FLAGS),
b42b63cf
SH		 525 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
526 IB_QP_PORT |
527 IB_QP_ACCESS_FLAGS),
528 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
529 IB_QP_PORT |
530 IB_QP_ACCESS_FLAGS),
8a51866f
RD		 531 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
532 IB_QP_QKEY),
533 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
534 IB_QP_QKEY),
535 }
536 },
537 [IB_QPS_RTR] = {
538 .valid = 1,
539 .req_param = {
540 [IB_QPT_UC] = (IB_QP_AV |
541 IB_QP_PATH_MTU |
542 IB_QP_DEST_QPN |
543 IB_QP_RQ_PSN),
544 [IB_QPT_RC] = (IB_QP_AV |
545 IB_QP_PATH_MTU |
546 IB_QP_DEST_QPN |
547 IB_QP_RQ_PSN |
548 IB_QP_MAX_DEST_RD_ATOMIC |
549 IB_QP_MIN_RNR_TIMER),
b42b63cf
SH		 550 [IB_QPT_XRC_INI] = (IB_QP_AV |
551 IB_QP_PATH_MTU |
552 IB_QP_DEST_QPN |
553 IB_QP_RQ_PSN),
554 [IB_QPT_XRC_TGT] = (IB_QP_AV |
555 IB_QP_PATH_MTU |
556 IB_QP_DEST_QPN |
557 IB_QP_RQ_PSN |
558 IB_QP_MAX_DEST_RD_ATOMIC |
559 IB_QP_MIN_RNR_TIMER),
8a51866f
RD		 560 },
561 .opt_param = {
562 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
563 IB_QP_QKEY),
564 [IB_QPT_UC] = (IB_QP_ALT_PATH |
565 IB_QP_ACCESS_FLAGS |
566 IB_QP_PKEY_INDEX),
567 [IB_QPT_RC] = (IB_QP_ALT_PATH |
568 IB_QP_ACCESS_FLAGS |
569 IB_QP_PKEY_INDEX),
b42b63cf
SH		 570 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH |
571 IB_QP_ACCESS_FLAGS |
572 IB_QP_PKEY_INDEX),
573 [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH |
574 IB_QP_ACCESS_FLAGS |
575 IB_QP_PKEY_INDEX),
8a51866f
RD		 576 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
577 IB_QP_QKEY),
578 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
579 IB_QP_QKEY),
580 }
581 }
582 },
583 [IB_QPS_RTR] = {
584 [IB_QPS_RESET] = { .valid = 1 },
585 [IB_QPS_ERR] = { .valid = 1 },
586 [IB_QPS_RTS] = {
587 .valid = 1,
588 .req_param = {
589 [IB_QPT_UD] = IB_QP_SQ_PSN,
590 [IB_QPT_UC] = IB_QP_SQ_PSN,
591 [IB_QPT_RC] = (IB_QP_TIMEOUT |
592 IB_QP_RETRY_CNT |
593 IB_QP_RNR_RETRY |
594 IB_QP_SQ_PSN |
595 IB_QP_MAX_QP_RD_ATOMIC),
b42b63cf
SH		 596 [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT |
597 IB_QP_RETRY_CNT |
598 IB_QP_RNR_RETRY |
599 IB_QP_SQ_PSN |
600 IB_QP_MAX_QP_RD_ATOMIC),
601 [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
602 IB_QP_SQ_PSN),
8a51866f
RD		 603 [IB_QPT_SMI] = IB_QP_SQ_PSN,
604 [IB_QPT_GSI] = IB_QP_SQ_PSN,
605 },
606 .opt_param = {
607 [IB_QPT_UD] = (IB_QP_CUR_STATE |
608 IB_QP_QKEY),
609 [IB_QPT_UC] = (IB_QP_CUR_STATE |
610 IB_QP_ALT_PATH |
611 IB_QP_ACCESS_FLAGS |
612 IB_QP_PATH_MIG_STATE),
613 [IB_QPT_RC] = (IB_QP_CUR_STATE |
614 IB_QP_ALT_PATH |
615 IB_QP_ACCESS_FLAGS |
616 IB_QP_MIN_RNR_TIMER |
617 IB_QP_PATH_MIG_STATE),
b42b63cf
SH		 618 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
619 IB_QP_ALT_PATH |
620 IB_QP_ACCESS_FLAGS |
621 IB_QP_PATH_MIG_STATE),
622 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
623 IB_QP_ALT_PATH |
624 IB_QP_ACCESS_FLAGS |
625 IB_QP_MIN_RNR_TIMER |
626 IB_QP_PATH_MIG_STATE),
8a51866f
RD		 627 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
628 IB_QP_QKEY),
629 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
630 IB_QP_QKEY),
631 }
632 }
633 },
634 [IB_QPS_RTS] = {
635 [IB_QPS_RESET] = { .valid = 1 },
636 [IB_QPS_ERR] = { .valid = 1 },
637 [IB_QPS_RTS] = {
638 .valid = 1,
639 .opt_param = {
640 [IB_QPT_UD] = (IB_QP_CUR_STATE |
641 IB_QP_QKEY),
4546d31d
DB		 642 [IB_QPT_UC] = (IB_QP_CUR_STATE |
643 IB_QP_ACCESS_FLAGS |
8a51866f
RD		 644 IB_QP_ALT_PATH |
645 IB_QP_PATH_MIG_STATE),
4546d31d
DB		 646 [IB_QPT_RC] = (IB_QP_CUR_STATE |
647 IB_QP_ACCESS_FLAGS |
8a51866f
RD		 648 IB_QP_ALT_PATH |
649 IB_QP_PATH_MIG_STATE |
650 IB_QP_MIN_RNR_TIMER),
b42b63cf
SH		 651 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
652 IB_QP_ACCESS_FLAGS |
653 IB_QP_ALT_PATH |
654 IB_QP_PATH_MIG_STATE),
655 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
656 IB_QP_ACCESS_FLAGS |
657 IB_QP_ALT_PATH |
658 IB_QP_PATH_MIG_STATE |
659 IB_QP_MIN_RNR_TIMER),
8a51866f
RD		 660 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
661 IB_QP_QKEY),
662 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
663 IB_QP_QKEY),
664 }
665 },
666 [IB_QPS_SQD] = {
667 .valid = 1,
668 .opt_param = {
669 [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
670 [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
671 [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
b42b63cf
SH		 672 [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
673 [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
8a51866f
RD		 674 [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
675 [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
676 }
677 },
678 },
679 [IB_QPS_SQD] = {
680 [IB_QPS_RESET] = { .valid = 1 },
681 [IB_QPS_ERR] = { .valid = 1 },
682 [IB_QPS_RTS] = {
683 .valid = 1,
684 .opt_param = {
685 [IB_QPT_UD] = (IB_QP_CUR_STATE |
686 IB_QP_QKEY),
687 [IB_QPT_UC] = (IB_QP_CUR_STATE |
688 IB_QP_ALT_PATH |
689 IB_QP_ACCESS_FLAGS |
690 IB_QP_PATH_MIG_STATE),
691 [IB_QPT_RC] = (IB_QP_CUR_STATE |
692 IB_QP_ALT_PATH |
693 IB_QP_ACCESS_FLAGS |
694 IB_QP_MIN_RNR_TIMER |
695 IB_QP_PATH_MIG_STATE),
b42b63cf
SH		 696 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
697 IB_QP_ALT_PATH |
698 IB_QP_ACCESS_FLAGS |
699 IB_QP_PATH_MIG_STATE),
700 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
701 IB_QP_ALT_PATH |
702 IB_QP_ACCESS_FLAGS |
703 IB_QP_MIN_RNR_TIMER |
704 IB_QP_PATH_MIG_STATE),
8a51866f
RD		 705 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
706 IB_QP_QKEY),
707 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
708 IB_QP_QKEY),
709 }
710 },
711 [IB_QPS_SQD] = {
712 .valid = 1,
713 .opt_param = {
714 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
715 IB_QP_QKEY),
716 [IB_QPT_UC] = (IB_QP_AV |
8a51866f
RD		 717 IB_QP_ALT_PATH |
718 IB_QP_ACCESS_FLAGS |
719 IB_QP_PKEY_INDEX |
720 IB_QP_PATH_MIG_STATE),
721 [IB_QPT_RC] = (IB_QP_PORT |
722 IB_QP_AV |
723 IB_QP_TIMEOUT |
724 IB_QP_RETRY_CNT |
725 IB_QP_RNR_RETRY |
726 IB_QP_MAX_QP_RD_ATOMIC |
727 IB_QP_MAX_DEST_RD_ATOMIC |
8a51866f
RD		 728 IB_QP_ALT_PATH |
729 IB_QP_ACCESS_FLAGS |
730 IB_QP_PKEY_INDEX |
731 IB_QP_MIN_RNR_TIMER |
732 IB_QP_PATH_MIG_STATE),
b42b63cf
SH		 733 [IB_QPT_XRC_INI] = (IB_QP_PORT |
734 IB_QP_AV |
735 IB_QP_TIMEOUT |
736 IB_QP_RETRY_CNT |
737 IB_QP_RNR_RETRY |
738 IB_QP_MAX_QP_RD_ATOMIC |
739 IB_QP_ALT_PATH |
740 IB_QP_ACCESS_FLAGS |
741 IB_QP_PKEY_INDEX |
742 IB_QP_PATH_MIG_STATE),
743 [IB_QPT_XRC_TGT] = (IB_QP_PORT |
744 IB_QP_AV |
745 IB_QP_TIMEOUT |
746 IB_QP_MAX_DEST_RD_ATOMIC |
747 IB_QP_ALT_PATH |
748 IB_QP_ACCESS_FLAGS |
749 IB_QP_PKEY_INDEX |
750 IB_QP_MIN_RNR_TIMER |
751 IB_QP_PATH_MIG_STATE),
8a51866f
RD		 752 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
753 IB_QP_QKEY),
754 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
755 IB_QP_QKEY),
756 }
757 }
758 },
759 [IB_QPS_SQE] = {
760 [IB_QPS_RESET] = { .valid = 1 },
761 [IB_QPS_ERR] = { .valid = 1 },
762 [IB_QPS_RTS] = {
763 .valid = 1,
764 .opt_param = {
765 [IB_QPT_UD] = (IB_QP_CUR_STATE |
766 IB_QP_QKEY),
767 [IB_QPT_UC] = (IB_QP_CUR_STATE |
768 IB_QP_ACCESS_FLAGS),
769 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
770 IB_QP_QKEY),
771 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
772 IB_QP_QKEY),
773 }
774 }
775 },
776 [IB_QPS_ERR] = {
777 [IB_QPS_RESET] = { .valid = 1 },
778 [IB_QPS_ERR] = { .valid = 1 }
779 }
780};
781
782int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
783 enum ib_qp_type type, enum ib_qp_attr_mask mask)
784{
785 enum ib_qp_attr_mask req_param, opt_param;
786
787 if (cur_state < 0 || cur_state > IB_QPS_ERR ||
788 next_state < 0 || next_state > IB_QPS_ERR)
789 return 0;
790
791 if (mask & IB_QP_CUR_STATE &&
792 cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
793 cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
794 return 0;
795
796 if (!qp_state_table[cur_state][next_state].valid)
797 return 0;
798
799 req_param = qp_state_table[cur_state][next_state].req_param[type];
800 opt_param = qp_state_table[cur_state][next_state].opt_param[type];
801
802 if ((mask & req_param) != req_param)
803 return 0;
804
805 if (mask & ~(req_param | opt_param | IB_QP_STATE))
806 return 0;
807
808 return 1;
809}
810EXPORT_SYMBOL(ib_modify_qp_is_ok);
811
1da177e4
LT		 812int ib_modify_qp(struct ib_qp *qp,
813 struct ib_qp_attr *qp_attr,
814 int qp_attr_mask)
815{
0e0ec7e0 816 return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
1da177e4
LT		 817}
818EXPORT_SYMBOL(ib_modify_qp);
819
820int ib_query_qp(struct ib_qp *qp,
821 struct ib_qp_attr *qp_attr,
822 int qp_attr_mask,
823 struct ib_qp_init_attr *qp_init_attr)
824{
825 return qp->device->query_qp ?
0e0ec7e0 826 qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
1da177e4
LT		 827 -ENOSYS;
828}
829EXPORT_SYMBOL(ib_query_qp);
830
0e0ec7e0
SH		 831int ib_close_qp(struct ib_qp *qp)
832{
833 struct ib_qp *real_qp;
834 unsigned long flags;
835
836 real_qp = qp->real_qp;
837 if (real_qp == qp)
838 return -EINVAL;
839
840 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
841 list_del(&qp->open_list);
842 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
843
844 atomic_dec(&real_qp->usecnt);
845 kfree(qp);
846
847 return 0;
848}
849EXPORT_SYMBOL(ib_close_qp);
850
851static int __ib_destroy_shared_qp(struct ib_qp *qp)
852{
853 struct ib_xrcd *xrcd;
854 struct ib_qp *real_qp;
855 int ret;
856
857 real_qp = qp->real_qp;
858 xrcd = real_qp->xrcd;
859
860 mutex_lock(&xrcd->tgt_qp_mutex);
861 ib_close_qp(qp);
862 if (atomic_read(&real_qp->usecnt) == 0)
863 list_del(&real_qp->xrcd_list);
864 else
865 real_qp = NULL;
866 mutex_unlock(&xrcd->tgt_qp_mutex);
867
868 if (real_qp) {
869 ret = ib_destroy_qp(real_qp);
870 if (!ret)
871 atomic_dec(&xrcd->usecnt);
872 else
873 __ib_insert_xrcd_qp(xrcd, real_qp);
874 }
875
876 return 0;
877}
878
1da177e4
LT		 879int ib_destroy_qp(struct ib_qp *qp)
880{
881 struct ib_pd *pd;
882 struct ib_cq *scq, *rcq;
883 struct ib_srq *srq;
884 int ret;
885
0e0ec7e0
SH		 886 if (atomic_read(&qp->usecnt))
887 return -EBUSY;
888
889 if (qp->real_qp != qp)
890 return __ib_destroy_shared_qp(qp);
891
b42b63cf
SH		 892 pd = qp->pd;
893 scq = qp->send_cq;
894 rcq = qp->recv_cq;
895 srq = qp->srq;
1da177e4
LT		 896
897 ret = qp->device->destroy_qp(qp);
898 if (!ret) {
b42b63cf
SH		 899 if (pd)
900 atomic_dec(&pd->usecnt);
901 if (scq)
902 atomic_dec(&scq->usecnt);
903 if (rcq)
904 atomic_dec(&rcq->usecnt);
1da177e4
LT		 905 if (srq)
906 atomic_dec(&srq->usecnt);
907 }
908
909 return ret;
910}
911EXPORT_SYMBOL(ib_destroy_qp);
912
913/* Completion queues */
914
915struct ib_cq *ib_create_cq(struct ib_device *device,
916 ib_comp_handler comp_handler,
917 void (*event_handler)(struct ib_event *, void *),
f4fd0b22 918 void *cq_context, int cqe, int comp_vector)
1da177e4
LT		 919{
920 struct ib_cq *cq;
921
f4fd0b22 922 cq = device->create_cq(device, cqe, comp_vector, NULL, NULL);
1da177e4
LT		 923
924 if (!IS_ERR(cq)) {
925 cq->device = device;
b5e81bf5 926 cq->uobject = NULL;
1da177e4
LT		 927 cq->comp_handler = comp_handler;
928 cq->event_handler = event_handler;
929 cq->cq_context = cq_context;
930 atomic_set(&cq->usecnt, 0);
931 }
932
933 return cq;
934}
935EXPORT_SYMBOL(ib_create_cq);
936
2dd57162
EC		 937int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
938{
939 return cq->device->modify_cq ?
940 cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
941}
942EXPORT_SYMBOL(ib_modify_cq);
943
1da177e4
LT		 944int ib_destroy_cq(struct ib_cq *cq)
945{
946 if (atomic_read(&cq->usecnt))
947 return -EBUSY;
948
949 return cq->device->destroy_cq(cq);
950}
951EXPORT_SYMBOL(ib_destroy_cq);
952
a74cd4af 953int ib_resize_cq(struct ib_cq *cq, int cqe)
1da177e4 954{
40de2e54 955 return cq->device->resize_cq ?
33b9b3ee 956 cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
1da177e4
LT		 957}
958EXPORT_SYMBOL(ib_resize_cq);
959
960/* Memory regions */
961
962struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
963{
964 struct ib_mr *mr;
1c636f80
EC		 965 int err;
966
967 err = ib_check_mr_access(mr_access_flags);
968 if (err)
969 return ERR_PTR(err);
1da177e4
LT		 970
971 mr = pd->device->get_dma_mr(pd, mr_access_flags);
972
973 if (!IS_ERR(mr)) {
b5e81bf5
RD		 974 mr->device = pd->device;
975 mr->pd = pd;
976 mr->uobject = NULL;
1da177e4
LT		 977 atomic_inc(&pd->usecnt);
978 atomic_set(&mr->usecnt, 0);
979 }
980
981 return mr;
982}
983EXPORT_SYMBOL(ib_get_dma_mr);
984
985struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
986 struct ib_phys_buf *phys_buf_array,
987 int num_phys_buf,
988 int mr_access_flags,
989 u64 *iova_start)
990{
991 struct ib_mr *mr;
1c636f80
EC		 992 int err;
993
994 err = ib_check_mr_access(mr_access_flags);
995 if (err)
996 return ERR_PTR(err);
1da177e4 997
7ce5eacb
DB		 998 if (!pd->device->reg_phys_mr)
999 return ERR_PTR(-ENOSYS);
1000
1da177e4
LT		 1001 mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
1002 mr_access_flags, iova_start);
1003
1004 if (!IS_ERR(mr)) {
b5e81bf5
RD		 1005 mr->device = pd->device;
1006 mr->pd = pd;
1007 mr->uobject = NULL;
1da177e4
LT		 1008 atomic_inc(&pd->usecnt);
1009 atomic_set(&mr->usecnt, 0);
1010 }
1011
1012 return mr;
1013}
1014EXPORT_SYMBOL(ib_reg_phys_mr);
1015
1016int ib_rereg_phys_mr(struct ib_mr *mr,
1017 int mr_rereg_mask,
1018 struct ib_pd *pd,
1019 struct ib_phys_buf *phys_buf_array,
1020 int num_phys_buf,
1021 int mr_access_flags,
1022 u64 *iova_start)
1023{
1024 struct ib_pd *old_pd;
1025 int ret;
1026
1c636f80
EC		 1027 ret = ib_check_mr_access(mr_access_flags);
1028 if (ret)
1029 return ret;
1030
1da177e4
LT		 1031 if (!mr->device->rereg_phys_mr)
1032 return -ENOSYS;
1033
1034 if (atomic_read(&mr->usecnt))
1035 return -EBUSY;
1036
1037 old_pd = mr->pd;
1038
1039 ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
1040 phys_buf_array, num_phys_buf,
1041 mr_access_flags, iova_start);
1042
1043 if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
1044 atomic_dec(&old_pd->usecnt);
1045 atomic_inc(&pd->usecnt);
1046 }
1047
1048 return ret;
1049}
1050EXPORT_SYMBOL(ib_rereg_phys_mr);
1051
1052int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
1053{
1054 return mr->device->query_mr ?
1055 mr->device->query_mr(mr, mr_attr) : -ENOSYS;
1056}
1057EXPORT_SYMBOL(ib_query_mr);
1058
1059int ib_dereg_mr(struct ib_mr *mr)
1060{
1061 struct ib_pd *pd;
1062 int ret;
1063
1064 if (atomic_read(&mr->usecnt))
1065 return -EBUSY;
1066
1067 pd = mr->pd;
1068 ret = mr->device->dereg_mr(mr);
1069 if (!ret)
1070 atomic_dec(&pd->usecnt);
1071
1072 return ret;
1073}
1074EXPORT_SYMBOL(ib_dereg_mr);
1075
00f7ec36
SW		 1076struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
1077{
1078 struct ib_mr *mr;
1079
1080 if (!pd->device->alloc_fast_reg_mr)
1081 return ERR_PTR(-ENOSYS);
1082
1083 mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len);
1084
1085 if (!IS_ERR(mr)) {
1086 mr->device = pd->device;
1087 mr->pd = pd;
1088 mr->uobject = NULL;
1089 atomic_inc(&pd->usecnt);
1090 atomic_set(&mr->usecnt, 0);
1091 }
1092
1093 return mr;
1094}
1095EXPORT_SYMBOL(ib_alloc_fast_reg_mr);
1096
1097struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
1098 int max_page_list_len)
1099{
1100 struct ib_fast_reg_page_list *page_list;
1101
1102 if (!device->alloc_fast_reg_page_list)
1103 return ERR_PTR(-ENOSYS);
1104
1105 page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
1106
1107 if (!IS_ERR(page_list)) {
1108 page_list->device = device;
1109 page_list->max_page_list_len = max_page_list_len;
1110 }
1111
1112 return page_list;
1113}
1114EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
1115
1116void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
1117{
1118 page_list->device->free_fast_reg_page_list(page_list);
1119}
1120EXPORT_SYMBOL(ib_free_fast_reg_page_list);
1121
1da177e4
LT		 1122/* Memory windows */
1123
7083e42e 1124struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
1da177e4
LT		 1125{
1126 struct ib_mw *mw;
1127
1128 if (!pd->device->alloc_mw)
1129 return ERR_PTR(-ENOSYS);
1130
7083e42e 1131 mw = pd->device->alloc_mw(pd, type);
1da177e4 1132 if (!IS_ERR(mw)) {
b5e81bf5
RD		 1133 mw->device = pd->device;
1134 mw->pd = pd;
1135 mw->uobject = NULL;
7083e42e 1136 mw->type = type;
1da177e4
LT		 1137 atomic_inc(&pd->usecnt);
1138 }
1139
1140 return mw;
1141}
1142EXPORT_SYMBOL(ib_alloc_mw);
1143
1144int ib_dealloc_mw(struct ib_mw *mw)
1145{
1146 struct ib_pd *pd;
1147 int ret;
1148
1149 pd = mw->pd;
1150 ret = mw->device->dealloc_mw(mw);
1151 if (!ret)
1152 atomic_dec(&pd->usecnt);
1153
1154 return ret;
1155}
1156EXPORT_SYMBOL(ib_dealloc_mw);
1157
1158/* "Fast" memory regions */
1159
1160struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1161 int mr_access_flags,
1162 struct ib_fmr_attr *fmr_attr)
1163{
1164 struct ib_fmr *fmr;
1165
1166 if (!pd->device->alloc_fmr)
1167 return ERR_PTR(-ENOSYS);
1168
1169 fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
1170 if (!IS_ERR(fmr)) {
1171 fmr->device = pd->device;
1172 fmr->pd = pd;
1173 atomic_inc(&pd->usecnt);
1174 }
1175
1176 return fmr;
1177}
1178EXPORT_SYMBOL(ib_alloc_fmr);
1179
1180int ib_unmap_fmr(struct list_head *fmr_list)
1181{
1182 struct ib_fmr *fmr;
1183
1184 if (list_empty(fmr_list))
1185 return 0;
1186
1187 fmr = list_entry(fmr_list->next, struct ib_fmr, list);
1188 return fmr->device->unmap_fmr(fmr_list);
1189}
1190EXPORT_SYMBOL(ib_unmap_fmr);
1191
1192int ib_dealloc_fmr(struct ib_fmr *fmr)
1193{
1194 struct ib_pd *pd;
1195 int ret;
1196
1197 pd = fmr->pd;
1198 ret = fmr->device->dealloc_fmr(fmr);
1199 if (!ret)
1200 atomic_dec(&pd->usecnt);
1201
1202 return ret;
1203}
1204EXPORT_SYMBOL(ib_dealloc_fmr);
1205
1206/* Multicast groups */
1207
1208int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1209{
c3bccbfb
OG		 1210 int ret;
1211
0c33aeed
JM		 1212 if (!qp->device->attach_mcast)
1213 return -ENOSYS;
1214 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1215 return -EINVAL;
1216
c3bccbfb
OG		 1217 ret = qp->device->attach_mcast(qp, gid, lid);
1218 if (!ret)
1219 atomic_inc(&qp->usecnt);
1220 return ret;
1da177e4
LT		 1221}
1222EXPORT_SYMBOL(ib_attach_mcast);
1223
1224int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1225{
c3bccbfb
OG		 1226 int ret;
1227
0c33aeed
JM		 1228 if (!qp->device->detach_mcast)
1229 return -ENOSYS;
1230 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1231 return -EINVAL;
1232
c3bccbfb
OG		 1233 ret = qp->device->detach_mcast(qp, gid, lid);
1234 if (!ret)
1235 atomic_dec(&qp->usecnt);
1236 return ret;
1da177e4
LT		 1237}
1238EXPORT_SYMBOL(ib_detach_mcast);
59991f94
SH		 1239
1240struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
1241{
1242 struct ib_xrcd *xrcd;
1243
1244 if (!device->alloc_xrcd)
1245 return ERR_PTR(-ENOSYS);
1246
1247 xrcd = device->alloc_xrcd(device, NULL, NULL);
1248 if (!IS_ERR(xrcd)) {
1249 xrcd->device = device;
53d0bd1e 1250 xrcd->inode = NULL;
59991f94 1251 atomic_set(&xrcd->usecnt, 0);
d3d72d90
SH		 1252 mutex_init(&xrcd->tgt_qp_mutex);
1253 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
59991f94
SH		 1254 }
1255
1256 return xrcd;
1257}
1258EXPORT_SYMBOL(ib_alloc_xrcd);
1259
1260int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1261{
d3d72d90
SH		 1262 struct ib_qp *qp;
1263 int ret;
1264
59991f94
SH		 1265 if (atomic_read(&xrcd->usecnt))
1266 return -EBUSY;
1267
d3d72d90
SH		 1268 while (!list_empty(&xrcd->tgt_qp_list)) {
1269 qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
1270 ret = ib_destroy_qp(qp);
1271 if (ret)
1272 return ret;
1273 }
1274
59991f94
SH		 1275 return xrcd->device->dealloc_xrcd(xrcd);
1276}
1277EXPORT_SYMBOL(ib_dealloc_xrcd);
319a441d
HHZ		 1278
1279struct ib_flow *ib_create_flow(struct ib_qp *qp,
1280 struct ib_flow_attr *flow_attr,
1281 int domain)
1282{
1283 struct ib_flow *flow_id;
1284 if (!qp->device->create_flow)
1285 return ERR_PTR(-ENOSYS);
1286
1287 flow_id = qp->device->create_flow(qp, flow_attr, domain);
1288 if (!IS_ERR(flow_id))
1289 atomic_inc(&qp->usecnt);
1290 return flow_id;
1291}
1292EXPORT_SYMBOL(ib_create_flow);
1293
1294int ib_destroy_flow(struct ib_flow *flow_id)
1295{
1296 int err;
1297 struct ib_qp *qp = flow_id->qp;
1298
1299 err = qp->device->destroy_flow(flow_id);
1300 if (!err)
1301 atomic_dec(&qp->usecnt);
1302 return err;
1303}
1304EXPORT_SYMBOL(ib_destroy_flow);
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