projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
IB/core: Add Cisco usNIC rdma node and transport types
[deliverable/linux.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
UM		 117 case RDMA_NODE_USNIC:
118 return RDMA_TRANSPORT_USNIC;
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:
a3f5adaf
EC		 136 return IB_LINK_LAYER_ETHERNET;
137 default:
138 return IB_LINK_LAYER_UNSPECIFIED;
139 }
140}
141EXPORT_SYMBOL(rdma_port_get_link_layer);
142
1da177e4
LT		 143/* Protection domains */
144
145struct ib_pd *ib_alloc_pd(struct ib_device *device)
146{
147 struct ib_pd *pd;
148
b5e81bf5 149 pd = device->alloc_pd(device, NULL, NULL);
1da177e4
LT		 150
151 if (!IS_ERR(pd)) {
b5e81bf5
RD		 152 pd->device = device;
153 pd->uobject = NULL;
1da177e4
LT		 154 atomic_set(&pd->usecnt, 0);
155 }
156
157 return pd;
158}
159EXPORT_SYMBOL(ib_alloc_pd);
160
161int ib_dealloc_pd(struct ib_pd *pd)
162{
163 if (atomic_read(&pd->usecnt))
164 return -EBUSY;
165
166 return pd->device->dealloc_pd(pd);
167}
168EXPORT_SYMBOL(ib_dealloc_pd);
169
170/* Address handles */
171
172struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
173{
174 struct ib_ah *ah;
175
176 ah = pd->device->create_ah(pd, ah_attr);
177
178 if (!IS_ERR(ah)) {
b5e81bf5
RD		 179 ah->device = pd->device;
180 ah->pd = pd;
181 ah->uobject = NULL;
1da177e4
LT		 182 atomic_inc(&pd->usecnt);
183 }
184
185 return ah;
186}
187EXPORT_SYMBOL(ib_create_ah);
188
4e00d694
SH		 189int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
190 struct ib_grh *grh, struct ib_ah_attr *ah_attr)
513789ed 191{
513789ed
HR		 192 u32 flow_class;
193 u16 gid_index;
194 int ret;
195
4e00d694
SH		 196 memset(ah_attr, 0, sizeof *ah_attr);
197 ah_attr->dlid = wc->slid;
198 ah_attr->sl = wc->sl;
199 ah_attr->src_path_bits = wc->dlid_path_bits;
200 ah_attr->port_num = port_num;
513789ed
HR		 201
202 if (wc->wc_flags & IB_WC_GRH) {
4e00d694
SH		 203 ah_attr->ah_flags = IB_AH_GRH;
204 ah_attr->grh.dgid = grh->sgid;
513789ed 205
4e00d694 206 ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
513789ed
HR		 207 &gid_index);
208 if (ret)
4e00d694 209 return ret;
513789ed 210
4e00d694 211 ah_attr->grh.sgid_index = (u8) gid_index;
497677ab 212 flow_class = be32_to_cpu(grh->version_tclass_flow);
4e00d694 213 ah_attr->grh.flow_label = flow_class & 0xFFFFF;
47645d8d 214 ah_attr->grh.hop_limit = 0xFF;
4e00d694 215 ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
513789ed 216 }
4e00d694
SH		 217 return 0;
218}
219EXPORT_SYMBOL(ib_init_ah_from_wc);
220
221struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
222 struct ib_grh *grh, u8 port_num)
223{
224 struct ib_ah_attr ah_attr;
225 int ret;
226
227 ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
228 if (ret)
229 return ERR_PTR(ret);
513789ed
HR		 230
231 return ib_create_ah(pd, &ah_attr);
232}
233EXPORT_SYMBOL(ib_create_ah_from_wc);
234
1da177e4
LT		 235int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
236{
237 return ah->device->modify_ah ?
238 ah->device->modify_ah(ah, ah_attr) :
239 -ENOSYS;
240}
241EXPORT_SYMBOL(ib_modify_ah);
242
243int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
244{
245 return ah->device->query_ah ?
246 ah->device->query_ah(ah, ah_attr) :
247 -ENOSYS;
248}
249EXPORT_SYMBOL(ib_query_ah);
250
251int ib_destroy_ah(struct ib_ah *ah)
252{
253 struct ib_pd *pd;
254 int ret;
255
256 pd = ah->pd;
257 ret = ah->device->destroy_ah(ah);
258 if (!ret)
259 atomic_dec(&pd->usecnt);
260
261 return ret;
262}
263EXPORT_SYMBOL(ib_destroy_ah);
264
d41fcc67
RD		 265/* Shared receive queues */
266
267struct ib_srq *ib_create_srq(struct ib_pd *pd,
268 struct ib_srq_init_attr *srq_init_attr)
269{
270 struct ib_srq *srq;
271
272 if (!pd->device->create_srq)
273 return ERR_PTR(-ENOSYS);
274
275 srq = pd->device->create_srq(pd, srq_init_attr, NULL);
276
277 if (!IS_ERR(srq)) {
278 srq->device = pd->device;
279 srq->pd = pd;
280 srq->uobject = NULL;
281 srq->event_handler = srq_init_attr->event_handler;
282 srq->srq_context = srq_init_attr->srq_context;
96104eda 283 srq->srq_type = srq_init_attr->srq_type;
418d5130
SH		 284 if (srq->srq_type == IB_SRQT_XRC) {
285 srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
286 srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
287 atomic_inc(&srq->ext.xrc.xrcd->usecnt);
288 atomic_inc(&srq->ext.xrc.cq->usecnt);
289 }
d41fcc67
RD		 290 atomic_inc(&pd->usecnt);
291 atomic_set(&srq->usecnt, 0);
292 }
293
294 return srq;
295}
296EXPORT_SYMBOL(ib_create_srq);
297
298int ib_modify_srq(struct ib_srq *srq,
299 struct ib_srq_attr *srq_attr,
300 enum ib_srq_attr_mask srq_attr_mask)
301{
7ce5eacb
DB		 302 return srq->device->modify_srq ?
303 srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
304 -ENOSYS;
d41fcc67
RD		 305}
306EXPORT_SYMBOL(ib_modify_srq);
307
308int ib_query_srq(struct ib_srq *srq,
309 struct ib_srq_attr *srq_attr)
310{
311 return srq->device->query_srq ?
312 srq->device->query_srq(srq, srq_attr) : -ENOSYS;
313}
314EXPORT_SYMBOL(ib_query_srq);
315
316int ib_destroy_srq(struct ib_srq *srq)
317{
318 struct ib_pd *pd;
418d5130
SH		 319 enum ib_srq_type srq_type;
320 struct ib_xrcd *uninitialized_var(xrcd);
321 struct ib_cq *uninitialized_var(cq);
d41fcc67
RD		 322 int ret;
323
324 if (atomic_read(&srq->usecnt))
325 return -EBUSY;
326
327 pd = srq->pd;
418d5130
SH		 328 srq_type = srq->srq_type;
329 if (srq_type == IB_SRQT_XRC) {
330 xrcd = srq->ext.xrc.xrcd;
331 cq = srq->ext.xrc.cq;
332 }
d41fcc67
RD		 333
334 ret = srq->device->destroy_srq(srq);
418d5130 335 if (!ret) {
d41fcc67 336 atomic_dec(&pd->usecnt);
418d5130
SH		 337 if (srq_type == IB_SRQT_XRC) {
338 atomic_dec(&xrcd->usecnt);
339 atomic_dec(&cq->usecnt);
340 }
341 }
d41fcc67
RD		 342
343 return ret;
344}
345EXPORT_SYMBOL(ib_destroy_srq);
346
1da177e4
LT		 347/* Queue pairs */
348
0e0ec7e0
SH		 349static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
350{
351 struct ib_qp *qp = context;
73c40c61 352 unsigned long flags;
0e0ec7e0 353
73c40c61 354 spin_lock_irqsave(&qp->device->event_handler_lock, flags);
0e0ec7e0 355 list_for_each_entry(event->element.qp, &qp->open_list, open_list)
eec9e29f
SP		 356 if (event->element.qp->event_handler)
357 event->element.qp->event_handler(event, event->element.qp->qp_context);
73c40c61 358 spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
0e0ec7e0
SH		 359}
360
d3d72d90
SH		 361static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
362{
363 mutex_lock(&xrcd->tgt_qp_mutex);
364 list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
365 mutex_unlock(&xrcd->tgt_qp_mutex);
366}
367
0e0ec7e0
SH		 368static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
369 void (*event_handler)(struct ib_event *, void *),
370 void *qp_context)
d3d72d90 371{
0e0ec7e0
SH		 372 struct ib_qp *qp;
373 unsigned long flags;
374
375 qp = kzalloc(sizeof *qp, GFP_KERNEL);
376 if (!qp)
377 return ERR_PTR(-ENOMEM);
378
379 qp->real_qp = real_qp;
380 atomic_inc(&real_qp->usecnt);
381 qp->device = real_qp->device;
382 qp->event_handler = event_handler;
383 qp->qp_context = qp_context;
384 qp->qp_num = real_qp->qp_num;
385 qp->qp_type = real_qp->qp_type;
386
387 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
388 list_add(&qp->open_list, &real_qp->open_list);
389 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
390
391 return qp;
392}
393
394struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
395 struct ib_qp_open_attr *qp_open_attr)
396{
397 struct ib_qp *qp, *real_qp;
398
399 if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
400 return ERR_PTR(-EINVAL);
401
402 qp = ERR_PTR(-EINVAL);
d3d72d90 403 mutex_lock(&xrcd->tgt_qp_mutex);
0e0ec7e0
SH		 404 list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
405 if (real_qp->qp_num == qp_open_attr->qp_num) {
406 qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
407 qp_open_attr->qp_context);
408 break;
409 }
410 }
d3d72d90 411 mutex_unlock(&xrcd->tgt_qp_mutex);
0e0ec7e0 412 return qp;
d3d72d90 413}
0e0ec7e0 414EXPORT_SYMBOL(ib_open_qp);
d3d72d90 415
1da177e4
LT		 416struct ib_qp *ib_create_qp(struct ib_pd *pd,
417 struct ib_qp_init_attr *qp_init_attr)
418{
0e0ec7e0 419 struct ib_qp *qp, *real_qp;
b42b63cf 420 struct ib_device *device;
1da177e4 421
b42b63cf
SH		 422 device = pd ? pd->device : qp_init_attr->xrcd->device;
423 qp = device->create_qp(pd, qp_init_attr, NULL);
1da177e4
LT		 424
425 if (!IS_ERR(qp)) {
0e0ec7e0
SH		 426 qp->device = device;
427 qp->real_qp = qp;
428 qp->uobject = NULL;
429 qp->qp_type = qp_init_attr->qp_type;
b42b63cf 430
e47e321a 431 atomic_set(&qp->usecnt, 0);
b42b63cf 432 if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
0e0ec7e0
SH		 433 qp->event_handler = __ib_shared_qp_event_handler;
434 qp->qp_context = qp;
b42b63cf
SH		 435 qp->pd = NULL;
436 qp->send_cq = qp->recv_cq = NULL;
437 qp->srq = NULL;
438 qp->xrcd = qp_init_attr->xrcd;
439 atomic_inc(&qp_init_attr->xrcd->usecnt);
0e0ec7e0 440 INIT_LIST_HEAD(&qp->open_list);
0e0ec7e0
SH		 441
442 real_qp = qp;
443 qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
444 qp_init_attr->qp_context);
445 if (!IS_ERR(qp))
446 __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
447 else
448 real_qp->device->destroy_qp(real_qp);
b42b63cf 449 } else {
0e0ec7e0
SH		 450 qp->event_handler = qp_init_attr->event_handler;
451 qp->qp_context = qp_init_attr->qp_context;
b42b63cf
SH		 452 if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
453 qp->recv_cq = NULL;
454 qp->srq = NULL;
455 } else {
456 qp->recv_cq = qp_init_attr->recv_cq;
457 atomic_inc(&qp_init_attr->recv_cq->usecnt);
458 qp->srq = qp_init_attr->srq;
459 if (qp->srq)
460 atomic_inc(&qp_init_attr->srq->usecnt);
461 }
462
463 qp->pd = pd;
464 qp->send_cq = qp_init_attr->send_cq;
465 qp->xrcd = NULL;
466
467 atomic_inc(&pd->usecnt);
468 atomic_inc(&qp_init_attr->send_cq->usecnt);
469 }
1da177e4
LT		 470 }
471
472 return qp;
473}
474EXPORT_SYMBOL(ib_create_qp);
475
8a51866f
RD		 476static const struct {
477 int valid;
b42b63cf
SH		 478 enum ib_qp_attr_mask req_param[IB_QPT_MAX];
479 enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
8a51866f
RD		 480} qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
481 [IB_QPS_RESET] = {
482 [IB_QPS_RESET] = { .valid = 1 },
8a51866f
RD		 483 [IB_QPS_INIT] = {
484 .valid = 1,
485 .req_param = {
486 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
487 IB_QP_PORT |
488 IB_QP_QKEY),
c938a616 489 [IB_QPT_RAW_PACKET] = IB_QP_PORT,
8a51866f
RD		 490 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
491 IB_QP_PORT |
492 IB_QP_ACCESS_FLAGS),
493 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
494 IB_QP_PORT |
495 IB_QP_ACCESS_FLAGS),
b42b63cf
SH		 496 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
497 IB_QP_PORT |
498 IB_QP_ACCESS_FLAGS),
499 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
500 IB_QP_PORT |
501 IB_QP_ACCESS_FLAGS),
8a51866f
RD		 502 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
503 IB_QP_QKEY),
504 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
505 IB_QP_QKEY),
506 }
507 },
508 },
509 [IB_QPS_INIT] = {
510 [IB_QPS_RESET] = { .valid = 1 },
511 [IB_QPS_ERR] = { .valid = 1 },
512 [IB_QPS_INIT] = {
513 .valid = 1,
514 .opt_param = {
515 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
516 IB_QP_PORT |
517 IB_QP_QKEY),
518 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
519 IB_QP_PORT |
520 IB_QP_ACCESS_FLAGS),
521 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
522 IB_QP_PORT |
523 IB_QP_ACCESS_FLAGS),
b42b63cf
SH		 524 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
525 IB_QP_PORT |
526 IB_QP_ACCESS_FLAGS),
527 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
528 IB_QP_PORT |
529 IB_QP_ACCESS_FLAGS),
8a51866f
RD		 530 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
531 IB_QP_QKEY),
532 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
533 IB_QP_QKEY),
534 }
535 },
536 [IB_QPS_RTR] = {
537 .valid = 1,
538 .req_param = {
539 [IB_QPT_UC] = (IB_QP_AV |
540 IB_QP_PATH_MTU |
541 IB_QP_DEST_QPN |
542 IB_QP_RQ_PSN),
543 [IB_QPT_RC] = (IB_QP_AV |
544 IB_QP_PATH_MTU |
545 IB_QP_DEST_QPN |
546 IB_QP_RQ_PSN |
547 IB_QP_MAX_DEST_RD_ATOMIC |
548 IB_QP_MIN_RNR_TIMER),
b42b63cf
SH		 549 [IB_QPT_XRC_INI] = (IB_QP_AV |
550 IB_QP_PATH_MTU |
551 IB_QP_DEST_QPN |
552 IB_QP_RQ_PSN),
553 [IB_QPT_XRC_TGT] = (IB_QP_AV |
554 IB_QP_PATH_MTU |
555 IB_QP_DEST_QPN |
556 IB_QP_RQ_PSN |
557 IB_QP_MAX_DEST_RD_ATOMIC |
558 IB_QP_MIN_RNR_TIMER),
8a51866f
RD		 559 },
560 .opt_param = {
561 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
562 IB_QP_QKEY),
563 [IB_QPT_UC] = (IB_QP_ALT_PATH |
564 IB_QP_ACCESS_FLAGS |
565 IB_QP_PKEY_INDEX),
566 [IB_QPT_RC] = (IB_QP_ALT_PATH |
567 IB_QP_ACCESS_FLAGS |
568 IB_QP_PKEY_INDEX),
b42b63cf
SH		 569 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH |
570 IB_QP_ACCESS_FLAGS |
571 IB_QP_PKEY_INDEX),
572 [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH |
573 IB_QP_ACCESS_FLAGS |
574 IB_QP_PKEY_INDEX),
8a51866f
RD		 575 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
576 IB_QP_QKEY),
577 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
578 IB_QP_QKEY),
579 }
580 }
581 },
582 [IB_QPS_RTR] = {
583 [IB_QPS_RESET] = { .valid = 1 },
584 [IB_QPS_ERR] = { .valid = 1 },
585 [IB_QPS_RTS] = {
586 .valid = 1,
587 .req_param = {
588 [IB_QPT_UD] = IB_QP_SQ_PSN,
589 [IB_QPT_UC] = IB_QP_SQ_PSN,
590 [IB_QPT_RC] = (IB_QP_TIMEOUT |
591 IB_QP_RETRY_CNT |
592 IB_QP_RNR_RETRY |
593 IB_QP_SQ_PSN |
594 IB_QP_MAX_QP_RD_ATOMIC),
b42b63cf
SH		 595 [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT |
596 IB_QP_RETRY_CNT |
597 IB_QP_RNR_RETRY |
598 IB_QP_SQ_PSN |
599 IB_QP_MAX_QP_RD_ATOMIC),
600 [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
601 IB_QP_SQ_PSN),
8a51866f
RD		 602 [IB_QPT_SMI] = IB_QP_SQ_PSN,
603 [IB_QPT_GSI] = IB_QP_SQ_PSN,
604 },
605 .opt_param = {
606 [IB_QPT_UD] = (IB_QP_CUR_STATE |
607 IB_QP_QKEY),
608 [IB_QPT_UC] = (IB_QP_CUR_STATE |
609 IB_QP_ALT_PATH |
610 IB_QP_ACCESS_FLAGS |
611 IB_QP_PATH_MIG_STATE),
612 [IB_QPT_RC] = (IB_QP_CUR_STATE |
613 IB_QP_ALT_PATH |
614 IB_QP_ACCESS_FLAGS |
615 IB_QP_MIN_RNR_TIMER |
616 IB_QP_PATH_MIG_STATE),
b42b63cf
SH		 617 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
618 IB_QP_ALT_PATH |
619 IB_QP_ACCESS_FLAGS |
620 IB_QP_PATH_MIG_STATE),
621 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
622 IB_QP_ALT_PATH |
623 IB_QP_ACCESS_FLAGS |
624 IB_QP_MIN_RNR_TIMER |
625 IB_QP_PATH_MIG_STATE),
8a51866f
RD		 626 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
627 IB_QP_QKEY),
628 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
629 IB_QP_QKEY),
630 }
631 }
632 },
633 [IB_QPS_RTS] = {
634 [IB_QPS_RESET] = { .valid = 1 },
635 [IB_QPS_ERR] = { .valid = 1 },
636 [IB_QPS_RTS] = {
637 .valid = 1,
638 .opt_param = {
639 [IB_QPT_UD] = (IB_QP_CUR_STATE |
640 IB_QP_QKEY),
4546d31d
DB		 641 [IB_QPT_UC] = (IB_QP_CUR_STATE |
642 IB_QP_ACCESS_FLAGS |
8a51866f
RD		 643 IB_QP_ALT_PATH |
644 IB_QP_PATH_MIG_STATE),
4546d31d
DB		 645 [IB_QPT_RC] = (IB_QP_CUR_STATE |
646 IB_QP_ACCESS_FLAGS |
8a51866f
RD		 647 IB_QP_ALT_PATH |
648 IB_QP_PATH_MIG_STATE |
649 IB_QP_MIN_RNR_TIMER),
b42b63cf
SH		 650 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
651 IB_QP_ACCESS_FLAGS |
652 IB_QP_ALT_PATH |
653 IB_QP_PATH_MIG_STATE),
654 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
655 IB_QP_ACCESS_FLAGS |
656 IB_QP_ALT_PATH |
657 IB_QP_PATH_MIG_STATE |
658 IB_QP_MIN_RNR_TIMER),
8a51866f
RD		 659 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
660 IB_QP_QKEY),
661 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
662 IB_QP_QKEY),
663 }
664 },
665 [IB_QPS_SQD] = {
666 .valid = 1,
667 .opt_param = {
668 [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
669 [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
670 [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
b42b63cf
SH		 671 [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
672 [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
8a51866f
RD		 673 [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
674 [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
675 }
676 },
677 },
678 [IB_QPS_SQD] = {
679 [IB_QPS_RESET] = { .valid = 1 },
680 [IB_QPS_ERR] = { .valid = 1 },
681 [IB_QPS_RTS] = {
682 .valid = 1,
683 .opt_param = {
684 [IB_QPT_UD] = (IB_QP_CUR_STATE |
685 IB_QP_QKEY),
686 [IB_QPT_UC] = (IB_QP_CUR_STATE |
687 IB_QP_ALT_PATH |
688 IB_QP_ACCESS_FLAGS |
689 IB_QP_PATH_MIG_STATE),
690 [IB_QPT_RC] = (IB_QP_CUR_STATE |
691 IB_QP_ALT_PATH |
692 IB_QP_ACCESS_FLAGS |
693 IB_QP_MIN_RNR_TIMER |
694 IB_QP_PATH_MIG_STATE),
b42b63cf
SH		 695 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
696 IB_QP_ALT_PATH |
697 IB_QP_ACCESS_FLAGS |
698 IB_QP_PATH_MIG_STATE),
699 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
700 IB_QP_ALT_PATH |
701 IB_QP_ACCESS_FLAGS |
702 IB_QP_MIN_RNR_TIMER |
703 IB_QP_PATH_MIG_STATE),
8a51866f
RD		 704 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
705 IB_QP_QKEY),
706 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
707 IB_QP_QKEY),
708 }
709 },
710 [IB_QPS_SQD] = {
711 .valid = 1,
712 .opt_param = {
713 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
714 IB_QP_QKEY),
715 [IB_QPT_UC] = (IB_QP_AV |
8a51866f
RD		 716 IB_QP_ALT_PATH |
717 IB_QP_ACCESS_FLAGS |
718 IB_QP_PKEY_INDEX |
719 IB_QP_PATH_MIG_STATE),
720 [IB_QPT_RC] = (IB_QP_PORT |
721 IB_QP_AV |
722 IB_QP_TIMEOUT |
723 IB_QP_RETRY_CNT |
724 IB_QP_RNR_RETRY |
725 IB_QP_MAX_QP_RD_ATOMIC |
726 IB_QP_MAX_DEST_RD_ATOMIC |
8a51866f
RD		 727 IB_QP_ALT_PATH |
728 IB_QP_ACCESS_FLAGS |
729 IB_QP_PKEY_INDEX |
730 IB_QP_MIN_RNR_TIMER |
731 IB_QP_PATH_MIG_STATE),
b42b63cf
SH		 732 [IB_QPT_XRC_INI] = (IB_QP_PORT |
733 IB_QP_AV |
734 IB_QP_TIMEOUT |
735 IB_QP_RETRY_CNT |
736 IB_QP_RNR_RETRY |
737 IB_QP_MAX_QP_RD_ATOMIC |
738 IB_QP_ALT_PATH |
739 IB_QP_ACCESS_FLAGS |
740 IB_QP_PKEY_INDEX |
741 IB_QP_PATH_MIG_STATE),
742 [IB_QPT_XRC_TGT] = (IB_QP_PORT |
743 IB_QP_AV |
744 IB_QP_TIMEOUT |
745 IB_QP_MAX_DEST_RD_ATOMIC |
746 IB_QP_ALT_PATH |
747 IB_QP_ACCESS_FLAGS |
748 IB_QP_PKEY_INDEX |
749 IB_QP_MIN_RNR_TIMER |
750 IB_QP_PATH_MIG_STATE),
8a51866f
RD		 751 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
752 IB_QP_QKEY),
753 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
754 IB_QP_QKEY),
755 }
756 }
757 },
758 [IB_QPS_SQE] = {
759 [IB_QPS_RESET] = { .valid = 1 },
760 [IB_QPS_ERR] = { .valid = 1 },
761 [IB_QPS_RTS] = {
762 .valid = 1,
763 .opt_param = {
764 [IB_QPT_UD] = (IB_QP_CUR_STATE |
765 IB_QP_QKEY),
766 [IB_QPT_UC] = (IB_QP_CUR_STATE |
767 IB_QP_ACCESS_FLAGS),
768 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
769 IB_QP_QKEY),
770 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
771 IB_QP_QKEY),
772 }
773 }
774 },
775 [IB_QPS_ERR] = {
776 [IB_QPS_RESET] = { .valid = 1 },
777 [IB_QPS_ERR] = { .valid = 1 }
778 }
779};
780
781int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
782 enum ib_qp_type type, enum ib_qp_attr_mask mask)
783{
784 enum ib_qp_attr_mask req_param, opt_param;
785
786 if (cur_state < 0 || cur_state > IB_QPS_ERR ||
787 next_state < 0 || next_state > IB_QPS_ERR)
788 return 0;
789
790 if (mask & IB_QP_CUR_STATE &&
791 cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
792 cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
793 return 0;
794
795 if (!qp_state_table[cur_state][next_state].valid)
796 return 0;
797
798 req_param = qp_state_table[cur_state][next_state].req_param[type];
799 opt_param = qp_state_table[cur_state][next_state].opt_param[type];
800
801 if ((mask & req_param) != req_param)
802 return 0;
803
804 if (mask & ~(req_param | opt_param | IB_QP_STATE))
805 return 0;
806
807 return 1;
808}
809EXPORT_SYMBOL(ib_modify_qp_is_ok);
810
1da177e4
LT		 811int ib_modify_qp(struct ib_qp *qp,
812 struct ib_qp_attr *qp_attr,
813 int qp_attr_mask)
814{
0e0ec7e0 815 return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
1da177e4
LT		 816}
817EXPORT_SYMBOL(ib_modify_qp);
818
819int ib_query_qp(struct ib_qp *qp,
820 struct ib_qp_attr *qp_attr,
821 int qp_attr_mask,
822 struct ib_qp_init_attr *qp_init_attr)
823{
824 return qp->device->query_qp ?
0e0ec7e0 825 qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
1da177e4
LT		 826 -ENOSYS;
827}
828EXPORT_SYMBOL(ib_query_qp);
829
0e0ec7e0
SH		 830int ib_close_qp(struct ib_qp *qp)
831{
832 struct ib_qp *real_qp;
833 unsigned long flags;
834
835 real_qp = qp->real_qp;
836 if (real_qp == qp)
837 return -EINVAL;
838
839 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
840 list_del(&qp->open_list);
841 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
842
843 atomic_dec(&real_qp->usecnt);
844 kfree(qp);
845
846 return 0;
847}
848EXPORT_SYMBOL(ib_close_qp);
849
850static int __ib_destroy_shared_qp(struct ib_qp *qp)
851{
852 struct ib_xrcd *xrcd;
853 struct ib_qp *real_qp;
854 int ret;
855
856 real_qp = qp->real_qp;
857 xrcd = real_qp->xrcd;
858
859 mutex_lock(&xrcd->tgt_qp_mutex);
860 ib_close_qp(qp);
861 if (atomic_read(&real_qp->usecnt) == 0)
862 list_del(&real_qp->xrcd_list);
863 else
864 real_qp = NULL;
865 mutex_unlock(&xrcd->tgt_qp_mutex);
866
867 if (real_qp) {
868 ret = ib_destroy_qp(real_qp);
869 if (!ret)
870 atomic_dec(&xrcd->usecnt);
871 else
872 __ib_insert_xrcd_qp(xrcd, real_qp);
873 }
874
875 return 0;
876}
877
1da177e4
LT		 878int ib_destroy_qp(struct ib_qp *qp)
879{
880 struct ib_pd *pd;
881 struct ib_cq *scq, *rcq;
882 struct ib_srq *srq;
883 int ret;
884
0e0ec7e0
SH		 885 if (atomic_read(&qp->usecnt))
886 return -EBUSY;
887
888 if (qp->real_qp != qp)
889 return __ib_destroy_shared_qp(qp);
890
b42b63cf
SH		 891 pd = qp->pd;
892 scq = qp->send_cq;
893 rcq = qp->recv_cq;
894 srq = qp->srq;
1da177e4
LT		 895
896 ret = qp->device->destroy_qp(qp);
897 if (!ret) {
b42b63cf
SH		 898 if (pd)
899 atomic_dec(&pd->usecnt);
900 if (scq)
901 atomic_dec(&scq->usecnt);
902 if (rcq)
903 atomic_dec(&rcq->usecnt);
1da177e4
LT		 904 if (srq)
905 atomic_dec(&srq->usecnt);
906 }
907
908 return ret;
909}
910EXPORT_SYMBOL(ib_destroy_qp);
911
912/* Completion queues */
913
914struct ib_cq *ib_create_cq(struct ib_device *device,
915 ib_comp_handler comp_handler,
916 void (*event_handler)(struct ib_event *, void *),
f4fd0b22 917 void *cq_context, int cqe, int comp_vector)
1da177e4
LT		 918{
919 struct ib_cq *cq;
920
f4fd0b22 921 cq = device->create_cq(device, cqe, comp_vector, NULL, NULL);
1da177e4
LT		 922
923 if (!IS_ERR(cq)) {
924 cq->device = device;
b5e81bf5 925 cq->uobject = NULL;
1da177e4
LT		 926 cq->comp_handler = comp_handler;
927 cq->event_handler = event_handler;
928 cq->cq_context = cq_context;
929 atomic_set(&cq->usecnt, 0);
930 }
931
932 return cq;
933}
934EXPORT_SYMBOL(ib_create_cq);
935
2dd57162
EC		 936int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
937{
938 return cq->device->modify_cq ?
939 cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
940}
941EXPORT_SYMBOL(ib_modify_cq);
942
1da177e4
LT		 943int ib_destroy_cq(struct ib_cq *cq)
944{
945 if (atomic_read(&cq->usecnt))
946 return -EBUSY;
947
948 return cq->device->destroy_cq(cq);
949}
950EXPORT_SYMBOL(ib_destroy_cq);
951
a74cd4af 952int ib_resize_cq(struct ib_cq *cq, int cqe)
1da177e4 953{
40de2e54 954 return cq->device->resize_cq ?
33b9b3ee 955 cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
1da177e4
LT		 956}
957EXPORT_SYMBOL(ib_resize_cq);
958
959/* Memory regions */
960
961struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
962{
963 struct ib_mr *mr;
964
965 mr = pd->device->get_dma_mr(pd, mr_access_flags);
966
967 if (!IS_ERR(mr)) {
b5e81bf5
RD		 968 mr->device = pd->device;
969 mr->pd = pd;
970 mr->uobject = NULL;
1da177e4
LT		 971 atomic_inc(&pd->usecnt);
972 atomic_set(&mr->usecnt, 0);
973 }
974
975 return mr;
976}
977EXPORT_SYMBOL(ib_get_dma_mr);
978
979struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
980 struct ib_phys_buf *phys_buf_array,
981 int num_phys_buf,
982 int mr_access_flags,
983 u64 *iova_start)
984{
985 struct ib_mr *mr;
986
7ce5eacb
DB		 987 if (!pd->device->reg_phys_mr)
988 return ERR_PTR(-ENOSYS);
989
1da177e4
LT		 990 mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
991 mr_access_flags, iova_start);
992
993 if (!IS_ERR(mr)) {
b5e81bf5
RD		 994 mr->device = pd->device;
995 mr->pd = pd;
996 mr->uobject = NULL;
1da177e4
LT		 997 atomic_inc(&pd->usecnt);
998 atomic_set(&mr->usecnt, 0);
999 }
1000
1001 return mr;
1002}
1003EXPORT_SYMBOL(ib_reg_phys_mr);
1004
1005int ib_rereg_phys_mr(struct ib_mr *mr,
1006 int mr_rereg_mask,
1007 struct ib_pd *pd,
1008 struct ib_phys_buf *phys_buf_array,
1009 int num_phys_buf,
1010 int mr_access_flags,
1011 u64 *iova_start)
1012{
1013 struct ib_pd *old_pd;
1014 int ret;
1015
1016 if (!mr->device->rereg_phys_mr)
1017 return -ENOSYS;
1018
1019 if (atomic_read(&mr->usecnt))
1020 return -EBUSY;
1021
1022 old_pd = mr->pd;
1023
1024 ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
1025 phys_buf_array, num_phys_buf,
1026 mr_access_flags, iova_start);
1027
1028 if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
1029 atomic_dec(&old_pd->usecnt);
1030 atomic_inc(&pd->usecnt);
1031 }
1032
1033 return ret;
1034}
1035EXPORT_SYMBOL(ib_rereg_phys_mr);
1036
1037int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
1038{
1039 return mr->device->query_mr ?
1040 mr->device->query_mr(mr, mr_attr) : -ENOSYS;
1041}
1042EXPORT_SYMBOL(ib_query_mr);
1043
1044int ib_dereg_mr(struct ib_mr *mr)
1045{
1046 struct ib_pd *pd;
1047 int ret;
1048
1049 if (atomic_read(&mr->usecnt))
1050 return -EBUSY;
1051
1052 pd = mr->pd;
1053 ret = mr->device->dereg_mr(mr);
1054 if (!ret)
1055 atomic_dec(&pd->usecnt);
1056
1057 return ret;
1058}
1059EXPORT_SYMBOL(ib_dereg_mr);
1060
00f7ec36
SW		 1061struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
1062{
1063 struct ib_mr *mr;
1064
1065 if (!pd->device->alloc_fast_reg_mr)
1066 return ERR_PTR(-ENOSYS);
1067
1068 mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len);
1069
1070 if (!IS_ERR(mr)) {
1071 mr->device = pd->device;
1072 mr->pd = pd;
1073 mr->uobject = NULL;
1074 atomic_inc(&pd->usecnt);
1075 atomic_set(&mr->usecnt, 0);
1076 }
1077
1078 return mr;
1079}
1080EXPORT_SYMBOL(ib_alloc_fast_reg_mr);
1081
1082struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
1083 int max_page_list_len)
1084{
1085 struct ib_fast_reg_page_list *page_list;
1086
1087 if (!device->alloc_fast_reg_page_list)
1088 return ERR_PTR(-ENOSYS);
1089
1090 page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
1091
1092 if (!IS_ERR(page_list)) {
1093 page_list->device = device;
1094 page_list->max_page_list_len = max_page_list_len;
1095 }
1096
1097 return page_list;
1098}
1099EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
1100
1101void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
1102{
1103 page_list->device->free_fast_reg_page_list(page_list);
1104}
1105EXPORT_SYMBOL(ib_free_fast_reg_page_list);
1106
1da177e4
LT		 1107/* Memory windows */
1108
7083e42e 1109struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
1da177e4
LT		 1110{
1111 struct ib_mw *mw;
1112
1113 if (!pd->device->alloc_mw)
1114 return ERR_PTR(-ENOSYS);
1115
7083e42e 1116 mw = pd->device->alloc_mw(pd, type);
1da177e4 1117 if (!IS_ERR(mw)) {
b5e81bf5
RD		 1118 mw->device = pd->device;
1119 mw->pd = pd;
1120 mw->uobject = NULL;
7083e42e 1121 mw->type = type;
1da177e4
LT		 1122 atomic_inc(&pd->usecnt);
1123 }
1124
1125 return mw;
1126}
1127EXPORT_SYMBOL(ib_alloc_mw);
1128
1129int ib_dealloc_mw(struct ib_mw *mw)
1130{
1131 struct ib_pd *pd;
1132 int ret;
1133
1134 pd = mw->pd;
1135 ret = mw->device->dealloc_mw(mw);
1136 if (!ret)
1137 atomic_dec(&pd->usecnt);
1138
1139 return ret;
1140}
1141EXPORT_SYMBOL(ib_dealloc_mw);
1142
1143/* "Fast" memory regions */
1144
1145struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1146 int mr_access_flags,
1147 struct ib_fmr_attr *fmr_attr)
1148{
1149 struct ib_fmr *fmr;
1150
1151 if (!pd->device->alloc_fmr)
1152 return ERR_PTR(-ENOSYS);
1153
1154 fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
1155 if (!IS_ERR(fmr)) {
1156 fmr->device = pd->device;
1157 fmr->pd = pd;
1158 atomic_inc(&pd->usecnt);
1159 }
1160
1161 return fmr;
1162}
1163EXPORT_SYMBOL(ib_alloc_fmr);
1164
1165int ib_unmap_fmr(struct list_head *fmr_list)
1166{
1167 struct ib_fmr *fmr;
1168
1169 if (list_empty(fmr_list))
1170 return 0;
1171
1172 fmr = list_entry(fmr_list->next, struct ib_fmr, list);
1173 return fmr->device->unmap_fmr(fmr_list);
1174}
1175EXPORT_SYMBOL(ib_unmap_fmr);
1176
1177int ib_dealloc_fmr(struct ib_fmr *fmr)
1178{
1179 struct ib_pd *pd;
1180 int ret;
1181
1182 pd = fmr->pd;
1183 ret = fmr->device->dealloc_fmr(fmr);
1184 if (!ret)
1185 atomic_dec(&pd->usecnt);
1186
1187 return ret;
1188}
1189EXPORT_SYMBOL(ib_dealloc_fmr);
1190
1191/* Multicast groups */
1192
1193int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1194{
c3bccbfb
OG		 1195 int ret;
1196
0c33aeed
JM		 1197 if (!qp->device->attach_mcast)
1198 return -ENOSYS;
1199 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1200 return -EINVAL;
1201
c3bccbfb
OG		 1202 ret = qp->device->attach_mcast(qp, gid, lid);
1203 if (!ret)
1204 atomic_inc(&qp->usecnt);
1205 return ret;
1da177e4
LT		 1206}
1207EXPORT_SYMBOL(ib_attach_mcast);
1208
1209int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1210{
c3bccbfb
OG		 1211 int ret;
1212
0c33aeed
JM		 1213 if (!qp->device->detach_mcast)
1214 return -ENOSYS;
1215 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1216 return -EINVAL;
1217
c3bccbfb
OG		 1218 ret = qp->device->detach_mcast(qp, gid, lid);
1219 if (!ret)
1220 atomic_dec(&qp->usecnt);
1221 return ret;
1da177e4
LT		 1222}
1223EXPORT_SYMBOL(ib_detach_mcast);
59991f94
SH		 1224
1225struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
1226{
1227 struct ib_xrcd *xrcd;
1228
1229 if (!device->alloc_xrcd)
1230 return ERR_PTR(-ENOSYS);
1231
1232 xrcd = device->alloc_xrcd(device, NULL, NULL);
1233 if (!IS_ERR(xrcd)) {
1234 xrcd->device = device;
53d0bd1e 1235 xrcd->inode = NULL;
59991f94 1236 atomic_set(&xrcd->usecnt, 0);
d3d72d90
SH		 1237 mutex_init(&xrcd->tgt_qp_mutex);
1238 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
59991f94
SH		 1239 }
1240
1241 return xrcd;
1242}
1243EXPORT_SYMBOL(ib_alloc_xrcd);
1244
1245int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1246{
d3d72d90
SH		 1247 struct ib_qp *qp;
1248 int ret;
1249
59991f94
SH		 1250 if (atomic_read(&xrcd->usecnt))
1251 return -EBUSY;
1252
d3d72d90
SH		 1253 while (!list_empty(&xrcd->tgt_qp_list)) {
1254 qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
1255 ret = ib_destroy_qp(qp);
1256 if (ret)
1257 return ret;
1258 }
1259
59991f94
SH		 1260 return xrcd->device->dealloc_xrcd(xrcd);
1261}
1262EXPORT_SYMBOL(ib_dealloc_xrcd);
319a441d
HHZ		 1263
1264struct ib_flow *ib_create_flow(struct ib_qp *qp,
1265 struct ib_flow_attr *flow_attr,
1266 int domain)
1267{
1268 struct ib_flow *flow_id;
1269 if (!qp->device->create_flow)
1270 return ERR_PTR(-ENOSYS);
1271
1272 flow_id = qp->device->create_flow(qp, flow_attr, domain);
1273 if (!IS_ERR(flow_id))
1274 atomic_inc(&qp->usecnt);
1275 return flow_id;
1276}
1277EXPORT_SYMBOL(ib_create_flow);
1278
1279int ib_destroy_flow(struct ib_flow *flow_id)
1280{
1281 int err;
1282 struct ib_qp *qp = flow_id->qp;
1283
1284 err = qp->device->destroy_flow(flow_id);
1285 if (!err)
1286 atomic_dec(&qp->usecnt);
1287 return err;
1288}
1289EXPORT_SYMBOL(ib_destroy_flow);
Linux kernel - Deliverables
This page took 0.95056 seconds and 5 git commands to generate.