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.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
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:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
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.
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
39 #include <linux/errno.h>
40 #include <linux/err.h>
41 #include <linux/export.h>
42 #include <linux/string.h>
43 #include <linux/slab.h>
45 #include <rdma/ib_verbs.h>
46 #include <rdma/ib_cache.h>
48 int ib_rate_to_mult(enum ib_rate 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;
63 EXPORT_SYMBOL(ib_rate_to_mult
);
65 enum ib_rate
mult_to_ib_rate(int 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
;
80 EXPORT_SYMBOL(mult_to_ib_rate
);
82 int ib_rate_to_mbps(enum ib_rate 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;
105 EXPORT_SYMBOL(ib_rate_to_mbps
);
107 enum rdma_transport_type
108 rdma_node_get_transport(enum rdma_node_type 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
;
116 return RDMA_TRANSPORT_IWARP
;
122 EXPORT_SYMBOL(rdma_node_get_transport
);
124 enum rdma_link_layer
rdma_port_get_link_layer(struct ib_device
*device
, u8 port_num
)
126 if (device
->get_link_layer
)
127 return device
->get_link_layer(device
, port_num
);
129 switch (rdma_node_get_transport(device
->node_type
)) {
130 case RDMA_TRANSPORT_IB
:
131 return IB_LINK_LAYER_INFINIBAND
;
132 case RDMA_TRANSPORT_IWARP
:
133 return IB_LINK_LAYER_ETHERNET
;
135 return IB_LINK_LAYER_UNSPECIFIED
;
138 EXPORT_SYMBOL(rdma_port_get_link_layer
);
140 /* Protection domains */
142 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
)
146 pd
= device
->alloc_pd(device
, NULL
, NULL
);
151 atomic_set(&pd
->usecnt
, 0);
156 EXPORT_SYMBOL(ib_alloc_pd
);
158 int ib_dealloc_pd(struct ib_pd
*pd
)
160 if (atomic_read(&pd
->usecnt
))
163 return pd
->device
->dealloc_pd(pd
);
165 EXPORT_SYMBOL(ib_dealloc_pd
);
167 /* Address handles */
169 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
)
173 ah
= pd
->device
->create_ah(pd
, ah_attr
);
176 ah
->device
= pd
->device
;
179 atomic_inc(&pd
->usecnt
);
184 EXPORT_SYMBOL(ib_create_ah
);
186 int ib_init_ah_from_wc(struct ib_device
*device
, u8 port_num
, struct ib_wc
*wc
,
187 struct ib_grh
*grh
, struct ib_ah_attr
*ah_attr
)
193 memset(ah_attr
, 0, sizeof *ah_attr
);
194 ah_attr
->dlid
= wc
->slid
;
195 ah_attr
->sl
= wc
->sl
;
196 ah_attr
->src_path_bits
= wc
->dlid_path_bits
;
197 ah_attr
->port_num
= port_num
;
199 if (wc
->wc_flags
& IB_WC_GRH
) {
200 ah_attr
->ah_flags
= IB_AH_GRH
;
201 ah_attr
->grh
.dgid
= grh
->sgid
;
203 ret
= ib_find_cached_gid(device
, &grh
->dgid
, &port_num
,
208 ah_attr
->grh
.sgid_index
= (u8
) gid_index
;
209 flow_class
= be32_to_cpu(grh
->version_tclass_flow
);
210 ah_attr
->grh
.flow_label
= flow_class
& 0xFFFFF;
211 ah_attr
->grh
.hop_limit
= 0xFF;
212 ah_attr
->grh
.traffic_class
= (flow_class
>> 20) & 0xFF;
216 EXPORT_SYMBOL(ib_init_ah_from_wc
);
218 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, struct ib_wc
*wc
,
219 struct ib_grh
*grh
, u8 port_num
)
221 struct ib_ah_attr ah_attr
;
224 ret
= ib_init_ah_from_wc(pd
->device
, port_num
, wc
, grh
, &ah_attr
);
228 return ib_create_ah(pd
, &ah_attr
);
230 EXPORT_SYMBOL(ib_create_ah_from_wc
);
232 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
)
234 return ah
->device
->modify_ah
?
235 ah
->device
->modify_ah(ah
, ah_attr
) :
238 EXPORT_SYMBOL(ib_modify_ah
);
240 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
)
242 return ah
->device
->query_ah
?
243 ah
->device
->query_ah(ah
, ah_attr
) :
246 EXPORT_SYMBOL(ib_query_ah
);
248 int ib_destroy_ah(struct ib_ah
*ah
)
254 ret
= ah
->device
->destroy_ah(ah
);
256 atomic_dec(&pd
->usecnt
);
260 EXPORT_SYMBOL(ib_destroy_ah
);
262 /* Shared receive queues */
264 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
265 struct ib_srq_init_attr
*srq_init_attr
)
269 if (!pd
->device
->create_srq
)
270 return ERR_PTR(-ENOSYS
);
272 srq
= pd
->device
->create_srq(pd
, srq_init_attr
, NULL
);
275 srq
->device
= pd
->device
;
278 srq
->event_handler
= srq_init_attr
->event_handler
;
279 srq
->srq_context
= srq_init_attr
->srq_context
;
280 srq
->srq_type
= srq_init_attr
->srq_type
;
281 if (srq
->srq_type
== IB_SRQT_XRC
) {
282 srq
->ext
.xrc
.xrcd
= srq_init_attr
->ext
.xrc
.xrcd
;
283 srq
->ext
.xrc
.cq
= srq_init_attr
->ext
.xrc
.cq
;
284 atomic_inc(&srq
->ext
.xrc
.xrcd
->usecnt
);
285 atomic_inc(&srq
->ext
.xrc
.cq
->usecnt
);
287 atomic_inc(&pd
->usecnt
);
288 atomic_set(&srq
->usecnt
, 0);
293 EXPORT_SYMBOL(ib_create_srq
);
295 int ib_modify_srq(struct ib_srq
*srq
,
296 struct ib_srq_attr
*srq_attr
,
297 enum ib_srq_attr_mask srq_attr_mask
)
299 return srq
->device
->modify_srq
?
300 srq
->device
->modify_srq(srq
, srq_attr
, srq_attr_mask
, NULL
) :
303 EXPORT_SYMBOL(ib_modify_srq
);
305 int ib_query_srq(struct ib_srq
*srq
,
306 struct ib_srq_attr
*srq_attr
)
308 return srq
->device
->query_srq
?
309 srq
->device
->query_srq(srq
, srq_attr
) : -ENOSYS
;
311 EXPORT_SYMBOL(ib_query_srq
);
313 int ib_destroy_srq(struct ib_srq
*srq
)
316 enum ib_srq_type srq_type
;
317 struct ib_xrcd
*uninitialized_var(xrcd
);
318 struct ib_cq
*uninitialized_var(cq
);
321 if (atomic_read(&srq
->usecnt
))
325 srq_type
= srq
->srq_type
;
326 if (srq_type
== IB_SRQT_XRC
) {
327 xrcd
= srq
->ext
.xrc
.xrcd
;
328 cq
= srq
->ext
.xrc
.cq
;
331 ret
= srq
->device
->destroy_srq(srq
);
333 atomic_dec(&pd
->usecnt
);
334 if (srq_type
== IB_SRQT_XRC
) {
335 atomic_dec(&xrcd
->usecnt
);
336 atomic_dec(&cq
->usecnt
);
342 EXPORT_SYMBOL(ib_destroy_srq
);
346 static void __ib_shared_qp_event_handler(struct ib_event
*event
, void *context
)
348 struct ib_qp
*qp
= context
;
350 list_for_each_entry(event
->element
.qp
, &qp
->open_list
, open_list
)
351 event
->element
.qp
->event_handler(event
, event
->element
.qp
->qp_context
);
354 static void __ib_insert_xrcd_qp(struct ib_xrcd
*xrcd
, struct ib_qp
*qp
)
356 mutex_lock(&xrcd
->tgt_qp_mutex
);
357 list_add(&qp
->xrcd_list
, &xrcd
->tgt_qp_list
);
358 mutex_unlock(&xrcd
->tgt_qp_mutex
);
361 static struct ib_qp
*__ib_open_qp(struct ib_qp
*real_qp
,
362 void (*event_handler
)(struct ib_event
*, void *),
368 qp
= kzalloc(sizeof *qp
, GFP_KERNEL
);
370 return ERR_PTR(-ENOMEM
);
372 qp
->real_qp
= real_qp
;
373 atomic_inc(&real_qp
->usecnt
);
374 qp
->device
= real_qp
->device
;
375 qp
->event_handler
= event_handler
;
376 qp
->qp_context
= qp_context
;
377 qp
->qp_num
= real_qp
->qp_num
;
378 qp
->qp_type
= real_qp
->qp_type
;
380 spin_lock_irqsave(&real_qp
->device
->event_handler_lock
, flags
);
381 list_add(&qp
->open_list
, &real_qp
->open_list
);
382 spin_unlock_irqrestore(&real_qp
->device
->event_handler_lock
, flags
);
387 struct ib_qp
*ib_open_qp(struct ib_xrcd
*xrcd
,
388 struct ib_qp_open_attr
*qp_open_attr
)
390 struct ib_qp
*qp
, *real_qp
;
392 if (qp_open_attr
->qp_type
!= IB_QPT_XRC_TGT
)
393 return ERR_PTR(-EINVAL
);
395 qp
= ERR_PTR(-EINVAL
);
396 mutex_lock(&xrcd
->tgt_qp_mutex
);
397 list_for_each_entry(real_qp
, &xrcd
->tgt_qp_list
, xrcd_list
) {
398 if (real_qp
->qp_num
== qp_open_attr
->qp_num
) {
399 qp
= __ib_open_qp(real_qp
, qp_open_attr
->event_handler
,
400 qp_open_attr
->qp_context
);
404 mutex_unlock(&xrcd
->tgt_qp_mutex
);
407 EXPORT_SYMBOL(ib_open_qp
);
409 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
410 struct ib_qp_init_attr
*qp_init_attr
)
412 struct ib_qp
*qp
, *real_qp
;
413 struct ib_device
*device
;
415 device
= pd
? pd
->device
: qp_init_attr
->xrcd
->device
;
416 qp
= device
->create_qp(pd
, qp_init_attr
, NULL
);
422 qp
->qp_type
= qp_init_attr
->qp_type
;
424 atomic_set(&qp
->usecnt
, 0);
425 if (qp_init_attr
->qp_type
== IB_QPT_XRC_TGT
) {
426 qp
->event_handler
= __ib_shared_qp_event_handler
;
429 qp
->send_cq
= qp
->recv_cq
= NULL
;
431 qp
->xrcd
= qp_init_attr
->xrcd
;
432 atomic_inc(&qp_init_attr
->xrcd
->usecnt
);
433 INIT_LIST_HEAD(&qp
->open_list
);
436 qp
= __ib_open_qp(real_qp
, qp_init_attr
->event_handler
,
437 qp_init_attr
->qp_context
);
439 __ib_insert_xrcd_qp(qp_init_attr
->xrcd
, real_qp
);
441 real_qp
->device
->destroy_qp(real_qp
);
443 qp
->event_handler
= qp_init_attr
->event_handler
;
444 qp
->qp_context
= qp_init_attr
->qp_context
;
445 if (qp_init_attr
->qp_type
== IB_QPT_XRC_INI
) {
449 qp
->recv_cq
= qp_init_attr
->recv_cq
;
450 atomic_inc(&qp_init_attr
->recv_cq
->usecnt
);
451 qp
->srq
= qp_init_attr
->srq
;
453 atomic_inc(&qp_init_attr
->srq
->usecnt
);
457 qp
->send_cq
= qp_init_attr
->send_cq
;
460 atomic_inc(&pd
->usecnt
);
461 atomic_inc(&qp_init_attr
->send_cq
->usecnt
);
467 EXPORT_SYMBOL(ib_create_qp
);
469 static const struct {
471 enum ib_qp_attr_mask req_param
[IB_QPT_MAX
];
472 enum ib_qp_attr_mask opt_param
[IB_QPT_MAX
];
473 } qp_state_table
[IB_QPS_ERR
+ 1][IB_QPS_ERR
+ 1] = {
475 [IB_QPS_RESET
] = { .valid
= 1 },
479 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
482 [IB_QPT_UC
] = (IB_QP_PKEY_INDEX
|
485 [IB_QPT_RC
] = (IB_QP_PKEY_INDEX
|
488 [IB_QPT_XRC_INI
] = (IB_QP_PKEY_INDEX
|
491 [IB_QPT_XRC_TGT
] = (IB_QP_PKEY_INDEX
|
494 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
496 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
502 [IB_QPS_RESET
] = { .valid
= 1 },
503 [IB_QPS_ERR
] = { .valid
= 1 },
507 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
510 [IB_QPT_UC
] = (IB_QP_PKEY_INDEX
|
513 [IB_QPT_RC
] = (IB_QP_PKEY_INDEX
|
516 [IB_QPT_XRC_INI
] = (IB_QP_PKEY_INDEX
|
519 [IB_QPT_XRC_TGT
] = (IB_QP_PKEY_INDEX
|
522 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
524 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
531 [IB_QPT_UC
] = (IB_QP_AV
|
535 [IB_QPT_RC
] = (IB_QP_AV
|
539 IB_QP_MAX_DEST_RD_ATOMIC
|
540 IB_QP_MIN_RNR_TIMER
),
541 [IB_QPT_XRC_INI
] = (IB_QP_AV
|
545 [IB_QPT_XRC_TGT
] = (IB_QP_AV
|
549 IB_QP_MAX_DEST_RD_ATOMIC
|
550 IB_QP_MIN_RNR_TIMER
),
553 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
555 [IB_QPT_UC
] = (IB_QP_ALT_PATH
|
558 [IB_QPT_RC
] = (IB_QP_ALT_PATH
|
561 [IB_QPT_XRC_INI
] = (IB_QP_ALT_PATH
|
564 [IB_QPT_XRC_TGT
] = (IB_QP_ALT_PATH
|
567 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
569 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
575 [IB_QPS_RESET
] = { .valid
= 1 },
576 [IB_QPS_ERR
] = { .valid
= 1 },
580 [IB_QPT_UD
] = IB_QP_SQ_PSN
,
581 [IB_QPT_UC
] = IB_QP_SQ_PSN
,
582 [IB_QPT_RC
] = (IB_QP_TIMEOUT
|
586 IB_QP_MAX_QP_RD_ATOMIC
),
587 [IB_QPT_XRC_INI
] = (IB_QP_TIMEOUT
|
591 IB_QP_MAX_QP_RD_ATOMIC
),
592 [IB_QPT_XRC_TGT
] = (IB_QP_TIMEOUT
|
594 [IB_QPT_SMI
] = IB_QP_SQ_PSN
,
595 [IB_QPT_GSI
] = IB_QP_SQ_PSN
,
598 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
600 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
603 IB_QP_PATH_MIG_STATE
),
604 [IB_QPT_RC
] = (IB_QP_CUR_STATE
|
607 IB_QP_MIN_RNR_TIMER
|
608 IB_QP_PATH_MIG_STATE
),
609 [IB_QPT_XRC_INI
] = (IB_QP_CUR_STATE
|
612 IB_QP_PATH_MIG_STATE
),
613 [IB_QPT_XRC_TGT
] = (IB_QP_CUR_STATE
|
616 IB_QP_MIN_RNR_TIMER
|
617 IB_QP_PATH_MIG_STATE
),
618 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
620 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
626 [IB_QPS_RESET
] = { .valid
= 1 },
627 [IB_QPS_ERR
] = { .valid
= 1 },
631 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
633 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
636 IB_QP_PATH_MIG_STATE
),
637 [IB_QPT_RC
] = (IB_QP_CUR_STATE
|
640 IB_QP_PATH_MIG_STATE
|
641 IB_QP_MIN_RNR_TIMER
),
642 [IB_QPT_XRC_INI
] = (IB_QP_CUR_STATE
|
645 IB_QP_PATH_MIG_STATE
),
646 [IB_QPT_XRC_TGT
] = (IB_QP_CUR_STATE
|
649 IB_QP_PATH_MIG_STATE
|
650 IB_QP_MIN_RNR_TIMER
),
651 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
653 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
660 [IB_QPT_UD
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
661 [IB_QPT_UC
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
662 [IB_QPT_RC
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
663 [IB_QPT_XRC_INI
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
664 [IB_QPT_XRC_TGT
] = IB_QP_EN_SQD_ASYNC_NOTIFY
, /* ??? */
665 [IB_QPT_SMI
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
666 [IB_QPT_GSI
] = IB_QP_EN_SQD_ASYNC_NOTIFY
671 [IB_QPS_RESET
] = { .valid
= 1 },
672 [IB_QPS_ERR
] = { .valid
= 1 },
676 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
678 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
681 IB_QP_PATH_MIG_STATE
),
682 [IB_QPT_RC
] = (IB_QP_CUR_STATE
|
685 IB_QP_MIN_RNR_TIMER
|
686 IB_QP_PATH_MIG_STATE
),
687 [IB_QPT_XRC_INI
] = (IB_QP_CUR_STATE
|
690 IB_QP_PATH_MIG_STATE
),
691 [IB_QPT_XRC_TGT
] = (IB_QP_CUR_STATE
|
694 IB_QP_MIN_RNR_TIMER
|
695 IB_QP_PATH_MIG_STATE
),
696 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
698 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
705 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
707 [IB_QPT_UC
] = (IB_QP_AV
|
711 IB_QP_PATH_MIG_STATE
),
712 [IB_QPT_RC
] = (IB_QP_PORT
|
717 IB_QP_MAX_QP_RD_ATOMIC
|
718 IB_QP_MAX_DEST_RD_ATOMIC
|
722 IB_QP_MIN_RNR_TIMER
|
723 IB_QP_PATH_MIG_STATE
),
724 [IB_QPT_XRC_INI
] = (IB_QP_PORT
|
729 IB_QP_MAX_QP_RD_ATOMIC
|
733 IB_QP_PATH_MIG_STATE
),
734 [IB_QPT_XRC_TGT
] = (IB_QP_PORT
|
737 IB_QP_MAX_DEST_RD_ATOMIC
|
741 IB_QP_MIN_RNR_TIMER
|
742 IB_QP_PATH_MIG_STATE
),
743 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
745 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
751 [IB_QPS_RESET
] = { .valid
= 1 },
752 [IB_QPS_ERR
] = { .valid
= 1 },
756 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
758 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
760 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
762 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
768 [IB_QPS_RESET
] = { .valid
= 1 },
769 [IB_QPS_ERR
] = { .valid
= 1 }
773 int ib_modify_qp_is_ok(enum ib_qp_state cur_state
, enum ib_qp_state next_state
,
774 enum ib_qp_type type
, enum ib_qp_attr_mask mask
)
776 enum ib_qp_attr_mask req_param
, opt_param
;
778 if (cur_state
< 0 || cur_state
> IB_QPS_ERR
||
779 next_state
< 0 || next_state
> IB_QPS_ERR
)
782 if (mask
& IB_QP_CUR_STATE
&&
783 cur_state
!= IB_QPS_RTR
&& cur_state
!= IB_QPS_RTS
&&
784 cur_state
!= IB_QPS_SQD
&& cur_state
!= IB_QPS_SQE
)
787 if (!qp_state_table
[cur_state
][next_state
].valid
)
790 req_param
= qp_state_table
[cur_state
][next_state
].req_param
[type
];
791 opt_param
= qp_state_table
[cur_state
][next_state
].opt_param
[type
];
793 if ((mask
& req_param
) != req_param
)
796 if (mask
& ~(req_param
| opt_param
| IB_QP_STATE
))
801 EXPORT_SYMBOL(ib_modify_qp_is_ok
);
803 int ib_modify_qp(struct ib_qp
*qp
,
804 struct ib_qp_attr
*qp_attr
,
807 return qp
->device
->modify_qp(qp
->real_qp
, qp_attr
, qp_attr_mask
, NULL
);
809 EXPORT_SYMBOL(ib_modify_qp
);
811 int ib_query_qp(struct ib_qp
*qp
,
812 struct ib_qp_attr
*qp_attr
,
814 struct ib_qp_init_attr
*qp_init_attr
)
816 return qp
->device
->query_qp
?
817 qp
->device
->query_qp(qp
->real_qp
, qp_attr
, qp_attr_mask
, qp_init_attr
) :
820 EXPORT_SYMBOL(ib_query_qp
);
822 int ib_close_qp(struct ib_qp
*qp
)
824 struct ib_qp
*real_qp
;
827 real_qp
= qp
->real_qp
;
831 spin_lock_irqsave(&real_qp
->device
->event_handler_lock
, flags
);
832 list_del(&qp
->open_list
);
833 spin_unlock_irqrestore(&real_qp
->device
->event_handler_lock
, flags
);
835 atomic_dec(&real_qp
->usecnt
);
840 EXPORT_SYMBOL(ib_close_qp
);
842 static int __ib_destroy_shared_qp(struct ib_qp
*qp
)
844 struct ib_xrcd
*xrcd
;
845 struct ib_qp
*real_qp
;
848 real_qp
= qp
->real_qp
;
849 xrcd
= real_qp
->xrcd
;
851 mutex_lock(&xrcd
->tgt_qp_mutex
);
853 if (atomic_read(&real_qp
->usecnt
) == 0)
854 list_del(&real_qp
->xrcd_list
);
857 mutex_unlock(&xrcd
->tgt_qp_mutex
);
860 ret
= ib_destroy_qp(real_qp
);
862 atomic_dec(&xrcd
->usecnt
);
864 __ib_insert_xrcd_qp(xrcd
, real_qp
);
870 int ib_destroy_qp(struct ib_qp
*qp
)
873 struct ib_cq
*scq
, *rcq
;
877 if (atomic_read(&qp
->usecnt
))
880 if (qp
->real_qp
!= qp
)
881 return __ib_destroy_shared_qp(qp
);
888 ret
= qp
->device
->destroy_qp(qp
);
891 atomic_dec(&pd
->usecnt
);
893 atomic_dec(&scq
->usecnt
);
895 atomic_dec(&rcq
->usecnt
);
897 atomic_dec(&srq
->usecnt
);
902 EXPORT_SYMBOL(ib_destroy_qp
);
904 /* Completion queues */
906 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
907 ib_comp_handler comp_handler
,
908 void (*event_handler
)(struct ib_event
*, void *),
909 void *cq_context
, int cqe
, int comp_vector
)
913 cq
= device
->create_cq(device
, cqe
, comp_vector
, NULL
, NULL
);
918 cq
->comp_handler
= comp_handler
;
919 cq
->event_handler
= event_handler
;
920 cq
->cq_context
= cq_context
;
921 atomic_set(&cq
->usecnt
, 0);
926 EXPORT_SYMBOL(ib_create_cq
);
928 int ib_modify_cq(struct ib_cq
*cq
, u16 cq_count
, u16 cq_period
)
930 return cq
->device
->modify_cq
?
931 cq
->device
->modify_cq(cq
, cq_count
, cq_period
) : -ENOSYS
;
933 EXPORT_SYMBOL(ib_modify_cq
);
935 int ib_destroy_cq(struct ib_cq
*cq
)
937 if (atomic_read(&cq
->usecnt
))
940 return cq
->device
->destroy_cq(cq
);
942 EXPORT_SYMBOL(ib_destroy_cq
);
944 int ib_resize_cq(struct ib_cq
*cq
, int cqe
)
946 return cq
->device
->resize_cq
?
947 cq
->device
->resize_cq(cq
, cqe
, NULL
) : -ENOSYS
;
949 EXPORT_SYMBOL(ib_resize_cq
);
953 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
)
957 mr
= pd
->device
->get_dma_mr(pd
, mr_access_flags
);
960 mr
->device
= pd
->device
;
963 atomic_inc(&pd
->usecnt
);
964 atomic_set(&mr
->usecnt
, 0);
969 EXPORT_SYMBOL(ib_get_dma_mr
);
971 struct ib_mr
*ib_reg_phys_mr(struct ib_pd
*pd
,
972 struct ib_phys_buf
*phys_buf_array
,
979 if (!pd
->device
->reg_phys_mr
)
980 return ERR_PTR(-ENOSYS
);
982 mr
= pd
->device
->reg_phys_mr(pd
, phys_buf_array
, num_phys_buf
,
983 mr_access_flags
, iova_start
);
986 mr
->device
= pd
->device
;
989 atomic_inc(&pd
->usecnt
);
990 atomic_set(&mr
->usecnt
, 0);
995 EXPORT_SYMBOL(ib_reg_phys_mr
);
997 int ib_rereg_phys_mr(struct ib_mr
*mr
,
1000 struct ib_phys_buf
*phys_buf_array
,
1002 int mr_access_flags
,
1005 struct ib_pd
*old_pd
;
1008 if (!mr
->device
->rereg_phys_mr
)
1011 if (atomic_read(&mr
->usecnt
))
1016 ret
= mr
->device
->rereg_phys_mr(mr
, mr_rereg_mask
, pd
,
1017 phys_buf_array
, num_phys_buf
,
1018 mr_access_flags
, iova_start
);
1020 if (!ret
&& (mr_rereg_mask
& IB_MR_REREG_PD
)) {
1021 atomic_dec(&old_pd
->usecnt
);
1022 atomic_inc(&pd
->usecnt
);
1027 EXPORT_SYMBOL(ib_rereg_phys_mr
);
1029 int ib_query_mr(struct ib_mr
*mr
, struct ib_mr_attr
*mr_attr
)
1031 return mr
->device
->query_mr
?
1032 mr
->device
->query_mr(mr
, mr_attr
) : -ENOSYS
;
1034 EXPORT_SYMBOL(ib_query_mr
);
1036 int ib_dereg_mr(struct ib_mr
*mr
)
1041 if (atomic_read(&mr
->usecnt
))
1045 ret
= mr
->device
->dereg_mr(mr
);
1047 atomic_dec(&pd
->usecnt
);
1051 EXPORT_SYMBOL(ib_dereg_mr
);
1053 struct ib_mr
*ib_alloc_fast_reg_mr(struct ib_pd
*pd
, int max_page_list_len
)
1057 if (!pd
->device
->alloc_fast_reg_mr
)
1058 return ERR_PTR(-ENOSYS
);
1060 mr
= pd
->device
->alloc_fast_reg_mr(pd
, max_page_list_len
);
1063 mr
->device
= pd
->device
;
1066 atomic_inc(&pd
->usecnt
);
1067 atomic_set(&mr
->usecnt
, 0);
1072 EXPORT_SYMBOL(ib_alloc_fast_reg_mr
);
1074 struct ib_fast_reg_page_list
*ib_alloc_fast_reg_page_list(struct ib_device
*device
,
1075 int max_page_list_len
)
1077 struct ib_fast_reg_page_list
*page_list
;
1079 if (!device
->alloc_fast_reg_page_list
)
1080 return ERR_PTR(-ENOSYS
);
1082 page_list
= device
->alloc_fast_reg_page_list(device
, max_page_list_len
);
1084 if (!IS_ERR(page_list
)) {
1085 page_list
->device
= device
;
1086 page_list
->max_page_list_len
= max_page_list_len
;
1091 EXPORT_SYMBOL(ib_alloc_fast_reg_page_list
);
1093 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list
*page_list
)
1095 page_list
->device
->free_fast_reg_page_list(page_list
);
1097 EXPORT_SYMBOL(ib_free_fast_reg_page_list
);
1099 /* Memory windows */
1101 struct ib_mw
*ib_alloc_mw(struct ib_pd
*pd
)
1105 if (!pd
->device
->alloc_mw
)
1106 return ERR_PTR(-ENOSYS
);
1108 mw
= pd
->device
->alloc_mw(pd
);
1110 mw
->device
= pd
->device
;
1113 atomic_inc(&pd
->usecnt
);
1118 EXPORT_SYMBOL(ib_alloc_mw
);
1120 int ib_dealloc_mw(struct ib_mw
*mw
)
1126 ret
= mw
->device
->dealloc_mw(mw
);
1128 atomic_dec(&pd
->usecnt
);
1132 EXPORT_SYMBOL(ib_dealloc_mw
);
1134 /* "Fast" memory regions */
1136 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
1137 int mr_access_flags
,
1138 struct ib_fmr_attr
*fmr_attr
)
1142 if (!pd
->device
->alloc_fmr
)
1143 return ERR_PTR(-ENOSYS
);
1145 fmr
= pd
->device
->alloc_fmr(pd
, mr_access_flags
, fmr_attr
);
1147 fmr
->device
= pd
->device
;
1149 atomic_inc(&pd
->usecnt
);
1154 EXPORT_SYMBOL(ib_alloc_fmr
);
1156 int ib_unmap_fmr(struct list_head
*fmr_list
)
1160 if (list_empty(fmr_list
))
1163 fmr
= list_entry(fmr_list
->next
, struct ib_fmr
, list
);
1164 return fmr
->device
->unmap_fmr(fmr_list
);
1166 EXPORT_SYMBOL(ib_unmap_fmr
);
1168 int ib_dealloc_fmr(struct ib_fmr
*fmr
)
1174 ret
= fmr
->device
->dealloc_fmr(fmr
);
1176 atomic_dec(&pd
->usecnt
);
1180 EXPORT_SYMBOL(ib_dealloc_fmr
);
1182 /* Multicast groups */
1184 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
)
1186 if (!qp
->device
->attach_mcast
)
1188 if (gid
->raw
[0] != 0xff || qp
->qp_type
!= IB_QPT_UD
)
1191 return qp
->device
->attach_mcast(qp
, gid
, lid
);
1193 EXPORT_SYMBOL(ib_attach_mcast
);
1195 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
)
1197 if (!qp
->device
->detach_mcast
)
1199 if (gid
->raw
[0] != 0xff || qp
->qp_type
!= IB_QPT_UD
)
1202 return qp
->device
->detach_mcast(qp
, gid
, lid
);
1204 EXPORT_SYMBOL(ib_detach_mcast
);
1206 struct ib_xrcd
*ib_alloc_xrcd(struct ib_device
*device
)
1208 struct ib_xrcd
*xrcd
;
1210 if (!device
->alloc_xrcd
)
1211 return ERR_PTR(-ENOSYS
);
1213 xrcd
= device
->alloc_xrcd(device
, NULL
, NULL
);
1214 if (!IS_ERR(xrcd
)) {
1215 xrcd
->device
= device
;
1217 atomic_set(&xrcd
->usecnt
, 0);
1218 mutex_init(&xrcd
->tgt_qp_mutex
);
1219 INIT_LIST_HEAD(&xrcd
->tgt_qp_list
);
1224 EXPORT_SYMBOL(ib_alloc_xrcd
);
1226 int ib_dealloc_xrcd(struct ib_xrcd
*xrcd
)
1231 if (atomic_read(&xrcd
->usecnt
))
1234 while (!list_empty(&xrcd
->tgt_qp_list
)) {
1235 qp
= list_entry(xrcd
->tgt_qp_list
.next
, struct ib_qp
, xrcd_list
);
1236 ret
= ib_destroy_qp(qp
);
1241 return xrcd
->device
->dealloc_xrcd(xrcd
);
1243 EXPORT_SYMBOL(ib_dealloc_xrcd
);