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
38 * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $
41 #include <linux/errno.h>
42 #include <linux/err.h>
43 #include <linux/string.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 enum rdma_transport_type
83 rdma_node_get_transport(enum rdma_node_type node_type
)
87 case RDMA_NODE_IB_SWITCH
:
88 case RDMA_NODE_IB_ROUTER
:
89 return RDMA_TRANSPORT_IB
;
91 return RDMA_TRANSPORT_IWARP
;
97 EXPORT_SYMBOL(rdma_node_get_transport
);
99 /* Protection domains */
101 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
)
105 pd
= device
->alloc_pd(device
, NULL
, NULL
);
110 atomic_set(&pd
->usecnt
, 0);
115 EXPORT_SYMBOL(ib_alloc_pd
);
117 int ib_dealloc_pd(struct ib_pd
*pd
)
119 if (atomic_read(&pd
->usecnt
))
122 return pd
->device
->dealloc_pd(pd
);
124 EXPORT_SYMBOL(ib_dealloc_pd
);
126 /* Address handles */
128 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
)
132 ah
= pd
->device
->create_ah(pd
, ah_attr
);
135 ah
->device
= pd
->device
;
138 atomic_inc(&pd
->usecnt
);
143 EXPORT_SYMBOL(ib_create_ah
);
145 int ib_init_ah_from_wc(struct ib_device
*device
, u8 port_num
, struct ib_wc
*wc
,
146 struct ib_grh
*grh
, struct ib_ah_attr
*ah_attr
)
152 memset(ah_attr
, 0, sizeof *ah_attr
);
153 ah_attr
->dlid
= wc
->slid
;
154 ah_attr
->sl
= wc
->sl
;
155 ah_attr
->src_path_bits
= wc
->dlid_path_bits
;
156 ah_attr
->port_num
= port_num
;
158 if (wc
->wc_flags
& IB_WC_GRH
) {
159 ah_attr
->ah_flags
= IB_AH_GRH
;
160 ah_attr
->grh
.dgid
= grh
->sgid
;
162 ret
= ib_find_cached_gid(device
, &grh
->dgid
, &port_num
,
167 ah_attr
->grh
.sgid_index
= (u8
) gid_index
;
168 flow_class
= be32_to_cpu(grh
->version_tclass_flow
);
169 ah_attr
->grh
.flow_label
= flow_class
& 0xFFFFF;
170 ah_attr
->grh
.hop_limit
= 0xFF;
171 ah_attr
->grh
.traffic_class
= (flow_class
>> 20) & 0xFF;
175 EXPORT_SYMBOL(ib_init_ah_from_wc
);
177 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, struct ib_wc
*wc
,
178 struct ib_grh
*grh
, u8 port_num
)
180 struct ib_ah_attr ah_attr
;
183 ret
= ib_init_ah_from_wc(pd
->device
, port_num
, wc
, grh
, &ah_attr
);
187 return ib_create_ah(pd
, &ah_attr
);
189 EXPORT_SYMBOL(ib_create_ah_from_wc
);
191 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
)
193 return ah
->device
->modify_ah
?
194 ah
->device
->modify_ah(ah
, ah_attr
) :
197 EXPORT_SYMBOL(ib_modify_ah
);
199 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
)
201 return ah
->device
->query_ah
?
202 ah
->device
->query_ah(ah
, ah_attr
) :
205 EXPORT_SYMBOL(ib_query_ah
);
207 int ib_destroy_ah(struct ib_ah
*ah
)
213 ret
= ah
->device
->destroy_ah(ah
);
215 atomic_dec(&pd
->usecnt
);
219 EXPORT_SYMBOL(ib_destroy_ah
);
221 /* Shared receive queues */
223 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
224 struct ib_srq_init_attr
*srq_init_attr
)
228 if (!pd
->device
->create_srq
)
229 return ERR_PTR(-ENOSYS
);
231 srq
= pd
->device
->create_srq(pd
, srq_init_attr
, NULL
);
234 srq
->device
= pd
->device
;
237 srq
->event_handler
= srq_init_attr
->event_handler
;
238 srq
->srq_context
= srq_init_attr
->srq_context
;
239 atomic_inc(&pd
->usecnt
);
240 atomic_set(&srq
->usecnt
, 0);
245 EXPORT_SYMBOL(ib_create_srq
);
247 int ib_modify_srq(struct ib_srq
*srq
,
248 struct ib_srq_attr
*srq_attr
,
249 enum ib_srq_attr_mask srq_attr_mask
)
251 return srq
->device
->modify_srq
?
252 srq
->device
->modify_srq(srq
, srq_attr
, srq_attr_mask
, NULL
) :
255 EXPORT_SYMBOL(ib_modify_srq
);
257 int ib_query_srq(struct ib_srq
*srq
,
258 struct ib_srq_attr
*srq_attr
)
260 return srq
->device
->query_srq
?
261 srq
->device
->query_srq(srq
, srq_attr
) : -ENOSYS
;
263 EXPORT_SYMBOL(ib_query_srq
);
265 int ib_destroy_srq(struct ib_srq
*srq
)
270 if (atomic_read(&srq
->usecnt
))
275 ret
= srq
->device
->destroy_srq(srq
);
277 atomic_dec(&pd
->usecnt
);
281 EXPORT_SYMBOL(ib_destroy_srq
);
285 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
286 struct ib_qp_init_attr
*qp_init_attr
)
290 qp
= pd
->device
->create_qp(pd
, qp_init_attr
, NULL
);
293 qp
->device
= pd
->device
;
295 qp
->send_cq
= qp_init_attr
->send_cq
;
296 qp
->recv_cq
= qp_init_attr
->recv_cq
;
297 qp
->srq
= qp_init_attr
->srq
;
299 qp
->event_handler
= qp_init_attr
->event_handler
;
300 qp
->qp_context
= qp_init_attr
->qp_context
;
301 qp
->qp_type
= qp_init_attr
->qp_type
;
302 atomic_inc(&pd
->usecnt
);
303 atomic_inc(&qp_init_attr
->send_cq
->usecnt
);
304 atomic_inc(&qp_init_attr
->recv_cq
->usecnt
);
305 if (qp_init_attr
->srq
)
306 atomic_inc(&qp_init_attr
->srq
->usecnt
);
311 EXPORT_SYMBOL(ib_create_qp
);
313 static const struct {
315 enum ib_qp_attr_mask req_param
[IB_QPT_RAW_ETY
+ 1];
316 enum ib_qp_attr_mask opt_param
[IB_QPT_RAW_ETY
+ 1];
317 } qp_state_table
[IB_QPS_ERR
+ 1][IB_QPS_ERR
+ 1] = {
319 [IB_QPS_RESET
] = { .valid
= 1 },
320 [IB_QPS_ERR
] = { .valid
= 1 },
324 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
327 [IB_QPT_UC
] = (IB_QP_PKEY_INDEX
|
330 [IB_QPT_RC
] = (IB_QP_PKEY_INDEX
|
333 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
335 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
341 [IB_QPS_RESET
] = { .valid
= 1 },
342 [IB_QPS_ERR
] = { .valid
= 1 },
346 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
349 [IB_QPT_UC
] = (IB_QP_PKEY_INDEX
|
352 [IB_QPT_RC
] = (IB_QP_PKEY_INDEX
|
355 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
357 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
364 [IB_QPT_UC
] = (IB_QP_AV
|
368 [IB_QPT_RC
] = (IB_QP_AV
|
372 IB_QP_MAX_DEST_RD_ATOMIC
|
373 IB_QP_MIN_RNR_TIMER
),
376 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
378 [IB_QPT_UC
] = (IB_QP_ALT_PATH
|
381 [IB_QPT_RC
] = (IB_QP_ALT_PATH
|
384 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
386 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
392 [IB_QPS_RESET
] = { .valid
= 1 },
393 [IB_QPS_ERR
] = { .valid
= 1 },
397 [IB_QPT_UD
] = IB_QP_SQ_PSN
,
398 [IB_QPT_UC
] = IB_QP_SQ_PSN
,
399 [IB_QPT_RC
] = (IB_QP_TIMEOUT
|
403 IB_QP_MAX_QP_RD_ATOMIC
),
404 [IB_QPT_SMI
] = IB_QP_SQ_PSN
,
405 [IB_QPT_GSI
] = IB_QP_SQ_PSN
,
408 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
410 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
413 IB_QP_PATH_MIG_STATE
),
414 [IB_QPT_RC
] = (IB_QP_CUR_STATE
|
417 IB_QP_MIN_RNR_TIMER
|
418 IB_QP_PATH_MIG_STATE
),
419 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
421 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
427 [IB_QPS_RESET
] = { .valid
= 1 },
428 [IB_QPS_ERR
] = { .valid
= 1 },
432 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
434 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
437 IB_QP_PATH_MIG_STATE
),
438 [IB_QPT_RC
] = (IB_QP_CUR_STATE
|
441 IB_QP_PATH_MIG_STATE
|
442 IB_QP_MIN_RNR_TIMER
),
443 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
445 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
452 [IB_QPT_UD
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
453 [IB_QPT_UC
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
454 [IB_QPT_RC
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
455 [IB_QPT_SMI
] = IB_QP_EN_SQD_ASYNC_NOTIFY
,
456 [IB_QPT_GSI
] = IB_QP_EN_SQD_ASYNC_NOTIFY
461 [IB_QPS_RESET
] = { .valid
= 1 },
462 [IB_QPS_ERR
] = { .valid
= 1 },
466 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
468 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
471 IB_QP_PATH_MIG_STATE
),
472 [IB_QPT_RC
] = (IB_QP_CUR_STATE
|
475 IB_QP_MIN_RNR_TIMER
|
476 IB_QP_PATH_MIG_STATE
),
477 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
479 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
486 [IB_QPT_UD
] = (IB_QP_PKEY_INDEX
|
488 [IB_QPT_UC
] = (IB_QP_AV
|
492 IB_QP_PATH_MIG_STATE
),
493 [IB_QPT_RC
] = (IB_QP_PORT
|
498 IB_QP_MAX_QP_RD_ATOMIC
|
499 IB_QP_MAX_DEST_RD_ATOMIC
|
503 IB_QP_MIN_RNR_TIMER
|
504 IB_QP_PATH_MIG_STATE
),
505 [IB_QPT_SMI
] = (IB_QP_PKEY_INDEX
|
507 [IB_QPT_GSI
] = (IB_QP_PKEY_INDEX
|
513 [IB_QPS_RESET
] = { .valid
= 1 },
514 [IB_QPS_ERR
] = { .valid
= 1 },
518 [IB_QPT_UD
] = (IB_QP_CUR_STATE
|
520 [IB_QPT_UC
] = (IB_QP_CUR_STATE
|
522 [IB_QPT_SMI
] = (IB_QP_CUR_STATE
|
524 [IB_QPT_GSI
] = (IB_QP_CUR_STATE
|
530 [IB_QPS_RESET
] = { .valid
= 1 },
531 [IB_QPS_ERR
] = { .valid
= 1 }
535 int ib_modify_qp_is_ok(enum ib_qp_state cur_state
, enum ib_qp_state next_state
,
536 enum ib_qp_type type
, enum ib_qp_attr_mask mask
)
538 enum ib_qp_attr_mask req_param
, opt_param
;
540 if (cur_state
< 0 || cur_state
> IB_QPS_ERR
||
541 next_state
< 0 || next_state
> IB_QPS_ERR
)
544 if (mask
& IB_QP_CUR_STATE
&&
545 cur_state
!= IB_QPS_RTR
&& cur_state
!= IB_QPS_RTS
&&
546 cur_state
!= IB_QPS_SQD
&& cur_state
!= IB_QPS_SQE
)
549 if (!qp_state_table
[cur_state
][next_state
].valid
)
552 req_param
= qp_state_table
[cur_state
][next_state
].req_param
[type
];
553 opt_param
= qp_state_table
[cur_state
][next_state
].opt_param
[type
];
555 if ((mask
& req_param
) != req_param
)
558 if (mask
& ~(req_param
| opt_param
| IB_QP_STATE
))
563 EXPORT_SYMBOL(ib_modify_qp_is_ok
);
565 int ib_modify_qp(struct ib_qp
*qp
,
566 struct ib_qp_attr
*qp_attr
,
569 return qp
->device
->modify_qp(qp
, qp_attr
, qp_attr_mask
, NULL
);
571 EXPORT_SYMBOL(ib_modify_qp
);
573 int ib_query_qp(struct ib_qp
*qp
,
574 struct ib_qp_attr
*qp_attr
,
576 struct ib_qp_init_attr
*qp_init_attr
)
578 return qp
->device
->query_qp
?
579 qp
->device
->query_qp(qp
, qp_attr
, qp_attr_mask
, qp_init_attr
) :
582 EXPORT_SYMBOL(ib_query_qp
);
584 int ib_destroy_qp(struct ib_qp
*qp
)
587 struct ib_cq
*scq
, *rcq
;
596 ret
= qp
->device
->destroy_qp(qp
);
598 atomic_dec(&pd
->usecnt
);
599 atomic_dec(&scq
->usecnt
);
600 atomic_dec(&rcq
->usecnt
);
602 atomic_dec(&srq
->usecnt
);
607 EXPORT_SYMBOL(ib_destroy_qp
);
609 /* Completion queues */
611 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
612 ib_comp_handler comp_handler
,
613 void (*event_handler
)(struct ib_event
*, void *),
614 void *cq_context
, int cqe
, int comp_vector
)
618 cq
= device
->create_cq(device
, cqe
, comp_vector
, NULL
, NULL
);
623 cq
->comp_handler
= comp_handler
;
624 cq
->event_handler
= event_handler
;
625 cq
->cq_context
= cq_context
;
626 atomic_set(&cq
->usecnt
, 0);
631 EXPORT_SYMBOL(ib_create_cq
);
633 int ib_modify_cq(struct ib_cq
*cq
, u16 cq_count
, u16 cq_period
)
635 return cq
->device
->modify_cq
?
636 cq
->device
->modify_cq(cq
, cq_count
, cq_period
) : -ENOSYS
;
638 EXPORT_SYMBOL(ib_modify_cq
);
640 int ib_destroy_cq(struct ib_cq
*cq
)
642 if (atomic_read(&cq
->usecnt
))
645 return cq
->device
->destroy_cq(cq
);
647 EXPORT_SYMBOL(ib_destroy_cq
);
649 int ib_resize_cq(struct ib_cq
*cq
, int cqe
)
651 return cq
->device
->resize_cq
?
652 cq
->device
->resize_cq(cq
, cqe
, NULL
) : -ENOSYS
;
654 EXPORT_SYMBOL(ib_resize_cq
);
658 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
)
662 mr
= pd
->device
->get_dma_mr(pd
, mr_access_flags
);
665 mr
->device
= pd
->device
;
668 atomic_inc(&pd
->usecnt
);
669 atomic_set(&mr
->usecnt
, 0);
674 EXPORT_SYMBOL(ib_get_dma_mr
);
676 struct ib_mr
*ib_reg_phys_mr(struct ib_pd
*pd
,
677 struct ib_phys_buf
*phys_buf_array
,
684 if (!pd
->device
->reg_phys_mr
)
685 return ERR_PTR(-ENOSYS
);
687 mr
= pd
->device
->reg_phys_mr(pd
, phys_buf_array
, num_phys_buf
,
688 mr_access_flags
, iova_start
);
691 mr
->device
= pd
->device
;
694 atomic_inc(&pd
->usecnt
);
695 atomic_set(&mr
->usecnt
, 0);
700 EXPORT_SYMBOL(ib_reg_phys_mr
);
702 int ib_rereg_phys_mr(struct ib_mr
*mr
,
705 struct ib_phys_buf
*phys_buf_array
,
710 struct ib_pd
*old_pd
;
713 if (!mr
->device
->rereg_phys_mr
)
716 if (atomic_read(&mr
->usecnt
))
721 ret
= mr
->device
->rereg_phys_mr(mr
, mr_rereg_mask
, pd
,
722 phys_buf_array
, num_phys_buf
,
723 mr_access_flags
, iova_start
);
725 if (!ret
&& (mr_rereg_mask
& IB_MR_REREG_PD
)) {
726 atomic_dec(&old_pd
->usecnt
);
727 atomic_inc(&pd
->usecnt
);
732 EXPORT_SYMBOL(ib_rereg_phys_mr
);
734 int ib_query_mr(struct ib_mr
*mr
, struct ib_mr_attr
*mr_attr
)
736 return mr
->device
->query_mr
?
737 mr
->device
->query_mr(mr
, mr_attr
) : -ENOSYS
;
739 EXPORT_SYMBOL(ib_query_mr
);
741 int ib_dereg_mr(struct ib_mr
*mr
)
746 if (atomic_read(&mr
->usecnt
))
750 ret
= mr
->device
->dereg_mr(mr
);
752 atomic_dec(&pd
->usecnt
);
756 EXPORT_SYMBOL(ib_dereg_mr
);
760 struct ib_mw
*ib_alloc_mw(struct ib_pd
*pd
)
764 if (!pd
->device
->alloc_mw
)
765 return ERR_PTR(-ENOSYS
);
767 mw
= pd
->device
->alloc_mw(pd
);
769 mw
->device
= pd
->device
;
772 atomic_inc(&pd
->usecnt
);
777 EXPORT_SYMBOL(ib_alloc_mw
);
779 int ib_dealloc_mw(struct ib_mw
*mw
)
785 ret
= mw
->device
->dealloc_mw(mw
);
787 atomic_dec(&pd
->usecnt
);
791 EXPORT_SYMBOL(ib_dealloc_mw
);
793 /* "Fast" memory regions */
795 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
797 struct ib_fmr_attr
*fmr_attr
)
801 if (!pd
->device
->alloc_fmr
)
802 return ERR_PTR(-ENOSYS
);
804 fmr
= pd
->device
->alloc_fmr(pd
, mr_access_flags
, fmr_attr
);
806 fmr
->device
= pd
->device
;
808 atomic_inc(&pd
->usecnt
);
813 EXPORT_SYMBOL(ib_alloc_fmr
);
815 int ib_unmap_fmr(struct list_head
*fmr_list
)
819 if (list_empty(fmr_list
))
822 fmr
= list_entry(fmr_list
->next
, struct ib_fmr
, list
);
823 return fmr
->device
->unmap_fmr(fmr_list
);
825 EXPORT_SYMBOL(ib_unmap_fmr
);
827 int ib_dealloc_fmr(struct ib_fmr
*fmr
)
833 ret
= fmr
->device
->dealloc_fmr(fmr
);
835 atomic_dec(&pd
->usecnt
);
839 EXPORT_SYMBOL(ib_dealloc_fmr
);
841 /* Multicast groups */
843 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
)
845 if (!qp
->device
->attach_mcast
)
847 if (gid
->raw
[0] != 0xff || qp
->qp_type
!= IB_QPT_UD
)
850 return qp
->device
->attach_mcast(qp
, gid
, lid
);
852 EXPORT_SYMBOL(ib_attach_mcast
);
854 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
)
856 if (!qp
->device
->detach_mcast
)
858 if (gid
->raw
[0] != 0xff || qp
->qp_type
!= IB_QPT_UD
)
861 return qp
->device
->detach_mcast(qp
, gid
, lid
);
863 EXPORT_SYMBOL(ib_detach_mcast
);