2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * $Id: sa_query.c 1389 2004-12-27 22:56:47Z roland $
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/err.h>
38 #include <linux/random.h>
39 #include <linux/spinlock.h>
40 #include <linux/slab.h>
41 #include <linux/pci.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/kref.h>
44 #include <linux/idr.h>
49 MODULE_AUTHOR("Roland Dreier");
50 MODULE_DESCRIPTION("InfiniBand subnet administration query support");
51 MODULE_LICENSE("Dual BSD/GPL");
59 struct ib_mad_agent
*agent
;
60 struct ib_sa_sm_ah
*sm_ah
;
61 struct work_struct update_task
;
67 int start_port
, end_port
;
68 struct ib_event_handler event_handler
;
69 struct ib_sa_port port
[0];
73 void (*callback
)(struct ib_sa_query
*, int, struct ib_sa_mad
*);
74 void (*release
)(struct ib_sa_query
*);
75 struct ib_sa_port
*port
;
76 struct ib_sa_mad
*mad
;
77 struct ib_sa_sm_ah
*sm_ah
;
78 DECLARE_PCI_UNMAP_ADDR(mapping
)
82 struct ib_sa_path_query
{
83 void (*callback
)(int, struct ib_sa_path_rec
*, void *);
85 struct ib_sa_query sa_query
;
88 struct ib_sa_mcmember_query
{
89 void (*callback
)(int, struct ib_sa_mcmember_rec
*, void *);
91 struct ib_sa_query sa_query
;
94 static void ib_sa_add_one(struct ib_device
*device
);
95 static void ib_sa_remove_one(struct ib_device
*device
);
97 static struct ib_client sa_client
= {
100 .remove
= ib_sa_remove_one
103 static spinlock_t idr_lock
;
104 static DEFINE_IDR(query_idr
);
106 static spinlock_t tid_lock
;
110 IB_SA_ATTR_CLASS_PORTINFO
= 0x01,
111 IB_SA_ATTR_NOTICE
= 0x02,
112 IB_SA_ATTR_INFORM_INFO
= 0x03,
113 IB_SA_ATTR_NODE_REC
= 0x11,
114 IB_SA_ATTR_PORT_INFO_REC
= 0x12,
115 IB_SA_ATTR_SL2VL_REC
= 0x13,
116 IB_SA_ATTR_SWITCH_REC
= 0x14,
117 IB_SA_ATTR_LINEAR_FDB_REC
= 0x15,
118 IB_SA_ATTR_RANDOM_FDB_REC
= 0x16,
119 IB_SA_ATTR_MCAST_FDB_REC
= 0x17,
120 IB_SA_ATTR_SM_INFO_REC
= 0x18,
121 IB_SA_ATTR_LINK_REC
= 0x20,
122 IB_SA_ATTR_GUID_INFO_REC
= 0x30,
123 IB_SA_ATTR_SERVICE_REC
= 0x31,
124 IB_SA_ATTR_PARTITION_REC
= 0x33,
125 IB_SA_ATTR_RANGE_REC
= 0x34,
126 IB_SA_ATTR_PATH_REC
= 0x35,
127 IB_SA_ATTR_VL_ARB_REC
= 0x36,
128 IB_SA_ATTR_MC_GROUP_REC
= 0x37,
129 IB_SA_ATTR_MC_MEMBER_REC
= 0x38,
130 IB_SA_ATTR_TRACE_REC
= 0x39,
131 IB_SA_ATTR_MULTI_PATH_REC
= 0x3a,
132 IB_SA_ATTR_SERVICE_ASSOC_REC
= 0x3b
135 #define PATH_REC_FIELD(field) \
136 .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \
137 .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \
138 .field_name = "sa_path_rec:" #field
140 static const struct ib_field path_rec_table
[] = {
149 { PATH_REC_FIELD(dgid
),
153 { PATH_REC_FIELD(sgid
),
157 { PATH_REC_FIELD(dlid
),
161 { PATH_REC_FIELD(slid
),
165 { PATH_REC_FIELD(raw_traffic
),
173 { PATH_REC_FIELD(flow_label
),
177 { PATH_REC_FIELD(hop_limit
),
181 { PATH_REC_FIELD(traffic_class
),
185 { PATH_REC_FIELD(reversible
),
189 { PATH_REC_FIELD(numb_path
),
193 { PATH_REC_FIELD(pkey
),
201 { PATH_REC_FIELD(sl
),
205 { PATH_REC_FIELD(mtu_selector
),
209 { PATH_REC_FIELD(mtu
),
213 { PATH_REC_FIELD(rate_selector
),
217 { PATH_REC_FIELD(rate
),
221 { PATH_REC_FIELD(packet_life_time_selector
),
225 { PATH_REC_FIELD(packet_life_time
),
229 { PATH_REC_FIELD(preference
),
239 #define MCMEMBER_REC_FIELD(field) \
240 .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \
241 .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \
242 .field_name = "sa_mcmember_rec:" #field
244 static const struct ib_field mcmember_rec_table
[] = {
245 { MCMEMBER_REC_FIELD(mgid
),
249 { MCMEMBER_REC_FIELD(port_gid
),
253 { MCMEMBER_REC_FIELD(qkey
),
257 { MCMEMBER_REC_FIELD(mlid
),
261 { MCMEMBER_REC_FIELD(mtu_selector
),
265 { MCMEMBER_REC_FIELD(mtu
),
269 { MCMEMBER_REC_FIELD(traffic_class
),
273 { MCMEMBER_REC_FIELD(pkey
),
277 { MCMEMBER_REC_FIELD(rate_selector
),
281 { MCMEMBER_REC_FIELD(rate
),
285 { MCMEMBER_REC_FIELD(packet_life_time_selector
),
289 { MCMEMBER_REC_FIELD(packet_life_time
),
293 { MCMEMBER_REC_FIELD(sl
),
297 { MCMEMBER_REC_FIELD(flow_label
),
301 { MCMEMBER_REC_FIELD(hop_limit
),
305 { MCMEMBER_REC_FIELD(scope
),
309 { MCMEMBER_REC_FIELD(join_state
),
313 { MCMEMBER_REC_FIELD(proxy_join
),
323 static void free_sm_ah(struct kref
*kref
)
325 struct ib_sa_sm_ah
*sm_ah
= container_of(kref
, struct ib_sa_sm_ah
, ref
);
327 ib_destroy_ah(sm_ah
->ah
);
331 static void update_sm_ah(void *port_ptr
)
333 struct ib_sa_port
*port
= port_ptr
;
334 struct ib_sa_sm_ah
*new_ah
, *old_ah
;
335 struct ib_port_attr port_attr
;
336 struct ib_ah_attr ah_attr
;
338 if (ib_query_port(port
->agent
->device
, port
->port_num
, &port_attr
)) {
339 printk(KERN_WARNING
"Couldn't query port\n");
343 new_ah
= kmalloc(sizeof *new_ah
, GFP_KERNEL
);
345 printk(KERN_WARNING
"Couldn't allocate new SM AH\n");
349 kref_init(&new_ah
->ref
);
351 memset(&ah_attr
, 0, sizeof ah_attr
);
352 ah_attr
.dlid
= port_attr
.sm_lid
;
353 ah_attr
.sl
= port_attr
.sm_sl
;
354 ah_attr
.port_num
= port
->port_num
;
356 new_ah
->ah
= ib_create_ah(port
->agent
->qp
->pd
, &ah_attr
);
357 if (IS_ERR(new_ah
->ah
)) {
358 printk(KERN_WARNING
"Couldn't create new SM AH\n");
363 spin_lock_irq(&port
->ah_lock
);
364 old_ah
= port
->sm_ah
;
365 port
->sm_ah
= new_ah
;
366 spin_unlock_irq(&port
->ah_lock
);
369 kref_put(&old_ah
->ref
, free_sm_ah
);
372 static void ib_sa_event(struct ib_event_handler
*handler
, struct ib_event
*event
)
374 if (event
->event
== IB_EVENT_PORT_ERR
||
375 event
->event
== IB_EVENT_PORT_ACTIVE
||
376 event
->event
== IB_EVENT_LID_CHANGE
||
377 event
->event
== IB_EVENT_PKEY_CHANGE
||
378 event
->event
== IB_EVENT_SM_CHANGE
) {
379 struct ib_sa_device
*sa_dev
=
380 ib_get_client_data(event
->device
, &sa_client
);
382 schedule_work(&sa_dev
->port
[event
->element
.port_num
-
383 sa_dev
->start_port
].update_task
);
388 * ib_sa_cancel_query - try to cancel an SA query
389 * @id:ID of query to cancel
390 * @query:query pointer to cancel
392 * Try to cancel an SA query. If the id and query don't match up or
393 * the query has already completed, nothing is done. Otherwise the
394 * query is canceled and will complete with a status of -EINTR.
396 void ib_sa_cancel_query(int id
, struct ib_sa_query
*query
)
399 struct ib_mad_agent
*agent
;
401 spin_lock_irqsave(&idr_lock
, flags
);
402 if (idr_find(&query_idr
, id
) != query
) {
403 spin_unlock_irqrestore(&idr_lock
, flags
);
406 agent
= query
->port
->agent
;
407 spin_unlock_irqrestore(&idr_lock
, flags
);
409 ib_cancel_mad(agent
, id
);
411 EXPORT_SYMBOL(ib_sa_cancel_query
);
413 static void init_mad(struct ib_sa_mad
*mad
, struct ib_mad_agent
*agent
)
417 memset(mad
, 0, sizeof *mad
);
419 mad
->mad_hdr
.base_version
= IB_MGMT_BASE_VERSION
;
420 mad
->mad_hdr
.mgmt_class
= IB_MGMT_CLASS_SUBN_ADM
;
421 mad
->mad_hdr
.class_version
= IB_SA_CLASS_VERSION
;
423 spin_lock_irqsave(&tid_lock
, flags
);
425 cpu_to_be64(((u64
) agent
->hi_tid
) << 32 | tid
++);
426 spin_unlock_irqrestore(&tid_lock
, flags
);
429 static int send_mad(struct ib_sa_query
*query
, int timeout_ms
)
431 struct ib_sa_port
*port
= query
->port
;
434 struct ib_sge gather_list
;
435 struct ib_send_wr
*bad_wr
, wr
= {
436 .opcode
= IB_WR_SEND
,
437 .sg_list
= &gather_list
,
439 .send_flags
= IB_SEND_SIGNALED
,
442 .mad_hdr
= &query
->mad
->mad_hdr
,
444 .remote_qkey
= IB_QP1_QKEY
,
445 .timeout_ms
= timeout_ms
,
452 if (!idr_pre_get(&query_idr
, GFP_ATOMIC
))
454 spin_lock_irqsave(&idr_lock
, flags
);
455 ret
= idr_get_new(&query_idr
, query
, &query
->id
);
456 spin_unlock_irqrestore(&idr_lock
, flags
);
462 wr
.wr_id
= query
->id
;
464 spin_lock_irqsave(&port
->ah_lock
, flags
);
465 kref_get(&port
->sm_ah
->ref
);
466 query
->sm_ah
= port
->sm_ah
;
467 wr
.wr
.ud
.ah
= port
->sm_ah
->ah
;
468 spin_unlock_irqrestore(&port
->ah_lock
, flags
);
470 gather_list
.addr
= dma_map_single(port
->agent
->device
->dma_device
,
472 sizeof (struct ib_sa_mad
),
474 gather_list
.length
= sizeof (struct ib_sa_mad
);
475 gather_list
.lkey
= port
->agent
->mr
->lkey
;
476 pci_unmap_addr_set(query
, mapping
, gather_list
.addr
);
478 ret
= ib_post_send_mad(port
->agent
, &wr
, &bad_wr
);
480 dma_unmap_single(port
->agent
->device
->dma_device
,
481 pci_unmap_addr(query
, mapping
),
482 sizeof (struct ib_sa_mad
),
484 kref_put(&query
->sm_ah
->ref
, free_sm_ah
);
485 spin_lock_irqsave(&idr_lock
, flags
);
486 idr_remove(&query_idr
, query
->id
);
487 spin_unlock_irqrestore(&idr_lock
, flags
);
491 * It's not safe to dereference query any more, because the
492 * send may already have completed and freed the query in
493 * another context. So use wr.wr_id, which has a copy of the
496 return ret
? ret
: wr
.wr_id
;
499 static void ib_sa_path_rec_callback(struct ib_sa_query
*sa_query
,
501 struct ib_sa_mad
*mad
)
503 struct ib_sa_path_query
*query
=
504 container_of(sa_query
, struct ib_sa_path_query
, sa_query
);
507 struct ib_sa_path_rec rec
;
509 ib_unpack(path_rec_table
, ARRAY_SIZE(path_rec_table
),
511 query
->callback(status
, &rec
, query
->context
);
513 query
->callback(status
, NULL
, query
->context
);
516 static void ib_sa_path_rec_release(struct ib_sa_query
*sa_query
)
518 kfree(sa_query
->mad
);
519 kfree(container_of(sa_query
, struct ib_sa_path_query
, sa_query
));
523 * ib_sa_path_rec_get - Start a Path get query
524 * @device:device to send query on
525 * @port_num: port number to send query on
526 * @rec:Path Record to send in query
527 * @comp_mask:component mask to send in query
528 * @timeout_ms:time to wait for response
529 * @gfp_mask:GFP mask to use for internal allocations
530 * @callback:function called when query completes, times out or is
532 * @context:opaque user context passed to callback
533 * @sa_query:query context, used to cancel query
535 * Send a Path Record Get query to the SA to look up a path. The
536 * callback function will be called when the query completes (or
537 * fails); status is 0 for a successful response, -EINTR if the query
538 * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error
539 * occurred sending the query. The resp parameter of the callback is
540 * only valid if status is 0.
542 * If the return value of ib_sa_path_rec_get() is negative, it is an
543 * error code. Otherwise it is a query ID that can be used to cancel
546 int ib_sa_path_rec_get(struct ib_device
*device
, u8 port_num
,
547 struct ib_sa_path_rec
*rec
,
548 ib_sa_comp_mask comp_mask
,
549 int timeout_ms
, int gfp_mask
,
550 void (*callback
)(int status
,
551 struct ib_sa_path_rec
*resp
,
554 struct ib_sa_query
**sa_query
)
556 struct ib_sa_path_query
*query
;
557 struct ib_sa_device
*sa_dev
= ib_get_client_data(device
, &sa_client
);
558 struct ib_sa_port
*port
= &sa_dev
->port
[port_num
- sa_dev
->start_port
];
559 struct ib_mad_agent
*agent
= port
->agent
;
562 query
= kmalloc(sizeof *query
, gfp_mask
);
565 query
->sa_query
.mad
= kmalloc(sizeof *query
->sa_query
.mad
, gfp_mask
);
566 if (!query
->sa_query
.mad
) {
571 query
->callback
= callback
;
572 query
->context
= context
;
574 init_mad(query
->sa_query
.mad
, agent
);
576 query
->sa_query
.callback
= callback
? ib_sa_path_rec_callback
: NULL
;
577 query
->sa_query
.release
= ib_sa_path_rec_release
;
578 query
->sa_query
.port
= port
;
579 query
->sa_query
.mad
->mad_hdr
.method
= IB_MGMT_METHOD_GET
;
580 query
->sa_query
.mad
->mad_hdr
.attr_id
= cpu_to_be16(IB_SA_ATTR_PATH_REC
);
581 query
->sa_query
.mad
->sa_hdr
.comp_mask
= comp_mask
;
583 ib_pack(path_rec_table
, ARRAY_SIZE(path_rec_table
),
584 rec
, query
->sa_query
.mad
->data
);
586 *sa_query
= &query
->sa_query
;
588 ret
= send_mad(&query
->sa_query
, timeout_ms
);
591 kfree(query
->sa_query
.mad
);
597 EXPORT_SYMBOL(ib_sa_path_rec_get
);
599 static void ib_sa_mcmember_rec_callback(struct ib_sa_query
*sa_query
,
601 struct ib_sa_mad
*mad
)
603 struct ib_sa_mcmember_query
*query
=
604 container_of(sa_query
, struct ib_sa_mcmember_query
, sa_query
);
607 struct ib_sa_mcmember_rec rec
;
609 ib_unpack(mcmember_rec_table
, ARRAY_SIZE(mcmember_rec_table
),
611 query
->callback(status
, &rec
, query
->context
);
613 query
->callback(status
, NULL
, query
->context
);
616 static void ib_sa_mcmember_rec_release(struct ib_sa_query
*sa_query
)
618 kfree(sa_query
->mad
);
619 kfree(container_of(sa_query
, struct ib_sa_mcmember_query
, sa_query
));
622 int ib_sa_mcmember_rec_query(struct ib_device
*device
, u8 port_num
,
624 struct ib_sa_mcmember_rec
*rec
,
625 ib_sa_comp_mask comp_mask
,
626 int timeout_ms
, int gfp_mask
,
627 void (*callback
)(int status
,
628 struct ib_sa_mcmember_rec
*resp
,
631 struct ib_sa_query
**sa_query
)
633 struct ib_sa_mcmember_query
*query
;
634 struct ib_sa_device
*sa_dev
= ib_get_client_data(device
, &sa_client
);
635 struct ib_sa_port
*port
= &sa_dev
->port
[port_num
- sa_dev
->start_port
];
636 struct ib_mad_agent
*agent
= port
->agent
;
639 query
= kmalloc(sizeof *query
, gfp_mask
);
642 query
->sa_query
.mad
= kmalloc(sizeof *query
->sa_query
.mad
, gfp_mask
);
643 if (!query
->sa_query
.mad
) {
648 query
->callback
= callback
;
649 query
->context
= context
;
651 init_mad(query
->sa_query
.mad
, agent
);
653 query
->sa_query
.callback
= callback
? ib_sa_mcmember_rec_callback
: NULL
;
654 query
->sa_query
.release
= ib_sa_mcmember_rec_release
;
655 query
->sa_query
.port
= port
;
656 query
->sa_query
.mad
->mad_hdr
.method
= method
;
657 query
->sa_query
.mad
->mad_hdr
.attr_id
= cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC
);
658 query
->sa_query
.mad
->sa_hdr
.comp_mask
= comp_mask
;
660 ib_pack(mcmember_rec_table
, ARRAY_SIZE(mcmember_rec_table
),
661 rec
, query
->sa_query
.mad
->data
);
663 *sa_query
= &query
->sa_query
;
665 ret
= send_mad(&query
->sa_query
, timeout_ms
);
668 kfree(query
->sa_query
.mad
);
674 EXPORT_SYMBOL(ib_sa_mcmember_rec_query
);
676 static void send_handler(struct ib_mad_agent
*agent
,
677 struct ib_mad_send_wc
*mad_send_wc
)
679 struct ib_sa_query
*query
;
682 spin_lock_irqsave(&idr_lock
, flags
);
683 query
= idr_find(&query_idr
, mad_send_wc
->wr_id
);
684 spin_unlock_irqrestore(&idr_lock
, flags
);
690 switch (mad_send_wc
->status
) {
692 /* No callback -- already got recv */
694 case IB_WC_RESP_TIMEOUT_ERR
:
695 query
->callback(query
, -ETIMEDOUT
, NULL
);
697 case IB_WC_WR_FLUSH_ERR
:
698 query
->callback(query
, -EINTR
, NULL
);
701 query
->callback(query
, -EIO
, NULL
);
705 dma_unmap_single(agent
->device
->dma_device
,
706 pci_unmap_addr(query
, mapping
),
707 sizeof (struct ib_sa_mad
),
709 kref_put(&query
->sm_ah
->ref
, free_sm_ah
);
711 query
->release(query
);
713 spin_lock_irqsave(&idr_lock
, flags
);
714 idr_remove(&query_idr
, mad_send_wc
->wr_id
);
715 spin_unlock_irqrestore(&idr_lock
, flags
);
718 static void recv_handler(struct ib_mad_agent
*mad_agent
,
719 struct ib_mad_recv_wc
*mad_recv_wc
)
721 struct ib_sa_query
*query
;
724 spin_lock_irqsave(&idr_lock
, flags
);
725 query
= idr_find(&query_idr
, mad_recv_wc
->wc
->wr_id
);
726 spin_unlock_irqrestore(&idr_lock
, flags
);
728 if (query
&& query
->callback
) {
729 if (mad_recv_wc
->wc
->status
== IB_WC_SUCCESS
)
730 query
->callback(query
,
731 mad_recv_wc
->recv_buf
.mad
->mad_hdr
.status
?
733 (struct ib_sa_mad
*) mad_recv_wc
->recv_buf
.mad
);
735 query
->callback(query
, -EIO
, NULL
);
738 ib_free_recv_mad(mad_recv_wc
);
741 static void ib_sa_add_one(struct ib_device
*device
)
743 struct ib_sa_device
*sa_dev
;
746 if (device
->node_type
== IB_NODE_SWITCH
)
750 e
= device
->phys_port_cnt
;
753 sa_dev
= kmalloc(sizeof *sa_dev
+
754 (e
- s
+ 1) * sizeof (struct ib_sa_port
),
759 sa_dev
->start_port
= s
;
760 sa_dev
->end_port
= e
;
762 for (i
= 0; i
<= e
- s
; ++i
) {
763 sa_dev
->port
[i
].sm_ah
= NULL
;
764 sa_dev
->port
[i
].port_num
= i
+ s
;
765 spin_lock_init(&sa_dev
->port
[i
].ah_lock
);
767 sa_dev
->port
[i
].agent
=
768 ib_register_mad_agent(device
, i
+ s
, IB_QPT_GSI
,
769 NULL
, 0, send_handler
,
770 recv_handler
, sa_dev
);
771 if (IS_ERR(sa_dev
->port
[i
].agent
))
774 INIT_WORK(&sa_dev
->port
[i
].update_task
,
775 update_sm_ah
, &sa_dev
->port
[i
]);
778 ib_set_client_data(device
, &sa_client
, sa_dev
);
781 * We register our event handler after everything is set up,
782 * and then update our cached info after the event handler is
783 * registered to avoid any problems if a port changes state
784 * during our initialization.
787 INIT_IB_EVENT_HANDLER(&sa_dev
->event_handler
, device
, ib_sa_event
);
788 if (ib_register_event_handler(&sa_dev
->event_handler
))
791 for (i
= 0; i
<= e
- s
; ++i
)
792 update_sm_ah(&sa_dev
->port
[i
]);
798 ib_unregister_mad_agent(sa_dev
->port
[i
].agent
);
805 static void ib_sa_remove_one(struct ib_device
*device
)
807 struct ib_sa_device
*sa_dev
= ib_get_client_data(device
, &sa_client
);
813 ib_unregister_event_handler(&sa_dev
->event_handler
);
815 for (i
= 0; i
<= sa_dev
->end_port
- sa_dev
->start_port
; ++i
) {
816 ib_unregister_mad_agent(sa_dev
->port
[i
].agent
);
817 kref_put(&sa_dev
->port
[i
].sm_ah
->ref
, free_sm_ah
);
823 static int __init
ib_sa_init(void)
827 spin_lock_init(&idr_lock
);
828 spin_lock_init(&tid_lock
);
830 get_random_bytes(&tid
, sizeof tid
);
832 ret
= ib_register_client(&sa_client
);
834 printk(KERN_ERR
"Couldn't register ib_sa client\n");
839 static void __exit
ib_sa_cleanup(void)
841 ib_unregister_client(&sa_client
);
844 module_init(ib_sa_init
);
845 module_exit(ib_sa_cleanup
);