2 * Copyright (c) 2005 Voltaire Inc. All rights reserved.
3 * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved.
4 * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved.
5 * Copyright (c) 2005-2006 Intel Corporation. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/completion.h>
38 #include <linux/in6.h>
39 #include <linux/mutex.h>
40 #include <linux/random.h>
41 #include <linux/idr.h>
42 #include <linux/inetdevice.h>
43 #include <linux/slab.h>
44 #include <linux/module.h>
45 #include <net/route.h>
50 #include <rdma/rdma_cm.h>
51 #include <rdma/rdma_cm_ib.h>
52 #include <rdma/rdma_netlink.h>
53 #include <rdma/ib_cache.h>
54 #include <rdma/ib_cm.h>
55 #include <rdma/ib_sa.h>
56 #include <rdma/iw_cm.h>
58 MODULE_AUTHOR("Sean Hefty");
59 MODULE_DESCRIPTION("Generic RDMA CM Agent");
60 MODULE_LICENSE("Dual BSD/GPL");
62 #define CMA_CM_RESPONSE_TIMEOUT 20
63 #define CMA_MAX_CM_RETRIES 15
64 #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24)
65 #define CMA_IBOE_PACKET_LIFETIME 18
67 static void cma_add_one(struct ib_device
*device
);
68 static void cma_remove_one(struct ib_device
*device
);
70 static struct ib_client cma_client
= {
73 .remove
= cma_remove_one
76 static struct ib_sa_client sa_client
;
77 static struct rdma_addr_client addr_client
;
78 static LIST_HEAD(dev_list
);
79 static LIST_HEAD(listen_any_list
);
80 static DEFINE_MUTEX(lock
);
81 static struct workqueue_struct
*cma_wq
;
82 static DEFINE_IDR(sdp_ps
);
83 static DEFINE_IDR(tcp_ps
);
84 static DEFINE_IDR(udp_ps
);
85 static DEFINE_IDR(ipoib_ps
);
86 static DEFINE_IDR(ib_ps
);
89 struct list_head list
;
90 struct ib_device
*device
;
91 struct completion comp
;
93 struct list_head id_list
;
96 struct rdma_bind_list
{
98 struct hlist_head owners
;
107 * Device removal can occur at anytime, so we need extra handling to
108 * serialize notifying the user of device removal with other callbacks.
109 * We do this by disabling removal notification while a callback is in process,
110 * and reporting it after the callback completes.
112 struct rdma_id_private
{
113 struct rdma_cm_id id
;
115 struct rdma_bind_list
*bind_list
;
116 struct hlist_node node
;
117 struct list_head list
; /* listen_any_list or cma_device.list */
118 struct list_head listen_list
; /* per device listens */
119 struct cma_device
*cma_dev
;
120 struct list_head mc_list
;
123 enum rdma_cm_state state
;
125 struct mutex qp_mutex
;
127 struct completion comp
;
129 struct mutex handler_mutex
;
133 struct ib_sa_query
*query
;
151 struct cma_multicast
{
152 struct rdma_id_private
*id_priv
;
154 struct ib_sa_multicast
*ib
;
156 struct list_head list
;
158 struct sockaddr_storage addr
;
163 struct work_struct work
;
164 struct rdma_id_private
*id
;
165 enum rdma_cm_state old_state
;
166 enum rdma_cm_state new_state
;
167 struct rdma_cm_event event
;
170 struct cma_ndev_work
{
171 struct work_struct work
;
172 struct rdma_id_private
*id
;
173 struct rdma_cm_event event
;
176 struct iboe_mcast_work
{
177 struct work_struct work
;
178 struct rdma_id_private
*id
;
179 struct cma_multicast
*mc
;
192 u8 ip_version
; /* IP version: 7:4 */
194 union cma_ip_addr src_addr
;
195 union cma_ip_addr dst_addr
;
200 u8 sdp_version
; /* Major version: 7:4 */
201 u8 ip_version
; /* IP version: 7:4 */
202 u8 sdp_specific1
[10];
204 __be16 sdp_specific2
;
205 union cma_ip_addr src_addr
;
206 union cma_ip_addr dst_addr
;
214 #define CMA_VERSION 0x00
215 #define SDP_MAJ_VERSION 0x2
217 static int cma_comp(struct rdma_id_private
*id_priv
, enum rdma_cm_state comp
)
222 spin_lock_irqsave(&id_priv
->lock
, flags
);
223 ret
= (id_priv
->state
== comp
);
224 spin_unlock_irqrestore(&id_priv
->lock
, flags
);
228 static int cma_comp_exch(struct rdma_id_private
*id_priv
,
229 enum rdma_cm_state comp
, enum rdma_cm_state exch
)
234 spin_lock_irqsave(&id_priv
->lock
, flags
);
235 if ((ret
= (id_priv
->state
== comp
)))
236 id_priv
->state
= exch
;
237 spin_unlock_irqrestore(&id_priv
->lock
, flags
);
241 static enum rdma_cm_state
cma_exch(struct rdma_id_private
*id_priv
,
242 enum rdma_cm_state exch
)
245 enum rdma_cm_state old
;
247 spin_lock_irqsave(&id_priv
->lock
, flags
);
248 old
= id_priv
->state
;
249 id_priv
->state
= exch
;
250 spin_unlock_irqrestore(&id_priv
->lock
, flags
);
254 static inline u8
cma_get_ip_ver(struct cma_hdr
*hdr
)
256 return hdr
->ip_version
>> 4;
259 static inline void cma_set_ip_ver(struct cma_hdr
*hdr
, u8 ip_ver
)
261 hdr
->ip_version
= (ip_ver
<< 4) | (hdr
->ip_version
& 0xF);
264 static inline u8
sdp_get_majv(u8 sdp_version
)
266 return sdp_version
>> 4;
269 static inline u8
sdp_get_ip_ver(struct sdp_hh
*hh
)
271 return hh
->ip_version
>> 4;
274 static inline void sdp_set_ip_ver(struct sdp_hh
*hh
, u8 ip_ver
)
276 hh
->ip_version
= (ip_ver
<< 4) | (hh
->ip_version
& 0xF);
279 static void cma_attach_to_dev(struct rdma_id_private
*id_priv
,
280 struct cma_device
*cma_dev
)
282 atomic_inc(&cma_dev
->refcount
);
283 id_priv
->cma_dev
= cma_dev
;
284 id_priv
->id
.device
= cma_dev
->device
;
285 id_priv
->id
.route
.addr
.dev_addr
.transport
=
286 rdma_node_get_transport(cma_dev
->device
->node_type
);
287 list_add_tail(&id_priv
->list
, &cma_dev
->id_list
);
290 static inline void cma_deref_dev(struct cma_device
*cma_dev
)
292 if (atomic_dec_and_test(&cma_dev
->refcount
))
293 complete(&cma_dev
->comp
);
296 static inline void release_mc(struct kref
*kref
)
298 struct cma_multicast
*mc
= container_of(kref
, struct cma_multicast
, mcref
);
300 kfree(mc
->multicast
.ib
);
304 static void cma_release_dev(struct rdma_id_private
*id_priv
)
307 list_del(&id_priv
->list
);
308 cma_deref_dev(id_priv
->cma_dev
);
309 id_priv
->cma_dev
= NULL
;
313 static int cma_set_qkey(struct rdma_id_private
*id_priv
)
315 struct ib_sa_mcmember_rec rec
;
321 switch (id_priv
->id
.ps
) {
323 id_priv
->qkey
= RDMA_UDP_QKEY
;
326 ib_addr_get_mgid(&id_priv
->id
.route
.addr
.dev_addr
, &rec
.mgid
);
327 ret
= ib_sa_get_mcmember_rec(id_priv
->id
.device
,
328 id_priv
->id
.port_num
, &rec
.mgid
,
331 id_priv
->qkey
= be32_to_cpu(rec
.qkey
);
339 static int find_gid_port(struct ib_device
*device
, union ib_gid
*gid
, u8 port_num
)
343 struct ib_port_attr props
;
346 err
= ib_query_port(device
, port_num
, &props
);
350 for (i
= 0; i
< props
.gid_tbl_len
; ++i
) {
351 err
= ib_query_gid(device
, port_num
, i
, &tmp
);
354 if (!memcmp(&tmp
, gid
, sizeof tmp
))
361 static int cma_acquire_dev(struct rdma_id_private
*id_priv
)
363 struct rdma_dev_addr
*dev_addr
= &id_priv
->id
.route
.addr
.dev_addr
;
364 struct cma_device
*cma_dev
;
365 union ib_gid gid
, iboe_gid
;
368 enum rdma_link_layer dev_ll
= dev_addr
->dev_type
== ARPHRD_INFINIBAND
?
369 IB_LINK_LAYER_INFINIBAND
: IB_LINK_LAYER_ETHERNET
;
371 if (dev_ll
!= IB_LINK_LAYER_INFINIBAND
&&
372 id_priv
->id
.ps
== RDMA_PS_IPOIB
)
376 iboe_addr_get_sgid(dev_addr
, &iboe_gid
);
377 memcpy(&gid
, dev_addr
->src_dev_addr
+
378 rdma_addr_gid_offset(dev_addr
), sizeof gid
);
379 list_for_each_entry(cma_dev
, &dev_list
, list
) {
380 for (port
= 1; port
<= cma_dev
->device
->phys_port_cnt
; ++port
) {
381 if (rdma_port_get_link_layer(cma_dev
->device
, port
) == dev_ll
) {
382 if (rdma_node_get_transport(cma_dev
->device
->node_type
) == RDMA_TRANSPORT_IB
&&
383 rdma_port_get_link_layer(cma_dev
->device
, port
) == IB_LINK_LAYER_ETHERNET
)
384 ret
= find_gid_port(cma_dev
->device
, &iboe_gid
, port
);
386 ret
= find_gid_port(cma_dev
->device
, &gid
, port
);
389 id_priv
->id
.port_num
= port
;
399 cma_attach_to_dev(id_priv
, cma_dev
);
405 static void cma_deref_id(struct rdma_id_private
*id_priv
)
407 if (atomic_dec_and_test(&id_priv
->refcount
))
408 complete(&id_priv
->comp
);
411 static int cma_disable_callback(struct rdma_id_private
*id_priv
,
412 enum rdma_cm_state state
)
414 mutex_lock(&id_priv
->handler_mutex
);
415 if (id_priv
->state
!= state
) {
416 mutex_unlock(&id_priv
->handler_mutex
);
422 struct rdma_cm_id
*rdma_create_id(rdma_cm_event_handler event_handler
,
423 void *context
, enum rdma_port_space ps
,
424 enum ib_qp_type qp_type
)
426 struct rdma_id_private
*id_priv
;
428 id_priv
= kzalloc(sizeof *id_priv
, GFP_KERNEL
);
430 return ERR_PTR(-ENOMEM
);
432 id_priv
->owner
= task_pid_nr(current
);
433 id_priv
->state
= RDMA_CM_IDLE
;
434 id_priv
->id
.context
= context
;
435 id_priv
->id
.event_handler
= event_handler
;
437 id_priv
->id
.qp_type
= qp_type
;
438 spin_lock_init(&id_priv
->lock
);
439 mutex_init(&id_priv
->qp_mutex
);
440 init_completion(&id_priv
->comp
);
441 atomic_set(&id_priv
->refcount
, 1);
442 mutex_init(&id_priv
->handler_mutex
);
443 INIT_LIST_HEAD(&id_priv
->listen_list
);
444 INIT_LIST_HEAD(&id_priv
->mc_list
);
445 get_random_bytes(&id_priv
->seq_num
, sizeof id_priv
->seq_num
);
449 EXPORT_SYMBOL(rdma_create_id
);
451 static int cma_init_ud_qp(struct rdma_id_private
*id_priv
, struct ib_qp
*qp
)
453 struct ib_qp_attr qp_attr
;
454 int qp_attr_mask
, ret
;
456 qp_attr
.qp_state
= IB_QPS_INIT
;
457 ret
= rdma_init_qp_attr(&id_priv
->id
, &qp_attr
, &qp_attr_mask
);
461 ret
= ib_modify_qp(qp
, &qp_attr
, qp_attr_mask
);
465 qp_attr
.qp_state
= IB_QPS_RTR
;
466 ret
= ib_modify_qp(qp
, &qp_attr
, IB_QP_STATE
);
470 qp_attr
.qp_state
= IB_QPS_RTS
;
472 ret
= ib_modify_qp(qp
, &qp_attr
, IB_QP_STATE
| IB_QP_SQ_PSN
);
477 static int cma_init_conn_qp(struct rdma_id_private
*id_priv
, struct ib_qp
*qp
)
479 struct ib_qp_attr qp_attr
;
480 int qp_attr_mask
, ret
;
482 qp_attr
.qp_state
= IB_QPS_INIT
;
483 ret
= rdma_init_qp_attr(&id_priv
->id
, &qp_attr
, &qp_attr_mask
);
487 return ib_modify_qp(qp
, &qp_attr
, qp_attr_mask
);
490 int rdma_create_qp(struct rdma_cm_id
*id
, struct ib_pd
*pd
,
491 struct ib_qp_init_attr
*qp_init_attr
)
493 struct rdma_id_private
*id_priv
;
497 id_priv
= container_of(id
, struct rdma_id_private
, id
);
498 if (id
->device
!= pd
->device
)
501 qp
= ib_create_qp(pd
, qp_init_attr
);
505 if (id
->qp_type
== IB_QPT_UD
)
506 ret
= cma_init_ud_qp(id_priv
, qp
);
508 ret
= cma_init_conn_qp(id_priv
, qp
);
513 id_priv
->qp_num
= qp
->qp_num
;
514 id_priv
->srq
= (qp
->srq
!= NULL
);
520 EXPORT_SYMBOL(rdma_create_qp
);
522 void rdma_destroy_qp(struct rdma_cm_id
*id
)
524 struct rdma_id_private
*id_priv
;
526 id_priv
= container_of(id
, struct rdma_id_private
, id
);
527 mutex_lock(&id_priv
->qp_mutex
);
528 ib_destroy_qp(id_priv
->id
.qp
);
529 id_priv
->id
.qp
= NULL
;
530 mutex_unlock(&id_priv
->qp_mutex
);
532 EXPORT_SYMBOL(rdma_destroy_qp
);
534 static int cma_modify_qp_rtr(struct rdma_id_private
*id_priv
,
535 struct rdma_conn_param
*conn_param
)
537 struct ib_qp_attr qp_attr
;
538 int qp_attr_mask
, ret
;
540 mutex_lock(&id_priv
->qp_mutex
);
541 if (!id_priv
->id
.qp
) {
546 /* Need to update QP attributes from default values. */
547 qp_attr
.qp_state
= IB_QPS_INIT
;
548 ret
= rdma_init_qp_attr(&id_priv
->id
, &qp_attr
, &qp_attr_mask
);
552 ret
= ib_modify_qp(id_priv
->id
.qp
, &qp_attr
, qp_attr_mask
);
556 qp_attr
.qp_state
= IB_QPS_RTR
;
557 ret
= rdma_init_qp_attr(&id_priv
->id
, &qp_attr
, &qp_attr_mask
);
562 qp_attr
.max_dest_rd_atomic
= conn_param
->responder_resources
;
563 ret
= ib_modify_qp(id_priv
->id
.qp
, &qp_attr
, qp_attr_mask
);
565 mutex_unlock(&id_priv
->qp_mutex
);
569 static int cma_modify_qp_rts(struct rdma_id_private
*id_priv
,
570 struct rdma_conn_param
*conn_param
)
572 struct ib_qp_attr qp_attr
;
573 int qp_attr_mask
, ret
;
575 mutex_lock(&id_priv
->qp_mutex
);
576 if (!id_priv
->id
.qp
) {
581 qp_attr
.qp_state
= IB_QPS_RTS
;
582 ret
= rdma_init_qp_attr(&id_priv
->id
, &qp_attr
, &qp_attr_mask
);
587 qp_attr
.max_rd_atomic
= conn_param
->initiator_depth
;
588 ret
= ib_modify_qp(id_priv
->id
.qp
, &qp_attr
, qp_attr_mask
);
590 mutex_unlock(&id_priv
->qp_mutex
);
594 static int cma_modify_qp_err(struct rdma_id_private
*id_priv
)
596 struct ib_qp_attr qp_attr
;
599 mutex_lock(&id_priv
->qp_mutex
);
600 if (!id_priv
->id
.qp
) {
605 qp_attr
.qp_state
= IB_QPS_ERR
;
606 ret
= ib_modify_qp(id_priv
->id
.qp
, &qp_attr
, IB_QP_STATE
);
608 mutex_unlock(&id_priv
->qp_mutex
);
612 static int cma_ib_init_qp_attr(struct rdma_id_private
*id_priv
,
613 struct ib_qp_attr
*qp_attr
, int *qp_attr_mask
)
615 struct rdma_dev_addr
*dev_addr
= &id_priv
->id
.route
.addr
.dev_addr
;
619 if (rdma_port_get_link_layer(id_priv
->id
.device
, id_priv
->id
.port_num
) ==
620 IB_LINK_LAYER_INFINIBAND
)
621 pkey
= ib_addr_get_pkey(dev_addr
);
625 ret
= ib_find_cached_pkey(id_priv
->id
.device
, id_priv
->id
.port_num
,
626 pkey
, &qp_attr
->pkey_index
);
630 qp_attr
->port_num
= id_priv
->id
.port_num
;
631 *qp_attr_mask
= IB_QP_STATE
| IB_QP_PKEY_INDEX
| IB_QP_PORT
;
633 if (id_priv
->id
.qp_type
== IB_QPT_UD
) {
634 ret
= cma_set_qkey(id_priv
);
638 qp_attr
->qkey
= id_priv
->qkey
;
639 *qp_attr_mask
|= IB_QP_QKEY
;
641 qp_attr
->qp_access_flags
= 0;
642 *qp_attr_mask
|= IB_QP_ACCESS_FLAGS
;
647 int rdma_init_qp_attr(struct rdma_cm_id
*id
, struct ib_qp_attr
*qp_attr
,
650 struct rdma_id_private
*id_priv
;
653 id_priv
= container_of(id
, struct rdma_id_private
, id
);
654 switch (rdma_node_get_transport(id_priv
->id
.device
->node_type
)) {
655 case RDMA_TRANSPORT_IB
:
656 if (!id_priv
->cm_id
.ib
|| (id_priv
->id
.qp_type
== IB_QPT_UD
))
657 ret
= cma_ib_init_qp_attr(id_priv
, qp_attr
, qp_attr_mask
);
659 ret
= ib_cm_init_qp_attr(id_priv
->cm_id
.ib
, qp_attr
,
661 if (qp_attr
->qp_state
== IB_QPS_RTR
)
662 qp_attr
->rq_psn
= id_priv
->seq_num
;
664 case RDMA_TRANSPORT_IWARP
:
665 if (!id_priv
->cm_id
.iw
) {
666 qp_attr
->qp_access_flags
= 0;
667 *qp_attr_mask
= IB_QP_STATE
| IB_QP_ACCESS_FLAGS
;
669 ret
= iw_cm_init_qp_attr(id_priv
->cm_id
.iw
, qp_attr
,
679 EXPORT_SYMBOL(rdma_init_qp_attr
);
681 static inline int cma_zero_addr(struct sockaddr
*addr
)
683 struct in6_addr
*ip6
;
685 if (addr
->sa_family
== AF_INET
)
686 return ipv4_is_zeronet(
687 ((struct sockaddr_in
*)addr
)->sin_addr
.s_addr
);
689 ip6
= &((struct sockaddr_in6
*) addr
)->sin6_addr
;
690 return (ip6
->s6_addr32
[0] | ip6
->s6_addr32
[1] |
691 ip6
->s6_addr32
[2] | ip6
->s6_addr32
[3]) == 0;
695 static inline int cma_loopback_addr(struct sockaddr
*addr
)
697 if (addr
->sa_family
== AF_INET
)
698 return ipv4_is_loopback(
699 ((struct sockaddr_in
*) addr
)->sin_addr
.s_addr
);
701 return ipv6_addr_loopback(
702 &((struct sockaddr_in6
*) addr
)->sin6_addr
);
705 static inline int cma_any_addr(struct sockaddr
*addr
)
707 return cma_zero_addr(addr
) || cma_loopback_addr(addr
);
710 static int cma_addr_cmp(struct sockaddr
*src
, struct sockaddr
*dst
)
712 if (src
->sa_family
!= dst
->sa_family
)
715 switch (src
->sa_family
) {
717 return ((struct sockaddr_in
*) src
)->sin_addr
.s_addr
!=
718 ((struct sockaddr_in
*) dst
)->sin_addr
.s_addr
;
720 return ipv6_addr_cmp(&((struct sockaddr_in6
*) src
)->sin6_addr
,
721 &((struct sockaddr_in6
*) dst
)->sin6_addr
);
725 static inline __be16
cma_port(struct sockaddr
*addr
)
727 if (addr
->sa_family
== AF_INET
)
728 return ((struct sockaddr_in
*) addr
)->sin_port
;
730 return ((struct sockaddr_in6
*) addr
)->sin6_port
;
733 static inline int cma_any_port(struct sockaddr
*addr
)
735 return !cma_port(addr
);
738 static int cma_get_net_info(void *hdr
, enum rdma_port_space ps
,
739 u8
*ip_ver
, __be16
*port
,
740 union cma_ip_addr
**src
, union cma_ip_addr
**dst
)
744 if (sdp_get_majv(((struct sdp_hh
*) hdr
)->sdp_version
) !=
748 *ip_ver
= sdp_get_ip_ver(hdr
);
749 *port
= ((struct sdp_hh
*) hdr
)->port
;
750 *src
= &((struct sdp_hh
*) hdr
)->src_addr
;
751 *dst
= &((struct sdp_hh
*) hdr
)->dst_addr
;
754 if (((struct cma_hdr
*) hdr
)->cma_version
!= CMA_VERSION
)
757 *ip_ver
= cma_get_ip_ver(hdr
);
758 *port
= ((struct cma_hdr
*) hdr
)->port
;
759 *src
= &((struct cma_hdr
*) hdr
)->src_addr
;
760 *dst
= &((struct cma_hdr
*) hdr
)->dst_addr
;
764 if (*ip_ver
!= 4 && *ip_ver
!= 6)
769 static void cma_save_net_info(struct rdma_addr
*addr
,
770 struct rdma_addr
*listen_addr
,
771 u8 ip_ver
, __be16 port
,
772 union cma_ip_addr
*src
, union cma_ip_addr
*dst
)
774 struct sockaddr_in
*listen4
, *ip4
;
775 struct sockaddr_in6
*listen6
, *ip6
;
779 listen4
= (struct sockaddr_in
*) &listen_addr
->src_addr
;
780 ip4
= (struct sockaddr_in
*) &addr
->src_addr
;
781 ip4
->sin_family
= listen4
->sin_family
;
782 ip4
->sin_addr
.s_addr
= dst
->ip4
.addr
;
783 ip4
->sin_port
= listen4
->sin_port
;
785 ip4
= (struct sockaddr_in
*) &addr
->dst_addr
;
786 ip4
->sin_family
= listen4
->sin_family
;
787 ip4
->sin_addr
.s_addr
= src
->ip4
.addr
;
788 ip4
->sin_port
= port
;
791 listen6
= (struct sockaddr_in6
*) &listen_addr
->src_addr
;
792 ip6
= (struct sockaddr_in6
*) &addr
->src_addr
;
793 ip6
->sin6_family
= listen6
->sin6_family
;
794 ip6
->sin6_addr
= dst
->ip6
;
795 ip6
->sin6_port
= listen6
->sin6_port
;
797 ip6
= (struct sockaddr_in6
*) &addr
->dst_addr
;
798 ip6
->sin6_family
= listen6
->sin6_family
;
799 ip6
->sin6_addr
= src
->ip6
;
800 ip6
->sin6_port
= port
;
807 static inline int cma_user_data_offset(enum rdma_port_space ps
)
813 return sizeof(struct cma_hdr
);
817 static void cma_cancel_route(struct rdma_id_private
*id_priv
)
819 switch (rdma_port_get_link_layer(id_priv
->id
.device
, id_priv
->id
.port_num
)) {
820 case IB_LINK_LAYER_INFINIBAND
:
822 ib_sa_cancel_query(id_priv
->query_id
, id_priv
->query
);
829 static void cma_cancel_listens(struct rdma_id_private
*id_priv
)
831 struct rdma_id_private
*dev_id_priv
;
834 * Remove from listen_any_list to prevent added devices from spawning
835 * additional listen requests.
838 list_del(&id_priv
->list
);
840 while (!list_empty(&id_priv
->listen_list
)) {
841 dev_id_priv
= list_entry(id_priv
->listen_list
.next
,
842 struct rdma_id_private
, listen_list
);
843 /* sync with device removal to avoid duplicate destruction */
844 list_del_init(&dev_id_priv
->list
);
845 list_del(&dev_id_priv
->listen_list
);
848 rdma_destroy_id(&dev_id_priv
->id
);
854 static void cma_cancel_operation(struct rdma_id_private
*id_priv
,
855 enum rdma_cm_state state
)
858 case RDMA_CM_ADDR_QUERY
:
859 rdma_addr_cancel(&id_priv
->id
.route
.addr
.dev_addr
);
861 case RDMA_CM_ROUTE_QUERY
:
862 cma_cancel_route(id_priv
);
865 if (cma_any_addr((struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
)
866 && !id_priv
->cma_dev
)
867 cma_cancel_listens(id_priv
);
874 static void cma_release_port(struct rdma_id_private
*id_priv
)
876 struct rdma_bind_list
*bind_list
= id_priv
->bind_list
;
882 hlist_del(&id_priv
->node
);
883 if (hlist_empty(&bind_list
->owners
)) {
884 idr_remove(bind_list
->ps
, bind_list
->port
);
890 static void cma_leave_mc_groups(struct rdma_id_private
*id_priv
)
892 struct cma_multicast
*mc
;
894 while (!list_empty(&id_priv
->mc_list
)) {
895 mc
= container_of(id_priv
->mc_list
.next
,
896 struct cma_multicast
, list
);
898 switch (rdma_port_get_link_layer(id_priv
->cma_dev
->device
, id_priv
->id
.port_num
)) {
899 case IB_LINK_LAYER_INFINIBAND
:
900 ib_sa_free_multicast(mc
->multicast
.ib
);
903 case IB_LINK_LAYER_ETHERNET
:
904 kref_put(&mc
->mcref
, release_mc
);
912 void rdma_destroy_id(struct rdma_cm_id
*id
)
914 struct rdma_id_private
*id_priv
;
915 enum rdma_cm_state state
;
917 id_priv
= container_of(id
, struct rdma_id_private
, id
);
918 state
= cma_exch(id_priv
, RDMA_CM_DESTROYING
);
919 cma_cancel_operation(id_priv
, state
);
922 * Wait for any active callback to finish. New callbacks will find
923 * the id_priv state set to destroying and abort.
925 mutex_lock(&id_priv
->handler_mutex
);
926 mutex_unlock(&id_priv
->handler_mutex
);
928 if (id_priv
->cma_dev
) {
929 switch (rdma_node_get_transport(id_priv
->id
.device
->node_type
)) {
930 case RDMA_TRANSPORT_IB
:
931 if (id_priv
->cm_id
.ib
)
932 ib_destroy_cm_id(id_priv
->cm_id
.ib
);
934 case RDMA_TRANSPORT_IWARP
:
935 if (id_priv
->cm_id
.iw
)
936 iw_destroy_cm_id(id_priv
->cm_id
.iw
);
941 cma_leave_mc_groups(id_priv
);
942 cma_release_dev(id_priv
);
945 cma_release_port(id_priv
);
946 cma_deref_id(id_priv
);
947 wait_for_completion(&id_priv
->comp
);
949 if (id_priv
->internal_id
)
950 cma_deref_id(id_priv
->id
.context
);
952 kfree(id_priv
->id
.route
.path_rec
);
955 EXPORT_SYMBOL(rdma_destroy_id
);
957 static int cma_rep_recv(struct rdma_id_private
*id_priv
)
961 ret
= cma_modify_qp_rtr(id_priv
, NULL
);
965 ret
= cma_modify_qp_rts(id_priv
, NULL
);
969 ret
= ib_send_cm_rtu(id_priv
->cm_id
.ib
, NULL
, 0);
975 cma_modify_qp_err(id_priv
);
976 ib_send_cm_rej(id_priv
->cm_id
.ib
, IB_CM_REJ_CONSUMER_DEFINED
,
981 static int cma_verify_rep(struct rdma_id_private
*id_priv
, void *data
)
983 if (id_priv
->id
.ps
== RDMA_PS_SDP
&&
984 sdp_get_majv(((struct sdp_hah
*) data
)->sdp_version
) !=
991 static void cma_set_rep_event_data(struct rdma_cm_event
*event
,
992 struct ib_cm_rep_event_param
*rep_data
,
995 event
->param
.conn
.private_data
= private_data
;
996 event
->param
.conn
.private_data_len
= IB_CM_REP_PRIVATE_DATA_SIZE
;
997 event
->param
.conn
.responder_resources
= rep_data
->responder_resources
;
998 event
->param
.conn
.initiator_depth
= rep_data
->initiator_depth
;
999 event
->param
.conn
.flow_control
= rep_data
->flow_control
;
1000 event
->param
.conn
.rnr_retry_count
= rep_data
->rnr_retry_count
;
1001 event
->param
.conn
.srq
= rep_data
->srq
;
1002 event
->param
.conn
.qp_num
= rep_data
->remote_qpn
;
1005 static int cma_ib_handler(struct ib_cm_id
*cm_id
, struct ib_cm_event
*ib_event
)
1007 struct rdma_id_private
*id_priv
= cm_id
->context
;
1008 struct rdma_cm_event event
;
1011 if ((ib_event
->event
!= IB_CM_TIMEWAIT_EXIT
&&
1012 cma_disable_callback(id_priv
, RDMA_CM_CONNECT
)) ||
1013 (ib_event
->event
== IB_CM_TIMEWAIT_EXIT
&&
1014 cma_disable_callback(id_priv
, RDMA_CM_DISCONNECT
)))
1017 memset(&event
, 0, sizeof event
);
1018 switch (ib_event
->event
) {
1019 case IB_CM_REQ_ERROR
:
1020 case IB_CM_REP_ERROR
:
1021 event
.event
= RDMA_CM_EVENT_UNREACHABLE
;
1022 event
.status
= -ETIMEDOUT
;
1024 case IB_CM_REP_RECEIVED
:
1025 event
.status
= cma_verify_rep(id_priv
, ib_event
->private_data
);
1027 event
.event
= RDMA_CM_EVENT_CONNECT_ERROR
;
1028 else if (id_priv
->id
.qp
&& id_priv
->id
.ps
!= RDMA_PS_SDP
) {
1029 event
.status
= cma_rep_recv(id_priv
);
1030 event
.event
= event
.status
? RDMA_CM_EVENT_CONNECT_ERROR
:
1031 RDMA_CM_EVENT_ESTABLISHED
;
1033 event
.event
= RDMA_CM_EVENT_CONNECT_RESPONSE
;
1034 cma_set_rep_event_data(&event
, &ib_event
->param
.rep_rcvd
,
1035 ib_event
->private_data
);
1037 case IB_CM_RTU_RECEIVED
:
1038 case IB_CM_USER_ESTABLISHED
:
1039 event
.event
= RDMA_CM_EVENT_ESTABLISHED
;
1041 case IB_CM_DREQ_ERROR
:
1042 event
.status
= -ETIMEDOUT
; /* fall through */
1043 case IB_CM_DREQ_RECEIVED
:
1044 case IB_CM_DREP_RECEIVED
:
1045 if (!cma_comp_exch(id_priv
, RDMA_CM_CONNECT
,
1046 RDMA_CM_DISCONNECT
))
1048 event
.event
= RDMA_CM_EVENT_DISCONNECTED
;
1050 case IB_CM_TIMEWAIT_EXIT
:
1051 event
.event
= RDMA_CM_EVENT_TIMEWAIT_EXIT
;
1053 case IB_CM_MRA_RECEIVED
:
1056 case IB_CM_REJ_RECEIVED
:
1057 cma_modify_qp_err(id_priv
);
1058 event
.status
= ib_event
->param
.rej_rcvd
.reason
;
1059 event
.event
= RDMA_CM_EVENT_REJECTED
;
1060 event
.param
.conn
.private_data
= ib_event
->private_data
;
1061 event
.param
.conn
.private_data_len
= IB_CM_REJ_PRIVATE_DATA_SIZE
;
1064 printk(KERN_ERR
"RDMA CMA: unexpected IB CM event: %d\n",
1069 ret
= id_priv
->id
.event_handler(&id_priv
->id
, &event
);
1071 /* Destroy the CM ID by returning a non-zero value. */
1072 id_priv
->cm_id
.ib
= NULL
;
1073 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
1074 mutex_unlock(&id_priv
->handler_mutex
);
1075 rdma_destroy_id(&id_priv
->id
);
1079 mutex_unlock(&id_priv
->handler_mutex
);
1083 static struct rdma_id_private
*cma_new_conn_id(struct rdma_cm_id
*listen_id
,
1084 struct ib_cm_event
*ib_event
)
1086 struct rdma_id_private
*id_priv
;
1087 struct rdma_cm_id
*id
;
1088 struct rdma_route
*rt
;
1089 union cma_ip_addr
*src
, *dst
;
1094 if (cma_get_net_info(ib_event
->private_data
, listen_id
->ps
,
1095 &ip_ver
, &port
, &src
, &dst
))
1098 id
= rdma_create_id(listen_id
->event_handler
, listen_id
->context
,
1099 listen_id
->ps
, ib_event
->param
.req_rcvd
.qp_type
);
1103 cma_save_net_info(&id
->route
.addr
, &listen_id
->route
.addr
,
1104 ip_ver
, port
, src
, dst
);
1107 rt
->num_paths
= ib_event
->param
.req_rcvd
.alternate_path
? 2 : 1;
1108 rt
->path_rec
= kmalloc(sizeof *rt
->path_rec
* rt
->num_paths
,
1113 rt
->path_rec
[0] = *ib_event
->param
.req_rcvd
.primary_path
;
1114 if (rt
->num_paths
== 2)
1115 rt
->path_rec
[1] = *ib_event
->param
.req_rcvd
.alternate_path
;
1117 if (cma_any_addr((struct sockaddr
*) &rt
->addr
.src_addr
)) {
1118 rt
->addr
.dev_addr
.dev_type
= ARPHRD_INFINIBAND
;
1119 rdma_addr_set_sgid(&rt
->addr
.dev_addr
, &rt
->path_rec
[0].sgid
);
1120 ib_addr_set_pkey(&rt
->addr
.dev_addr
, be16_to_cpu(rt
->path_rec
[0].pkey
));
1122 ret
= rdma_translate_ip((struct sockaddr
*) &rt
->addr
.src_addr
,
1123 &rt
->addr
.dev_addr
);
1127 rdma_addr_set_dgid(&rt
->addr
.dev_addr
, &rt
->path_rec
[0].dgid
);
1129 id_priv
= container_of(id
, struct rdma_id_private
, id
);
1130 id_priv
->state
= RDMA_CM_CONNECT
;
1134 rdma_destroy_id(id
);
1138 static struct rdma_id_private
*cma_new_udp_id(struct rdma_cm_id
*listen_id
,
1139 struct ib_cm_event
*ib_event
)
1141 struct rdma_id_private
*id_priv
;
1142 struct rdma_cm_id
*id
;
1143 union cma_ip_addr
*src
, *dst
;
1148 id
= rdma_create_id(listen_id
->event_handler
, listen_id
->context
,
1149 listen_id
->ps
, IB_QPT_UD
);
1154 if (cma_get_net_info(ib_event
->private_data
, listen_id
->ps
,
1155 &ip_ver
, &port
, &src
, &dst
))
1158 cma_save_net_info(&id
->route
.addr
, &listen_id
->route
.addr
,
1159 ip_ver
, port
, src
, dst
);
1161 if (!cma_any_addr((struct sockaddr
*) &id
->route
.addr
.src_addr
)) {
1162 ret
= rdma_translate_ip((struct sockaddr
*) &id
->route
.addr
.src_addr
,
1163 &id
->route
.addr
.dev_addr
);
1168 id_priv
= container_of(id
, struct rdma_id_private
, id
);
1169 id_priv
->state
= RDMA_CM_CONNECT
;
1172 rdma_destroy_id(id
);
1176 static void cma_set_req_event_data(struct rdma_cm_event
*event
,
1177 struct ib_cm_req_event_param
*req_data
,
1178 void *private_data
, int offset
)
1180 event
->param
.conn
.private_data
= private_data
+ offset
;
1181 event
->param
.conn
.private_data_len
= IB_CM_REQ_PRIVATE_DATA_SIZE
- offset
;
1182 event
->param
.conn
.responder_resources
= req_data
->responder_resources
;
1183 event
->param
.conn
.initiator_depth
= req_data
->initiator_depth
;
1184 event
->param
.conn
.flow_control
= req_data
->flow_control
;
1185 event
->param
.conn
.retry_count
= req_data
->retry_count
;
1186 event
->param
.conn
.rnr_retry_count
= req_data
->rnr_retry_count
;
1187 event
->param
.conn
.srq
= req_data
->srq
;
1188 event
->param
.conn
.qp_num
= req_data
->remote_qpn
;
1191 static int cma_check_req_qp_type(struct rdma_cm_id
*id
, struct ib_cm_event
*ib_event
)
1193 return (((ib_event
->event
== IB_CM_REQ_RECEIVED
) &&
1194 (ib_event
->param
.req_rcvd
.qp_type
== id
->qp_type
)) ||
1195 ((ib_event
->event
== IB_CM_SIDR_REQ_RECEIVED
) &&
1196 (id
->qp_type
== IB_QPT_UD
)) ||
1200 static int cma_req_handler(struct ib_cm_id
*cm_id
, struct ib_cm_event
*ib_event
)
1202 struct rdma_id_private
*listen_id
, *conn_id
;
1203 struct rdma_cm_event event
;
1206 listen_id
= cm_id
->context
;
1207 if (!cma_check_req_qp_type(&listen_id
->id
, ib_event
))
1210 if (cma_disable_callback(listen_id
, RDMA_CM_LISTEN
))
1211 return -ECONNABORTED
;
1213 memset(&event
, 0, sizeof event
);
1214 offset
= cma_user_data_offset(listen_id
->id
.ps
);
1215 event
.event
= RDMA_CM_EVENT_CONNECT_REQUEST
;
1216 if (ib_event
->event
== IB_CM_SIDR_REQ_RECEIVED
) {
1217 conn_id
= cma_new_udp_id(&listen_id
->id
, ib_event
);
1218 event
.param
.ud
.private_data
= ib_event
->private_data
+ offset
;
1219 event
.param
.ud
.private_data_len
=
1220 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE
- offset
;
1222 conn_id
= cma_new_conn_id(&listen_id
->id
, ib_event
);
1223 cma_set_req_event_data(&event
, &ib_event
->param
.req_rcvd
,
1224 ib_event
->private_data
, offset
);
1231 mutex_lock_nested(&conn_id
->handler_mutex
, SINGLE_DEPTH_NESTING
);
1232 ret
= cma_acquire_dev(conn_id
);
1236 conn_id
->cm_id
.ib
= cm_id
;
1237 cm_id
->context
= conn_id
;
1238 cm_id
->cm_handler
= cma_ib_handler
;
1241 * Protect against the user destroying conn_id from another thread
1242 * until we're done accessing it.
1244 atomic_inc(&conn_id
->refcount
);
1245 ret
= conn_id
->id
.event_handler(&conn_id
->id
, &event
);
1250 * Acquire mutex to prevent user executing rdma_destroy_id()
1251 * while we're accessing the cm_id.
1254 if (cma_comp(conn_id
, RDMA_CM_CONNECT
) && (conn_id
->id
.qp_type
!= IB_QPT_UD
))
1255 ib_send_cm_mra(cm_id
, CMA_CM_MRA_SETTING
, NULL
, 0);
1256 mutex_unlock(&lock
);
1257 mutex_unlock(&conn_id
->handler_mutex
);
1258 mutex_unlock(&listen_id
->handler_mutex
);
1259 cma_deref_id(conn_id
);
1263 cma_deref_id(conn_id
);
1264 /* Destroy the CM ID by returning a non-zero value. */
1265 conn_id
->cm_id
.ib
= NULL
;
1267 cma_exch(conn_id
, RDMA_CM_DESTROYING
);
1268 mutex_unlock(&conn_id
->handler_mutex
);
1270 mutex_unlock(&listen_id
->handler_mutex
);
1272 rdma_destroy_id(&conn_id
->id
);
1276 static __be64
cma_get_service_id(enum rdma_port_space ps
, struct sockaddr
*addr
)
1278 return cpu_to_be64(((u64
)ps
<< 16) + be16_to_cpu(cma_port(addr
)));
1281 static void cma_set_compare_data(enum rdma_port_space ps
, struct sockaddr
*addr
,
1282 struct ib_cm_compare_data
*compare
)
1284 struct cma_hdr
*cma_data
, *cma_mask
;
1285 struct sdp_hh
*sdp_data
, *sdp_mask
;
1287 struct in6_addr ip6_addr
;
1289 memset(compare
, 0, sizeof *compare
);
1290 cma_data
= (void *) compare
->data
;
1291 cma_mask
= (void *) compare
->mask
;
1292 sdp_data
= (void *) compare
->data
;
1293 sdp_mask
= (void *) compare
->mask
;
1295 switch (addr
->sa_family
) {
1297 ip4_addr
= ((struct sockaddr_in
*) addr
)->sin_addr
.s_addr
;
1298 if (ps
== RDMA_PS_SDP
) {
1299 sdp_set_ip_ver(sdp_data
, 4);
1300 sdp_set_ip_ver(sdp_mask
, 0xF);
1301 sdp_data
->dst_addr
.ip4
.addr
= ip4_addr
;
1302 sdp_mask
->dst_addr
.ip4
.addr
= htonl(~0);
1304 cma_set_ip_ver(cma_data
, 4);
1305 cma_set_ip_ver(cma_mask
, 0xF);
1306 if (!cma_any_addr(addr
)) {
1307 cma_data
->dst_addr
.ip4
.addr
= ip4_addr
;
1308 cma_mask
->dst_addr
.ip4
.addr
= htonl(~0);
1313 ip6_addr
= ((struct sockaddr_in6
*) addr
)->sin6_addr
;
1314 if (ps
== RDMA_PS_SDP
) {
1315 sdp_set_ip_ver(sdp_data
, 6);
1316 sdp_set_ip_ver(sdp_mask
, 0xF);
1317 sdp_data
->dst_addr
.ip6
= ip6_addr
;
1318 memset(&sdp_mask
->dst_addr
.ip6
, 0xFF,
1319 sizeof sdp_mask
->dst_addr
.ip6
);
1321 cma_set_ip_ver(cma_data
, 6);
1322 cma_set_ip_ver(cma_mask
, 0xF);
1323 if (!cma_any_addr(addr
)) {
1324 cma_data
->dst_addr
.ip6
= ip6_addr
;
1325 memset(&cma_mask
->dst_addr
.ip6
, 0xFF,
1326 sizeof cma_mask
->dst_addr
.ip6
);
1335 static int cma_iw_handler(struct iw_cm_id
*iw_id
, struct iw_cm_event
*iw_event
)
1337 struct rdma_id_private
*id_priv
= iw_id
->context
;
1338 struct rdma_cm_event event
;
1339 struct sockaddr_in
*sin
;
1342 if (cma_disable_callback(id_priv
, RDMA_CM_CONNECT
))
1345 memset(&event
, 0, sizeof event
);
1346 switch (iw_event
->event
) {
1347 case IW_CM_EVENT_CLOSE
:
1348 event
.event
= RDMA_CM_EVENT_DISCONNECTED
;
1350 case IW_CM_EVENT_CONNECT_REPLY
:
1351 sin
= (struct sockaddr_in
*) &id_priv
->id
.route
.addr
.src_addr
;
1352 *sin
= iw_event
->local_addr
;
1353 sin
= (struct sockaddr_in
*) &id_priv
->id
.route
.addr
.dst_addr
;
1354 *sin
= iw_event
->remote_addr
;
1355 switch (iw_event
->status
) {
1357 event
.event
= RDMA_CM_EVENT_ESTABLISHED
;
1358 event
.param
.conn
.initiator_depth
= iw_event
->ird
;
1359 event
.param
.conn
.responder_resources
= iw_event
->ord
;
1363 event
.event
= RDMA_CM_EVENT_REJECTED
;
1366 event
.event
= RDMA_CM_EVENT_UNREACHABLE
;
1369 event
.event
= RDMA_CM_EVENT_CONNECT_ERROR
;
1373 case IW_CM_EVENT_ESTABLISHED
:
1374 event
.event
= RDMA_CM_EVENT_ESTABLISHED
;
1375 event
.param
.conn
.initiator_depth
= iw_event
->ird
;
1376 event
.param
.conn
.responder_resources
= iw_event
->ord
;
1382 event
.status
= iw_event
->status
;
1383 event
.param
.conn
.private_data
= iw_event
->private_data
;
1384 event
.param
.conn
.private_data_len
= iw_event
->private_data_len
;
1385 ret
= id_priv
->id
.event_handler(&id_priv
->id
, &event
);
1387 /* Destroy the CM ID by returning a non-zero value. */
1388 id_priv
->cm_id
.iw
= NULL
;
1389 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
1390 mutex_unlock(&id_priv
->handler_mutex
);
1391 rdma_destroy_id(&id_priv
->id
);
1395 mutex_unlock(&id_priv
->handler_mutex
);
1399 static int iw_conn_req_handler(struct iw_cm_id
*cm_id
,
1400 struct iw_cm_event
*iw_event
)
1402 struct rdma_cm_id
*new_cm_id
;
1403 struct rdma_id_private
*listen_id
, *conn_id
;
1404 struct sockaddr_in
*sin
;
1405 struct net_device
*dev
= NULL
;
1406 struct rdma_cm_event event
;
1408 struct ib_device_attr attr
;
1410 listen_id
= cm_id
->context
;
1411 if (cma_disable_callback(listen_id
, RDMA_CM_LISTEN
))
1412 return -ECONNABORTED
;
1414 /* Create a new RDMA id for the new IW CM ID */
1415 new_cm_id
= rdma_create_id(listen_id
->id
.event_handler
,
1416 listen_id
->id
.context
,
1417 RDMA_PS_TCP
, IB_QPT_RC
);
1418 if (IS_ERR(new_cm_id
)) {
1422 conn_id
= container_of(new_cm_id
, struct rdma_id_private
, id
);
1423 mutex_lock_nested(&conn_id
->handler_mutex
, SINGLE_DEPTH_NESTING
);
1424 conn_id
->state
= RDMA_CM_CONNECT
;
1426 dev
= ip_dev_find(&init_net
, iw_event
->local_addr
.sin_addr
.s_addr
);
1428 ret
= -EADDRNOTAVAIL
;
1429 mutex_unlock(&conn_id
->handler_mutex
);
1430 rdma_destroy_id(new_cm_id
);
1433 ret
= rdma_copy_addr(&conn_id
->id
.route
.addr
.dev_addr
, dev
, NULL
);
1435 mutex_unlock(&conn_id
->handler_mutex
);
1436 rdma_destroy_id(new_cm_id
);
1440 ret
= cma_acquire_dev(conn_id
);
1442 mutex_unlock(&conn_id
->handler_mutex
);
1443 rdma_destroy_id(new_cm_id
);
1447 conn_id
->cm_id
.iw
= cm_id
;
1448 cm_id
->context
= conn_id
;
1449 cm_id
->cm_handler
= cma_iw_handler
;
1451 sin
= (struct sockaddr_in
*) &new_cm_id
->route
.addr
.src_addr
;
1452 *sin
= iw_event
->local_addr
;
1453 sin
= (struct sockaddr_in
*) &new_cm_id
->route
.addr
.dst_addr
;
1454 *sin
= iw_event
->remote_addr
;
1456 ret
= ib_query_device(conn_id
->id
.device
, &attr
);
1458 mutex_unlock(&conn_id
->handler_mutex
);
1459 rdma_destroy_id(new_cm_id
);
1463 memset(&event
, 0, sizeof event
);
1464 event
.event
= RDMA_CM_EVENT_CONNECT_REQUEST
;
1465 event
.param
.conn
.private_data
= iw_event
->private_data
;
1466 event
.param
.conn
.private_data_len
= iw_event
->private_data_len
;
1467 event
.param
.conn
.initiator_depth
= iw_event
->ird
;
1468 event
.param
.conn
.responder_resources
= iw_event
->ord
;
1471 * Protect against the user destroying conn_id from another thread
1472 * until we're done accessing it.
1474 atomic_inc(&conn_id
->refcount
);
1475 ret
= conn_id
->id
.event_handler(&conn_id
->id
, &event
);
1477 /* User wants to destroy the CM ID */
1478 conn_id
->cm_id
.iw
= NULL
;
1479 cma_exch(conn_id
, RDMA_CM_DESTROYING
);
1480 mutex_unlock(&conn_id
->handler_mutex
);
1481 cma_deref_id(conn_id
);
1482 rdma_destroy_id(&conn_id
->id
);
1486 mutex_unlock(&conn_id
->handler_mutex
);
1487 cma_deref_id(conn_id
);
1492 mutex_unlock(&listen_id
->handler_mutex
);
1496 static int cma_ib_listen(struct rdma_id_private
*id_priv
)
1498 struct ib_cm_compare_data compare_data
;
1499 struct sockaddr
*addr
;
1500 struct ib_cm_id
*id
;
1504 id
= ib_create_cm_id(id_priv
->id
.device
, cma_req_handler
, id_priv
);
1508 id_priv
->cm_id
.ib
= id
;
1510 addr
= (struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
;
1511 svc_id
= cma_get_service_id(id_priv
->id
.ps
, addr
);
1512 if (cma_any_addr(addr
) && !id_priv
->afonly
)
1513 ret
= ib_cm_listen(id_priv
->cm_id
.ib
, svc_id
, 0, NULL
);
1515 cma_set_compare_data(id_priv
->id
.ps
, addr
, &compare_data
);
1516 ret
= ib_cm_listen(id_priv
->cm_id
.ib
, svc_id
, 0, &compare_data
);
1520 ib_destroy_cm_id(id_priv
->cm_id
.ib
);
1521 id_priv
->cm_id
.ib
= NULL
;
1527 static int cma_iw_listen(struct rdma_id_private
*id_priv
, int backlog
)
1530 struct sockaddr_in
*sin
;
1531 struct iw_cm_id
*id
;
1533 id
= iw_create_cm_id(id_priv
->id
.device
,
1534 iw_conn_req_handler
,
1539 id_priv
->cm_id
.iw
= id
;
1541 sin
= (struct sockaddr_in
*) &id_priv
->id
.route
.addr
.src_addr
;
1542 id_priv
->cm_id
.iw
->local_addr
= *sin
;
1544 ret
= iw_cm_listen(id_priv
->cm_id
.iw
, backlog
);
1547 iw_destroy_cm_id(id_priv
->cm_id
.iw
);
1548 id_priv
->cm_id
.iw
= NULL
;
1554 static int cma_listen_handler(struct rdma_cm_id
*id
,
1555 struct rdma_cm_event
*event
)
1557 struct rdma_id_private
*id_priv
= id
->context
;
1559 id
->context
= id_priv
->id
.context
;
1560 id
->event_handler
= id_priv
->id
.event_handler
;
1561 return id_priv
->id
.event_handler(id
, event
);
1564 static void cma_listen_on_dev(struct rdma_id_private
*id_priv
,
1565 struct cma_device
*cma_dev
)
1567 struct rdma_id_private
*dev_id_priv
;
1568 struct rdma_cm_id
*id
;
1571 id
= rdma_create_id(cma_listen_handler
, id_priv
, id_priv
->id
.ps
,
1572 id_priv
->id
.qp_type
);
1576 dev_id_priv
= container_of(id
, struct rdma_id_private
, id
);
1578 dev_id_priv
->state
= RDMA_CM_ADDR_BOUND
;
1579 memcpy(&id
->route
.addr
.src_addr
, &id_priv
->id
.route
.addr
.src_addr
,
1580 ip_addr_size((struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
));
1582 cma_attach_to_dev(dev_id_priv
, cma_dev
);
1583 list_add_tail(&dev_id_priv
->listen_list
, &id_priv
->listen_list
);
1584 atomic_inc(&id_priv
->refcount
);
1585 dev_id_priv
->internal_id
= 1;
1586 dev_id_priv
->afonly
= id_priv
->afonly
;
1588 ret
= rdma_listen(id
, id_priv
->backlog
);
1590 printk(KERN_WARNING
"RDMA CMA: cma_listen_on_dev, error %d, "
1591 "listening on device %s\n", ret
, cma_dev
->device
->name
);
1594 static void cma_listen_on_all(struct rdma_id_private
*id_priv
)
1596 struct cma_device
*cma_dev
;
1599 list_add_tail(&id_priv
->list
, &listen_any_list
);
1600 list_for_each_entry(cma_dev
, &dev_list
, list
)
1601 cma_listen_on_dev(id_priv
, cma_dev
);
1602 mutex_unlock(&lock
);
1605 void rdma_set_service_type(struct rdma_cm_id
*id
, int tos
)
1607 struct rdma_id_private
*id_priv
;
1609 id_priv
= container_of(id
, struct rdma_id_private
, id
);
1610 id_priv
->tos
= (u8
) tos
;
1612 EXPORT_SYMBOL(rdma_set_service_type
);
1614 static void cma_query_handler(int status
, struct ib_sa_path_rec
*path_rec
,
1617 struct cma_work
*work
= context
;
1618 struct rdma_route
*route
;
1620 route
= &work
->id
->id
.route
;
1623 route
->num_paths
= 1;
1624 *route
->path_rec
= *path_rec
;
1626 work
->old_state
= RDMA_CM_ROUTE_QUERY
;
1627 work
->new_state
= RDMA_CM_ADDR_RESOLVED
;
1628 work
->event
.event
= RDMA_CM_EVENT_ROUTE_ERROR
;
1629 work
->event
.status
= status
;
1632 queue_work(cma_wq
, &work
->work
);
1635 static int cma_query_ib_route(struct rdma_id_private
*id_priv
, int timeout_ms
,
1636 struct cma_work
*work
)
1638 struct rdma_addr
*addr
= &id_priv
->id
.route
.addr
;
1639 struct ib_sa_path_rec path_rec
;
1640 ib_sa_comp_mask comp_mask
;
1641 struct sockaddr_in6
*sin6
;
1643 memset(&path_rec
, 0, sizeof path_rec
);
1644 rdma_addr_get_sgid(&addr
->dev_addr
, &path_rec
.sgid
);
1645 rdma_addr_get_dgid(&addr
->dev_addr
, &path_rec
.dgid
);
1646 path_rec
.pkey
= cpu_to_be16(ib_addr_get_pkey(&addr
->dev_addr
));
1647 path_rec
.numb_path
= 1;
1648 path_rec
.reversible
= 1;
1649 path_rec
.service_id
= cma_get_service_id(id_priv
->id
.ps
,
1650 (struct sockaddr
*) &addr
->dst_addr
);
1652 comp_mask
= IB_SA_PATH_REC_DGID
| IB_SA_PATH_REC_SGID
|
1653 IB_SA_PATH_REC_PKEY
| IB_SA_PATH_REC_NUMB_PATH
|
1654 IB_SA_PATH_REC_REVERSIBLE
| IB_SA_PATH_REC_SERVICE_ID
;
1656 if (addr
->src_addr
.ss_family
== AF_INET
) {
1657 path_rec
.qos_class
= cpu_to_be16((u16
) id_priv
->tos
);
1658 comp_mask
|= IB_SA_PATH_REC_QOS_CLASS
;
1660 sin6
= (struct sockaddr_in6
*) &addr
->src_addr
;
1661 path_rec
.traffic_class
= (u8
) (be32_to_cpu(sin6
->sin6_flowinfo
) >> 20);
1662 comp_mask
|= IB_SA_PATH_REC_TRAFFIC_CLASS
;
1665 id_priv
->query_id
= ib_sa_path_rec_get(&sa_client
, id_priv
->id
.device
,
1666 id_priv
->id
.port_num
, &path_rec
,
1667 comp_mask
, timeout_ms
,
1668 GFP_KERNEL
, cma_query_handler
,
1669 work
, &id_priv
->query
);
1671 return (id_priv
->query_id
< 0) ? id_priv
->query_id
: 0;
1674 static void cma_work_handler(struct work_struct
*_work
)
1676 struct cma_work
*work
= container_of(_work
, struct cma_work
, work
);
1677 struct rdma_id_private
*id_priv
= work
->id
;
1680 mutex_lock(&id_priv
->handler_mutex
);
1681 if (!cma_comp_exch(id_priv
, work
->old_state
, work
->new_state
))
1684 if (id_priv
->id
.event_handler(&id_priv
->id
, &work
->event
)) {
1685 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
1689 mutex_unlock(&id_priv
->handler_mutex
);
1690 cma_deref_id(id_priv
);
1692 rdma_destroy_id(&id_priv
->id
);
1696 static void cma_ndev_work_handler(struct work_struct
*_work
)
1698 struct cma_ndev_work
*work
= container_of(_work
, struct cma_ndev_work
, work
);
1699 struct rdma_id_private
*id_priv
= work
->id
;
1702 mutex_lock(&id_priv
->handler_mutex
);
1703 if (id_priv
->state
== RDMA_CM_DESTROYING
||
1704 id_priv
->state
== RDMA_CM_DEVICE_REMOVAL
)
1707 if (id_priv
->id
.event_handler(&id_priv
->id
, &work
->event
)) {
1708 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
1713 mutex_unlock(&id_priv
->handler_mutex
);
1714 cma_deref_id(id_priv
);
1716 rdma_destroy_id(&id_priv
->id
);
1720 static int cma_resolve_ib_route(struct rdma_id_private
*id_priv
, int timeout_ms
)
1722 struct rdma_route
*route
= &id_priv
->id
.route
;
1723 struct cma_work
*work
;
1726 work
= kzalloc(sizeof *work
, GFP_KERNEL
);
1731 INIT_WORK(&work
->work
, cma_work_handler
);
1732 work
->old_state
= RDMA_CM_ROUTE_QUERY
;
1733 work
->new_state
= RDMA_CM_ROUTE_RESOLVED
;
1734 work
->event
.event
= RDMA_CM_EVENT_ROUTE_RESOLVED
;
1736 route
->path_rec
= kmalloc(sizeof *route
->path_rec
, GFP_KERNEL
);
1737 if (!route
->path_rec
) {
1742 ret
= cma_query_ib_route(id_priv
, timeout_ms
, work
);
1748 kfree(route
->path_rec
);
1749 route
->path_rec
= NULL
;
1755 int rdma_set_ib_paths(struct rdma_cm_id
*id
,
1756 struct ib_sa_path_rec
*path_rec
, int num_paths
)
1758 struct rdma_id_private
*id_priv
;
1761 id_priv
= container_of(id
, struct rdma_id_private
, id
);
1762 if (!cma_comp_exch(id_priv
, RDMA_CM_ADDR_RESOLVED
,
1763 RDMA_CM_ROUTE_RESOLVED
))
1766 id
->route
.path_rec
= kmemdup(path_rec
, sizeof *path_rec
* num_paths
,
1768 if (!id
->route
.path_rec
) {
1773 id
->route
.num_paths
= num_paths
;
1776 cma_comp_exch(id_priv
, RDMA_CM_ROUTE_RESOLVED
, RDMA_CM_ADDR_RESOLVED
);
1779 EXPORT_SYMBOL(rdma_set_ib_paths
);
1781 static int cma_resolve_iw_route(struct rdma_id_private
*id_priv
, int timeout_ms
)
1783 struct cma_work
*work
;
1785 work
= kzalloc(sizeof *work
, GFP_KERNEL
);
1790 INIT_WORK(&work
->work
, cma_work_handler
);
1791 work
->old_state
= RDMA_CM_ROUTE_QUERY
;
1792 work
->new_state
= RDMA_CM_ROUTE_RESOLVED
;
1793 work
->event
.event
= RDMA_CM_EVENT_ROUTE_RESOLVED
;
1794 queue_work(cma_wq
, &work
->work
);
1798 static int cma_resolve_iboe_route(struct rdma_id_private
*id_priv
)
1800 struct rdma_route
*route
= &id_priv
->id
.route
;
1801 struct rdma_addr
*addr
= &route
->addr
;
1802 struct cma_work
*work
;
1804 struct sockaddr_in
*src_addr
= (struct sockaddr_in
*)&route
->addr
.src_addr
;
1805 struct sockaddr_in
*dst_addr
= (struct sockaddr_in
*)&route
->addr
.dst_addr
;
1806 struct net_device
*ndev
= NULL
;
1809 if (src_addr
->sin_family
!= dst_addr
->sin_family
)
1812 work
= kzalloc(sizeof *work
, GFP_KERNEL
);
1817 INIT_WORK(&work
->work
, cma_work_handler
);
1819 route
->path_rec
= kzalloc(sizeof *route
->path_rec
, GFP_KERNEL
);
1820 if (!route
->path_rec
) {
1825 route
->num_paths
= 1;
1827 if (addr
->dev_addr
.bound_dev_if
)
1828 ndev
= dev_get_by_index(&init_net
, addr
->dev_addr
.bound_dev_if
);
1834 vid
= rdma_vlan_dev_vlan_id(ndev
);
1836 iboe_mac_vlan_to_ll(&route
->path_rec
->sgid
, addr
->dev_addr
.src_dev_addr
, vid
);
1837 iboe_mac_vlan_to_ll(&route
->path_rec
->dgid
, addr
->dev_addr
.dst_dev_addr
, vid
);
1839 route
->path_rec
->hop_limit
= 1;
1840 route
->path_rec
->reversible
= 1;
1841 route
->path_rec
->pkey
= cpu_to_be16(0xffff);
1842 route
->path_rec
->mtu_selector
= IB_SA_EQ
;
1843 route
->path_rec
->sl
= netdev_get_prio_tc_map(
1844 ndev
->priv_flags
& IFF_802_1Q_VLAN
?
1845 vlan_dev_real_dev(ndev
) : ndev
,
1846 rt_tos2priority(id_priv
->tos
));
1848 route
->path_rec
->mtu
= iboe_get_mtu(ndev
->mtu
);
1849 route
->path_rec
->rate_selector
= IB_SA_EQ
;
1850 route
->path_rec
->rate
= iboe_get_rate(ndev
);
1852 route
->path_rec
->packet_life_time_selector
= IB_SA_EQ
;
1853 route
->path_rec
->packet_life_time
= CMA_IBOE_PACKET_LIFETIME
;
1854 if (!route
->path_rec
->mtu
) {
1859 work
->old_state
= RDMA_CM_ROUTE_QUERY
;
1860 work
->new_state
= RDMA_CM_ROUTE_RESOLVED
;
1861 work
->event
.event
= RDMA_CM_EVENT_ROUTE_RESOLVED
;
1862 work
->event
.status
= 0;
1864 queue_work(cma_wq
, &work
->work
);
1869 kfree(route
->path_rec
);
1870 route
->path_rec
= NULL
;
1876 int rdma_resolve_route(struct rdma_cm_id
*id
, int timeout_ms
)
1878 struct rdma_id_private
*id_priv
;
1881 id_priv
= container_of(id
, struct rdma_id_private
, id
);
1882 if (!cma_comp_exch(id_priv
, RDMA_CM_ADDR_RESOLVED
, RDMA_CM_ROUTE_QUERY
))
1885 atomic_inc(&id_priv
->refcount
);
1886 switch (rdma_node_get_transport(id
->device
->node_type
)) {
1887 case RDMA_TRANSPORT_IB
:
1888 switch (rdma_port_get_link_layer(id
->device
, id
->port_num
)) {
1889 case IB_LINK_LAYER_INFINIBAND
:
1890 ret
= cma_resolve_ib_route(id_priv
, timeout_ms
);
1892 case IB_LINK_LAYER_ETHERNET
:
1893 ret
= cma_resolve_iboe_route(id_priv
);
1899 case RDMA_TRANSPORT_IWARP
:
1900 ret
= cma_resolve_iw_route(id_priv
, timeout_ms
);
1911 cma_comp_exch(id_priv
, RDMA_CM_ROUTE_QUERY
, RDMA_CM_ADDR_RESOLVED
);
1912 cma_deref_id(id_priv
);
1915 EXPORT_SYMBOL(rdma_resolve_route
);
1917 static int cma_bind_loopback(struct rdma_id_private
*id_priv
)
1919 struct cma_device
*cma_dev
;
1920 struct ib_port_attr port_attr
;
1927 if (list_empty(&dev_list
)) {
1931 list_for_each_entry(cma_dev
, &dev_list
, list
)
1932 for (p
= 1; p
<= cma_dev
->device
->phys_port_cnt
; ++p
)
1933 if (!ib_query_port(cma_dev
->device
, p
, &port_attr
) &&
1934 port_attr
.state
== IB_PORT_ACTIVE
)
1938 cma_dev
= list_entry(dev_list
.next
, struct cma_device
, list
);
1941 ret
= ib_get_cached_gid(cma_dev
->device
, p
, 0, &gid
);
1945 ret
= ib_get_cached_pkey(cma_dev
->device
, p
, 0, &pkey
);
1949 id_priv
->id
.route
.addr
.dev_addr
.dev_type
=
1950 (rdma_port_get_link_layer(cma_dev
->device
, p
) == IB_LINK_LAYER_INFINIBAND
) ?
1951 ARPHRD_INFINIBAND
: ARPHRD_ETHER
;
1953 rdma_addr_set_sgid(&id_priv
->id
.route
.addr
.dev_addr
, &gid
);
1954 ib_addr_set_pkey(&id_priv
->id
.route
.addr
.dev_addr
, pkey
);
1955 id_priv
->id
.port_num
= p
;
1956 cma_attach_to_dev(id_priv
, cma_dev
);
1958 mutex_unlock(&lock
);
1962 static void addr_handler(int status
, struct sockaddr
*src_addr
,
1963 struct rdma_dev_addr
*dev_addr
, void *context
)
1965 struct rdma_id_private
*id_priv
= context
;
1966 struct rdma_cm_event event
;
1968 memset(&event
, 0, sizeof event
);
1969 mutex_lock(&id_priv
->handler_mutex
);
1970 if (!cma_comp_exch(id_priv
, RDMA_CM_ADDR_QUERY
,
1971 RDMA_CM_ADDR_RESOLVED
))
1974 if (!status
&& !id_priv
->cma_dev
)
1975 status
= cma_acquire_dev(id_priv
);
1978 if (!cma_comp_exch(id_priv
, RDMA_CM_ADDR_RESOLVED
,
1979 RDMA_CM_ADDR_BOUND
))
1981 event
.event
= RDMA_CM_EVENT_ADDR_ERROR
;
1982 event
.status
= status
;
1984 memcpy(&id_priv
->id
.route
.addr
.src_addr
, src_addr
,
1985 ip_addr_size(src_addr
));
1986 event
.event
= RDMA_CM_EVENT_ADDR_RESOLVED
;
1989 if (id_priv
->id
.event_handler(&id_priv
->id
, &event
)) {
1990 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
1991 mutex_unlock(&id_priv
->handler_mutex
);
1992 cma_deref_id(id_priv
);
1993 rdma_destroy_id(&id_priv
->id
);
1997 mutex_unlock(&id_priv
->handler_mutex
);
1998 cma_deref_id(id_priv
);
2001 static int cma_resolve_loopback(struct rdma_id_private
*id_priv
)
2003 struct cma_work
*work
;
2004 struct sockaddr
*src
, *dst
;
2008 work
= kzalloc(sizeof *work
, GFP_KERNEL
);
2012 if (!id_priv
->cma_dev
) {
2013 ret
= cma_bind_loopback(id_priv
);
2018 rdma_addr_get_sgid(&id_priv
->id
.route
.addr
.dev_addr
, &gid
);
2019 rdma_addr_set_dgid(&id_priv
->id
.route
.addr
.dev_addr
, &gid
);
2021 src
= (struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
;
2022 if (cma_zero_addr(src
)) {
2023 dst
= (struct sockaddr
*) &id_priv
->id
.route
.addr
.dst_addr
;
2024 if ((src
->sa_family
= dst
->sa_family
) == AF_INET
) {
2025 ((struct sockaddr_in
*)src
)->sin_addr
=
2026 ((struct sockaddr_in
*)dst
)->sin_addr
;
2028 ((struct sockaddr_in6
*)src
)->sin6_addr
=
2029 ((struct sockaddr_in6
*)dst
)->sin6_addr
;
2034 INIT_WORK(&work
->work
, cma_work_handler
);
2035 work
->old_state
= RDMA_CM_ADDR_QUERY
;
2036 work
->new_state
= RDMA_CM_ADDR_RESOLVED
;
2037 work
->event
.event
= RDMA_CM_EVENT_ADDR_RESOLVED
;
2038 queue_work(cma_wq
, &work
->work
);
2045 static int cma_bind_addr(struct rdma_cm_id
*id
, struct sockaddr
*src_addr
,
2046 struct sockaddr
*dst_addr
)
2048 if (!src_addr
|| !src_addr
->sa_family
) {
2049 src_addr
= (struct sockaddr
*) &id
->route
.addr
.src_addr
;
2050 if ((src_addr
->sa_family
= dst_addr
->sa_family
) == AF_INET6
) {
2051 ((struct sockaddr_in6
*) src_addr
)->sin6_scope_id
=
2052 ((struct sockaddr_in6
*) dst_addr
)->sin6_scope_id
;
2055 return rdma_bind_addr(id
, src_addr
);
2058 int rdma_resolve_addr(struct rdma_cm_id
*id
, struct sockaddr
*src_addr
,
2059 struct sockaddr
*dst_addr
, int timeout_ms
)
2061 struct rdma_id_private
*id_priv
;
2064 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2065 if (id_priv
->state
== RDMA_CM_IDLE
) {
2066 ret
= cma_bind_addr(id
, src_addr
, dst_addr
);
2071 if (!cma_comp_exch(id_priv
, RDMA_CM_ADDR_BOUND
, RDMA_CM_ADDR_QUERY
))
2074 atomic_inc(&id_priv
->refcount
);
2075 memcpy(&id
->route
.addr
.dst_addr
, dst_addr
, ip_addr_size(dst_addr
));
2076 if (cma_any_addr(dst_addr
))
2077 ret
= cma_resolve_loopback(id_priv
);
2079 ret
= rdma_resolve_ip(&addr_client
, (struct sockaddr
*) &id
->route
.addr
.src_addr
,
2080 dst_addr
, &id
->route
.addr
.dev_addr
,
2081 timeout_ms
, addr_handler
, id_priv
);
2087 cma_comp_exch(id_priv
, RDMA_CM_ADDR_QUERY
, RDMA_CM_ADDR_BOUND
);
2088 cma_deref_id(id_priv
);
2091 EXPORT_SYMBOL(rdma_resolve_addr
);
2093 int rdma_set_reuseaddr(struct rdma_cm_id
*id
, int reuse
)
2095 struct rdma_id_private
*id_priv
;
2096 unsigned long flags
;
2099 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2100 spin_lock_irqsave(&id_priv
->lock
, flags
);
2101 if (id_priv
->state
== RDMA_CM_IDLE
) {
2102 id_priv
->reuseaddr
= reuse
;
2107 spin_unlock_irqrestore(&id_priv
->lock
, flags
);
2110 EXPORT_SYMBOL(rdma_set_reuseaddr
);
2112 int rdma_set_afonly(struct rdma_cm_id
*id
, int afonly
)
2114 struct rdma_id_private
*id_priv
;
2115 unsigned long flags
;
2118 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2119 spin_lock_irqsave(&id_priv
->lock
, flags
);
2120 if (id_priv
->state
== RDMA_CM_IDLE
|| id_priv
->state
== RDMA_CM_ADDR_BOUND
) {
2121 id_priv
->options
|= (1 << CMA_OPTION_AFONLY
);
2122 id_priv
->afonly
= afonly
;
2127 spin_unlock_irqrestore(&id_priv
->lock
, flags
);
2130 EXPORT_SYMBOL(rdma_set_afonly
);
2132 static void cma_bind_port(struct rdma_bind_list
*bind_list
,
2133 struct rdma_id_private
*id_priv
)
2135 struct sockaddr_in
*sin
;
2137 sin
= (struct sockaddr_in
*) &id_priv
->id
.route
.addr
.src_addr
;
2138 sin
->sin_port
= htons(bind_list
->port
);
2139 id_priv
->bind_list
= bind_list
;
2140 hlist_add_head(&id_priv
->node
, &bind_list
->owners
);
2143 static int cma_alloc_port(struct idr
*ps
, struct rdma_id_private
*id_priv
,
2144 unsigned short snum
)
2146 struct rdma_bind_list
*bind_list
;
2149 bind_list
= kzalloc(sizeof *bind_list
, GFP_KERNEL
);
2154 ret
= idr_get_new_above(ps
, bind_list
, snum
, &port
);
2155 } while ((ret
== -EAGAIN
) && idr_pre_get(ps
, GFP_KERNEL
));
2161 ret
= -EADDRNOTAVAIL
;
2166 bind_list
->port
= (unsigned short) port
;
2167 cma_bind_port(bind_list
, id_priv
);
2170 idr_remove(ps
, port
);
2176 static int cma_alloc_any_port(struct idr
*ps
, struct rdma_id_private
*id_priv
)
2178 static unsigned int last_used_port
;
2179 int low
, high
, remaining
;
2182 inet_get_local_port_range(&low
, &high
);
2183 remaining
= (high
- low
) + 1;
2184 rover
= net_random() % remaining
+ low
;
2186 if (last_used_port
!= rover
&&
2187 !idr_find(ps
, (unsigned short) rover
)) {
2188 int ret
= cma_alloc_port(ps
, id_priv
, rover
);
2190 * Remember previously used port number in order to avoid
2191 * re-using same port immediately after it is closed.
2194 last_used_port
= rover
;
2195 if (ret
!= -EADDRNOTAVAIL
)
2200 if ((rover
< low
) || (rover
> high
))
2204 return -EADDRNOTAVAIL
;
2208 * Check that the requested port is available. This is called when trying to
2209 * bind to a specific port, or when trying to listen on a bound port. In
2210 * the latter case, the provided id_priv may already be on the bind_list, but
2211 * we still need to check that it's okay to start listening.
2213 static int cma_check_port(struct rdma_bind_list
*bind_list
,
2214 struct rdma_id_private
*id_priv
, uint8_t reuseaddr
)
2216 struct rdma_id_private
*cur_id
;
2217 struct sockaddr
*addr
, *cur_addr
;
2218 struct hlist_node
*node
;
2220 addr
= (struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
;
2221 hlist_for_each_entry(cur_id
, node
, &bind_list
->owners
, node
) {
2222 if (id_priv
== cur_id
)
2225 if ((cur_id
->state
!= RDMA_CM_LISTEN
) && reuseaddr
&&
2229 cur_addr
= (struct sockaddr
*) &cur_id
->id
.route
.addr
.src_addr
;
2230 if (id_priv
->afonly
&& cur_id
->afonly
&&
2231 (addr
->sa_family
!= cur_addr
->sa_family
))
2234 if (cma_any_addr(addr
) || cma_any_addr(cur_addr
))
2235 return -EADDRNOTAVAIL
;
2237 if (!cma_addr_cmp(addr
, cur_addr
))
2243 static int cma_use_port(struct idr
*ps
, struct rdma_id_private
*id_priv
)
2245 struct rdma_bind_list
*bind_list
;
2246 unsigned short snum
;
2249 snum
= ntohs(cma_port((struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
));
2250 if (snum
< PROT_SOCK
&& !capable(CAP_NET_BIND_SERVICE
))
2253 bind_list
= idr_find(ps
, snum
);
2255 ret
= cma_alloc_port(ps
, id_priv
, snum
);
2257 ret
= cma_check_port(bind_list
, id_priv
, id_priv
->reuseaddr
);
2259 cma_bind_port(bind_list
, id_priv
);
2264 static int cma_bind_listen(struct rdma_id_private
*id_priv
)
2266 struct rdma_bind_list
*bind_list
= id_priv
->bind_list
;
2270 if (bind_list
->owners
.first
->next
)
2271 ret
= cma_check_port(bind_list
, id_priv
, 0);
2272 mutex_unlock(&lock
);
2276 static int cma_get_port(struct rdma_id_private
*id_priv
)
2281 switch (id_priv
->id
.ps
) {
2298 return -EPROTONOSUPPORT
;
2302 if (cma_any_port((struct sockaddr
*) &id_priv
->id
.route
.addr
.src_addr
))
2303 ret
= cma_alloc_any_port(ps
, id_priv
);
2305 ret
= cma_use_port(ps
, id_priv
);
2306 mutex_unlock(&lock
);
2311 static int cma_check_linklocal(struct rdma_dev_addr
*dev_addr
,
2312 struct sockaddr
*addr
)
2314 #if IS_ENABLED(CONFIG_IPV6)
2315 struct sockaddr_in6
*sin6
;
2317 if (addr
->sa_family
!= AF_INET6
)
2320 sin6
= (struct sockaddr_in6
*) addr
;
2321 if ((ipv6_addr_type(&sin6
->sin6_addr
) & IPV6_ADDR_LINKLOCAL
) &&
2322 !sin6
->sin6_scope_id
)
2325 dev_addr
->bound_dev_if
= sin6
->sin6_scope_id
;
2330 int rdma_listen(struct rdma_cm_id
*id
, int backlog
)
2332 struct rdma_id_private
*id_priv
;
2335 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2336 if (id_priv
->state
== RDMA_CM_IDLE
) {
2337 ((struct sockaddr
*) &id
->route
.addr
.src_addr
)->sa_family
= AF_INET
;
2338 ret
= rdma_bind_addr(id
, (struct sockaddr
*) &id
->route
.addr
.src_addr
);
2343 if (!cma_comp_exch(id_priv
, RDMA_CM_ADDR_BOUND
, RDMA_CM_LISTEN
))
2346 if (id_priv
->reuseaddr
) {
2347 ret
= cma_bind_listen(id_priv
);
2352 id_priv
->backlog
= backlog
;
2354 switch (rdma_node_get_transport(id
->device
->node_type
)) {
2355 case RDMA_TRANSPORT_IB
:
2356 ret
= cma_ib_listen(id_priv
);
2360 case RDMA_TRANSPORT_IWARP
:
2361 ret
= cma_iw_listen(id_priv
, backlog
);
2370 cma_listen_on_all(id_priv
);
2374 id_priv
->backlog
= 0;
2375 cma_comp_exch(id_priv
, RDMA_CM_LISTEN
, RDMA_CM_ADDR_BOUND
);
2378 EXPORT_SYMBOL(rdma_listen
);
2380 int rdma_bind_addr(struct rdma_cm_id
*id
, struct sockaddr
*addr
)
2382 struct rdma_id_private
*id_priv
;
2385 if (addr
->sa_family
!= AF_INET
&& addr
->sa_family
!= AF_INET6
)
2386 return -EAFNOSUPPORT
;
2388 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2389 if (!cma_comp_exch(id_priv
, RDMA_CM_IDLE
, RDMA_CM_ADDR_BOUND
))
2392 ret
= cma_check_linklocal(&id
->route
.addr
.dev_addr
, addr
);
2396 if (!cma_any_addr(addr
)) {
2397 ret
= rdma_translate_ip(addr
, &id
->route
.addr
.dev_addr
);
2401 ret
= cma_acquire_dev(id_priv
);
2406 memcpy(&id
->route
.addr
.src_addr
, addr
, ip_addr_size(addr
));
2407 if (!(id_priv
->options
& (1 << CMA_OPTION_AFONLY
))) {
2408 if (addr
->sa_family
== AF_INET
)
2409 id_priv
->afonly
= 1;
2410 #if IS_ENABLED(CONFIG_IPV6)
2411 else if (addr
->sa_family
== AF_INET6
)
2412 id_priv
->afonly
= init_net
.ipv6
.sysctl
.bindv6only
;
2415 ret
= cma_get_port(id_priv
);
2421 if (id_priv
->cma_dev
)
2422 cma_release_dev(id_priv
);
2424 cma_comp_exch(id_priv
, RDMA_CM_ADDR_BOUND
, RDMA_CM_IDLE
);
2427 EXPORT_SYMBOL(rdma_bind_addr
);
2429 static int cma_format_hdr(void *hdr
, enum rdma_port_space ps
,
2430 struct rdma_route
*route
)
2432 struct cma_hdr
*cma_hdr
;
2433 struct sdp_hh
*sdp_hdr
;
2435 if (route
->addr
.src_addr
.ss_family
== AF_INET
) {
2436 struct sockaddr_in
*src4
, *dst4
;
2438 src4
= (struct sockaddr_in
*) &route
->addr
.src_addr
;
2439 dst4
= (struct sockaddr_in
*) &route
->addr
.dst_addr
;
2444 if (sdp_get_majv(sdp_hdr
->sdp_version
) != SDP_MAJ_VERSION
)
2446 sdp_set_ip_ver(sdp_hdr
, 4);
2447 sdp_hdr
->src_addr
.ip4
.addr
= src4
->sin_addr
.s_addr
;
2448 sdp_hdr
->dst_addr
.ip4
.addr
= dst4
->sin_addr
.s_addr
;
2449 sdp_hdr
->port
= src4
->sin_port
;
2453 cma_hdr
->cma_version
= CMA_VERSION
;
2454 cma_set_ip_ver(cma_hdr
, 4);
2455 cma_hdr
->src_addr
.ip4
.addr
= src4
->sin_addr
.s_addr
;
2456 cma_hdr
->dst_addr
.ip4
.addr
= dst4
->sin_addr
.s_addr
;
2457 cma_hdr
->port
= src4
->sin_port
;
2461 struct sockaddr_in6
*src6
, *dst6
;
2463 src6
= (struct sockaddr_in6
*) &route
->addr
.src_addr
;
2464 dst6
= (struct sockaddr_in6
*) &route
->addr
.dst_addr
;
2469 if (sdp_get_majv(sdp_hdr
->sdp_version
) != SDP_MAJ_VERSION
)
2471 sdp_set_ip_ver(sdp_hdr
, 6);
2472 sdp_hdr
->src_addr
.ip6
= src6
->sin6_addr
;
2473 sdp_hdr
->dst_addr
.ip6
= dst6
->sin6_addr
;
2474 sdp_hdr
->port
= src6
->sin6_port
;
2478 cma_hdr
->cma_version
= CMA_VERSION
;
2479 cma_set_ip_ver(cma_hdr
, 6);
2480 cma_hdr
->src_addr
.ip6
= src6
->sin6_addr
;
2481 cma_hdr
->dst_addr
.ip6
= dst6
->sin6_addr
;
2482 cma_hdr
->port
= src6
->sin6_port
;
2489 static int cma_sidr_rep_handler(struct ib_cm_id
*cm_id
,
2490 struct ib_cm_event
*ib_event
)
2492 struct rdma_id_private
*id_priv
= cm_id
->context
;
2493 struct rdma_cm_event event
;
2494 struct ib_cm_sidr_rep_event_param
*rep
= &ib_event
->param
.sidr_rep_rcvd
;
2497 if (cma_disable_callback(id_priv
, RDMA_CM_CONNECT
))
2500 memset(&event
, 0, sizeof event
);
2501 switch (ib_event
->event
) {
2502 case IB_CM_SIDR_REQ_ERROR
:
2503 event
.event
= RDMA_CM_EVENT_UNREACHABLE
;
2504 event
.status
= -ETIMEDOUT
;
2506 case IB_CM_SIDR_REP_RECEIVED
:
2507 event
.param
.ud
.private_data
= ib_event
->private_data
;
2508 event
.param
.ud
.private_data_len
= IB_CM_SIDR_REP_PRIVATE_DATA_SIZE
;
2509 if (rep
->status
!= IB_SIDR_SUCCESS
) {
2510 event
.event
= RDMA_CM_EVENT_UNREACHABLE
;
2511 event
.status
= ib_event
->param
.sidr_rep_rcvd
.status
;
2514 ret
= cma_set_qkey(id_priv
);
2516 event
.event
= RDMA_CM_EVENT_ADDR_ERROR
;
2517 event
.status
= -EINVAL
;
2520 if (id_priv
->qkey
!= rep
->qkey
) {
2521 event
.event
= RDMA_CM_EVENT_UNREACHABLE
;
2522 event
.status
= -EINVAL
;
2525 ib_init_ah_from_path(id_priv
->id
.device
, id_priv
->id
.port_num
,
2526 id_priv
->id
.route
.path_rec
,
2527 &event
.param
.ud
.ah_attr
);
2528 event
.param
.ud
.qp_num
= rep
->qpn
;
2529 event
.param
.ud
.qkey
= rep
->qkey
;
2530 event
.event
= RDMA_CM_EVENT_ESTABLISHED
;
2534 printk(KERN_ERR
"RDMA CMA: unexpected IB CM event: %d\n",
2539 ret
= id_priv
->id
.event_handler(&id_priv
->id
, &event
);
2541 /* Destroy the CM ID by returning a non-zero value. */
2542 id_priv
->cm_id
.ib
= NULL
;
2543 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
2544 mutex_unlock(&id_priv
->handler_mutex
);
2545 rdma_destroy_id(&id_priv
->id
);
2549 mutex_unlock(&id_priv
->handler_mutex
);
2553 static int cma_resolve_ib_udp(struct rdma_id_private
*id_priv
,
2554 struct rdma_conn_param
*conn_param
)
2556 struct ib_cm_sidr_req_param req
;
2557 struct rdma_route
*route
;
2558 struct ib_cm_id
*id
;
2561 req
.private_data_len
= sizeof(struct cma_hdr
) +
2562 conn_param
->private_data_len
;
2563 if (req
.private_data_len
< conn_param
->private_data_len
)
2566 req
.private_data
= kzalloc(req
.private_data_len
, GFP_ATOMIC
);
2567 if (!req
.private_data
)
2570 if (conn_param
->private_data
&& conn_param
->private_data_len
)
2571 memcpy((void *) req
.private_data
+ sizeof(struct cma_hdr
),
2572 conn_param
->private_data
, conn_param
->private_data_len
);
2574 route
= &id_priv
->id
.route
;
2575 ret
= cma_format_hdr((void *) req
.private_data
, id_priv
->id
.ps
, route
);
2579 id
= ib_create_cm_id(id_priv
->id
.device
, cma_sidr_rep_handler
,
2585 id_priv
->cm_id
.ib
= id
;
2587 req
.path
= route
->path_rec
;
2588 req
.service_id
= cma_get_service_id(id_priv
->id
.ps
,
2589 (struct sockaddr
*) &route
->addr
.dst_addr
);
2590 req
.timeout_ms
= 1 << (CMA_CM_RESPONSE_TIMEOUT
- 8);
2591 req
.max_cm_retries
= CMA_MAX_CM_RETRIES
;
2593 ret
= ib_send_cm_sidr_req(id_priv
->cm_id
.ib
, &req
);
2595 ib_destroy_cm_id(id_priv
->cm_id
.ib
);
2596 id_priv
->cm_id
.ib
= NULL
;
2599 kfree(req
.private_data
);
2603 static int cma_connect_ib(struct rdma_id_private
*id_priv
,
2604 struct rdma_conn_param
*conn_param
)
2606 struct ib_cm_req_param req
;
2607 struct rdma_route
*route
;
2609 struct ib_cm_id
*id
;
2612 memset(&req
, 0, sizeof req
);
2613 offset
= cma_user_data_offset(id_priv
->id
.ps
);
2614 req
.private_data_len
= offset
+ conn_param
->private_data_len
;
2615 if (req
.private_data_len
< conn_param
->private_data_len
)
2618 private_data
= kzalloc(req
.private_data_len
, GFP_ATOMIC
);
2622 if (conn_param
->private_data
&& conn_param
->private_data_len
)
2623 memcpy(private_data
+ offset
, conn_param
->private_data
,
2624 conn_param
->private_data_len
);
2626 id
= ib_create_cm_id(id_priv
->id
.device
, cma_ib_handler
, id_priv
);
2631 id_priv
->cm_id
.ib
= id
;
2633 route
= &id_priv
->id
.route
;
2634 ret
= cma_format_hdr(private_data
, id_priv
->id
.ps
, route
);
2637 req
.private_data
= private_data
;
2639 req
.primary_path
= &route
->path_rec
[0];
2640 if (route
->num_paths
== 2)
2641 req
.alternate_path
= &route
->path_rec
[1];
2643 req
.service_id
= cma_get_service_id(id_priv
->id
.ps
,
2644 (struct sockaddr
*) &route
->addr
.dst_addr
);
2645 req
.qp_num
= id_priv
->qp_num
;
2646 req
.qp_type
= id_priv
->id
.qp_type
;
2647 req
.starting_psn
= id_priv
->seq_num
;
2648 req
.responder_resources
= conn_param
->responder_resources
;
2649 req
.initiator_depth
= conn_param
->initiator_depth
;
2650 req
.flow_control
= conn_param
->flow_control
;
2651 req
.retry_count
= min_t(u8
, 7, conn_param
->retry_count
);
2652 req
.rnr_retry_count
= min_t(u8
, 7, conn_param
->rnr_retry_count
);
2653 req
.remote_cm_response_timeout
= CMA_CM_RESPONSE_TIMEOUT
;
2654 req
.local_cm_response_timeout
= CMA_CM_RESPONSE_TIMEOUT
;
2655 req
.max_cm_retries
= CMA_MAX_CM_RETRIES
;
2656 req
.srq
= id_priv
->srq
? 1 : 0;
2658 ret
= ib_send_cm_req(id_priv
->cm_id
.ib
, &req
);
2660 if (ret
&& !IS_ERR(id
)) {
2661 ib_destroy_cm_id(id
);
2662 id_priv
->cm_id
.ib
= NULL
;
2665 kfree(private_data
);
2669 static int cma_connect_iw(struct rdma_id_private
*id_priv
,
2670 struct rdma_conn_param
*conn_param
)
2672 struct iw_cm_id
*cm_id
;
2673 struct sockaddr_in
* sin
;
2675 struct iw_cm_conn_param iw_param
;
2677 cm_id
= iw_create_cm_id(id_priv
->id
.device
, cma_iw_handler
, id_priv
);
2679 return PTR_ERR(cm_id
);
2681 id_priv
->cm_id
.iw
= cm_id
;
2683 sin
= (struct sockaddr_in
*) &id_priv
->id
.route
.addr
.src_addr
;
2684 cm_id
->local_addr
= *sin
;
2686 sin
= (struct sockaddr_in
*) &id_priv
->id
.route
.addr
.dst_addr
;
2687 cm_id
->remote_addr
= *sin
;
2689 ret
= cma_modify_qp_rtr(id_priv
, conn_param
);
2694 iw_param
.ord
= conn_param
->initiator_depth
;
2695 iw_param
.ird
= conn_param
->responder_resources
;
2696 iw_param
.private_data
= conn_param
->private_data
;
2697 iw_param
.private_data_len
= conn_param
->private_data_len
;
2698 iw_param
.qpn
= id_priv
->id
.qp
? id_priv
->qp_num
: conn_param
->qp_num
;
2700 memset(&iw_param
, 0, sizeof iw_param
);
2701 iw_param
.qpn
= id_priv
->qp_num
;
2703 ret
= iw_cm_connect(cm_id
, &iw_param
);
2706 iw_destroy_cm_id(cm_id
);
2707 id_priv
->cm_id
.iw
= NULL
;
2712 int rdma_connect(struct rdma_cm_id
*id
, struct rdma_conn_param
*conn_param
)
2714 struct rdma_id_private
*id_priv
;
2717 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2718 if (!cma_comp_exch(id_priv
, RDMA_CM_ROUTE_RESOLVED
, RDMA_CM_CONNECT
))
2722 id_priv
->qp_num
= conn_param
->qp_num
;
2723 id_priv
->srq
= conn_param
->srq
;
2726 switch (rdma_node_get_transport(id
->device
->node_type
)) {
2727 case RDMA_TRANSPORT_IB
:
2728 if (id
->qp_type
== IB_QPT_UD
)
2729 ret
= cma_resolve_ib_udp(id_priv
, conn_param
);
2731 ret
= cma_connect_ib(id_priv
, conn_param
);
2733 case RDMA_TRANSPORT_IWARP
:
2734 ret
= cma_connect_iw(id_priv
, conn_param
);
2745 cma_comp_exch(id_priv
, RDMA_CM_CONNECT
, RDMA_CM_ROUTE_RESOLVED
);
2748 EXPORT_SYMBOL(rdma_connect
);
2750 static int cma_accept_ib(struct rdma_id_private
*id_priv
,
2751 struct rdma_conn_param
*conn_param
)
2753 struct ib_cm_rep_param rep
;
2756 ret
= cma_modify_qp_rtr(id_priv
, conn_param
);
2760 ret
= cma_modify_qp_rts(id_priv
, conn_param
);
2764 memset(&rep
, 0, sizeof rep
);
2765 rep
.qp_num
= id_priv
->qp_num
;
2766 rep
.starting_psn
= id_priv
->seq_num
;
2767 rep
.private_data
= conn_param
->private_data
;
2768 rep
.private_data_len
= conn_param
->private_data_len
;
2769 rep
.responder_resources
= conn_param
->responder_resources
;
2770 rep
.initiator_depth
= conn_param
->initiator_depth
;
2771 rep
.failover_accepted
= 0;
2772 rep
.flow_control
= conn_param
->flow_control
;
2773 rep
.rnr_retry_count
= min_t(u8
, 7, conn_param
->rnr_retry_count
);
2774 rep
.srq
= id_priv
->srq
? 1 : 0;
2776 ret
= ib_send_cm_rep(id_priv
->cm_id
.ib
, &rep
);
2781 static int cma_accept_iw(struct rdma_id_private
*id_priv
,
2782 struct rdma_conn_param
*conn_param
)
2784 struct iw_cm_conn_param iw_param
;
2787 ret
= cma_modify_qp_rtr(id_priv
, conn_param
);
2791 iw_param
.ord
= conn_param
->initiator_depth
;
2792 iw_param
.ird
= conn_param
->responder_resources
;
2793 iw_param
.private_data
= conn_param
->private_data
;
2794 iw_param
.private_data_len
= conn_param
->private_data_len
;
2795 if (id_priv
->id
.qp
) {
2796 iw_param
.qpn
= id_priv
->qp_num
;
2798 iw_param
.qpn
= conn_param
->qp_num
;
2800 return iw_cm_accept(id_priv
->cm_id
.iw
, &iw_param
);
2803 static int cma_send_sidr_rep(struct rdma_id_private
*id_priv
,
2804 enum ib_cm_sidr_status status
,
2805 const void *private_data
, int private_data_len
)
2807 struct ib_cm_sidr_rep_param rep
;
2810 memset(&rep
, 0, sizeof rep
);
2811 rep
.status
= status
;
2812 if (status
== IB_SIDR_SUCCESS
) {
2813 ret
= cma_set_qkey(id_priv
);
2816 rep
.qp_num
= id_priv
->qp_num
;
2817 rep
.qkey
= id_priv
->qkey
;
2819 rep
.private_data
= private_data
;
2820 rep
.private_data_len
= private_data_len
;
2822 return ib_send_cm_sidr_rep(id_priv
->cm_id
.ib
, &rep
);
2825 int rdma_accept(struct rdma_cm_id
*id
, struct rdma_conn_param
*conn_param
)
2827 struct rdma_id_private
*id_priv
;
2830 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2832 id_priv
->owner
= task_pid_nr(current
);
2834 if (!cma_comp(id_priv
, RDMA_CM_CONNECT
))
2837 if (!id
->qp
&& conn_param
) {
2838 id_priv
->qp_num
= conn_param
->qp_num
;
2839 id_priv
->srq
= conn_param
->srq
;
2842 switch (rdma_node_get_transport(id
->device
->node_type
)) {
2843 case RDMA_TRANSPORT_IB
:
2844 if (id
->qp_type
== IB_QPT_UD
) {
2846 ret
= cma_send_sidr_rep(id_priv
, IB_SIDR_SUCCESS
,
2847 conn_param
->private_data
,
2848 conn_param
->private_data_len
);
2850 ret
= cma_send_sidr_rep(id_priv
, IB_SIDR_SUCCESS
,
2854 ret
= cma_accept_ib(id_priv
, conn_param
);
2856 ret
= cma_rep_recv(id_priv
);
2859 case RDMA_TRANSPORT_IWARP
:
2860 ret
= cma_accept_iw(id_priv
, conn_param
);
2872 cma_modify_qp_err(id_priv
);
2873 rdma_reject(id
, NULL
, 0);
2876 EXPORT_SYMBOL(rdma_accept
);
2878 int rdma_notify(struct rdma_cm_id
*id
, enum ib_event_type event
)
2880 struct rdma_id_private
*id_priv
;
2883 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2884 if (!id_priv
->cm_id
.ib
)
2887 switch (id
->device
->node_type
) {
2888 case RDMA_NODE_IB_CA
:
2889 ret
= ib_cm_notify(id_priv
->cm_id
.ib
, event
);
2897 EXPORT_SYMBOL(rdma_notify
);
2899 int rdma_reject(struct rdma_cm_id
*id
, const void *private_data
,
2900 u8 private_data_len
)
2902 struct rdma_id_private
*id_priv
;
2905 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2906 if (!id_priv
->cm_id
.ib
)
2909 switch (rdma_node_get_transport(id
->device
->node_type
)) {
2910 case RDMA_TRANSPORT_IB
:
2911 if (id
->qp_type
== IB_QPT_UD
)
2912 ret
= cma_send_sidr_rep(id_priv
, IB_SIDR_REJECT
,
2913 private_data
, private_data_len
);
2915 ret
= ib_send_cm_rej(id_priv
->cm_id
.ib
,
2916 IB_CM_REJ_CONSUMER_DEFINED
, NULL
,
2917 0, private_data
, private_data_len
);
2919 case RDMA_TRANSPORT_IWARP
:
2920 ret
= iw_cm_reject(id_priv
->cm_id
.iw
,
2921 private_data
, private_data_len
);
2929 EXPORT_SYMBOL(rdma_reject
);
2931 int rdma_disconnect(struct rdma_cm_id
*id
)
2933 struct rdma_id_private
*id_priv
;
2936 id_priv
= container_of(id
, struct rdma_id_private
, id
);
2937 if (!id_priv
->cm_id
.ib
)
2940 switch (rdma_node_get_transport(id
->device
->node_type
)) {
2941 case RDMA_TRANSPORT_IB
:
2942 ret
= cma_modify_qp_err(id_priv
);
2945 /* Initiate or respond to a disconnect. */
2946 if (ib_send_cm_dreq(id_priv
->cm_id
.ib
, NULL
, 0))
2947 ib_send_cm_drep(id_priv
->cm_id
.ib
, NULL
, 0);
2949 case RDMA_TRANSPORT_IWARP
:
2950 ret
= iw_cm_disconnect(id_priv
->cm_id
.iw
, 0);
2959 EXPORT_SYMBOL(rdma_disconnect
);
2961 static int cma_ib_mc_handler(int status
, struct ib_sa_multicast
*multicast
)
2963 struct rdma_id_private
*id_priv
;
2964 struct cma_multicast
*mc
= multicast
->context
;
2965 struct rdma_cm_event event
;
2968 id_priv
= mc
->id_priv
;
2969 if (cma_disable_callback(id_priv
, RDMA_CM_ADDR_BOUND
) &&
2970 cma_disable_callback(id_priv
, RDMA_CM_ADDR_RESOLVED
))
2973 mutex_lock(&id_priv
->qp_mutex
);
2974 if (!status
&& id_priv
->id
.qp
)
2975 status
= ib_attach_mcast(id_priv
->id
.qp
, &multicast
->rec
.mgid
,
2976 be16_to_cpu(multicast
->rec
.mlid
));
2977 mutex_unlock(&id_priv
->qp_mutex
);
2979 memset(&event
, 0, sizeof event
);
2980 event
.status
= status
;
2981 event
.param
.ud
.private_data
= mc
->context
;
2983 event
.event
= RDMA_CM_EVENT_MULTICAST_JOIN
;
2984 ib_init_ah_from_mcmember(id_priv
->id
.device
,
2985 id_priv
->id
.port_num
, &multicast
->rec
,
2986 &event
.param
.ud
.ah_attr
);
2987 event
.param
.ud
.qp_num
= 0xFFFFFF;
2988 event
.param
.ud
.qkey
= be32_to_cpu(multicast
->rec
.qkey
);
2990 event
.event
= RDMA_CM_EVENT_MULTICAST_ERROR
;
2992 ret
= id_priv
->id
.event_handler(&id_priv
->id
, &event
);
2994 cma_exch(id_priv
, RDMA_CM_DESTROYING
);
2995 mutex_unlock(&id_priv
->handler_mutex
);
2996 rdma_destroy_id(&id_priv
->id
);
3000 mutex_unlock(&id_priv
->handler_mutex
);
3004 static void cma_set_mgid(struct rdma_id_private
*id_priv
,
3005 struct sockaddr
*addr
, union ib_gid
*mgid
)
3007 unsigned char mc_map
[MAX_ADDR_LEN
];
3008 struct rdma_dev_addr
*dev_addr
= &id_priv
->id
.route
.addr
.dev_addr
;
3009 struct sockaddr_in
*sin
= (struct sockaddr_in
*) addr
;
3010 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) addr
;
3012 if (cma_any_addr(addr
)) {
3013 memset(mgid
, 0, sizeof *mgid
);
3014 } else if ((addr
->sa_family
== AF_INET6
) &&
3015 ((be32_to_cpu(sin6
->sin6_addr
.s6_addr32
[0]) & 0xFFF0FFFF) ==
3017 /* IPv6 address is an SA assigned MGID. */
3018 memcpy(mgid
, &sin6
->sin6_addr
, sizeof *mgid
);
3019 } else if ((addr
->sa_family
== AF_INET6
)) {
3020 ipv6_ib_mc_map(&sin6
->sin6_addr
, dev_addr
->broadcast
, mc_map
);
3021 if (id_priv
->id
.ps
== RDMA_PS_UDP
)
3022 mc_map
[7] = 0x01; /* Use RDMA CM signature */
3023 *mgid
= *(union ib_gid
*) (mc_map
+ 4);
3025 ip_ib_mc_map(sin
->sin_addr
.s_addr
, dev_addr
->broadcast
, mc_map
);
3026 if (id_priv
->id
.ps
== RDMA_PS_UDP
)
3027 mc_map
[7] = 0x01; /* Use RDMA CM signature */
3028 *mgid
= *(union ib_gid
*) (mc_map
+ 4);
3032 static int cma_join_ib_multicast(struct rdma_id_private
*id_priv
,
3033 struct cma_multicast
*mc
)
3035 struct ib_sa_mcmember_rec rec
;
3036 struct rdma_dev_addr
*dev_addr
= &id_priv
->id
.route
.addr
.dev_addr
;
3037 ib_sa_comp_mask comp_mask
;
3040 ib_addr_get_mgid(dev_addr
, &rec
.mgid
);
3041 ret
= ib_sa_get_mcmember_rec(id_priv
->id
.device
, id_priv
->id
.port_num
,
3046 cma_set_mgid(id_priv
, (struct sockaddr
*) &mc
->addr
, &rec
.mgid
);
3047 if (id_priv
->id
.ps
== RDMA_PS_UDP
)
3048 rec
.qkey
= cpu_to_be32(RDMA_UDP_QKEY
);
3049 rdma_addr_get_sgid(dev_addr
, &rec
.port_gid
);
3050 rec
.pkey
= cpu_to_be16(ib_addr_get_pkey(dev_addr
));
3053 comp_mask
= IB_SA_MCMEMBER_REC_MGID
| IB_SA_MCMEMBER_REC_PORT_GID
|
3054 IB_SA_MCMEMBER_REC_PKEY
| IB_SA_MCMEMBER_REC_JOIN_STATE
|
3055 IB_SA_MCMEMBER_REC_QKEY
| IB_SA_MCMEMBER_REC_SL
|
3056 IB_SA_MCMEMBER_REC_FLOW_LABEL
|
3057 IB_SA_MCMEMBER_REC_TRAFFIC_CLASS
;
3059 if (id_priv
->id
.ps
== RDMA_PS_IPOIB
)
3060 comp_mask
|= IB_SA_MCMEMBER_REC_RATE
|
3061 IB_SA_MCMEMBER_REC_RATE_SELECTOR
|
3062 IB_SA_MCMEMBER_REC_MTU_SELECTOR
|
3063 IB_SA_MCMEMBER_REC_MTU
|
3064 IB_SA_MCMEMBER_REC_HOP_LIMIT
;
3066 mc
->multicast
.ib
= ib_sa_join_multicast(&sa_client
, id_priv
->id
.device
,
3067 id_priv
->id
.port_num
, &rec
,
3068 comp_mask
, GFP_KERNEL
,
3069 cma_ib_mc_handler
, mc
);
3070 return PTR_RET(mc
->multicast
.ib
);
3073 static void iboe_mcast_work_handler(struct work_struct
*work
)
3075 struct iboe_mcast_work
*mw
= container_of(work
, struct iboe_mcast_work
, work
);
3076 struct cma_multicast
*mc
= mw
->mc
;
3077 struct ib_sa_multicast
*m
= mc
->multicast
.ib
;
3079 mc
->multicast
.ib
->context
= mc
;
3080 cma_ib_mc_handler(0, m
);
3081 kref_put(&mc
->mcref
, release_mc
);
3085 static void cma_iboe_set_mgid(struct sockaddr
*addr
, union ib_gid
*mgid
)
3087 struct sockaddr_in
*sin
= (struct sockaddr_in
*)addr
;
3088 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)addr
;
3090 if (cma_any_addr(addr
)) {
3091 memset(mgid
, 0, sizeof *mgid
);
3092 } else if (addr
->sa_family
== AF_INET6
) {
3093 memcpy(mgid
, &sin6
->sin6_addr
, sizeof *mgid
);
3095 mgid
->raw
[0] = 0xff;
3096 mgid
->raw
[1] = 0x0e;
3105 mgid
->raw
[10] = 0xff;
3106 mgid
->raw
[11] = 0xff;
3107 *(__be32
*)(&mgid
->raw
[12]) = sin
->sin_addr
.s_addr
;
3111 static int cma_iboe_join_multicast(struct rdma_id_private
*id_priv
,
3112 struct cma_multicast
*mc
)
3114 struct iboe_mcast_work
*work
;
3115 struct rdma_dev_addr
*dev_addr
= &id_priv
->id
.route
.addr
.dev_addr
;
3117 struct sockaddr
*addr
= (struct sockaddr
*)&mc
->addr
;
3118 struct net_device
*ndev
= NULL
;
3120 if (cma_zero_addr((struct sockaddr
*)&mc
->addr
))
3123 work
= kzalloc(sizeof *work
, GFP_KERNEL
);
3127 mc
->multicast
.ib
= kzalloc(sizeof(struct ib_sa_multicast
), GFP_KERNEL
);
3128 if (!mc
->multicast
.ib
) {
3133 cma_iboe_set_mgid(addr
, &mc
->multicast
.ib
->rec
.mgid
);
3135 mc
->multicast
.ib
->rec
.pkey
= cpu_to_be16(0xffff);
3136 if (id_priv
->id
.ps
== RDMA_PS_UDP
)
3137 mc
->multicast
.ib
->rec
.qkey
= cpu_to_be32(RDMA_UDP_QKEY
);
3139 if (dev_addr
->bound_dev_if
)
3140 ndev
= dev_get_by_index(&init_net
, dev_addr
->bound_dev_if
);
3145 mc
->multicast
.ib
->rec
.rate
= iboe_get_rate(ndev
);
3146 mc
->multicast
.ib
->rec
.hop_limit
= 1;
3147 mc
->multicast
.ib
->rec
.mtu
= iboe_get_mtu(ndev
->mtu
);
3149 if (!mc
->multicast
.ib
->rec
.mtu
) {
3153 iboe_addr_get_sgid(dev_addr
, &mc
->multicast
.ib
->rec
.port_gid
);
3156 INIT_WORK(&work
->work
, iboe_mcast_work_handler
);
3157 kref_get(&mc
->mcref
);
3158 queue_work(cma_wq
, &work
->work
);
3163 kfree(mc
->multicast
.ib
);
3169 int rdma_join_multicast(struct rdma_cm_id
*id
, struct sockaddr
*addr
,
3172 struct rdma_id_private
*id_priv
;
3173 struct cma_multicast
*mc
;
3176 id_priv
= container_of(id
, struct rdma_id_private
, id
);
3177 if (!cma_comp(id_priv
, RDMA_CM_ADDR_BOUND
) &&
3178 !cma_comp(id_priv
, RDMA_CM_ADDR_RESOLVED
))
3181 mc
= kmalloc(sizeof *mc
, GFP_KERNEL
);
3185 memcpy(&mc
->addr
, addr
, ip_addr_size(addr
));
3186 mc
->context
= context
;
3187 mc
->id_priv
= id_priv
;
3189 spin_lock(&id_priv
->lock
);
3190 list_add(&mc
->list
, &id_priv
->mc_list
);
3191 spin_unlock(&id_priv
->lock
);
3193 switch (rdma_node_get_transport(id
->device
->node_type
)) {
3194 case RDMA_TRANSPORT_IB
:
3195 switch (rdma_port_get_link_layer(id
->device
, id
->port_num
)) {
3196 case IB_LINK_LAYER_INFINIBAND
:
3197 ret
= cma_join_ib_multicast(id_priv
, mc
);
3199 case IB_LINK_LAYER_ETHERNET
:
3200 kref_init(&mc
->mcref
);
3201 ret
= cma_iboe_join_multicast(id_priv
, mc
);
3213 spin_lock_irq(&id_priv
->lock
);
3214 list_del(&mc
->list
);
3215 spin_unlock_irq(&id_priv
->lock
);
3220 EXPORT_SYMBOL(rdma_join_multicast
);
3222 void rdma_leave_multicast(struct rdma_cm_id
*id
, struct sockaddr
*addr
)
3224 struct rdma_id_private
*id_priv
;
3225 struct cma_multicast
*mc
;
3227 id_priv
= container_of(id
, struct rdma_id_private
, id
);
3228 spin_lock_irq(&id_priv
->lock
);
3229 list_for_each_entry(mc
, &id_priv
->mc_list
, list
) {
3230 if (!memcmp(&mc
->addr
, addr
, ip_addr_size(addr
))) {
3231 list_del(&mc
->list
);
3232 spin_unlock_irq(&id_priv
->lock
);
3235 ib_detach_mcast(id
->qp
,
3236 &mc
->multicast
.ib
->rec
.mgid
,
3237 be16_to_cpu(mc
->multicast
.ib
->rec
.mlid
));
3238 if (rdma_node_get_transport(id_priv
->cma_dev
->device
->node_type
) == RDMA_TRANSPORT_IB
) {
3239 switch (rdma_port_get_link_layer(id
->device
, id
->port_num
)) {
3240 case IB_LINK_LAYER_INFINIBAND
:
3241 ib_sa_free_multicast(mc
->multicast
.ib
);
3244 case IB_LINK_LAYER_ETHERNET
:
3245 kref_put(&mc
->mcref
, release_mc
);
3254 spin_unlock_irq(&id_priv
->lock
);
3256 EXPORT_SYMBOL(rdma_leave_multicast
);
3258 static int cma_netdev_change(struct net_device
*ndev
, struct rdma_id_private
*id_priv
)
3260 struct rdma_dev_addr
*dev_addr
;
3261 struct cma_ndev_work
*work
;
3263 dev_addr
= &id_priv
->id
.route
.addr
.dev_addr
;
3265 if ((dev_addr
->bound_dev_if
== ndev
->ifindex
) &&
3266 memcmp(dev_addr
->src_dev_addr
, ndev
->dev_addr
, ndev
->addr_len
)) {
3267 printk(KERN_INFO
"RDMA CM addr change for ndev %s used by id %p\n",
3268 ndev
->name
, &id_priv
->id
);
3269 work
= kzalloc(sizeof *work
, GFP_KERNEL
);
3273 INIT_WORK(&work
->work
, cma_ndev_work_handler
);
3275 work
->event
.event
= RDMA_CM_EVENT_ADDR_CHANGE
;
3276 atomic_inc(&id_priv
->refcount
);
3277 queue_work(cma_wq
, &work
->work
);
3283 static int cma_netdev_callback(struct notifier_block
*self
, unsigned long event
,
3286 struct net_device
*ndev
= (struct net_device
*)ctx
;
3287 struct cma_device
*cma_dev
;
3288 struct rdma_id_private
*id_priv
;
3289 int ret
= NOTIFY_DONE
;
3291 if (dev_net(ndev
) != &init_net
)
3294 if (event
!= NETDEV_BONDING_FAILOVER
)
3297 if (!(ndev
->flags
& IFF_MASTER
) || !(ndev
->priv_flags
& IFF_BONDING
))
3301 list_for_each_entry(cma_dev
, &dev_list
, list
)
3302 list_for_each_entry(id_priv
, &cma_dev
->id_list
, list
) {
3303 ret
= cma_netdev_change(ndev
, id_priv
);
3309 mutex_unlock(&lock
);
3313 static struct notifier_block cma_nb
= {
3314 .notifier_call
= cma_netdev_callback
3317 static void cma_add_one(struct ib_device
*device
)
3319 struct cma_device
*cma_dev
;
3320 struct rdma_id_private
*id_priv
;
3322 cma_dev
= kmalloc(sizeof *cma_dev
, GFP_KERNEL
);
3326 cma_dev
->device
= device
;
3328 init_completion(&cma_dev
->comp
);
3329 atomic_set(&cma_dev
->refcount
, 1);
3330 INIT_LIST_HEAD(&cma_dev
->id_list
);
3331 ib_set_client_data(device
, &cma_client
, cma_dev
);
3334 list_add_tail(&cma_dev
->list
, &dev_list
);
3335 list_for_each_entry(id_priv
, &listen_any_list
, list
)
3336 cma_listen_on_dev(id_priv
, cma_dev
);
3337 mutex_unlock(&lock
);
3340 static int cma_remove_id_dev(struct rdma_id_private
*id_priv
)
3342 struct rdma_cm_event event
;
3343 enum rdma_cm_state state
;
3346 /* Record that we want to remove the device */
3347 state
= cma_exch(id_priv
, RDMA_CM_DEVICE_REMOVAL
);
3348 if (state
== RDMA_CM_DESTROYING
)
3351 cma_cancel_operation(id_priv
, state
);
3352 mutex_lock(&id_priv
->handler_mutex
);
3354 /* Check for destruction from another callback. */
3355 if (!cma_comp(id_priv
, RDMA_CM_DEVICE_REMOVAL
))
3358 memset(&event
, 0, sizeof event
);
3359 event
.event
= RDMA_CM_EVENT_DEVICE_REMOVAL
;
3360 ret
= id_priv
->id
.event_handler(&id_priv
->id
, &event
);
3362 mutex_unlock(&id_priv
->handler_mutex
);
3366 static void cma_process_remove(struct cma_device
*cma_dev
)
3368 struct rdma_id_private
*id_priv
;
3372 while (!list_empty(&cma_dev
->id_list
)) {
3373 id_priv
= list_entry(cma_dev
->id_list
.next
,
3374 struct rdma_id_private
, list
);
3376 list_del(&id_priv
->listen_list
);
3377 list_del_init(&id_priv
->list
);
3378 atomic_inc(&id_priv
->refcount
);
3379 mutex_unlock(&lock
);
3381 ret
= id_priv
->internal_id
? 1 : cma_remove_id_dev(id_priv
);
3382 cma_deref_id(id_priv
);
3384 rdma_destroy_id(&id_priv
->id
);
3388 mutex_unlock(&lock
);
3390 cma_deref_dev(cma_dev
);
3391 wait_for_completion(&cma_dev
->comp
);
3394 static void cma_remove_one(struct ib_device
*device
)
3396 struct cma_device
*cma_dev
;
3398 cma_dev
= ib_get_client_data(device
, &cma_client
);
3403 list_del(&cma_dev
->list
);
3404 mutex_unlock(&lock
);
3406 cma_process_remove(cma_dev
);
3410 static int cma_get_id_stats(struct sk_buff
*skb
, struct netlink_callback
*cb
)
3412 struct nlmsghdr
*nlh
;
3413 struct rdma_cm_id_stats
*id_stats
;
3414 struct rdma_id_private
*id_priv
;
3415 struct rdma_cm_id
*id
= NULL
;
3416 struct cma_device
*cma_dev
;
3417 int i_dev
= 0, i_id
= 0;
3420 * We export all of the IDs as a sequence of messages. Each
3421 * ID gets its own netlink message.
3425 list_for_each_entry(cma_dev
, &dev_list
, list
) {
3426 if (i_dev
< cb
->args
[0]) {
3432 list_for_each_entry(id_priv
, &cma_dev
->id_list
, list
) {
3433 if (i_id
< cb
->args
[1]) {
3438 id_stats
= ibnl_put_msg(skb
, &nlh
, cb
->nlh
->nlmsg_seq
,
3439 sizeof *id_stats
, RDMA_NL_RDMA_CM
,
3440 RDMA_NL_RDMA_CM_ID_STATS
);
3444 memset(id_stats
, 0, sizeof *id_stats
);
3446 id_stats
->node_type
= id
->route
.addr
.dev_addr
.dev_type
;
3447 id_stats
->port_num
= id
->port_num
;
3448 id_stats
->bound_dev_if
=
3449 id
->route
.addr
.dev_addr
.bound_dev_if
;
3451 if (id
->route
.addr
.src_addr
.ss_family
== AF_INET
) {
3452 if (ibnl_put_attr(skb
, nlh
,
3453 sizeof(struct sockaddr_in
),
3454 &id
->route
.addr
.src_addr
,
3455 RDMA_NL_RDMA_CM_ATTR_SRC_ADDR
)) {
3458 if (ibnl_put_attr(skb
, nlh
,
3459 sizeof(struct sockaddr_in
),
3460 &id
->route
.addr
.dst_addr
,
3461 RDMA_NL_RDMA_CM_ATTR_DST_ADDR
)) {
3464 } else if (id
->route
.addr
.src_addr
.ss_family
== AF_INET6
) {
3465 if (ibnl_put_attr(skb
, nlh
,
3466 sizeof(struct sockaddr_in6
),
3467 &id
->route
.addr
.src_addr
,
3468 RDMA_NL_RDMA_CM_ATTR_SRC_ADDR
)) {
3471 if (ibnl_put_attr(skb
, nlh
,
3472 sizeof(struct sockaddr_in6
),
3473 &id
->route
.addr
.dst_addr
,
3474 RDMA_NL_RDMA_CM_ATTR_DST_ADDR
)) {
3479 id_stats
->pid
= id_priv
->owner
;
3480 id_stats
->port_space
= id
->ps
;
3481 id_stats
->cm_state
= id_priv
->state
;
3482 id_stats
->qp_num
= id_priv
->qp_num
;
3483 id_stats
->qp_type
= id
->qp_type
;
3493 mutex_unlock(&lock
);
3494 cb
->args
[0] = i_dev
;
3500 static const struct ibnl_client_cbs cma_cb_table
[] = {
3501 [RDMA_NL_RDMA_CM_ID_STATS
] = { .dump
= cma_get_id_stats
,
3502 .module
= THIS_MODULE
},
3505 static int __init
cma_init(void)
3509 cma_wq
= create_singlethread_workqueue("rdma_cm");
3513 ib_sa_register_client(&sa_client
);
3514 rdma_addr_register_client(&addr_client
);
3515 register_netdevice_notifier(&cma_nb
);
3517 ret
= ib_register_client(&cma_client
);
3521 if (ibnl_add_client(RDMA_NL_RDMA_CM
, RDMA_NL_RDMA_CM_NUM_OPS
, cma_cb_table
))
3522 printk(KERN_WARNING
"RDMA CMA: failed to add netlink callback\n");
3527 unregister_netdevice_notifier(&cma_nb
);
3528 rdma_addr_unregister_client(&addr_client
);
3529 ib_sa_unregister_client(&sa_client
);
3530 destroy_workqueue(cma_wq
);
3534 static void __exit
cma_cleanup(void)
3536 ibnl_remove_client(RDMA_NL_RDMA_CM
);
3537 ib_unregister_client(&cma_client
);
3538 unregister_netdevice_notifier(&cma_nb
);
3539 rdma_addr_unregister_client(&addr_client
);
3540 ib_sa_unregister_client(&sa_client
);
3541 destroy_workqueue(cma_wq
);
3542 idr_destroy(&sdp_ps
);
3543 idr_destroy(&tcp_ps
);
3544 idr_destroy(&udp_ps
);
3545 idr_destroy(&ipoib_ps
);
3546 idr_destroy(&ib_ps
);
3549 module_init(cma_init
);
3550 module_exit(cma_cleanup
);