2 Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved.
3 Copyright (c) 2011,2012 Intel Corp.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License version 2 and
7 only version 2 as published by the Free Software Foundation.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
15 #include <net/bluetooth/bluetooth.h>
16 #include <net/bluetooth/hci_core.h>
17 #include <net/bluetooth/l2cap.h>
18 #include <net/bluetooth/a2mp.h>
19 #include <net/bluetooth/amp.h>
21 /* Global AMP Manager list */
22 LIST_HEAD(amp_mgr_list
);
23 DEFINE_MUTEX(amp_mgr_list_lock
);
25 /* A2MP build & send command helper functions */
26 static struct a2mp_cmd
*__a2mp_build(u8 code
, u8 ident
, u16 len
, void *data
)
31 plen
= sizeof(*cmd
) + len
;
32 cmd
= kzalloc(plen
, GFP_KERNEL
);
38 cmd
->len
= cpu_to_le16(len
);
40 memcpy(cmd
->data
, data
, len
);
45 void a2mp_send(struct amp_mgr
*mgr
, u8 code
, u8 ident
, u16 len
, void *data
)
47 struct l2cap_chan
*chan
= mgr
->a2mp_chan
;
49 u16 total_len
= len
+ sizeof(*cmd
);
53 cmd
= __a2mp_build(code
, ident
, len
, data
);
58 iv
.iov_len
= total_len
;
60 memset(&msg
, 0, sizeof(msg
));
62 msg
.msg_iov
= (struct iovec
*) &iv
;
65 l2cap_chan_send(chan
, &msg
, total_len
, 0);
70 u8
__next_ident(struct amp_mgr
*mgr
)
72 if (++mgr
->ident
== 0)
78 /* hci_dev_list shall be locked */
79 static void __a2mp_add_cl(struct amp_mgr
*mgr
, struct a2mp_cl
*cl
, u8 num_ctrl
)
84 cl
[0].id
= AMP_ID_BREDR
;
85 cl
[0].type
= AMP_TYPE_BREDR
;
86 cl
[0].status
= AMP_STATUS_BLUETOOTH_ONLY
;
88 list_for_each_entry(hdev
, &hci_dev_list
, list
) {
89 /* Iterate through AMP controllers */
90 if (hdev
->dev_type
!= HCI_AMP
)
93 /* Starting from second entry */
98 cl
[i
].type
= hdev
->amp_type
;
99 cl
[i
].status
= hdev
->amp_status
;
103 /* Processing A2MP messages */
104 static int a2mp_command_rej(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
105 struct a2mp_cmd
*hdr
)
107 struct a2mp_cmd_rej
*rej
= (void *) skb
->data
;
109 if (le16_to_cpu(hdr
->len
) < sizeof(*rej
))
112 BT_DBG("ident %d reason %d", hdr
->ident
, le16_to_cpu(rej
->reason
));
114 skb_pull(skb
, sizeof(*rej
));
119 static int a2mp_discover_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
120 struct a2mp_cmd
*hdr
)
122 struct a2mp_discov_req
*req
= (void *) skb
->data
;
123 u16 len
= le16_to_cpu(hdr
->len
);
124 struct a2mp_discov_rsp
*rsp
;
127 struct hci_dev
*hdev
;
129 if (len
< sizeof(*req
))
132 skb_pull(skb
, sizeof(*req
));
134 ext_feat
= le16_to_cpu(req
->ext_feat
);
136 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req
->mtu
), ext_feat
);
138 /* check that packet is not broken for now */
139 while (ext_feat
& A2MP_FEAT_EXT
) {
140 if (len
< sizeof(ext_feat
))
143 ext_feat
= get_unaligned_le16(skb
->data
);
144 BT_DBG("efm 0x%4.4x", ext_feat
);
145 len
-= sizeof(ext_feat
);
146 skb_pull(skb
, sizeof(ext_feat
));
149 read_lock(&hci_dev_list_lock
);
151 /* at minimum the BR/EDR needs to be listed */
154 list_for_each_entry(hdev
, &hci_dev_list
, list
) {
155 if (hdev
->dev_type
== HCI_AMP
)
159 len
= num_ctrl
* sizeof(struct a2mp_cl
) + sizeof(*rsp
);
160 rsp
= kmalloc(len
, GFP_ATOMIC
);
162 read_unlock(&hci_dev_list_lock
);
166 rsp
->mtu
= __constant_cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU
);
169 __a2mp_add_cl(mgr
, rsp
->cl
, num_ctrl
);
171 read_unlock(&hci_dev_list_lock
);
173 a2mp_send(mgr
, A2MP_DISCOVER_RSP
, hdr
->ident
, len
, rsp
);
179 static int a2mp_discover_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
180 struct a2mp_cmd
*hdr
)
182 struct a2mp_discov_rsp
*rsp
= (void *) skb
->data
;
183 u16 len
= le16_to_cpu(hdr
->len
);
188 if (len
< sizeof(*rsp
))
192 skb_pull(skb
, sizeof(*rsp
));
194 ext_feat
= le16_to_cpu(rsp
->ext_feat
);
196 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp
->mtu
), ext_feat
);
198 /* check that packet is not broken for now */
199 while (ext_feat
& A2MP_FEAT_EXT
) {
200 if (len
< sizeof(ext_feat
))
203 ext_feat
= get_unaligned_le16(skb
->data
);
204 BT_DBG("efm 0x%4.4x", ext_feat
);
205 len
-= sizeof(ext_feat
);
206 skb_pull(skb
, sizeof(ext_feat
));
209 cl
= (void *) skb
->data
;
210 while (len
>= sizeof(*cl
)) {
211 BT_DBG("Remote AMP id %d type %d status %d", cl
->id
, cl
->type
,
214 if (cl
->id
!= AMP_ID_BREDR
&& cl
->type
== HCI_AMP
) {
215 struct a2mp_info_req req
;
219 a2mp_send(mgr
, A2MP_GETINFO_REQ
, __next_ident(mgr
),
224 cl
= (void *) skb_pull(skb
, sizeof(*cl
));
227 /* Fall back to L2CAP init sequence */
229 struct l2cap_conn
*conn
= mgr
->l2cap_conn
;
230 struct l2cap_chan
*chan
;
232 mutex_lock(&conn
->chan_lock
);
234 list_for_each_entry(chan
, &conn
->chan_l
, list
) {
236 BT_DBG("chan %p state %s", chan
,
237 state_to_string(chan
->state
));
239 if (chan
->chan_type
== L2CAP_CHAN_CONN_FIX_A2MP
)
242 l2cap_chan_lock(chan
);
244 if (chan
->state
== BT_CONNECT
)
245 l2cap_send_conn_req(chan
);
247 l2cap_chan_unlock(chan
);
250 mutex_unlock(&conn
->chan_lock
);
256 static int a2mp_change_notify(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
257 struct a2mp_cmd
*hdr
)
259 struct a2mp_cl
*cl
= (void *) skb
->data
;
261 while (skb
->len
>= sizeof(*cl
)) {
262 BT_DBG("Controller id %d type %d status %d", cl
->id
, cl
->type
,
264 cl
= (struct a2mp_cl
*) skb_pull(skb
, sizeof(*cl
));
267 /* TODO send A2MP_CHANGE_RSP */
272 static int a2mp_getinfo_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
273 struct a2mp_cmd
*hdr
)
275 struct a2mp_info_req
*req
= (void *) skb
->data
;
276 struct hci_dev
*hdev
;
278 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
281 BT_DBG("id %d", req
->id
);
283 hdev
= hci_dev_get(req
->id
);
284 if (!hdev
|| hdev
->dev_type
!= HCI_AMP
) {
285 struct a2mp_info_rsp rsp
;
288 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
290 a2mp_send(mgr
, A2MP_GETINFO_RSP
, hdr
->ident
, sizeof(rsp
),
296 set_bit(READ_LOC_AMP_INFO
, &mgr
->state
);
297 hci_send_cmd(hdev
, HCI_OP_READ_LOCAL_AMP_INFO
, 0, NULL
);
303 skb_pull(skb
, sizeof(*req
));
307 static int a2mp_getinfo_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
308 struct a2mp_cmd
*hdr
)
310 struct a2mp_info_rsp
*rsp
= (struct a2mp_info_rsp
*) skb
->data
;
311 struct a2mp_amp_assoc_req req
;
312 struct amp_ctrl
*ctrl
;
314 if (le16_to_cpu(hdr
->len
) < sizeof(*rsp
))
317 BT_DBG("id %d status 0x%2.2x", rsp
->id
, rsp
->status
);
322 ctrl
= amp_ctrl_add(mgr
, rsp
->id
);
327 a2mp_send(mgr
, A2MP_GETAMPASSOC_REQ
, __next_ident(mgr
), sizeof(req
),
330 skb_pull(skb
, sizeof(*rsp
));
334 static int a2mp_getampassoc_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
335 struct a2mp_cmd
*hdr
)
337 struct a2mp_amp_assoc_req
*req
= (void *) skb
->data
;
338 struct hci_dev
*hdev
;
341 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
344 BT_DBG("id %d", req
->id
);
346 /* Make sure that other request is not processed */
347 tmp
= amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC
);
349 hdev
= hci_dev_get(req
->id
);
350 if (!hdev
|| hdev
->amp_type
== AMP_TYPE_BREDR
|| tmp
) {
351 struct a2mp_amp_assoc_rsp rsp
;
355 rsp
.status
= A2MP_STATUS_COLLISION_OCCURED
;
358 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
361 a2mp_send(mgr
, A2MP_GETAMPASSOC_RSP
, hdr
->ident
, sizeof(rsp
),
367 amp_read_loc_assoc(hdev
, mgr
);
373 skb_pull(skb
, sizeof(*req
));
377 static int a2mp_getampassoc_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
378 struct a2mp_cmd
*hdr
)
380 struct a2mp_amp_assoc_rsp
*rsp
= (void *) skb
->data
;
381 u16 len
= le16_to_cpu(hdr
->len
);
382 struct hci_dev
*hdev
;
383 struct amp_ctrl
*ctrl
;
384 struct hci_conn
*hcon
;
387 if (len
< sizeof(*rsp
))
390 assoc_len
= len
- sizeof(*rsp
);
392 BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp
->id
, rsp
->status
,
398 /* Save remote ASSOC data */
399 ctrl
= amp_ctrl_lookup(mgr
, rsp
->id
);
403 assoc
= kmemdup(rsp
->amp_assoc
, assoc_len
, GFP_KERNEL
);
410 ctrl
->assoc_len
= assoc_len
;
411 ctrl
->assoc_rem_len
= assoc_len
;
412 ctrl
->assoc_len_so_far
= 0;
417 /* Create Phys Link */
418 hdev
= hci_dev_get(rsp
->id
);
422 hcon
= phylink_add(hdev
, mgr
, rsp
->id
, true);
426 BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon
, hdev
->id
, rsp
->id
);
428 mgr
->bredr_chan
->remote_amp_id
= rsp
->id
;
430 amp_create_phylink(hdev
, mgr
, hcon
);
438 static int a2mp_createphyslink_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
439 struct a2mp_cmd
*hdr
)
441 struct a2mp_physlink_req
*req
= (void *) skb
->data
;
443 struct a2mp_physlink_rsp rsp
;
444 struct hci_dev
*hdev
;
445 struct hci_conn
*hcon
;
446 struct amp_ctrl
*ctrl
;
448 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
451 BT_DBG("local_id %d, remote_id %d", req
->local_id
, req
->remote_id
);
453 rsp
.local_id
= req
->remote_id
;
454 rsp
.remote_id
= req
->local_id
;
456 hdev
= hci_dev_get(req
->remote_id
);
457 if (!hdev
|| hdev
->amp_type
== AMP_TYPE_BREDR
) {
458 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
462 ctrl
= amp_ctrl_lookup(mgr
, rsp
.remote_id
);
464 ctrl
= amp_ctrl_add(mgr
, rsp
.remote_id
);
468 rsp
.status
= A2MP_STATUS_UNABLE_START_LINK_CREATION
;
474 size_t assoc_len
= le16_to_cpu(hdr
->len
) - sizeof(*req
);
477 assoc
= kmemdup(req
->amp_assoc
, assoc_len
, GFP_KERNEL
);
484 ctrl
->assoc_len
= assoc_len
;
485 ctrl
->assoc_rem_len
= assoc_len
;
486 ctrl
->assoc_len_so_far
= 0;
491 hcon
= phylink_add(hdev
, mgr
, req
->local_id
, false);
493 amp_accept_phylink(hdev
, mgr
, hcon
);
494 rsp
.status
= A2MP_STATUS_SUCCESS
;
496 rsp
.status
= A2MP_STATUS_UNABLE_START_LINK_CREATION
;
503 /* Reply error now and success after HCI Write Remote AMP Assoc
504 command complete with success status
506 if (rsp
.status
!= A2MP_STATUS_SUCCESS
) {
507 a2mp_send(mgr
, A2MP_CREATEPHYSLINK_RSP
, hdr
->ident
,
510 set_bit(WRITE_REMOTE_AMP_ASSOC
, &mgr
->state
);
511 mgr
->ident
= hdr
->ident
;
514 skb_pull(skb
, le16_to_cpu(hdr
->len
));
518 static int a2mp_discphyslink_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
519 struct a2mp_cmd
*hdr
)
521 struct a2mp_physlink_req
*req
= (void *) skb
->data
;
522 struct a2mp_physlink_rsp rsp
;
523 struct hci_dev
*hdev
;
524 struct hci_conn
*hcon
;
526 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
529 BT_DBG("local_id %d remote_id %d", req
->local_id
, req
->remote_id
);
531 rsp
.local_id
= req
->remote_id
;
532 rsp
.remote_id
= req
->local_id
;
533 rsp
.status
= A2MP_STATUS_SUCCESS
;
535 hdev
= hci_dev_get(req
->remote_id
);
537 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
541 hcon
= hci_conn_hash_lookup_ba(hdev
, AMP_LINK
, mgr
->l2cap_conn
->dst
);
543 BT_ERR("No phys link exist");
544 rsp
.status
= A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS
;
548 /* TODO Disconnect Phys Link here */
554 a2mp_send(mgr
, A2MP_DISCONNPHYSLINK_RSP
, hdr
->ident
, sizeof(rsp
), &rsp
);
556 skb_pull(skb
, sizeof(*req
));
560 static inline int a2mp_cmd_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
561 struct a2mp_cmd
*hdr
)
563 BT_DBG("ident %d code 0x%2.2x", hdr
->ident
, hdr
->code
);
565 skb_pull(skb
, le16_to_cpu(hdr
->len
));
569 /* Handle A2MP signalling */
570 static int a2mp_chan_recv_cb(struct l2cap_chan
*chan
, struct sk_buff
*skb
)
572 struct a2mp_cmd
*hdr
;
573 struct amp_mgr
*mgr
= chan
->data
;
578 while (skb
->len
>= sizeof(*hdr
)) {
581 hdr
= (void *) skb
->data
;
582 len
= le16_to_cpu(hdr
->len
);
584 BT_DBG("code 0x%2.2x id %d len %u", hdr
->code
, hdr
->ident
, len
);
586 skb_pull(skb
, sizeof(*hdr
));
588 if (len
> skb
->len
|| !hdr
->ident
) {
593 mgr
->ident
= hdr
->ident
;
596 case A2MP_COMMAND_REJ
:
597 a2mp_command_rej(mgr
, skb
, hdr
);
600 case A2MP_DISCOVER_REQ
:
601 err
= a2mp_discover_req(mgr
, skb
, hdr
);
604 case A2MP_CHANGE_NOTIFY
:
605 err
= a2mp_change_notify(mgr
, skb
, hdr
);
608 case A2MP_GETINFO_REQ
:
609 err
= a2mp_getinfo_req(mgr
, skb
, hdr
);
612 case A2MP_GETAMPASSOC_REQ
:
613 err
= a2mp_getampassoc_req(mgr
, skb
, hdr
);
616 case A2MP_CREATEPHYSLINK_REQ
:
617 err
= a2mp_createphyslink_req(mgr
, skb
, hdr
);
620 case A2MP_DISCONNPHYSLINK_REQ
:
621 err
= a2mp_discphyslink_req(mgr
, skb
, hdr
);
624 case A2MP_DISCOVER_RSP
:
625 err
= a2mp_discover_rsp(mgr
, skb
, hdr
);
628 case A2MP_GETINFO_RSP
:
629 err
= a2mp_getinfo_rsp(mgr
, skb
, hdr
);
632 case A2MP_GETAMPASSOC_RSP
:
633 err
= a2mp_getampassoc_rsp(mgr
, skb
, hdr
);
636 case A2MP_CHANGE_RSP
:
637 case A2MP_CREATEPHYSLINK_RSP
:
638 case A2MP_DISCONNPHYSLINK_RSP
:
639 err
= a2mp_cmd_rsp(mgr
, skb
, hdr
);
643 BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr
->code
);
650 struct a2mp_cmd_rej rej
;
652 rej
.reason
= __constant_cpu_to_le16(0);
653 hdr
= (void *) skb
->data
;
655 BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr
->code
, err
);
657 a2mp_send(mgr
, A2MP_COMMAND_REJ
, hdr
->ident
, sizeof(rej
),
661 /* Always free skb and return success error code to prevent
662 from sending L2CAP Disconnect over A2MP channel */
670 static void a2mp_chan_close_cb(struct l2cap_chan
*chan
)
672 l2cap_chan_put(chan
);
675 static void a2mp_chan_state_change_cb(struct l2cap_chan
*chan
, int state
)
677 struct amp_mgr
*mgr
= chan
->data
;
682 BT_DBG("chan %p state %s", chan
, state_to_string(state
));
694 static struct sk_buff
*a2mp_chan_alloc_skb_cb(struct l2cap_chan
*chan
,
695 unsigned long len
, int nb
)
697 return bt_skb_alloc(len
, GFP_KERNEL
);
700 static struct l2cap_ops a2mp_chan_ops
= {
701 .name
= "L2CAP A2MP channel",
702 .recv
= a2mp_chan_recv_cb
,
703 .close
= a2mp_chan_close_cb
,
704 .state_change
= a2mp_chan_state_change_cb
,
705 .alloc_skb
= a2mp_chan_alloc_skb_cb
,
707 /* Not implemented for A2MP */
708 .new_connection
= l2cap_chan_no_new_connection
,
709 .teardown
= l2cap_chan_no_teardown
,
710 .ready
= l2cap_chan_no_ready
,
711 .defer
= l2cap_chan_no_defer
,
714 static struct l2cap_chan
*a2mp_chan_open(struct l2cap_conn
*conn
, bool locked
)
716 struct l2cap_chan
*chan
;
719 chan
= l2cap_chan_create();
723 BT_DBG("chan %p", chan
);
725 chan
->chan_type
= L2CAP_CHAN_CONN_FIX_A2MP
;
726 chan
->flush_to
= L2CAP_DEFAULT_FLUSH_TO
;
728 chan
->ops
= &a2mp_chan_ops
;
730 l2cap_chan_set_defaults(chan
);
731 chan
->remote_max_tx
= chan
->max_tx
;
732 chan
->remote_tx_win
= chan
->tx_win
;
734 chan
->retrans_timeout
= L2CAP_DEFAULT_RETRANS_TO
;
735 chan
->monitor_timeout
= L2CAP_DEFAULT_MONITOR_TO
;
737 skb_queue_head_init(&chan
->tx_q
);
739 chan
->mode
= L2CAP_MODE_ERTM
;
741 err
= l2cap_ertm_init(chan
);
743 l2cap_chan_del(chan
, 0);
747 chan
->conf_state
= 0;
750 __l2cap_chan_add(conn
, chan
);
752 l2cap_chan_add(conn
, chan
);
754 chan
->remote_mps
= chan
->omtu
;
755 chan
->mps
= chan
->omtu
;
757 chan
->state
= BT_CONNECTED
;
762 /* AMP Manager functions */
763 struct amp_mgr
*amp_mgr_get(struct amp_mgr
*mgr
)
765 BT_DBG("mgr %p orig refcnt %d", mgr
, atomic_read(&mgr
->kref
.refcount
));
767 kref_get(&mgr
->kref
);
772 static void amp_mgr_destroy(struct kref
*kref
)
774 struct amp_mgr
*mgr
= container_of(kref
, struct amp_mgr
, kref
);
776 BT_DBG("mgr %p", mgr
);
778 mutex_lock(&_mgr_list_lock
);
779 list_del(&mgr
->list
);
780 mutex_unlock(&_mgr_list_lock
);
782 amp_ctrl_list_flush(mgr
);
786 int amp_mgr_put(struct amp_mgr
*mgr
)
788 BT_DBG("mgr %p orig refcnt %d", mgr
, atomic_read(&mgr
->kref
.refcount
));
790 return kref_put(&mgr
->kref
, &_mgr_destroy
);
793 static struct amp_mgr
*amp_mgr_create(struct l2cap_conn
*conn
, bool locked
)
796 struct l2cap_chan
*chan
;
798 mgr
= kzalloc(sizeof(*mgr
), GFP_KERNEL
);
802 BT_DBG("conn %p mgr %p", conn
, mgr
);
804 mgr
->l2cap_conn
= conn
;
806 chan
= a2mp_chan_open(conn
, locked
);
812 mgr
->a2mp_chan
= chan
;
815 conn
->hcon
->amp_mgr
= mgr
;
817 kref_init(&mgr
->kref
);
819 /* Remote AMP ctrl list initialization */
820 INIT_LIST_HEAD(&mgr
->amp_ctrls
);
821 mutex_init(&mgr
->amp_ctrls_lock
);
823 mutex_lock(&_mgr_list_lock
);
824 list_add(&mgr
->list
, &_mgr_list
);
825 mutex_unlock(&_mgr_list_lock
);
830 struct l2cap_chan
*a2mp_channel_create(struct l2cap_conn
*conn
,
835 mgr
= amp_mgr_create(conn
, false);
837 BT_ERR("Could not create AMP manager");
841 BT_DBG("mgr: %p chan %p", mgr
, mgr
->a2mp_chan
);
843 return mgr
->a2mp_chan
;
846 struct amp_mgr
*amp_mgr_lookup_by_state(u8 state
)
850 mutex_lock(&_mgr_list_lock
);
851 list_for_each_entry(mgr
, &_mgr_list
, list
) {
852 if (test_and_clear_bit(state
, &mgr
->state
)) {
854 mutex_unlock(&_mgr_list_lock
);
858 mutex_unlock(&_mgr_list_lock
);
863 void a2mp_send_getinfo_rsp(struct hci_dev
*hdev
)
866 struct a2mp_info_rsp rsp
;
868 mgr
= amp_mgr_lookup_by_state(READ_LOC_AMP_INFO
);
872 BT_DBG("%s mgr %p", hdev
->name
, mgr
);
875 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
877 if (hdev
->amp_type
!= AMP_TYPE_BREDR
) {
879 rsp
.total_bw
= cpu_to_le32(hdev
->amp_total_bw
);
880 rsp
.max_bw
= cpu_to_le32(hdev
->amp_max_bw
);
881 rsp
.min_latency
= cpu_to_le32(hdev
->amp_min_latency
);
882 rsp
.pal_cap
= cpu_to_le16(hdev
->amp_pal_cap
);
883 rsp
.assoc_size
= cpu_to_le16(hdev
->amp_assoc_size
);
886 a2mp_send(mgr
, A2MP_GETINFO_RSP
, mgr
->ident
, sizeof(rsp
), &rsp
);
890 void a2mp_send_getampassoc_rsp(struct hci_dev
*hdev
, u8 status
)
893 struct amp_assoc
*loc_assoc
= &hdev
->loc_assoc
;
894 struct a2mp_amp_assoc_rsp
*rsp
;
897 mgr
= amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC
);
901 BT_DBG("%s mgr %p", hdev
->name
, mgr
);
903 len
= sizeof(struct a2mp_amp_assoc_rsp
) + loc_assoc
->len
;
904 rsp
= kzalloc(len
, GFP_KERNEL
);
913 rsp
->status
= A2MP_STATUS_INVALID_CTRL_ID
;
915 rsp
->status
= A2MP_STATUS_SUCCESS
;
916 memcpy(rsp
->amp_assoc
, loc_assoc
->data
, loc_assoc
->len
);
919 a2mp_send(mgr
, A2MP_GETAMPASSOC_RSP
, mgr
->ident
, len
, rsp
);
924 void a2mp_send_create_phy_link_req(struct hci_dev
*hdev
, u8 status
)
927 struct amp_assoc
*loc_assoc
= &hdev
->loc_assoc
;
928 struct a2mp_physlink_req
*req
;
929 struct l2cap_chan
*bredr_chan
;
932 mgr
= amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL
);
936 len
= sizeof(*req
) + loc_assoc
->len
;
938 BT_DBG("%s mgr %p assoc_len %zu", hdev
->name
, mgr
, len
);
940 req
= kzalloc(len
, GFP_KERNEL
);
946 bredr_chan
= mgr
->bredr_chan
;
950 req
->local_id
= hdev
->id
;
951 req
->remote_id
= bredr_chan
->remote_amp_id
;
952 memcpy(req
->amp_assoc
, loc_assoc
->data
, loc_assoc
->len
);
954 a2mp_send(mgr
, A2MP_CREATEPHYSLINK_REQ
, __next_ident(mgr
), len
, req
);
961 void a2mp_send_create_phy_link_rsp(struct hci_dev
*hdev
, u8 status
)
964 struct a2mp_physlink_rsp rsp
;
965 struct hci_conn
*hs_hcon
;
967 mgr
= amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC
);
971 hs_hcon
= hci_conn_hash_lookup_state(hdev
, AMP_LINK
, BT_CONNECT
);
973 rsp
.status
= A2MP_STATUS_UNABLE_START_LINK_CREATION
;
975 rsp
.remote_id
= hs_hcon
->remote_id
;
976 rsp
.status
= A2MP_STATUS_SUCCESS
;
979 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev
->name
, mgr
, hs_hcon
,
982 rsp
.local_id
= hdev
->id
;
983 a2mp_send(mgr
, A2MP_CREATEPHYSLINK_RSP
, mgr
->ident
, sizeof(rsp
), &rsp
);
987 void a2mp_discover_amp(struct l2cap_chan
*chan
)
989 struct l2cap_conn
*conn
= chan
->conn
;
990 struct amp_mgr
*mgr
= conn
->hcon
->amp_mgr
;
991 struct a2mp_discov_req req
;
993 BT_DBG("chan %p conn %p mgr %p", chan
, conn
, mgr
);
996 mgr
= amp_mgr_create(conn
, true);
1001 mgr
->bredr_chan
= chan
;
1003 req
.mtu
= cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU
);
1005 a2mp_send(mgr
, A2MP_DISCOVER_REQ
, 1, sizeof(req
), &req
);