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 static inline void __a2mp_cl_bredr(struct a2mp_cl
*cl
)
85 /* hci_dev_list shall be locked */
86 static void __a2mp_add_cl(struct amp_mgr
*mgr
, struct a2mp_cl
*cl
, u8 num_ctrl
)
93 list_for_each_entry(hdev
, &hci_dev_list
, list
) {
94 /* Iterate through AMP controllers */
95 if (hdev
->id
== HCI_BREDR_ID
)
98 /* Starting from second entry */
103 cl
[i
].type
= hdev
->amp_type
;
104 cl
[i
].status
= hdev
->amp_status
;
108 /* Processing A2MP messages */
109 static int a2mp_command_rej(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
110 struct a2mp_cmd
*hdr
)
112 struct a2mp_cmd_rej
*rej
= (void *) skb
->data
;
114 if (le16_to_cpu(hdr
->len
) < sizeof(*rej
))
117 BT_DBG("ident %d reason %d", hdr
->ident
, le16_to_cpu(rej
->reason
));
119 skb_pull(skb
, sizeof(*rej
));
124 static int a2mp_discover_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
125 struct a2mp_cmd
*hdr
)
127 struct a2mp_discov_req
*req
= (void *) skb
->data
;
128 u16 len
= le16_to_cpu(hdr
->len
);
129 struct a2mp_discov_rsp
*rsp
;
133 if (len
< sizeof(*req
))
136 skb_pull(skb
, sizeof(*req
));
138 ext_feat
= le16_to_cpu(req
->ext_feat
);
140 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req
->mtu
), ext_feat
);
142 /* check that packet is not broken for now */
143 while (ext_feat
& A2MP_FEAT_EXT
) {
144 if (len
< sizeof(ext_feat
))
147 ext_feat
= get_unaligned_le16(skb
->data
);
148 BT_DBG("efm 0x%4.4x", ext_feat
);
149 len
-= sizeof(ext_feat
);
150 skb_pull(skb
, sizeof(ext_feat
));
153 read_lock(&hci_dev_list_lock
);
155 num_ctrl
= __hci_num_ctrl();
156 len
= num_ctrl
* sizeof(struct a2mp_cl
) + sizeof(*rsp
);
157 rsp
= kmalloc(len
, GFP_ATOMIC
);
159 read_unlock(&hci_dev_list_lock
);
163 rsp
->mtu
= __constant_cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU
);
166 __a2mp_add_cl(mgr
, rsp
->cl
, num_ctrl
);
168 read_unlock(&hci_dev_list_lock
);
170 a2mp_send(mgr
, A2MP_DISCOVER_RSP
, hdr
->ident
, len
, rsp
);
176 static int a2mp_discover_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
177 struct a2mp_cmd
*hdr
)
179 struct a2mp_discov_rsp
*rsp
= (void *) skb
->data
;
180 u16 len
= le16_to_cpu(hdr
->len
);
185 if (len
< sizeof(*rsp
))
189 skb_pull(skb
, sizeof(*rsp
));
191 ext_feat
= le16_to_cpu(rsp
->ext_feat
);
193 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp
->mtu
), ext_feat
);
195 /* check that packet is not broken for now */
196 while (ext_feat
& A2MP_FEAT_EXT
) {
197 if (len
< sizeof(ext_feat
))
200 ext_feat
= get_unaligned_le16(skb
->data
);
201 BT_DBG("efm 0x%4.4x", ext_feat
);
202 len
-= sizeof(ext_feat
);
203 skb_pull(skb
, sizeof(ext_feat
));
206 cl
= (void *) skb
->data
;
207 while (len
>= sizeof(*cl
)) {
208 BT_DBG("Remote AMP id %d type %d status %d", cl
->id
, cl
->type
,
211 if (cl
->id
!= HCI_BREDR_ID
&& cl
->type
== HCI_AMP
) {
212 struct a2mp_info_req req
;
216 a2mp_send(mgr
, A2MP_GETINFO_REQ
, __next_ident(mgr
),
221 cl
= (void *) skb_pull(skb
, sizeof(*cl
));
224 /* Fall back to L2CAP init sequence */
226 struct l2cap_conn
*conn
= mgr
->l2cap_conn
;
227 struct l2cap_chan
*chan
;
229 mutex_lock(&conn
->chan_lock
);
231 list_for_each_entry(chan
, &conn
->chan_l
, list
) {
233 BT_DBG("chan %p state %s", chan
,
234 state_to_string(chan
->state
));
236 if (chan
->chan_type
== L2CAP_CHAN_CONN_FIX_A2MP
)
239 l2cap_chan_lock(chan
);
241 if (chan
->state
== BT_CONNECT
)
242 l2cap_send_conn_req(chan
);
244 l2cap_chan_unlock(chan
);
247 mutex_unlock(&conn
->chan_lock
);
253 static int a2mp_change_notify(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
254 struct a2mp_cmd
*hdr
)
256 struct a2mp_cl
*cl
= (void *) skb
->data
;
258 while (skb
->len
>= sizeof(*cl
)) {
259 BT_DBG("Controller id %d type %d status %d", cl
->id
, cl
->type
,
261 cl
= (struct a2mp_cl
*) skb_pull(skb
, sizeof(*cl
));
264 /* TODO send A2MP_CHANGE_RSP */
269 static int a2mp_getinfo_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
270 struct a2mp_cmd
*hdr
)
272 struct a2mp_info_req
*req
= (void *) skb
->data
;
273 struct hci_dev
*hdev
;
275 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
278 BT_DBG("id %d", req
->id
);
280 hdev
= hci_dev_get(req
->id
);
281 if (!hdev
|| hdev
->dev_type
!= HCI_AMP
) {
282 struct a2mp_info_rsp rsp
;
285 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
287 a2mp_send(mgr
, A2MP_GETINFO_RSP
, hdr
->ident
, sizeof(rsp
),
293 set_bit(READ_LOC_AMP_INFO
, &mgr
->state
);
294 hci_send_cmd(hdev
, HCI_OP_READ_LOCAL_AMP_INFO
, 0, NULL
);
300 skb_pull(skb
, sizeof(*req
));
304 static int a2mp_getinfo_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
305 struct a2mp_cmd
*hdr
)
307 struct a2mp_info_rsp
*rsp
= (struct a2mp_info_rsp
*) skb
->data
;
308 struct a2mp_amp_assoc_req req
;
309 struct amp_ctrl
*ctrl
;
311 if (le16_to_cpu(hdr
->len
) < sizeof(*rsp
))
314 BT_DBG("id %d status 0x%2.2x", rsp
->id
, rsp
->status
);
319 ctrl
= amp_ctrl_add(mgr
, rsp
->id
);
324 a2mp_send(mgr
, A2MP_GETAMPASSOC_REQ
, __next_ident(mgr
), sizeof(req
),
327 skb_pull(skb
, sizeof(*rsp
));
331 static int a2mp_getampassoc_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
332 struct a2mp_cmd
*hdr
)
334 struct a2mp_amp_assoc_req
*req
= (void *) skb
->data
;
335 struct hci_dev
*hdev
;
338 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
341 BT_DBG("id %d", req
->id
);
343 /* Make sure that other request is not processed */
344 tmp
= amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC
);
346 hdev
= hci_dev_get(req
->id
);
347 if (!hdev
|| hdev
->amp_type
== HCI_BREDR
|| tmp
) {
348 struct a2mp_amp_assoc_rsp rsp
;
352 rsp
.status
= A2MP_STATUS_COLLISION_OCCURED
;
355 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
358 a2mp_send(mgr
, A2MP_GETAMPASSOC_RSP
, hdr
->ident
, sizeof(rsp
),
364 amp_read_loc_assoc(hdev
, mgr
);
370 skb_pull(skb
, sizeof(*req
));
374 static int a2mp_getampassoc_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
375 struct a2mp_cmd
*hdr
)
377 struct a2mp_amp_assoc_rsp
*rsp
= (void *) skb
->data
;
378 u16 len
= le16_to_cpu(hdr
->len
);
379 struct hci_dev
*hdev
;
380 struct amp_ctrl
*ctrl
;
381 struct hci_conn
*hcon
;
384 if (len
< sizeof(*rsp
))
387 assoc_len
= len
- sizeof(*rsp
);
389 BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp
->id
, rsp
->status
,
395 /* Save remote ASSOC data */
396 ctrl
= amp_ctrl_lookup(mgr
, rsp
->id
);
400 assoc
= kzalloc(assoc_len
, GFP_KERNEL
);
406 memcpy(assoc
, rsp
->amp_assoc
, assoc_len
);
408 ctrl
->assoc_len
= assoc_len
;
409 ctrl
->assoc_rem_len
= assoc_len
;
410 ctrl
->assoc_len_so_far
= 0;
415 /* Create Phys Link */
416 hdev
= hci_dev_get(rsp
->id
);
420 hcon
= phylink_add(hdev
, mgr
, rsp
->id
, true);
424 BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon
, hdev
->id
, rsp
->id
);
426 mgr
->bredr_chan
->remote_amp_id
= rsp
->id
;
428 amp_create_phylink(hdev
, mgr
, hcon
);
436 static int a2mp_createphyslink_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
437 struct a2mp_cmd
*hdr
)
439 struct a2mp_physlink_req
*req
= (void *) skb
->data
;
441 struct a2mp_physlink_rsp rsp
;
442 struct hci_dev
*hdev
;
443 struct hci_conn
*hcon
;
444 struct amp_ctrl
*ctrl
;
446 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
449 BT_DBG("local_id %d, remote_id %d", req
->local_id
, req
->remote_id
);
451 rsp
.local_id
= req
->remote_id
;
452 rsp
.remote_id
= req
->local_id
;
454 hdev
= hci_dev_get(req
->remote_id
);
455 if (!hdev
|| hdev
->amp_type
!= HCI_AMP
) {
456 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
460 ctrl
= amp_ctrl_lookup(mgr
, rsp
.remote_id
);
462 ctrl
= amp_ctrl_add(mgr
, rsp
.remote_id
);
466 rsp
.status
= A2MP_STATUS_UNABLE_START_LINK_CREATION
;
472 size_t assoc_len
= le16_to_cpu(hdr
->len
) - sizeof(*req
);
475 assoc
= kzalloc(assoc_len
, GFP_KERNEL
);
481 memcpy(assoc
, req
->amp_assoc
, assoc_len
);
483 ctrl
->assoc_len
= assoc_len
;
484 ctrl
->assoc_rem_len
= assoc_len
;
485 ctrl
->assoc_len_so_far
= 0;
490 hcon
= phylink_add(hdev
, mgr
, req
->local_id
, false);
492 amp_accept_phylink(hdev
, mgr
, hcon
);
493 rsp
.status
= A2MP_STATUS_SUCCESS
;
495 rsp
.status
= A2MP_STATUS_UNABLE_START_LINK_CREATION
;
502 /* Reply error now and success after HCI Write Remote AMP Assoc
503 command complete with success status
505 if (rsp
.status
!= A2MP_STATUS_SUCCESS
) {
506 a2mp_send(mgr
, A2MP_CREATEPHYSLINK_RSP
, hdr
->ident
,
509 set_bit(WRITE_REMOTE_AMP_ASSOC
, &mgr
->state
);
510 mgr
->ident
= hdr
->ident
;
513 skb_pull(skb
, le16_to_cpu(hdr
->len
));
517 static int a2mp_discphyslink_req(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
518 struct a2mp_cmd
*hdr
)
520 struct a2mp_physlink_req
*req
= (void *) skb
->data
;
521 struct a2mp_physlink_rsp rsp
;
522 struct hci_dev
*hdev
;
523 struct hci_conn
*hcon
;
525 if (le16_to_cpu(hdr
->len
) < sizeof(*req
))
528 BT_DBG("local_id %d remote_id %d", req
->local_id
, req
->remote_id
);
530 rsp
.local_id
= req
->remote_id
;
531 rsp
.remote_id
= req
->local_id
;
532 rsp
.status
= A2MP_STATUS_SUCCESS
;
534 hdev
= hci_dev_get(req
->remote_id
);
536 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
540 hcon
= hci_conn_hash_lookup_ba(hdev
, AMP_LINK
, mgr
->l2cap_conn
->dst
);
542 BT_ERR("No phys link exist");
543 rsp
.status
= A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS
;
547 /* TODO Disconnect Phys Link here */
553 a2mp_send(mgr
, A2MP_DISCONNPHYSLINK_RSP
, hdr
->ident
, sizeof(rsp
), &rsp
);
555 skb_pull(skb
, sizeof(*req
));
559 static inline int a2mp_cmd_rsp(struct amp_mgr
*mgr
, struct sk_buff
*skb
,
560 struct a2mp_cmd
*hdr
)
562 BT_DBG("ident %d code 0x%2.2x", hdr
->ident
, hdr
->code
);
564 skb_pull(skb
, le16_to_cpu(hdr
->len
));
568 /* Handle A2MP signalling */
569 static int a2mp_chan_recv_cb(struct l2cap_chan
*chan
, struct sk_buff
*skb
)
571 struct a2mp_cmd
*hdr
;
572 struct amp_mgr
*mgr
= chan
->data
;
577 while (skb
->len
>= sizeof(*hdr
)) {
580 hdr
= (void *) skb
->data
;
581 len
= le16_to_cpu(hdr
->len
);
583 BT_DBG("code 0x%2.2x id %d len %u", hdr
->code
, hdr
->ident
, len
);
585 skb_pull(skb
, sizeof(*hdr
));
587 if (len
> skb
->len
|| !hdr
->ident
) {
592 mgr
->ident
= hdr
->ident
;
595 case A2MP_COMMAND_REJ
:
596 a2mp_command_rej(mgr
, skb
, hdr
);
599 case A2MP_DISCOVER_REQ
:
600 err
= a2mp_discover_req(mgr
, skb
, hdr
);
603 case A2MP_CHANGE_NOTIFY
:
604 err
= a2mp_change_notify(mgr
, skb
, hdr
);
607 case A2MP_GETINFO_REQ
:
608 err
= a2mp_getinfo_req(mgr
, skb
, hdr
);
611 case A2MP_GETAMPASSOC_REQ
:
612 err
= a2mp_getampassoc_req(mgr
, skb
, hdr
);
615 case A2MP_CREATEPHYSLINK_REQ
:
616 err
= a2mp_createphyslink_req(mgr
, skb
, hdr
);
619 case A2MP_DISCONNPHYSLINK_REQ
:
620 err
= a2mp_discphyslink_req(mgr
, skb
, hdr
);
623 case A2MP_DISCOVER_RSP
:
624 err
= a2mp_discover_rsp(mgr
, skb
, hdr
);
627 case A2MP_GETINFO_RSP
:
628 err
= a2mp_getinfo_rsp(mgr
, skb
, hdr
);
631 case A2MP_GETAMPASSOC_RSP
:
632 err
= a2mp_getampassoc_rsp(mgr
, skb
, hdr
);
635 case A2MP_CHANGE_RSP
:
636 case A2MP_CREATEPHYSLINK_RSP
:
637 case A2MP_DISCONNPHYSLINK_RSP
:
638 err
= a2mp_cmd_rsp(mgr
, skb
, hdr
);
642 BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr
->code
);
649 struct a2mp_cmd_rej rej
;
651 rej
.reason
= __constant_cpu_to_le16(0);
652 hdr
= (void *) skb
->data
;
654 BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr
->code
, err
);
656 a2mp_send(mgr
, A2MP_COMMAND_REJ
, hdr
->ident
, sizeof(rej
),
660 /* Always free skb and return success error code to prevent
661 from sending L2CAP Disconnect over A2MP channel */
669 static void a2mp_chan_close_cb(struct l2cap_chan
*chan
)
671 l2cap_chan_put(chan
);
674 static void a2mp_chan_state_change_cb(struct l2cap_chan
*chan
, int state
)
676 struct amp_mgr
*mgr
= chan
->data
;
681 BT_DBG("chan %p state %s", chan
, state_to_string(state
));
693 static struct sk_buff
*a2mp_chan_alloc_skb_cb(struct l2cap_chan
*chan
,
694 unsigned long len
, int nb
)
696 return bt_skb_alloc(len
, GFP_KERNEL
);
699 static struct l2cap_ops a2mp_chan_ops
= {
700 .name
= "L2CAP A2MP channel",
701 .recv
= a2mp_chan_recv_cb
,
702 .close
= a2mp_chan_close_cb
,
703 .state_change
= a2mp_chan_state_change_cb
,
704 .alloc_skb
= a2mp_chan_alloc_skb_cb
,
706 /* Not implemented for A2MP */
707 .new_connection
= l2cap_chan_no_new_connection
,
708 .teardown
= l2cap_chan_no_teardown
,
709 .ready
= l2cap_chan_no_ready
,
710 .defer
= l2cap_chan_no_defer
,
713 static struct l2cap_chan
*a2mp_chan_open(struct l2cap_conn
*conn
, bool locked
)
715 struct l2cap_chan
*chan
;
718 chan
= l2cap_chan_create();
722 BT_DBG("chan %p", chan
);
724 chan
->chan_type
= L2CAP_CHAN_CONN_FIX_A2MP
;
725 chan
->flush_to
= L2CAP_DEFAULT_FLUSH_TO
;
727 chan
->ops
= &a2mp_chan_ops
;
729 l2cap_chan_set_defaults(chan
);
730 chan
->remote_max_tx
= chan
->max_tx
;
731 chan
->remote_tx_win
= chan
->tx_win
;
733 chan
->retrans_timeout
= L2CAP_DEFAULT_RETRANS_TO
;
734 chan
->monitor_timeout
= L2CAP_DEFAULT_MONITOR_TO
;
736 skb_queue_head_init(&chan
->tx_q
);
738 chan
->mode
= L2CAP_MODE_ERTM
;
740 err
= l2cap_ertm_init(chan
);
742 l2cap_chan_del(chan
, 0);
746 chan
->conf_state
= 0;
749 __l2cap_chan_add(conn
, chan
);
751 l2cap_chan_add(conn
, chan
);
753 chan
->remote_mps
= chan
->omtu
;
754 chan
->mps
= chan
->omtu
;
756 chan
->state
= BT_CONNECTED
;
761 /* AMP Manager functions */
762 struct amp_mgr
*amp_mgr_get(struct amp_mgr
*mgr
)
764 BT_DBG("mgr %p orig refcnt %d", mgr
, atomic_read(&mgr
->kref
.refcount
));
766 kref_get(&mgr
->kref
);
771 static void amp_mgr_destroy(struct kref
*kref
)
773 struct amp_mgr
*mgr
= container_of(kref
, struct amp_mgr
, kref
);
775 BT_DBG("mgr %p", mgr
);
777 mutex_lock(&_mgr_list_lock
);
778 list_del(&mgr
->list
);
779 mutex_unlock(&_mgr_list_lock
);
781 amp_ctrl_list_flush(mgr
);
785 int amp_mgr_put(struct amp_mgr
*mgr
)
787 BT_DBG("mgr %p orig refcnt %d", mgr
, atomic_read(&mgr
->kref
.refcount
));
789 return kref_put(&mgr
->kref
, &_mgr_destroy
);
792 static struct amp_mgr
*amp_mgr_create(struct l2cap_conn
*conn
, bool locked
)
795 struct l2cap_chan
*chan
;
797 mgr
= kzalloc(sizeof(*mgr
), GFP_KERNEL
);
801 BT_DBG("conn %p mgr %p", conn
, mgr
);
803 mgr
->l2cap_conn
= conn
;
805 chan
= a2mp_chan_open(conn
, locked
);
811 mgr
->a2mp_chan
= chan
;
814 conn
->hcon
->amp_mgr
= mgr
;
816 kref_init(&mgr
->kref
);
818 /* Remote AMP ctrl list initialization */
819 INIT_LIST_HEAD(&mgr
->amp_ctrls
);
820 mutex_init(&mgr
->amp_ctrls_lock
);
822 mutex_lock(&_mgr_list_lock
);
823 list_add(&mgr
->list
, &_mgr_list
);
824 mutex_unlock(&_mgr_list_lock
);
829 struct l2cap_chan
*a2mp_channel_create(struct l2cap_conn
*conn
,
834 mgr
= amp_mgr_create(conn
, false);
836 BT_ERR("Could not create AMP manager");
840 BT_DBG("mgr: %p chan %p", mgr
, mgr
->a2mp_chan
);
842 return mgr
->a2mp_chan
;
845 struct amp_mgr
*amp_mgr_lookup_by_state(u8 state
)
849 mutex_lock(&_mgr_list_lock
);
850 list_for_each_entry(mgr
, &_mgr_list
, list
) {
851 if (test_and_clear_bit(state
, &mgr
->state
)) {
853 mutex_unlock(&_mgr_list_lock
);
857 mutex_unlock(&_mgr_list_lock
);
862 void a2mp_send_getinfo_rsp(struct hci_dev
*hdev
)
865 struct a2mp_info_rsp rsp
;
867 mgr
= amp_mgr_lookup_by_state(READ_LOC_AMP_INFO
);
871 BT_DBG("%s mgr %p", hdev
->name
, mgr
);
874 rsp
.status
= A2MP_STATUS_INVALID_CTRL_ID
;
876 if (hdev
->amp_type
!= HCI_BREDR
) {
878 rsp
.total_bw
= cpu_to_le32(hdev
->amp_total_bw
);
879 rsp
.max_bw
= cpu_to_le32(hdev
->amp_max_bw
);
880 rsp
.min_latency
= cpu_to_le32(hdev
->amp_min_latency
);
881 rsp
.pal_cap
= cpu_to_le16(hdev
->amp_pal_cap
);
882 rsp
.assoc_size
= cpu_to_le16(hdev
->amp_assoc_size
);
885 a2mp_send(mgr
, A2MP_GETINFO_RSP
, mgr
->ident
, sizeof(rsp
), &rsp
);
889 void a2mp_send_getampassoc_rsp(struct hci_dev
*hdev
, u8 status
)
892 struct amp_assoc
*loc_assoc
= &hdev
->loc_assoc
;
893 struct a2mp_amp_assoc_rsp
*rsp
;
896 mgr
= amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC
);
900 BT_DBG("%s mgr %p", hdev
->name
, mgr
);
902 len
= sizeof(struct a2mp_amp_assoc_rsp
) + loc_assoc
->len
;
903 rsp
= kzalloc(len
, GFP_KERNEL
);
912 rsp
->status
= A2MP_STATUS_INVALID_CTRL_ID
;
914 rsp
->status
= A2MP_STATUS_SUCCESS
;
915 memcpy(rsp
->amp_assoc
, loc_assoc
->data
, loc_assoc
->len
);
918 a2mp_send(mgr
, A2MP_GETAMPASSOC_RSP
, mgr
->ident
, len
, rsp
);
923 void a2mp_send_create_phy_link_req(struct hci_dev
*hdev
, u8 status
)
926 struct amp_assoc
*loc_assoc
= &hdev
->loc_assoc
;
927 struct a2mp_physlink_req
*req
;
928 struct l2cap_chan
*bredr_chan
;
931 mgr
= amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL
);
935 len
= sizeof(*req
) + loc_assoc
->len
;
937 BT_DBG("%s mgr %p assoc_len %zu", hdev
->name
, mgr
, len
);
939 req
= kzalloc(len
, GFP_KERNEL
);
945 bredr_chan
= mgr
->bredr_chan
;
949 req
->local_id
= hdev
->id
;
950 req
->remote_id
= bredr_chan
->remote_amp_id
;
951 memcpy(req
->amp_assoc
, loc_assoc
->data
, loc_assoc
->len
);
953 a2mp_send(mgr
, A2MP_CREATEPHYSLINK_REQ
, __next_ident(mgr
), len
, req
);
960 void a2mp_send_create_phy_link_rsp(struct hci_dev
*hdev
, u8 status
)
963 struct a2mp_physlink_rsp rsp
;
964 struct hci_conn
*hs_hcon
;
966 mgr
= amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC
);
970 hs_hcon
= hci_conn_hash_lookup_state(hdev
, AMP_LINK
, BT_CONNECT
);
972 rsp
.status
= A2MP_STATUS_UNABLE_START_LINK_CREATION
;
974 rsp
.remote_id
= hs_hcon
->remote_id
;
975 rsp
.status
= A2MP_STATUS_SUCCESS
;
978 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev
->name
, mgr
, hs_hcon
,
981 rsp
.local_id
= hdev
->id
;
982 a2mp_send(mgr
, A2MP_CREATEPHYSLINK_RSP
, mgr
->ident
, sizeof(rsp
), &rsp
);
986 void a2mp_discover_amp(struct l2cap_chan
*chan
)
988 struct l2cap_conn
*conn
= chan
->conn
;
989 struct amp_mgr
*mgr
= conn
->hcon
->amp_mgr
;
990 struct a2mp_discov_req req
;
992 BT_DBG("chan %p conn %p mgr %p", chan
, conn
, mgr
);
995 mgr
= amp_mgr_create(conn
, true);
1000 mgr
->bredr_chan
= chan
;
1002 req
.mtu
= cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU
);
1004 a2mp_send(mgr
, A2MP_DISCOVER_REQ
, 1, sizeof(req
), &req
);