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>
19 #include "hci_request.h"
23 #define A2MP_FEAT_EXT 0x8000
25 /* Global AMP Manager list */
26 static LIST_HEAD(amp_mgr_list);
27 static DEFINE_MUTEX(amp_mgr_list_lock);
29 /* A2MP build & send command helper functions */
30 static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
35 plen = sizeof(*cmd) + len;
36 cmd = kzalloc(plen, GFP_KERNEL);
42 cmd->len = cpu_to_le16(len);
44 memcpy(cmd->data, data, len);
49 static void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data)
51 struct l2cap_chan *chan = mgr->a2mp_chan;
53 u16 total_len = len + sizeof(*cmd);
57 cmd = __a2mp_build(code, ident, len, data);
62 iv.iov_len = total_len;
64 memset(&msg, 0, sizeof(msg));
66 iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &iv, 1, total_len);
68 l2cap_chan_send(chan, &msg, total_len);
73 static u8 __next_ident(struct amp_mgr *mgr)
75 if (++mgr->ident == 0)
81 static struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
85 mutex_lock(&_mgr_list_lock);
86 list_for_each_entry(mgr, &_mgr_list, list) {
87 if (test_and_clear_bit(state, &mgr->state)) {
89 mutex_unlock(&_mgr_list_lock);
93 mutex_unlock(&_mgr_list_lock);
98 /* hci_dev_list shall be locked */
99 static void __a2mp_add_cl(struct amp_mgr *mgr, struct a2mp_cl *cl)
101 struct hci_dev *hdev;
104 cl[0].id = AMP_ID_BREDR;
105 cl[0].type = AMP_TYPE_BREDR;
106 cl[0].status = AMP_STATUS_BLUETOOTH_ONLY;
108 list_for_each_entry(hdev, &hci_dev_list, list) {
109 if (hdev->dev_type == HCI_AMP) {
111 cl[i].type = hdev->amp_type;
112 if (test_bit(HCI_UP, &hdev->flags))
113 cl[i].status = hdev->amp_status;
115 cl[i].status = AMP_STATUS_POWERED_DOWN;
121 /* Processing A2MP messages */
122 static int a2mp_command_rej(struct amp_mgr *mgr, struct sk_buff *skb,
123 struct a2mp_cmd *hdr)
125 struct a2mp_cmd_rej *rej = (void *) skb->data;
127 if (le16_to_cpu(hdr->len) < sizeof(*rej))
130 BT_DBG("ident %d reason %d", hdr->ident, le16_to_cpu(rej->reason));
132 skb_pull(skb, sizeof(*rej));
137 static int a2mp_discover_req(struct amp_mgr *mgr, struct sk_buff *skb,
138 struct a2mp_cmd *hdr)
140 struct a2mp_discov_req *req = (void *) skb->data;
141 u16 len = le16_to_cpu(hdr->len);
142 struct a2mp_discov_rsp *rsp;
145 struct hci_dev *hdev;
147 if (len < sizeof(*req))
150 skb_pull(skb, sizeof(*req));
152 ext_feat = le16_to_cpu(req->ext_feat);
154 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req->mtu), ext_feat);
156 /* check that packet is not broken for now */
157 while (ext_feat & A2MP_FEAT_EXT) {
158 if (len < sizeof(ext_feat))
161 ext_feat = get_unaligned_le16(skb->data);
162 BT_DBG("efm 0x%4.4x", ext_feat);
163 len -= sizeof(ext_feat);
164 skb_pull(skb, sizeof(ext_feat));
167 read_lock(&hci_dev_list_lock);
169 /* at minimum the BR/EDR needs to be listed */
172 list_for_each_entry(hdev, &hci_dev_list, list) {
173 if (hdev->dev_type == HCI_AMP)
177 len = num_ctrl * sizeof(struct a2mp_cl) + sizeof(*rsp);
178 rsp = kmalloc(len, GFP_ATOMIC);
180 read_unlock(&hci_dev_list_lock);
184 rsp->mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
187 __a2mp_add_cl(mgr, rsp->cl);
189 read_unlock(&hci_dev_list_lock);
191 a2mp_send(mgr, A2MP_DISCOVER_RSP, hdr->ident, len, rsp);
197 static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
198 struct a2mp_cmd *hdr)
200 struct a2mp_discov_rsp *rsp = (void *) skb->data;
201 u16 len = le16_to_cpu(hdr->len);
206 if (len < sizeof(*rsp))
210 skb_pull(skb, sizeof(*rsp));
212 ext_feat = le16_to_cpu(rsp->ext_feat);
214 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat);
216 /* check that packet is not broken for now */
217 while (ext_feat & A2MP_FEAT_EXT) {
218 if (len < sizeof(ext_feat))
221 ext_feat = get_unaligned_le16(skb->data);
222 BT_DBG("efm 0x%4.4x", ext_feat);
223 len -= sizeof(ext_feat);
224 skb_pull(skb, sizeof(ext_feat));
227 cl = (void *) skb->data;
228 while (len >= sizeof(*cl)) {
229 BT_DBG("Remote AMP id %d type %d status %d", cl->id, cl->type,
232 if (cl->id != AMP_ID_BREDR && cl->type != AMP_TYPE_BREDR) {
233 struct a2mp_info_req req;
237 a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr),
242 cl = skb_pull(skb, sizeof(*cl));
245 /* Fall back to L2CAP init sequence */
247 struct l2cap_conn *conn = mgr->l2cap_conn;
248 struct l2cap_chan *chan;
250 mutex_lock(&conn->chan_lock);
252 list_for_each_entry(chan, &conn->chan_l, list) {
254 BT_DBG("chan %p state %s", chan,
255 state_to_string(chan->state));
257 if (chan->scid == L2CAP_CID_A2MP)
260 l2cap_chan_lock(chan);
262 if (chan->state == BT_CONNECT)
263 l2cap_send_conn_req(chan);
265 l2cap_chan_unlock(chan);
268 mutex_unlock(&conn->chan_lock);
274 static int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb,
275 struct a2mp_cmd *hdr)
277 struct a2mp_cl *cl = (void *) skb->data;
279 while (skb->len >= sizeof(*cl)) {
280 BT_DBG("Controller id %d type %d status %d", cl->id, cl->type,
282 cl = skb_pull(skb, sizeof(*cl));
285 /* TODO send A2MP_CHANGE_RSP */
290 static void read_local_amp_info_complete(struct hci_dev *hdev, u8 status,
293 BT_DBG("%s status 0x%2.2x", hdev->name, status);
295 a2mp_send_getinfo_rsp(hdev);
298 static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
299 struct a2mp_cmd *hdr)
301 struct a2mp_info_req *req = (void *) skb->data;
302 struct hci_dev *hdev;
303 struct hci_request hreq;
306 if (le16_to_cpu(hdr->len) < sizeof(*req))
309 BT_DBG("id %d", req->id);
311 hdev = hci_dev_get(req->id);
312 if (!hdev || hdev->dev_type != HCI_AMP) {
313 struct a2mp_info_rsp rsp;
316 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
318 a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp),
324 set_bit(READ_LOC_AMP_INFO, &mgr->state);
325 hci_req_init(&hreq, hdev);
326 hci_req_add(&hreq, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
327 err = hci_req_run(&hreq, read_local_amp_info_complete);
329 a2mp_send_getinfo_rsp(hdev);
335 skb_pull(skb, sizeof(*req));
339 static int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
340 struct a2mp_cmd *hdr)
342 struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data;
343 struct a2mp_amp_assoc_req req;
344 struct amp_ctrl *ctrl;
346 if (le16_to_cpu(hdr->len) < sizeof(*rsp))
349 BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status);
354 ctrl = amp_ctrl_add(mgr, rsp->id);
359 a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req),
362 skb_pull(skb, sizeof(*rsp));
366 static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb,
367 struct a2mp_cmd *hdr)
369 struct a2mp_amp_assoc_req *req = (void *) skb->data;
370 struct hci_dev *hdev;
373 if (le16_to_cpu(hdr->len) < sizeof(*req))
376 BT_DBG("id %d", req->id);
378 /* Make sure that other request is not processed */
379 tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
381 hdev = hci_dev_get(req->id);
382 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR || tmp) {
383 struct a2mp_amp_assoc_rsp rsp;
387 rsp.status = A2MP_STATUS_COLLISION_OCCURED;
390 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
393 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp),
399 amp_read_loc_assoc(hdev, mgr);
405 skb_pull(skb, sizeof(*req));
409 static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
410 struct a2mp_cmd *hdr)
412 struct a2mp_amp_assoc_rsp *rsp = (void *) skb->data;
413 u16 len = le16_to_cpu(hdr->len);
414 struct hci_dev *hdev;
415 struct amp_ctrl *ctrl;
416 struct hci_conn *hcon;
419 if (len < sizeof(*rsp))
422 assoc_len = len - sizeof(*rsp);
424 BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp->id, rsp->status,
430 /* Save remote ASSOC data */
431 ctrl = amp_ctrl_lookup(mgr, rsp->id);
435 assoc = kmemdup(rsp->amp_assoc, assoc_len, GFP_KERNEL);
442 ctrl->assoc_len = assoc_len;
443 ctrl->assoc_rem_len = assoc_len;
444 ctrl->assoc_len_so_far = 0;
449 /* Create Phys Link */
450 hdev = hci_dev_get(rsp->id);
454 hcon = phylink_add(hdev, mgr, rsp->id, true);
458 BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon, hdev->id, rsp->id);
460 mgr->bredr_chan->remote_amp_id = rsp->id;
462 amp_create_phylink(hdev, mgr, hcon);
470 static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
471 struct a2mp_cmd *hdr)
473 struct a2mp_physlink_req *req = (void *) skb->data;
475 struct a2mp_physlink_rsp rsp;
476 struct hci_dev *hdev;
477 struct hci_conn *hcon;
478 struct amp_ctrl *ctrl;
480 if (le16_to_cpu(hdr->len) < sizeof(*req))
483 BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id);
485 rsp.local_id = req->remote_id;
486 rsp.remote_id = req->local_id;
488 hdev = hci_dev_get(req->remote_id);
489 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR) {
490 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
494 ctrl = amp_ctrl_lookup(mgr, rsp.remote_id);
496 ctrl = amp_ctrl_add(mgr, rsp.remote_id);
500 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
506 size_t assoc_len = le16_to_cpu(hdr->len) - sizeof(*req);
509 assoc = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL);
516 ctrl->assoc_len = assoc_len;
517 ctrl->assoc_rem_len = assoc_len;
518 ctrl->assoc_len_so_far = 0;
523 hcon = phylink_add(hdev, mgr, req->local_id, false);
525 amp_accept_phylink(hdev, mgr, hcon);
526 rsp.status = A2MP_STATUS_SUCCESS;
528 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
535 /* Reply error now and success after HCI Write Remote AMP Assoc
536 command complete with success status
538 if (rsp.status != A2MP_STATUS_SUCCESS) {
539 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident,
542 set_bit(WRITE_REMOTE_AMP_ASSOC, &mgr->state);
543 mgr->ident = hdr->ident;
546 skb_pull(skb, le16_to_cpu(hdr->len));
550 static int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
551 struct a2mp_cmd *hdr)
553 struct a2mp_physlink_req *req = (void *) skb->data;
554 struct a2mp_physlink_rsp rsp;
555 struct hci_dev *hdev;
556 struct hci_conn *hcon;
558 if (le16_to_cpu(hdr->len) < sizeof(*req))
561 BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id);
563 rsp.local_id = req->remote_id;
564 rsp.remote_id = req->local_id;
565 rsp.status = A2MP_STATUS_SUCCESS;
567 hdev = hci_dev_get(req->remote_id);
569 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
573 hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK,
574 &mgr->l2cap_conn->hcon->dst);
576 BT_ERR("No phys link exist");
577 rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS;
581 /* TODO Disconnect Phys Link here */
587 a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp);
589 skb_pull(skb, sizeof(*req));
593 static inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
594 struct a2mp_cmd *hdr)
596 BT_DBG("ident %d code 0x%2.2x", hdr->ident, hdr->code);
598 skb_pull(skb, le16_to_cpu(hdr->len));
602 /* Handle A2MP signalling */
603 static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
605 struct a2mp_cmd *hdr;
606 struct amp_mgr *mgr = chan->data;
611 while (skb->len >= sizeof(*hdr)) {
614 hdr = (void *) skb->data;
615 len = le16_to_cpu(hdr->len);
617 BT_DBG("code 0x%2.2x id %d len %u", hdr->code, hdr->ident, len);
619 skb_pull(skb, sizeof(*hdr));
621 if (len > skb->len || !hdr->ident) {
626 mgr->ident = hdr->ident;
629 case A2MP_COMMAND_REJ:
630 a2mp_command_rej(mgr, skb, hdr);
633 case A2MP_DISCOVER_REQ:
634 err = a2mp_discover_req(mgr, skb, hdr);
637 case A2MP_CHANGE_NOTIFY:
638 err = a2mp_change_notify(mgr, skb, hdr);
641 case A2MP_GETINFO_REQ:
642 err = a2mp_getinfo_req(mgr, skb, hdr);
645 case A2MP_GETAMPASSOC_REQ:
646 err = a2mp_getampassoc_req(mgr, skb, hdr);
649 case A2MP_CREATEPHYSLINK_REQ:
650 err = a2mp_createphyslink_req(mgr, skb, hdr);
653 case A2MP_DISCONNPHYSLINK_REQ:
654 err = a2mp_discphyslink_req(mgr, skb, hdr);
657 case A2MP_DISCOVER_RSP:
658 err = a2mp_discover_rsp(mgr, skb, hdr);
661 case A2MP_GETINFO_RSP:
662 err = a2mp_getinfo_rsp(mgr, skb, hdr);
665 case A2MP_GETAMPASSOC_RSP:
666 err = a2mp_getampassoc_rsp(mgr, skb, hdr);
669 case A2MP_CHANGE_RSP:
670 case A2MP_CREATEPHYSLINK_RSP:
671 case A2MP_DISCONNPHYSLINK_RSP:
672 err = a2mp_cmd_rsp(mgr, skb, hdr);
676 BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code);
683 struct a2mp_cmd_rej rej;
685 rej.reason = cpu_to_le16(0);
686 hdr = (void *) skb->data;
688 BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err);
690 a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej),
694 /* Always free skb and return success error code to prevent
695 from sending L2CAP Disconnect over A2MP channel */
703 static void a2mp_chan_close_cb(struct l2cap_chan *chan)
705 l2cap_chan_put(chan);
708 static void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state,
711 struct amp_mgr *mgr = chan->data;
716 BT_DBG("chan %p state %s", chan, state_to_string(state));
728 static struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan,
729 unsigned long hdr_len,
730 unsigned long len, int nb)
734 skb = bt_skb_alloc(hdr_len + len, GFP_KERNEL);
736 return ERR_PTR(-ENOMEM);
741 static const struct l2cap_ops a2mp_chan_ops = {
742 .name = "L2CAP A2MP channel",
743 .recv = a2mp_chan_recv_cb,
744 .close = a2mp_chan_close_cb,
745 .state_change = a2mp_chan_state_change_cb,
746 .alloc_skb = a2mp_chan_alloc_skb_cb,
748 /* Not implemented for A2MP */
749 .new_connection = l2cap_chan_no_new_connection,
750 .teardown = l2cap_chan_no_teardown,
751 .ready = l2cap_chan_no_ready,
752 .defer = l2cap_chan_no_defer,
753 .resume = l2cap_chan_no_resume,
754 .set_shutdown = l2cap_chan_no_set_shutdown,
755 .get_sndtimeo = l2cap_chan_no_get_sndtimeo,
758 static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
760 struct l2cap_chan *chan;
763 chan = l2cap_chan_create();
767 BT_DBG("chan %p", chan);
769 chan->chan_type = L2CAP_CHAN_FIXED;
770 chan->scid = L2CAP_CID_A2MP;
771 chan->dcid = L2CAP_CID_A2MP;
772 chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
773 chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
774 chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
776 chan->ops = &a2mp_chan_ops;
778 l2cap_chan_set_defaults(chan);
779 chan->remote_max_tx = chan->max_tx;
780 chan->remote_tx_win = chan->tx_win;
782 chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
783 chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
785 skb_queue_head_init(&chan->tx_q);
787 chan->mode = L2CAP_MODE_ERTM;
789 err = l2cap_ertm_init(chan);
791 l2cap_chan_del(chan, 0);
795 chan->conf_state = 0;
798 __l2cap_chan_add(conn, chan);
800 l2cap_chan_add(conn, chan);
802 chan->remote_mps = chan->omtu;
803 chan->mps = chan->omtu;
805 chan->state = BT_CONNECTED;
810 /* AMP Manager functions */
811 struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr)
813 BT_DBG("mgr %p orig refcnt %d", mgr, kref_read(&mgr->kref));
815 kref_get(&mgr->kref);
820 static void amp_mgr_destroy(struct kref *kref)
822 struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref);
824 BT_DBG("mgr %p", mgr);
826 mutex_lock(&_mgr_list_lock);
827 list_del(&mgr->list);
828 mutex_unlock(&_mgr_list_lock);
830 amp_ctrl_list_flush(mgr);
834 int amp_mgr_put(struct amp_mgr *mgr)
836 BT_DBG("mgr %p orig refcnt %d", mgr, kref_read(&mgr->kref));
838 return kref_put(&mgr->kref, &_mgr_destroy);
841 static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked)
844 struct l2cap_chan *chan;
846 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
850 BT_DBG("conn %p mgr %p", conn, mgr);
852 mgr->l2cap_conn = conn;
854 chan = a2mp_chan_open(conn, locked);
860 mgr->a2mp_chan = chan;
863 conn->hcon->amp_mgr = mgr;
865 kref_init(&mgr->kref);
867 /* Remote AMP ctrl list initialization */
868 INIT_LIST_HEAD(&mgr->amp_ctrls);
869 mutex_init(&mgr->amp_ctrls_lock);
871 mutex_lock(&_mgr_list_lock);
872 list_add(&mgr->list, &_mgr_list);
873 mutex_unlock(&_mgr_list_lock);
878 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
883 if (conn->hcon->type != ACL_LINK)
886 mgr = amp_mgr_create(conn, false);
888 BT_ERR("Could not create AMP manager");
892 BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan);
894 return mgr->a2mp_chan;
897 void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
900 struct a2mp_info_rsp rsp;
902 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO);
906 BT_DBG("%s mgr %p", hdev->name, mgr);
909 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
911 if (hdev->amp_type != AMP_TYPE_BREDR) {
913 rsp.total_bw = cpu_to_le32(hdev->amp_total_bw);
914 rsp.max_bw = cpu_to_le32(hdev->amp_max_bw);
915 rsp.min_latency = cpu_to_le32(hdev->amp_min_latency);
916 rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap);
917 rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size);
920 a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp);
924 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status)
927 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
928 struct a2mp_amp_assoc_rsp *rsp;
931 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
935 BT_DBG("%s mgr %p", hdev->name, mgr);
937 len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
938 rsp = kzalloc(len, GFP_KERNEL);
947 rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
949 rsp->status = A2MP_STATUS_SUCCESS;
950 memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
953 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
958 void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status)
961 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
962 struct a2mp_physlink_req *req;
963 struct l2cap_chan *bredr_chan;
966 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL);
970 len = sizeof(*req) + loc_assoc->len;
972 BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len);
974 req = kzalloc(len, GFP_KERNEL);
980 bredr_chan = mgr->bredr_chan;
984 req->local_id = hdev->id;
985 req->remote_id = bredr_chan->remote_amp_id;
986 memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len);
988 a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req);
995 void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
998 struct a2mp_physlink_rsp rsp;
999 struct hci_conn *hs_hcon;
1001 mgr = amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC);
1005 hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
1007 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
1009 rsp.remote_id = hs_hcon->remote_id;
1010 rsp.status = A2MP_STATUS_SUCCESS;
1013 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev->name, mgr, hs_hcon,
1016 rsp.local_id = hdev->id;
1017 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, mgr->ident, sizeof(rsp), &rsp);
1021 void a2mp_discover_amp(struct l2cap_chan *chan)
1023 struct l2cap_conn *conn = chan->conn;
1024 struct amp_mgr *mgr = conn->hcon->amp_mgr;
1025 struct a2mp_discov_req req;
1027 BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr);
1030 mgr = amp_mgr_create(conn, true);
1035 mgr->bredr_chan = chan;
1037 req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
1039 a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);