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>
22 /* Global AMP Manager list */
23 LIST_HEAD(amp_mgr_list);
24 DEFINE_MUTEX(amp_mgr_list_lock);
26 /* A2MP build & send command helper functions */
27 static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
32 plen = sizeof(*cmd) + len;
33 cmd = kzalloc(plen, GFP_KERNEL);
39 cmd->len = cpu_to_le16(len);
41 memcpy(cmd->data, data, len);
46 void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data)
48 struct l2cap_chan *chan = mgr->a2mp_chan;
50 u16 total_len = len + sizeof(*cmd);
54 cmd = __a2mp_build(code, ident, len, data);
59 iv.iov_len = total_len;
61 memset(&msg, 0, sizeof(msg));
63 msg.msg_iov = (struct iovec *) &iv;
66 l2cap_chan_send(chan, &msg, total_len, 0);
71 u8 __next_ident(struct amp_mgr *mgr)
73 if (++mgr->ident == 0)
79 /* hci_dev_list shall be locked */
80 static void __a2mp_add_cl(struct amp_mgr *mgr, struct a2mp_cl *cl)
85 cl[0].id = AMP_ID_BREDR;
86 cl[0].type = AMP_TYPE_BREDR;
87 cl[0].status = AMP_STATUS_BLUETOOTH_ONLY;
89 list_for_each_entry(hdev, &hci_dev_list, list) {
90 if (hdev->dev_type == HCI_AMP) {
92 cl[i].type = hdev->amp_type;
93 if (test_bit(HCI_UP, &hdev->flags))
94 cl[i].status = hdev->amp_status;
96 cl[i].status = AMP_STATUS_POWERED_DOWN;
102 /* Processing A2MP messages */
103 static int a2mp_command_rej(struct amp_mgr *mgr, struct sk_buff *skb,
104 struct a2mp_cmd *hdr)
106 struct a2mp_cmd_rej *rej = (void *) skb->data;
108 if (le16_to_cpu(hdr->len) < sizeof(*rej))
111 BT_DBG("ident %d reason %d", hdr->ident, le16_to_cpu(rej->reason));
113 skb_pull(skb, sizeof(*rej));
118 static int a2mp_discover_req(struct amp_mgr *mgr, struct sk_buff *skb,
119 struct a2mp_cmd *hdr)
121 struct a2mp_discov_req *req = (void *) skb->data;
122 u16 len = le16_to_cpu(hdr->len);
123 struct a2mp_discov_rsp *rsp;
126 struct hci_dev *hdev;
128 if (len < sizeof(*req))
131 skb_pull(skb, sizeof(*req));
133 ext_feat = le16_to_cpu(req->ext_feat);
135 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req->mtu), ext_feat);
137 /* check that packet is not broken for now */
138 while (ext_feat & A2MP_FEAT_EXT) {
139 if (len < sizeof(ext_feat))
142 ext_feat = get_unaligned_le16(skb->data);
143 BT_DBG("efm 0x%4.4x", ext_feat);
144 len -= sizeof(ext_feat);
145 skb_pull(skb, sizeof(ext_feat));
148 read_lock(&hci_dev_list_lock);
150 /* at minimum the BR/EDR needs to be listed */
153 list_for_each_entry(hdev, &hci_dev_list, list) {
154 if (hdev->dev_type == HCI_AMP)
158 len = num_ctrl * sizeof(struct a2mp_cl) + sizeof(*rsp);
159 rsp = kmalloc(len, GFP_ATOMIC);
161 read_unlock(&hci_dev_list_lock);
165 rsp->mtu = __constant_cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
168 __a2mp_add_cl(mgr, rsp->cl);
170 read_unlock(&hci_dev_list_lock);
172 a2mp_send(mgr, A2MP_DISCOVER_RSP, hdr->ident, len, rsp);
178 static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
179 struct a2mp_cmd *hdr)
181 struct a2mp_discov_rsp *rsp = (void *) skb->data;
182 u16 len = le16_to_cpu(hdr->len);
187 if (len < sizeof(*rsp))
191 skb_pull(skb, sizeof(*rsp));
193 ext_feat = le16_to_cpu(rsp->ext_feat);
195 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat);
197 /* check that packet is not broken for now */
198 while (ext_feat & A2MP_FEAT_EXT) {
199 if (len < sizeof(ext_feat))
202 ext_feat = get_unaligned_le16(skb->data);
203 BT_DBG("efm 0x%4.4x", ext_feat);
204 len -= sizeof(ext_feat);
205 skb_pull(skb, sizeof(ext_feat));
208 cl = (void *) skb->data;
209 while (len >= sizeof(*cl)) {
210 BT_DBG("Remote AMP id %d type %d status %d", cl->id, cl->type,
213 if (cl->id != AMP_ID_BREDR && cl->type != AMP_TYPE_BREDR) {
214 struct a2mp_info_req req;
218 a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr),
223 cl = (void *) skb_pull(skb, sizeof(*cl));
226 /* Fall back to L2CAP init sequence */
228 struct l2cap_conn *conn = mgr->l2cap_conn;
229 struct l2cap_chan *chan;
231 mutex_lock(&conn->chan_lock);
233 list_for_each_entry(chan, &conn->chan_l, list) {
235 BT_DBG("chan %p state %s", chan,
236 state_to_string(chan->state));
238 if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP)
241 l2cap_chan_lock(chan);
243 if (chan->state == BT_CONNECT)
244 l2cap_send_conn_req(chan);
246 l2cap_chan_unlock(chan);
249 mutex_unlock(&conn->chan_lock);
255 static int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb,
256 struct a2mp_cmd *hdr)
258 struct a2mp_cl *cl = (void *) skb->data;
260 while (skb->len >= sizeof(*cl)) {
261 BT_DBG("Controller id %d type %d status %d", cl->id, cl->type,
263 cl = (struct a2mp_cl *) skb_pull(skb, sizeof(*cl));
266 /* TODO send A2MP_CHANGE_RSP */
271 static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
272 struct a2mp_cmd *hdr)
274 struct a2mp_info_req *req = (void *) skb->data;
275 struct hci_dev *hdev;
277 if (le16_to_cpu(hdr->len) < sizeof(*req))
280 BT_DBG("id %d", req->id);
282 hdev = hci_dev_get(req->id);
283 if (!hdev || hdev->dev_type != HCI_AMP) {
284 struct a2mp_info_rsp rsp;
287 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
289 a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp),
295 set_bit(READ_LOC_AMP_INFO, &mgr->state);
296 hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
302 skb_pull(skb, sizeof(*req));
306 static int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
307 struct a2mp_cmd *hdr)
309 struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data;
310 struct a2mp_amp_assoc_req req;
311 struct amp_ctrl *ctrl;
313 if (le16_to_cpu(hdr->len) < sizeof(*rsp))
316 BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status);
321 ctrl = amp_ctrl_add(mgr, rsp->id);
326 a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req),
329 skb_pull(skb, sizeof(*rsp));
333 static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb,
334 struct a2mp_cmd *hdr)
336 struct a2mp_amp_assoc_req *req = (void *) skb->data;
337 struct hci_dev *hdev;
340 if (le16_to_cpu(hdr->len) < sizeof(*req))
343 BT_DBG("id %d", req->id);
345 /* Make sure that other request is not processed */
346 tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
348 hdev = hci_dev_get(req->id);
349 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR || tmp) {
350 struct a2mp_amp_assoc_rsp rsp;
354 rsp.status = A2MP_STATUS_COLLISION_OCCURED;
357 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
360 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp),
366 amp_read_loc_assoc(hdev, mgr);
372 skb_pull(skb, sizeof(*req));
376 static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
377 struct a2mp_cmd *hdr)
379 struct a2mp_amp_assoc_rsp *rsp = (void *) skb->data;
380 u16 len = le16_to_cpu(hdr->len);
381 struct hci_dev *hdev;
382 struct amp_ctrl *ctrl;
383 struct hci_conn *hcon;
386 if (len < sizeof(*rsp))
389 assoc_len = len - sizeof(*rsp);
391 BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp->id, rsp->status,
397 /* Save remote ASSOC data */
398 ctrl = amp_ctrl_lookup(mgr, rsp->id);
402 assoc = kmemdup(rsp->amp_assoc, assoc_len, GFP_KERNEL);
409 ctrl->assoc_len = assoc_len;
410 ctrl->assoc_rem_len = assoc_len;
411 ctrl->assoc_len_so_far = 0;
416 /* Create Phys Link */
417 hdev = hci_dev_get(rsp->id);
421 hcon = phylink_add(hdev, mgr, rsp->id, true);
425 BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon, hdev->id, rsp->id);
427 mgr->bredr_chan->remote_amp_id = rsp->id;
429 amp_create_phylink(hdev, mgr, hcon);
437 static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
438 struct a2mp_cmd *hdr)
440 struct a2mp_physlink_req *req = (void *) skb->data;
442 struct a2mp_physlink_rsp rsp;
443 struct hci_dev *hdev;
444 struct hci_conn *hcon;
445 struct amp_ctrl *ctrl;
447 if (le16_to_cpu(hdr->len) < sizeof(*req))
450 BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id);
452 rsp.local_id = req->remote_id;
453 rsp.remote_id = req->local_id;
455 hdev = hci_dev_get(req->remote_id);
456 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR) {
457 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
461 ctrl = amp_ctrl_lookup(mgr, rsp.remote_id);
463 ctrl = amp_ctrl_add(mgr, rsp.remote_id);
467 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
473 size_t assoc_len = le16_to_cpu(hdr->len) - sizeof(*req);
476 assoc = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL);
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,
541 &mgr->l2cap_conn->hcon->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,
678 struct amp_mgr *mgr = chan->data;
683 BT_DBG("chan %p state %s", chan, state_to_string(state));
695 static struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan,
696 unsigned long len, int nb)
698 return bt_skb_alloc(len, GFP_KERNEL);
701 static struct l2cap_ops a2mp_chan_ops = {
702 .name = "L2CAP A2MP channel",
703 .recv = a2mp_chan_recv_cb,
704 .close = a2mp_chan_close_cb,
705 .state_change = a2mp_chan_state_change_cb,
706 .alloc_skb = a2mp_chan_alloc_skb_cb,
708 /* Not implemented for A2MP */
709 .new_connection = l2cap_chan_no_new_connection,
710 .teardown = l2cap_chan_no_teardown,
711 .ready = l2cap_chan_no_ready,
712 .defer = l2cap_chan_no_defer,
713 .resume = l2cap_chan_no_resume,
714 .set_shutdown = l2cap_chan_no_set_shutdown,
715 .get_sndtimeo = l2cap_chan_no_get_sndtimeo,
718 static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
720 struct l2cap_chan *chan;
723 chan = l2cap_chan_create();
727 BT_DBG("chan %p", chan);
729 chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP;
730 chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
732 chan->ops = &a2mp_chan_ops;
734 l2cap_chan_set_defaults(chan);
735 chan->remote_max_tx = chan->max_tx;
736 chan->remote_tx_win = chan->tx_win;
738 chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
739 chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
741 skb_queue_head_init(&chan->tx_q);
743 chan->mode = L2CAP_MODE_ERTM;
745 err = l2cap_ertm_init(chan);
747 l2cap_chan_del(chan, 0);
751 chan->conf_state = 0;
754 __l2cap_chan_add(conn, chan);
756 l2cap_chan_add(conn, chan);
758 chan->remote_mps = chan->omtu;
759 chan->mps = chan->omtu;
761 chan->state = BT_CONNECTED;
766 /* AMP Manager functions */
767 struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr)
769 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
771 kref_get(&mgr->kref);
776 static void amp_mgr_destroy(struct kref *kref)
778 struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref);
780 BT_DBG("mgr %p", mgr);
782 mutex_lock(&_mgr_list_lock);
783 list_del(&mgr->list);
784 mutex_unlock(&_mgr_list_lock);
786 amp_ctrl_list_flush(mgr);
790 int amp_mgr_put(struct amp_mgr *mgr)
792 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
794 return kref_put(&mgr->kref, &_mgr_destroy);
797 static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked)
800 struct l2cap_chan *chan;
802 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
806 BT_DBG("conn %p mgr %p", conn, mgr);
808 mgr->l2cap_conn = conn;
810 chan = a2mp_chan_open(conn, locked);
816 mgr->a2mp_chan = chan;
819 conn->hcon->amp_mgr = mgr;
821 kref_init(&mgr->kref);
823 /* Remote AMP ctrl list initialization */
824 INIT_LIST_HEAD(&mgr->amp_ctrls);
825 mutex_init(&mgr->amp_ctrls_lock);
827 mutex_lock(&_mgr_list_lock);
828 list_add(&mgr->list, &_mgr_list);
829 mutex_unlock(&_mgr_list_lock);
834 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
839 if (conn->hcon->type != ACL_LINK)
842 mgr = amp_mgr_create(conn, false);
844 BT_ERR("Could not create AMP manager");
848 BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan);
850 return mgr->a2mp_chan;
853 struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
857 mutex_lock(&_mgr_list_lock);
858 list_for_each_entry(mgr, &_mgr_list, list) {
859 if (test_and_clear_bit(state, &mgr->state)) {
861 mutex_unlock(&_mgr_list_lock);
865 mutex_unlock(&_mgr_list_lock);
870 void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
873 struct a2mp_info_rsp rsp;
875 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO);
879 BT_DBG("%s mgr %p", hdev->name, mgr);
882 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
884 if (hdev->amp_type != AMP_TYPE_BREDR) {
886 rsp.total_bw = cpu_to_le32(hdev->amp_total_bw);
887 rsp.max_bw = cpu_to_le32(hdev->amp_max_bw);
888 rsp.min_latency = cpu_to_le32(hdev->amp_min_latency);
889 rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap);
890 rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size);
893 a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp);
897 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status)
900 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
901 struct a2mp_amp_assoc_rsp *rsp;
904 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
908 BT_DBG("%s mgr %p", hdev->name, mgr);
910 len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
911 rsp = kzalloc(len, GFP_KERNEL);
920 rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
922 rsp->status = A2MP_STATUS_SUCCESS;
923 memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
926 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
931 void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status)
934 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
935 struct a2mp_physlink_req *req;
936 struct l2cap_chan *bredr_chan;
939 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL);
943 len = sizeof(*req) + loc_assoc->len;
945 BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len);
947 req = kzalloc(len, GFP_KERNEL);
953 bredr_chan = mgr->bredr_chan;
957 req->local_id = hdev->id;
958 req->remote_id = bredr_chan->remote_amp_id;
959 memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len);
961 a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req);
968 void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
971 struct a2mp_physlink_rsp rsp;
972 struct hci_conn *hs_hcon;
974 mgr = amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC);
978 hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
980 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
982 rsp.remote_id = hs_hcon->remote_id;
983 rsp.status = A2MP_STATUS_SUCCESS;
986 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev->name, mgr, hs_hcon,
989 rsp.local_id = hdev->id;
990 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, mgr->ident, sizeof(rsp), &rsp);
994 void a2mp_discover_amp(struct l2cap_chan *chan)
996 struct l2cap_conn *conn = chan->conn;
997 struct amp_mgr *mgr = conn->hcon->amp_mgr;
998 struct a2mp_discov_req req;
1000 BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr);
1003 mgr = amp_mgr_create(conn, true);
1008 mgr->bredr_chan = chan;
1010 req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
1012 a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);