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 #define A2MP_FEAT_EXT 0x8000
24 /* Global AMP Manager list */
25 LIST_HEAD(amp_mgr_list);
26 DEFINE_MUTEX(amp_mgr_list_lock);
28 /* A2MP build & send command helper functions */
29 static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
34 plen = sizeof(*cmd) + len;
35 cmd = kzalloc(plen, GFP_KERNEL);
41 cmd->len = cpu_to_le16(len);
43 memcpy(cmd->data, data, len);
48 void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data)
50 struct l2cap_chan *chan = mgr->a2mp_chan;
52 u16 total_len = len + sizeof(*cmd);
56 cmd = __a2mp_build(code, ident, len, data);
61 iv.iov_len = total_len;
63 memset(&msg, 0, sizeof(msg));
65 iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &iv, 1, total_len);
67 l2cap_chan_send(chan, &msg, total_len);
72 u8 __next_ident(struct amp_mgr *mgr)
74 if (++mgr->ident == 0)
80 /* hci_dev_list shall be locked */
81 static void __a2mp_add_cl(struct amp_mgr *mgr, struct a2mp_cl *cl)
86 cl[0].id = AMP_ID_BREDR;
87 cl[0].type = AMP_TYPE_BREDR;
88 cl[0].status = AMP_STATUS_BLUETOOTH_ONLY;
90 list_for_each_entry(hdev, &hci_dev_list, list) {
91 if (hdev->dev_type == HCI_AMP) {
93 cl[i].type = hdev->amp_type;
94 if (test_bit(HCI_UP, &hdev->flags))
95 cl[i].status = hdev->amp_status;
97 cl[i].status = AMP_STATUS_POWERED_DOWN;
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 = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
169 __a2mp_add_cl(mgr, rsp->cl);
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 != AMP_TYPE_BREDR) {
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->scid == L2CAP_CID_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,
542 &mgr->l2cap_conn->hcon->dst);
544 BT_ERR("No phys link exist");
545 rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS;
549 /* TODO Disconnect Phys Link here */
555 a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp);
557 skb_pull(skb, sizeof(*req));
561 static inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
562 struct a2mp_cmd *hdr)
564 BT_DBG("ident %d code 0x%2.2x", hdr->ident, hdr->code);
566 skb_pull(skb, le16_to_cpu(hdr->len));
570 /* Handle A2MP signalling */
571 static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
573 struct a2mp_cmd *hdr;
574 struct amp_mgr *mgr = chan->data;
579 while (skb->len >= sizeof(*hdr)) {
582 hdr = (void *) skb->data;
583 len = le16_to_cpu(hdr->len);
585 BT_DBG("code 0x%2.2x id %d len %u", hdr->code, hdr->ident, len);
587 skb_pull(skb, sizeof(*hdr));
589 if (len > skb->len || !hdr->ident) {
594 mgr->ident = hdr->ident;
597 case A2MP_COMMAND_REJ:
598 a2mp_command_rej(mgr, skb, hdr);
601 case A2MP_DISCOVER_REQ:
602 err = a2mp_discover_req(mgr, skb, hdr);
605 case A2MP_CHANGE_NOTIFY:
606 err = a2mp_change_notify(mgr, skb, hdr);
609 case A2MP_GETINFO_REQ:
610 err = a2mp_getinfo_req(mgr, skb, hdr);
613 case A2MP_GETAMPASSOC_REQ:
614 err = a2mp_getampassoc_req(mgr, skb, hdr);
617 case A2MP_CREATEPHYSLINK_REQ:
618 err = a2mp_createphyslink_req(mgr, skb, hdr);
621 case A2MP_DISCONNPHYSLINK_REQ:
622 err = a2mp_discphyslink_req(mgr, skb, hdr);
625 case A2MP_DISCOVER_RSP:
626 err = a2mp_discover_rsp(mgr, skb, hdr);
629 case A2MP_GETINFO_RSP:
630 err = a2mp_getinfo_rsp(mgr, skb, hdr);
633 case A2MP_GETAMPASSOC_RSP:
634 err = a2mp_getampassoc_rsp(mgr, skb, hdr);
637 case A2MP_CHANGE_RSP:
638 case A2MP_CREATEPHYSLINK_RSP:
639 case A2MP_DISCONNPHYSLINK_RSP:
640 err = a2mp_cmd_rsp(mgr, skb, hdr);
644 BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code);
651 struct a2mp_cmd_rej rej;
653 rej.reason = cpu_to_le16(0);
654 hdr = (void *) skb->data;
656 BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err);
658 a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej),
662 /* Always free skb and return success error code to prevent
663 from sending L2CAP Disconnect over A2MP channel */
671 static void a2mp_chan_close_cb(struct l2cap_chan *chan)
673 l2cap_chan_put(chan);
676 static void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state,
679 struct amp_mgr *mgr = chan->data;
684 BT_DBG("chan %p state %s", chan, state_to_string(state));
696 static struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan,
697 unsigned long hdr_len,
698 unsigned long len, int nb)
702 skb = bt_skb_alloc(hdr_len + len, GFP_KERNEL);
704 return ERR_PTR(-ENOMEM);
709 static const struct l2cap_ops a2mp_chan_ops = {
710 .name = "L2CAP A2MP channel",
711 .recv = a2mp_chan_recv_cb,
712 .close = a2mp_chan_close_cb,
713 .state_change = a2mp_chan_state_change_cb,
714 .alloc_skb = a2mp_chan_alloc_skb_cb,
716 /* Not implemented for A2MP */
717 .new_connection = l2cap_chan_no_new_connection,
718 .teardown = l2cap_chan_no_teardown,
719 .ready = l2cap_chan_no_ready,
720 .defer = l2cap_chan_no_defer,
721 .resume = l2cap_chan_no_resume,
722 .set_shutdown = l2cap_chan_no_set_shutdown,
723 .get_sndtimeo = l2cap_chan_no_get_sndtimeo,
726 static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
728 struct l2cap_chan *chan;
731 chan = l2cap_chan_create();
735 BT_DBG("chan %p", chan);
737 chan->chan_type = L2CAP_CHAN_FIXED;
738 chan->scid = L2CAP_CID_A2MP;
739 chan->dcid = L2CAP_CID_A2MP;
740 chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
741 chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
742 chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
744 chan->ops = &a2mp_chan_ops;
746 l2cap_chan_set_defaults(chan);
747 chan->remote_max_tx = chan->max_tx;
748 chan->remote_tx_win = chan->tx_win;
750 chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
751 chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
753 skb_queue_head_init(&chan->tx_q);
755 chan->mode = L2CAP_MODE_ERTM;
757 err = l2cap_ertm_init(chan);
759 l2cap_chan_del(chan, 0);
763 chan->conf_state = 0;
766 __l2cap_chan_add(conn, chan);
768 l2cap_chan_add(conn, chan);
770 chan->remote_mps = chan->omtu;
771 chan->mps = chan->omtu;
773 chan->state = BT_CONNECTED;
778 /* AMP Manager functions */
779 struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr)
781 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
783 kref_get(&mgr->kref);
788 static void amp_mgr_destroy(struct kref *kref)
790 struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref);
792 BT_DBG("mgr %p", mgr);
794 mutex_lock(&_mgr_list_lock);
795 list_del(&mgr->list);
796 mutex_unlock(&_mgr_list_lock);
798 amp_ctrl_list_flush(mgr);
802 int amp_mgr_put(struct amp_mgr *mgr)
804 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
806 return kref_put(&mgr->kref, &_mgr_destroy);
809 static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked)
812 struct l2cap_chan *chan;
814 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
818 BT_DBG("conn %p mgr %p", conn, mgr);
820 mgr->l2cap_conn = conn;
822 chan = a2mp_chan_open(conn, locked);
828 mgr->a2mp_chan = chan;
831 conn->hcon->amp_mgr = mgr;
833 kref_init(&mgr->kref);
835 /* Remote AMP ctrl list initialization */
836 INIT_LIST_HEAD(&mgr->amp_ctrls);
837 mutex_init(&mgr->amp_ctrls_lock);
839 mutex_lock(&_mgr_list_lock);
840 list_add(&mgr->list, &_mgr_list);
841 mutex_unlock(&_mgr_list_lock);
846 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
851 if (conn->hcon->type != ACL_LINK)
854 mgr = amp_mgr_create(conn, false);
856 BT_ERR("Could not create AMP manager");
860 BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan);
862 return mgr->a2mp_chan;
865 struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
869 mutex_lock(&_mgr_list_lock);
870 list_for_each_entry(mgr, &_mgr_list, list) {
871 if (test_and_clear_bit(state, &mgr->state)) {
873 mutex_unlock(&_mgr_list_lock);
877 mutex_unlock(&_mgr_list_lock);
882 void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
885 struct a2mp_info_rsp rsp;
887 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO);
891 BT_DBG("%s mgr %p", hdev->name, mgr);
894 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
896 if (hdev->amp_type != AMP_TYPE_BREDR) {
898 rsp.total_bw = cpu_to_le32(hdev->amp_total_bw);
899 rsp.max_bw = cpu_to_le32(hdev->amp_max_bw);
900 rsp.min_latency = cpu_to_le32(hdev->amp_min_latency);
901 rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap);
902 rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size);
905 a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp);
909 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status)
912 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
913 struct a2mp_amp_assoc_rsp *rsp;
916 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
920 BT_DBG("%s mgr %p", hdev->name, mgr);
922 len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
923 rsp = kzalloc(len, GFP_KERNEL);
932 rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
934 rsp->status = A2MP_STATUS_SUCCESS;
935 memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
938 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
943 void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status)
946 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
947 struct a2mp_physlink_req *req;
948 struct l2cap_chan *bredr_chan;
951 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL);
955 len = sizeof(*req) + loc_assoc->len;
957 BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len);
959 req = kzalloc(len, GFP_KERNEL);
965 bredr_chan = mgr->bredr_chan;
969 req->local_id = hdev->id;
970 req->remote_id = bredr_chan->remote_amp_id;
971 memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len);
973 a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req);
980 void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
983 struct a2mp_physlink_rsp rsp;
984 struct hci_conn *hs_hcon;
986 mgr = amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC);
990 hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
992 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
994 rsp.remote_id = hs_hcon->remote_id;
995 rsp.status = A2MP_STATUS_SUCCESS;
998 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev->name, mgr, hs_hcon,
1001 rsp.local_id = hdev->id;
1002 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, mgr->ident, sizeof(rsp), &rsp);
1006 void a2mp_discover_amp(struct l2cap_chan *chan)
1008 struct l2cap_conn *conn = chan->conn;
1009 struct amp_mgr *mgr = conn->hcon->amp_mgr;
1010 struct a2mp_discov_req req;
1012 BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr);
1015 mgr = amp_mgr_create(conn, true);
1020 mgr->bredr_chan = chan;
1022 req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
1024 a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);