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 iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &iv, 1, total_len);
65 l2cap_chan_send(chan, &msg, total_len);
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)
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 if (hdev->dev_type == HCI_AMP) {
91 cl[i].type = hdev->amp_type;
92 if (test_bit(HCI_UP, &hdev->flags))
93 cl[i].status = hdev->amp_status;
95 cl[i].status = AMP_STATUS_POWERED_DOWN;
101 /* Processing A2MP messages */
102 static int a2mp_command_rej(struct amp_mgr *mgr, struct sk_buff *skb,
103 struct a2mp_cmd *hdr)
105 struct a2mp_cmd_rej *rej = (void *) skb->data;
107 if (le16_to_cpu(hdr->len) < sizeof(*rej))
110 BT_DBG("ident %d reason %d", hdr->ident, le16_to_cpu(rej->reason));
112 skb_pull(skb, sizeof(*rej));
117 static int a2mp_discover_req(struct amp_mgr *mgr, struct sk_buff *skb,
118 struct a2mp_cmd *hdr)
120 struct a2mp_discov_req *req = (void *) skb->data;
121 u16 len = le16_to_cpu(hdr->len);
122 struct a2mp_discov_rsp *rsp;
125 struct hci_dev *hdev;
127 if (len < sizeof(*req))
130 skb_pull(skb, sizeof(*req));
132 ext_feat = le16_to_cpu(req->ext_feat);
134 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req->mtu), ext_feat);
136 /* check that packet is not broken for now */
137 while (ext_feat & A2MP_FEAT_EXT) {
138 if (len < sizeof(ext_feat))
141 ext_feat = get_unaligned_le16(skb->data);
142 BT_DBG("efm 0x%4.4x", ext_feat);
143 len -= sizeof(ext_feat);
144 skb_pull(skb, sizeof(ext_feat));
147 read_lock(&hci_dev_list_lock);
149 /* at minimum the BR/EDR needs to be listed */
152 list_for_each_entry(hdev, &hci_dev_list, list) {
153 if (hdev->dev_type == HCI_AMP)
157 len = num_ctrl * sizeof(struct a2mp_cl) + sizeof(*rsp);
158 rsp = kmalloc(len, GFP_ATOMIC);
160 read_unlock(&hci_dev_list_lock);
164 rsp->mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
167 __a2mp_add_cl(mgr, rsp->cl);
169 read_unlock(&hci_dev_list_lock);
171 a2mp_send(mgr, A2MP_DISCOVER_RSP, hdr->ident, len, rsp);
177 static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
178 struct a2mp_cmd *hdr)
180 struct a2mp_discov_rsp *rsp = (void *) skb->data;
181 u16 len = le16_to_cpu(hdr->len);
186 if (len < sizeof(*rsp))
190 skb_pull(skb, sizeof(*rsp));
192 ext_feat = le16_to_cpu(rsp->ext_feat);
194 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat);
196 /* check that packet is not broken for now */
197 while (ext_feat & A2MP_FEAT_EXT) {
198 if (len < sizeof(ext_feat))
201 ext_feat = get_unaligned_le16(skb->data);
202 BT_DBG("efm 0x%4.4x", ext_feat);
203 len -= sizeof(ext_feat);
204 skb_pull(skb, sizeof(ext_feat));
207 cl = (void *) skb->data;
208 while (len >= sizeof(*cl)) {
209 BT_DBG("Remote AMP id %d type %d status %d", cl->id, cl->type,
212 if (cl->id != AMP_ID_BREDR && cl->type != AMP_TYPE_BREDR) {
213 struct a2mp_info_req req;
217 a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr),
222 cl = (void *) skb_pull(skb, sizeof(*cl));
225 /* Fall back to L2CAP init sequence */
227 struct l2cap_conn *conn = mgr->l2cap_conn;
228 struct l2cap_chan *chan;
230 mutex_lock(&conn->chan_lock);
232 list_for_each_entry(chan, &conn->chan_l, list) {
234 BT_DBG("chan %p state %s", chan,
235 state_to_string(chan->state));
237 if (chan->scid == L2CAP_CID_A2MP)
240 l2cap_chan_lock(chan);
242 if (chan->state == BT_CONNECT)
243 l2cap_send_conn_req(chan);
245 l2cap_chan_unlock(chan);
248 mutex_unlock(&conn->chan_lock);
254 static int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb,
255 struct a2mp_cmd *hdr)
257 struct a2mp_cl *cl = (void *) skb->data;
259 while (skb->len >= sizeof(*cl)) {
260 BT_DBG("Controller id %d type %d status %d", cl->id, cl->type,
262 cl = (struct a2mp_cl *) skb_pull(skb, sizeof(*cl));
265 /* TODO send A2MP_CHANGE_RSP */
270 static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
271 struct a2mp_cmd *hdr)
273 struct a2mp_info_req *req = (void *) skb->data;
274 struct hci_dev *hdev;
276 if (le16_to_cpu(hdr->len) < sizeof(*req))
279 BT_DBG("id %d", req->id);
281 hdev = hci_dev_get(req->id);
282 if (!hdev || hdev->dev_type != HCI_AMP) {
283 struct a2mp_info_rsp rsp;
286 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
288 a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp),
294 set_bit(READ_LOC_AMP_INFO, &mgr->state);
295 hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
301 skb_pull(skb, sizeof(*req));
305 static int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
306 struct a2mp_cmd *hdr)
308 struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data;
309 struct a2mp_amp_assoc_req req;
310 struct amp_ctrl *ctrl;
312 if (le16_to_cpu(hdr->len) < sizeof(*rsp))
315 BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status);
320 ctrl = amp_ctrl_add(mgr, rsp->id);
325 a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req),
328 skb_pull(skb, sizeof(*rsp));
332 static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb,
333 struct a2mp_cmd *hdr)
335 struct a2mp_amp_assoc_req *req = (void *) skb->data;
336 struct hci_dev *hdev;
339 if (le16_to_cpu(hdr->len) < sizeof(*req))
342 BT_DBG("id %d", req->id);
344 /* Make sure that other request is not processed */
345 tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
347 hdev = hci_dev_get(req->id);
348 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR || tmp) {
349 struct a2mp_amp_assoc_rsp rsp;
353 rsp.status = A2MP_STATUS_COLLISION_OCCURED;
356 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
359 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp),
365 amp_read_loc_assoc(hdev, mgr);
371 skb_pull(skb, sizeof(*req));
375 static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
376 struct a2mp_cmd *hdr)
378 struct a2mp_amp_assoc_rsp *rsp = (void *) skb->data;
379 u16 len = le16_to_cpu(hdr->len);
380 struct hci_dev *hdev;
381 struct amp_ctrl *ctrl;
382 struct hci_conn *hcon;
385 if (len < sizeof(*rsp))
388 assoc_len = len - sizeof(*rsp);
390 BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp->id, rsp->status,
396 /* Save remote ASSOC data */
397 ctrl = amp_ctrl_lookup(mgr, rsp->id);
401 assoc = kmemdup(rsp->amp_assoc, assoc_len, GFP_KERNEL);
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 == AMP_TYPE_BREDR) {
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 = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL);
482 ctrl->assoc_len = assoc_len;
483 ctrl->assoc_rem_len = assoc_len;
484 ctrl->assoc_len_so_far = 0;
489 hcon = phylink_add(hdev, mgr, req->local_id, false);
491 amp_accept_phylink(hdev, mgr, hcon);
492 rsp.status = A2MP_STATUS_SUCCESS;
494 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
501 /* Reply error now and success after HCI Write Remote AMP Assoc
502 command complete with success status
504 if (rsp.status != A2MP_STATUS_SUCCESS) {
505 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident,
508 set_bit(WRITE_REMOTE_AMP_ASSOC, &mgr->state);
509 mgr->ident = hdr->ident;
512 skb_pull(skb, le16_to_cpu(hdr->len));
516 static int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
517 struct a2mp_cmd *hdr)
519 struct a2mp_physlink_req *req = (void *) skb->data;
520 struct a2mp_physlink_rsp rsp;
521 struct hci_dev *hdev;
522 struct hci_conn *hcon;
524 if (le16_to_cpu(hdr->len) < sizeof(*req))
527 BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id);
529 rsp.local_id = req->remote_id;
530 rsp.remote_id = req->local_id;
531 rsp.status = A2MP_STATUS_SUCCESS;
533 hdev = hci_dev_get(req->remote_id);
535 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
539 hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK,
540 &mgr->l2cap_conn->hcon->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 = 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,
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 hdr_len,
696 unsigned long len, int nb)
700 skb = bt_skb_alloc(hdr_len + len, GFP_KERNEL);
702 return ERR_PTR(-ENOMEM);
707 static const struct l2cap_ops a2mp_chan_ops = {
708 .name = "L2CAP A2MP channel",
709 .recv = a2mp_chan_recv_cb,
710 .close = a2mp_chan_close_cb,
711 .state_change = a2mp_chan_state_change_cb,
712 .alloc_skb = a2mp_chan_alloc_skb_cb,
714 /* Not implemented for A2MP */
715 .new_connection = l2cap_chan_no_new_connection,
716 .teardown = l2cap_chan_no_teardown,
717 .ready = l2cap_chan_no_ready,
718 .defer = l2cap_chan_no_defer,
719 .resume = l2cap_chan_no_resume,
720 .set_shutdown = l2cap_chan_no_set_shutdown,
721 .get_sndtimeo = l2cap_chan_no_get_sndtimeo,
724 static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
726 struct l2cap_chan *chan;
729 chan = l2cap_chan_create();
733 BT_DBG("chan %p", chan);
735 chan->chan_type = L2CAP_CHAN_FIXED;
736 chan->scid = L2CAP_CID_A2MP;
737 chan->dcid = L2CAP_CID_A2MP;
738 chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
739 chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
740 chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
742 chan->ops = &a2mp_chan_ops;
744 l2cap_chan_set_defaults(chan);
745 chan->remote_max_tx = chan->max_tx;
746 chan->remote_tx_win = chan->tx_win;
748 chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
749 chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
751 skb_queue_head_init(&chan->tx_q);
753 chan->mode = L2CAP_MODE_ERTM;
755 err = l2cap_ertm_init(chan);
757 l2cap_chan_del(chan, 0);
761 chan->conf_state = 0;
764 __l2cap_chan_add(conn, chan);
766 l2cap_chan_add(conn, chan);
768 chan->remote_mps = chan->omtu;
769 chan->mps = chan->omtu;
771 chan->state = BT_CONNECTED;
776 /* AMP Manager functions */
777 struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr)
779 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
781 kref_get(&mgr->kref);
786 static void amp_mgr_destroy(struct kref *kref)
788 struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref);
790 BT_DBG("mgr %p", mgr);
792 mutex_lock(&_mgr_list_lock);
793 list_del(&mgr->list);
794 mutex_unlock(&_mgr_list_lock);
796 amp_ctrl_list_flush(mgr);
800 int amp_mgr_put(struct amp_mgr *mgr)
802 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
804 return kref_put(&mgr->kref, &_mgr_destroy);
807 static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked)
810 struct l2cap_chan *chan;
812 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
816 BT_DBG("conn %p mgr %p", conn, mgr);
818 mgr->l2cap_conn = conn;
820 chan = a2mp_chan_open(conn, locked);
826 mgr->a2mp_chan = chan;
829 conn->hcon->amp_mgr = mgr;
831 kref_init(&mgr->kref);
833 /* Remote AMP ctrl list initialization */
834 INIT_LIST_HEAD(&mgr->amp_ctrls);
835 mutex_init(&mgr->amp_ctrls_lock);
837 mutex_lock(&_mgr_list_lock);
838 list_add(&mgr->list, &_mgr_list);
839 mutex_unlock(&_mgr_list_lock);
844 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
849 if (conn->hcon->type != ACL_LINK)
852 mgr = amp_mgr_create(conn, false);
854 BT_ERR("Could not create AMP manager");
858 BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan);
860 return mgr->a2mp_chan;
863 struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
867 mutex_lock(&_mgr_list_lock);
868 list_for_each_entry(mgr, &_mgr_list, list) {
869 if (test_and_clear_bit(state, &mgr->state)) {
871 mutex_unlock(&_mgr_list_lock);
875 mutex_unlock(&_mgr_list_lock);
880 void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
883 struct a2mp_info_rsp rsp;
885 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO);
889 BT_DBG("%s mgr %p", hdev->name, mgr);
892 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
894 if (hdev->amp_type != AMP_TYPE_BREDR) {
896 rsp.total_bw = cpu_to_le32(hdev->amp_total_bw);
897 rsp.max_bw = cpu_to_le32(hdev->amp_max_bw);
898 rsp.min_latency = cpu_to_le32(hdev->amp_min_latency);
899 rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap);
900 rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size);
903 a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp);
907 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status)
910 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
911 struct a2mp_amp_assoc_rsp *rsp;
914 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
918 BT_DBG("%s mgr %p", hdev->name, mgr);
920 len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
921 rsp = kzalloc(len, GFP_KERNEL);
930 rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
932 rsp->status = A2MP_STATUS_SUCCESS;
933 memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
936 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
941 void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status)
944 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
945 struct a2mp_physlink_req *req;
946 struct l2cap_chan *bredr_chan;
949 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL);
953 len = sizeof(*req) + loc_assoc->len;
955 BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len);
957 req = kzalloc(len, GFP_KERNEL);
963 bredr_chan = mgr->bredr_chan;
967 req->local_id = hdev->id;
968 req->remote_id = bredr_chan->remote_amp_id;
969 memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len);
971 a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req);
978 void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
981 struct a2mp_physlink_rsp rsp;
982 struct hci_conn *hs_hcon;
984 mgr = amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC);
988 hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
990 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
992 rsp.remote_id = hs_hcon->remote_id;
993 rsp.status = A2MP_STATUS_SUCCESS;
996 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev->name, mgr, hs_hcon,
999 rsp.local_id = hdev->id;
1000 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, mgr->ident, sizeof(rsp), &rsp);
1004 void a2mp_discover_amp(struct l2cap_chan *chan)
1006 struct l2cap_conn *conn = chan->conn;
1007 struct amp_mgr *mgr = conn->hcon->amp_mgr;
1008 struct a2mp_discov_req req;
1010 BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr);
1013 mgr = amp_mgr_create(conn, true);
1018 mgr->bredr_chan = chan;
1020 req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
1022 a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);