blob: efcd108822c43134e3d64755e24c16410f0598d5 [file] [log] [blame]
Andrei Emeltchenko466f8002012-05-29 13:59:01 +03001/*
2 Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved.
3 Copyright (c) 2011,2012 Intel Corp.
4
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.
8
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.
13*/
14
15#include <net/bluetooth/bluetooth.h>
16#include <net/bluetooth/hci_core.h>
17#include <net/bluetooth/l2cap.h>
Marcel Holtmann7ef9fbf2013-10-10 14:54:14 -070018
Marcel Holtmann70247282013-10-10 14:54:15 -070019#include "a2mp.h"
Marcel Holtmann7ef9fbf2013-10-10 14:54:14 -070020#include "amp.h"
Andrei Emeltchenko466f8002012-05-29 13:59:01 +030021
Andrei Emeltchenkof97268f2012-09-27 17:26:07 +030022/* Global AMP Manager list */
23LIST_HEAD(amp_mgr_list);
24DEFINE_MUTEX(amp_mgr_list_lock);
25
Andrei Emeltchenkof6d3c6e2012-05-29 13:59:03 +030026/* A2MP build & send command helper functions */
27static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
28{
29 struct a2mp_cmd *cmd;
30 int plen;
31
32 plen = sizeof(*cmd) + len;
33 cmd = kzalloc(plen, GFP_KERNEL);
34 if (!cmd)
35 return NULL;
36
37 cmd->code = code;
38 cmd->ident = ident;
39 cmd->len = cpu_to_le16(len);
40
41 memcpy(cmd->data, data, len);
42
43 return cmd;
44}
45
Andrei Emeltchenko8e2a0d92012-09-27 17:26:08 +030046void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data)
Andrei Emeltchenkof6d3c6e2012-05-29 13:59:03 +030047{
48 struct l2cap_chan *chan = mgr->a2mp_chan;
49 struct a2mp_cmd *cmd;
50 u16 total_len = len + sizeof(*cmd);
51 struct kvec iv;
52 struct msghdr msg;
53
54 cmd = __a2mp_build(code, ident, len, data);
55 if (!cmd)
56 return;
57
58 iv.iov_base = cmd;
59 iv.iov_len = total_len;
60
61 memset(&msg, 0, sizeof(msg));
62
63 msg.msg_iov = (struct iovec *) &iv;
64 msg.msg_iovlen = 1;
65
66 l2cap_chan_send(chan, &msg, total_len, 0);
67
68 kfree(cmd);
69}
70
Andrei Emeltchenko9495b2e2012-09-27 17:26:22 +030071u8 __next_ident(struct amp_mgr *mgr)
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +030072{
73 if (++mgr->ident == 0)
74 mgr->ident = 1;
75
76 return mgr->ident;
77}
78
Andrei Emeltchenko8598d062012-05-29 13:59:09 +030079/* hci_dev_list shall be locked */
Marcel Holtmann23f0cb42013-10-05 11:47:47 -070080static void __a2mp_add_cl(struct amp_mgr *mgr, struct a2mp_cl *cl)
Andrei Emeltchenko8598d062012-05-29 13:59:09 +030081{
Andrei Emeltchenko8598d062012-05-29 13:59:09 +030082 struct hci_dev *hdev;
Marcel Holtmanne8803532013-10-06 02:08:35 -070083 int i = 1;
Andrei Emeltchenko8598d062012-05-29 13:59:09 +030084
Marcel Holtmann346e7092013-10-05 11:47:46 -070085 cl[0].id = AMP_ID_BREDR;
86 cl[0].type = AMP_TYPE_BREDR;
87 cl[0].status = AMP_STATUS_BLUETOOTH_ONLY;
Andrei Emeltchenko8598d062012-05-29 13:59:09 +030088
89 list_for_each_entry(hdev, &hci_dev_list, list) {
Marcel Holtmanne8803532013-10-06 02:08:35 -070090 if (hdev->dev_type == HCI_AMP) {
91 cl[i].id = hdev->id;
92 cl[i].type = hdev->amp_type;
Marcel Holtmanncd0a85c2013-10-07 00:58:34 -070093 if (test_bit(HCI_UP, &hdev->flags))
94 cl[i].status = hdev->amp_status;
95 else
96 cl[i].status = AMP_STATUS_POWERED_DOWN;
Marcel Holtmanne8803532013-10-06 02:08:35 -070097 i++;
98 }
Andrei Emeltchenko8598d062012-05-29 13:59:09 +030099 }
100}
101
Andrei Emeltchenko21dbd2c2012-05-29 13:59:08 +0300102/* Processing A2MP messages */
103static int a2mp_command_rej(struct amp_mgr *mgr, struct sk_buff *skb,
104 struct a2mp_cmd *hdr)
105{
106 struct a2mp_cmd_rej *rej = (void *) skb->data;
107
108 if (le16_to_cpu(hdr->len) < sizeof(*rej))
109 return -EINVAL;
110
111 BT_DBG("ident %d reason %d", hdr->ident, le16_to_cpu(rej->reason));
112
113 skb_pull(skb, sizeof(*rej));
114
115 return 0;
116}
117
Andrei Emeltchenko8598d062012-05-29 13:59:09 +0300118static int a2mp_discover_req(struct amp_mgr *mgr, struct sk_buff *skb,
119 struct a2mp_cmd *hdr)
120{
121 struct a2mp_discov_req *req = (void *) skb->data;
122 u16 len = le16_to_cpu(hdr->len);
123 struct a2mp_discov_rsp *rsp;
124 u16 ext_feat;
125 u8 num_ctrl;
Marcel Holtmannf822c412013-10-05 11:47:41 -0700126 struct hci_dev *hdev;
Andrei Emeltchenko8598d062012-05-29 13:59:09 +0300127
128 if (len < sizeof(*req))
129 return -EINVAL;
130
131 skb_pull(skb, sizeof(*req));
132
133 ext_feat = le16_to_cpu(req->ext_feat);
134
135 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req->mtu), ext_feat);
136
137 /* check that packet is not broken for now */
138 while (ext_feat & A2MP_FEAT_EXT) {
139 if (len < sizeof(ext_feat))
140 return -EINVAL;
141
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));
146 }
147
148 read_lock(&hci_dev_list_lock);
149
Marcel Holtmannf822c412013-10-05 11:47:41 -0700150 /* at minimum the BR/EDR needs to be listed */
151 num_ctrl = 1;
152
153 list_for_each_entry(hdev, &hci_dev_list, list) {
154 if (hdev->dev_type == HCI_AMP)
155 num_ctrl++;
156 }
157
Andrei Emeltchenko8598d062012-05-29 13:59:09 +0300158 len = num_ctrl * sizeof(struct a2mp_cl) + sizeof(*rsp);
159 rsp = kmalloc(len, GFP_ATOMIC);
160 if (!rsp) {
161 read_unlock(&hci_dev_list_lock);
162 return -ENOMEM;
163 }
164
165 rsp->mtu = __constant_cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
166 rsp->ext_feat = 0;
167
Marcel Holtmann23f0cb42013-10-05 11:47:47 -0700168 __a2mp_add_cl(mgr, rsp->cl);
Andrei Emeltchenko8598d062012-05-29 13:59:09 +0300169
170 read_unlock(&hci_dev_list_lock);
171
172 a2mp_send(mgr, A2MP_DISCOVER_RSP, hdr->ident, len, rsp);
173
174 kfree(rsp);
175 return 0;
176}
177
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +0300178static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
179 struct a2mp_cmd *hdr)
180{
181 struct a2mp_discov_rsp *rsp = (void *) skb->data;
182 u16 len = le16_to_cpu(hdr->len);
183 struct a2mp_cl *cl;
184 u16 ext_feat;
Andrei Emeltchenko2766be42012-09-27 17:26:21 +0300185 bool found = false;
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +0300186
187 if (len < sizeof(*rsp))
188 return -EINVAL;
189
190 len -= sizeof(*rsp);
191 skb_pull(skb, sizeof(*rsp));
192
193 ext_feat = le16_to_cpu(rsp->ext_feat);
194
195 BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat);
196
197 /* check that packet is not broken for now */
198 while (ext_feat & A2MP_FEAT_EXT) {
199 if (len < sizeof(ext_feat))
200 return -EINVAL;
201
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));
206 }
207
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,
211 cl->status);
212
Marcel Holtmanna646bd82013-10-05 13:57:53 -0700213 if (cl->id != AMP_ID_BREDR && cl->type != AMP_TYPE_BREDR) {
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +0300214 struct a2mp_info_req req;
215
Andrei Emeltchenko2766be42012-09-27 17:26:21 +0300216 found = true;
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +0300217 req.id = cl->id;
218 a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr),
219 sizeof(req), &req);
220 }
221
222 len -= sizeof(*cl);
223 cl = (void *) skb_pull(skb, sizeof(*cl));
224 }
225
Andrei Emeltchenko2766be42012-09-27 17:26:21 +0300226 /* Fall back to L2CAP init sequence */
227 if (!found) {
228 struct l2cap_conn *conn = mgr->l2cap_conn;
229 struct l2cap_chan *chan;
230
231 mutex_lock(&conn->chan_lock);
232
233 list_for_each_entry(chan, &conn->chan_l, list) {
234
235 BT_DBG("chan %p state %s", chan,
236 state_to_string(chan->state));
237
238 if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP)
239 continue;
240
241 l2cap_chan_lock(chan);
242
243 if (chan->state == BT_CONNECT)
244 l2cap_send_conn_req(chan);
245
246 l2cap_chan_unlock(chan);
247 }
248
249 mutex_unlock(&conn->chan_lock);
250 }
251
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +0300252 return 0;
253}
254
Andrei Emeltchenko329d81af2012-05-29 13:59:10 +0300255static int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb,
256 struct a2mp_cmd *hdr)
257{
258 struct a2mp_cl *cl = (void *) skb->data;
259
260 while (skb->len >= sizeof(*cl)) {
261 BT_DBG("Controller id %d type %d status %d", cl->id, cl->type,
262 cl->status);
263 cl = (struct a2mp_cl *) skb_pull(skb, sizeof(*cl));
264 }
265
266 /* TODO send A2MP_CHANGE_RSP */
267
268 return 0;
269}
270
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300271static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
272 struct a2mp_cmd *hdr)
273{
274 struct a2mp_info_req *req = (void *) skb->data;
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300275 struct hci_dev *hdev;
276
277 if (le16_to_cpu(hdr->len) < sizeof(*req))
278 return -EINVAL;
279
280 BT_DBG("id %d", req->id);
281
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300282 hdev = hci_dev_get(req->id);
Andrei Emeltchenkobc8dce42012-09-28 14:28:50 +0300283 if (!hdev || hdev->dev_type != HCI_AMP) {
Andrei Emeltchenko8e2a0d92012-09-27 17:26:08 +0300284 struct a2mp_info_rsp rsp;
285
286 rsp.id = req->id;
287 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
288
289 a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp),
290 &rsp);
Andrei Emeltchenkobc8dce42012-09-28 14:28:50 +0300291
292 goto done;
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300293 }
294
Andrei Emeltchenkocb6801c62012-12-07 14:59:08 +0200295 set_bit(READ_LOC_AMP_INFO, &mgr->state);
Andrei Emeltchenkobc8dce42012-09-28 14:28:50 +0300296 hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300297
Andrei Emeltchenkobc8dce42012-09-28 14:28:50 +0300298done:
299 if (hdev)
300 hci_dev_put(hdev);
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300301
302 skb_pull(skb, sizeof(*req));
303 return 0;
304}
305
Andrei Emeltchenko0d868de2012-09-27 17:26:14 +0300306static int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
307 struct a2mp_cmd *hdr)
308{
309 struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data;
310 struct a2mp_amp_assoc_req req;
311 struct amp_ctrl *ctrl;
312
313 if (le16_to_cpu(hdr->len) < sizeof(*rsp))
314 return -EINVAL;
315
316 BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status);
317
318 if (rsp->status)
319 return -EINVAL;
320
Andrei Emeltchenkofa4ebc62012-10-05 16:56:55 +0300321 ctrl = amp_ctrl_add(mgr, rsp->id);
Andrei Emeltchenko0d868de2012-09-27 17:26:14 +0300322 if (!ctrl)
323 return -ENOMEM;
324
Andrei Emeltchenko0d868de2012-09-27 17:26:14 +0300325 req.id = rsp->id;
326 a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req),
327 &req);
328
329 skb_pull(skb, sizeof(*rsp));
330 return 0;
331}
332
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300333static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb,
334 struct a2mp_cmd *hdr)
335{
336 struct a2mp_amp_assoc_req *req = (void *) skb->data;
337 struct hci_dev *hdev;
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300338 struct amp_mgr *tmp;
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300339
340 if (le16_to_cpu(hdr->len) < sizeof(*req))
341 return -EINVAL;
342
343 BT_DBG("id %d", req->id);
344
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300345 /* Make sure that other request is not processed */
346 tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
347
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300348 hdev = hci_dev_get(req->id);
Marcel Holtmannece69122013-10-05 11:47:43 -0700349 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR || tmp) {
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300350 struct a2mp_amp_assoc_rsp rsp;
351 rsp.id = req->id;
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300352
353 if (tmp) {
354 rsp.status = A2MP_STATUS_COLLISION_OCCURED;
355 amp_mgr_put(tmp);
356 } else {
357 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
358 }
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300359
360 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp),
361 &rsp);
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300362
363 goto done;
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300364 }
365
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300366 amp_read_loc_assoc(hdev, mgr);
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300367
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300368done:
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300369 if (hdev)
370 hci_dev_put(hdev);
371
372 skb_pull(skb, sizeof(*req));
373 return 0;
374}
375
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300376static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
377 struct a2mp_cmd *hdr)
378{
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;
Andrei Emeltchenko13465c02012-09-28 16:55:00 +0300384 size_t assoc_len;
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300385
386 if (len < sizeof(*rsp))
387 return -EINVAL;
388
Andrei Emeltchenko13465c02012-09-28 16:55:00 +0300389 assoc_len = len - sizeof(*rsp);
390
391 BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp->id, rsp->status,
392 assoc_len);
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300393
394 if (rsp->status)
395 return -EINVAL;
396
397 /* Save remote ASSOC data */
398 ctrl = amp_ctrl_lookup(mgr, rsp->id);
399 if (ctrl) {
Andrei Emeltchenko13465c02012-09-28 16:55:00 +0300400 u8 *assoc;
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300401
Alexandru Gheorghiu5ae327f2013-03-17 07:16:50 +0200402 assoc = kmemdup(rsp->amp_assoc, assoc_len, GFP_KERNEL);
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300403 if (!assoc) {
404 amp_ctrl_put(ctrl);
405 return -ENOMEM;
406 }
407
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300408 ctrl->assoc = assoc;
409 ctrl->assoc_len = assoc_len;
410 ctrl->assoc_rem_len = assoc_len;
411 ctrl->assoc_len_so_far = 0;
412
413 amp_ctrl_put(ctrl);
414 }
415
416 /* Create Phys Link */
417 hdev = hci_dev_get(rsp->id);
418 if (!hdev)
419 return -EINVAL;
420
Andrei Emeltchenkoa0c234f2012-10-05 16:56:56 +0300421 hcon = phylink_add(hdev, mgr, rsp->id, true);
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300422 if (!hcon)
423 goto done;
424
425 BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon, hdev->id, rsp->id);
426
Andrei Emeltchenkofffadc02012-11-01 15:37:03 +0200427 mgr->bredr_chan->remote_amp_id = rsp->id;
Andrei Emeltchenko9495b2e2012-09-27 17:26:22 +0300428
Andrei Emeltchenkoa02226d2012-09-27 17:26:19 +0300429 amp_create_phylink(hdev, mgr, hcon);
430
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300431done:
432 hci_dev_put(hdev);
433 skb_pull(skb, len);
434 return 0;
435}
436
Andrei Emeltchenkoe072f5d2012-05-29 13:59:13 +0300437static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
438 struct a2mp_cmd *hdr)
439{
440 struct a2mp_physlink_req *req = (void *) skb->data;
441
442 struct a2mp_physlink_rsp rsp;
443 struct hci_dev *hdev;
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300444 struct hci_conn *hcon;
Andrei Emeltchenko0b26ab92012-09-27 17:26:24 +0300445 struct amp_ctrl *ctrl;
Andrei Emeltchenkoe072f5d2012-05-29 13:59:13 +0300446
447 if (le16_to_cpu(hdr->len) < sizeof(*req))
448 return -EINVAL;
449
450 BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id);
451
452 rsp.local_id = req->remote_id;
453 rsp.remote_id = req->local_id;
454
455 hdev = hci_dev_get(req->remote_id);
Marcel Holtmannece69122013-10-05 11:47:43 -0700456 if (!hdev || hdev->amp_type == AMP_TYPE_BREDR) {
Andrei Emeltchenkoe072f5d2012-05-29 13:59:13 +0300457 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
458 goto send_rsp;
459 }
460
Andrei Emeltchenko0b26ab92012-09-27 17:26:24 +0300461 ctrl = amp_ctrl_lookup(mgr, rsp.remote_id);
462 if (!ctrl) {
Andrei Emeltchenkofa4ebc62012-10-05 16:56:55 +0300463 ctrl = amp_ctrl_add(mgr, rsp.remote_id);
Andrei Emeltchenko0b26ab92012-09-27 17:26:24 +0300464 if (ctrl) {
465 amp_ctrl_get(ctrl);
466 } else {
467 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
468 goto send_rsp;
469 }
470 }
471
472 if (ctrl) {
Andrei Emeltchenko13465c02012-09-28 16:55:00 +0300473 size_t assoc_len = le16_to_cpu(hdr->len) - sizeof(*req);
474 u8 *assoc;
Andrei Emeltchenko0b26ab92012-09-27 17:26:24 +0300475
Alexandru Gheorghiu5ae327f2013-03-17 07:16:50 +0200476 assoc = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL);
Andrei Emeltchenko0b26ab92012-09-27 17:26:24 +0300477 if (!assoc) {
478 amp_ctrl_put(ctrl);
479 return -ENOMEM;
480 }
481
Andrei Emeltchenko0b26ab92012-09-27 17:26:24 +0300482 ctrl->assoc = assoc;
483 ctrl->assoc_len = assoc_len;
484 ctrl->assoc_rem_len = assoc_len;
485 ctrl->assoc_len_so_far = 0;
486
487 amp_ctrl_put(ctrl);
488 }
489
Andrei Emeltchenkoa0c234f2012-10-05 16:56:56 +0300490 hcon = phylink_add(hdev, mgr, req->local_id, false);
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300491 if (hcon) {
Andrei Emeltchenkodffa3872012-09-27 17:26:23 +0300492 amp_accept_phylink(hdev, mgr, hcon);
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300493 rsp.status = A2MP_STATUS_SUCCESS;
494 } else {
495 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
496 }
Andrei Emeltchenkoe072f5d2012-05-29 13:59:13 +0300497
498send_rsp:
499 if (hdev)
500 hci_dev_put(hdev);
501
Andrei Emeltchenko8e05e3b2012-12-07 14:59:05 +0200502 /* Reply error now and success after HCI Write Remote AMP Assoc
503 command complete with success status
504 */
505 if (rsp.status != A2MP_STATUS_SUCCESS) {
506 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident,
507 sizeof(rsp), &rsp);
508 } else {
Andrei Emeltchenkocb6801c62012-12-07 14:59:08 +0200509 set_bit(WRITE_REMOTE_AMP_ASSOC, &mgr->state);
Andrei Emeltchenko8e05e3b2012-12-07 14:59:05 +0200510 mgr->ident = hdr->ident;
511 }
Andrei Emeltchenkoe072f5d2012-05-29 13:59:13 +0300512
513 skb_pull(skb, le16_to_cpu(hdr->len));
514 return 0;
515}
516
Andrei Emeltchenko6113f842012-05-29 13:59:14 +0300517static int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
518 struct a2mp_cmd *hdr)
519{
520 struct a2mp_physlink_req *req = (void *) skb->data;
521 struct a2mp_physlink_rsp rsp;
522 struct hci_dev *hdev;
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300523 struct hci_conn *hcon;
Andrei Emeltchenko6113f842012-05-29 13:59:14 +0300524
525 if (le16_to_cpu(hdr->len) < sizeof(*req))
526 return -EINVAL;
527
528 BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id);
529
530 rsp.local_id = req->remote_id;
531 rsp.remote_id = req->local_id;
532 rsp.status = A2MP_STATUS_SUCCESS;
533
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300534 hdev = hci_dev_get(req->remote_id);
Andrei Emeltchenko6113f842012-05-29 13:59:14 +0300535 if (!hdev) {
536 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
537 goto send_rsp;
538 }
539
Marcel Holtmannbdc8ead22013-10-13 02:23:38 -0700540 hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK,
541 &mgr->l2cap_conn->hcon->dst);
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300542 if (!hcon) {
543 BT_ERR("No phys link exist");
544 rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS;
545 goto clean;
546 }
547
Andrei Emeltchenko6113f842012-05-29 13:59:14 +0300548 /* TODO Disconnect Phys Link here */
549
Andrei Emeltchenkocb8488c2012-09-27 17:26:13 +0300550clean:
Andrei Emeltchenko6113f842012-05-29 13:59:14 +0300551 hci_dev_put(hdev);
552
553send_rsp:
554 a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp);
555
556 skb_pull(skb, sizeof(*req));
557 return 0;
558}
559
Andrei Emeltchenkof6410a82012-05-29 13:59:15 +0300560static inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
561 struct a2mp_cmd *hdr)
562{
Andrei Emeltchenko8e8c7e32012-07-19 17:03:41 +0300563 BT_DBG("ident %d code 0x%2.2x", hdr->ident, hdr->code);
Andrei Emeltchenkof6410a82012-05-29 13:59:15 +0300564
565 skb_pull(skb, le16_to_cpu(hdr->len));
566 return 0;
567}
568
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300569/* Handle A2MP signalling */
570static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
571{
Andrei Emeltchenkod9fc1d52012-07-19 17:03:46 +0300572 struct a2mp_cmd *hdr;
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300573 struct amp_mgr *mgr = chan->data;
574 int err = 0;
575
576 amp_mgr_get(mgr);
577
578 while (skb->len >= sizeof(*hdr)) {
Andrei Emeltchenkod9fc1d52012-07-19 17:03:46 +0300579 u16 len;
580
581 hdr = (void *) skb->data;
582 len = le16_to_cpu(hdr->len);
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300583
Andrei Emeltchenko8e8c7e32012-07-19 17:03:41 +0300584 BT_DBG("code 0x%2.2x id %d len %u", hdr->code, hdr->ident, len);
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300585
586 skb_pull(skb, sizeof(*hdr));
587
588 if (len > skb->len || !hdr->ident) {
589 err = -EINVAL;
590 break;
591 }
592
593 mgr->ident = hdr->ident;
594
595 switch (hdr->code) {
596 case A2MP_COMMAND_REJ:
Andrei Emeltchenko21dbd2c2012-05-29 13:59:08 +0300597 a2mp_command_rej(mgr, skb, hdr);
598 break;
599
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300600 case A2MP_DISCOVER_REQ:
Andrei Emeltchenko8598d062012-05-29 13:59:09 +0300601 err = a2mp_discover_req(mgr, skb, hdr);
602 break;
603
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300604 case A2MP_CHANGE_NOTIFY:
Andrei Emeltchenko329d81af2012-05-29 13:59:10 +0300605 err = a2mp_change_notify(mgr, skb, hdr);
606 break;
607
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300608 case A2MP_GETINFO_REQ:
Andrei Emeltchenko47f2d972012-05-29 13:59:11 +0300609 err = a2mp_getinfo_req(mgr, skb, hdr);
610 break;
611
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300612 case A2MP_GETAMPASSOC_REQ:
Andrei Emeltchenkoa28381dc2012-05-29 13:59:12 +0300613 err = a2mp_getampassoc_req(mgr, skb, hdr);
614 break;
615
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300616 case A2MP_CREATEPHYSLINK_REQ:
Andrei Emeltchenkoe072f5d2012-05-29 13:59:13 +0300617 err = a2mp_createphyslink_req(mgr, skb, hdr);
618 break;
619
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300620 case A2MP_DISCONNPHYSLINK_REQ:
Andrei Emeltchenko6113f842012-05-29 13:59:14 +0300621 err = a2mp_discphyslink_req(mgr, skb, hdr);
622 break;
623
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300624 case A2MP_DISCOVER_RSP:
Andrei Emeltchenkoaa095372012-09-27 17:26:10 +0300625 err = a2mp_discover_rsp(mgr, skb, hdr);
626 break;
627
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300628 case A2MP_GETINFO_RSP:
Andrei Emeltchenko0d868de2012-09-27 17:26:14 +0300629 err = a2mp_getinfo_rsp(mgr, skb, hdr);
630 break;
631
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300632 case A2MP_GETAMPASSOC_RSP:
Andrei Emeltchenko9a5e94d2012-09-27 17:26:15 +0300633 err = a2mp_getampassoc_rsp(mgr, skb, hdr);
634 break;
635
636 case A2MP_CHANGE_RSP:
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300637 case A2MP_CREATEPHYSLINK_RSP:
638 case A2MP_DISCONNPHYSLINK_RSP:
Andrei Emeltchenkof6410a82012-05-29 13:59:15 +0300639 err = a2mp_cmd_rsp(mgr, skb, hdr);
640 break;
641
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300642 default:
643 BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code);
644 err = -EINVAL;
645 break;
646 }
647 }
648
649 if (err) {
650 struct a2mp_cmd_rej rej;
Andrei Emeltchenkod9fc1d52012-07-19 17:03:46 +0300651
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300652 rej.reason = __constant_cpu_to_le16(0);
Andrei Emeltchenkod9fc1d52012-07-19 17:03:46 +0300653 hdr = (void *) skb->data;
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300654
655 BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err);
656
657 a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej),
658 &rej);
659 }
660
661 /* Always free skb and return success error code to prevent
662 from sending L2CAP Disconnect over A2MP channel */
663 kfree_skb(skb);
664
665 amp_mgr_put(mgr);
666
667 return 0;
668}
669
Andrei Emeltchenko46d5c902012-05-29 13:59:04 +0300670static void a2mp_chan_close_cb(struct l2cap_chan *chan)
671{
Jaganath Kanakkassery4af66c62012-07-13 18:17:55 +0530672 l2cap_chan_put(chan);
Andrei Emeltchenko46d5c902012-05-29 13:59:04 +0300673}
674
Gustavo Padovan53f52122013-10-15 19:24:45 -0300675static void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state,
676 int err)
Andrei Emeltchenko46d5c902012-05-29 13:59:04 +0300677{
678 struct amp_mgr *mgr = chan->data;
679
680 if (!mgr)
681 return;
682
683 BT_DBG("chan %p state %s", chan, state_to_string(state));
684
685 chan->state = state;
686
687 switch (state) {
688 case BT_CLOSED:
689 if (mgr)
690 amp_mgr_put(mgr);
691 break;
692 }
693}
694
695static struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan,
696 unsigned long len, int nb)
697{
698 return bt_skb_alloc(len, GFP_KERNEL);
699}
700
Andrei Emeltchenko466f8002012-05-29 13:59:01 +0300701static struct l2cap_ops a2mp_chan_ops = {
702 .name = "L2CAP A2MP channel",
Andrei Emeltchenko6b44d9b2012-05-29 13:59:07 +0300703 .recv = a2mp_chan_recv_cb,
Andrei Emeltchenko46d5c902012-05-29 13:59:04 +0300704 .close = a2mp_chan_close_cb,
705 .state_change = a2mp_chan_state_change_cb,
706 .alloc_skb = a2mp_chan_alloc_skb_cb,
707
708 /* Not implemented for A2MP */
Gustavo Padovan7e1af8a2012-05-29 13:19:26 -0300709 .new_connection = l2cap_chan_no_new_connection,
710 .teardown = l2cap_chan_no_teardown,
711 .ready = l2cap_chan_no_ready,
Gustavo Padovan2dc4e512012-10-12 19:35:24 +0800712 .defer = l2cap_chan_no_defer,
Marcel Holtmann2ce5fb52013-10-15 16:47:11 -0700713 .resume = l2cap_chan_no_resume,
Gustavo Padovan5ec1bbe2013-10-15 19:24:48 -0300714 .set_shutdown = l2cap_chan_no_set_shutdown,
Gustavo Padovan8d836d72013-10-15 19:24:47 -0300715 .get_sndtimeo = l2cap_chan_no_get_sndtimeo,
Andrei Emeltchenko466f8002012-05-29 13:59:01 +0300716};
717
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300718static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
Andrei Emeltchenko466f8002012-05-29 13:59:01 +0300719{
720 struct l2cap_chan *chan;
721 int err;
722
723 chan = l2cap_chan_create();
724 if (!chan)
725 return NULL;
726
727 BT_DBG("chan %p", chan);
728
Andrei Emeltchenko416fa752012-05-29 13:59:16 +0300729 chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP;
Andrei Emeltchenko466f8002012-05-29 13:59:01 +0300730 chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
731
732 chan->ops = &a2mp_chan_ops;
733
734 l2cap_chan_set_defaults(chan);
735 chan->remote_max_tx = chan->max_tx;
736 chan->remote_tx_win = chan->tx_win;
737
738 chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
739 chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
740
741 skb_queue_head_init(&chan->tx_q);
742
743 chan->mode = L2CAP_MODE_ERTM;
744
745 err = l2cap_ertm_init(chan);
746 if (err < 0) {
747 l2cap_chan_del(chan, 0);
748 return NULL;
749 }
750
751 chan->conf_state = 0;
752
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300753 if (locked)
754 __l2cap_chan_add(conn, chan);
755 else
756 l2cap_chan_add(conn, chan);
Andrei Emeltchenko466f8002012-05-29 13:59:01 +0300757
758 chan->remote_mps = chan->omtu;
759 chan->mps = chan->omtu;
760
761 chan->state = BT_CONNECTED;
762
763 return chan;
764}
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300765
766/* AMP Manager functions */
Andrei Emeltchenkof706adf2012-10-18 13:16:19 +0300767struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr)
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300768{
Andrei Emeltchenkoa0dfe0a2012-07-11 14:43:35 +0300769 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300770
771 kref_get(&mgr->kref);
Andrei Emeltchenkof706adf2012-10-18 13:16:19 +0300772
773 return mgr;
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300774}
775
776static void amp_mgr_destroy(struct kref *kref)
777{
778 struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref);
779
780 BT_DBG("mgr %p", mgr);
781
Andrei Emeltchenkof97268f2012-09-27 17:26:07 +0300782 mutex_lock(&amp_mgr_list_lock);
783 list_del(&mgr->list);
784 mutex_unlock(&amp_mgr_list_lock);
785
Andrei Emeltchenko52c0d6e2012-09-27 17:26:12 +0300786 amp_ctrl_list_flush(mgr);
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300787 kfree(mgr);
788}
789
790int amp_mgr_put(struct amp_mgr *mgr)
791{
Andrei Emeltchenkoa0dfe0a2012-07-11 14:43:35 +0300792 BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount));
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300793
794 return kref_put(&mgr->kref, &amp_mgr_destroy);
795}
796
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300797static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked)
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300798{
799 struct amp_mgr *mgr;
800 struct l2cap_chan *chan;
801
802 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
803 if (!mgr)
804 return NULL;
805
806 BT_DBG("conn %p mgr %p", conn, mgr);
807
808 mgr->l2cap_conn = conn;
809
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300810 chan = a2mp_chan_open(conn, locked);
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300811 if (!chan) {
812 kfree(mgr);
813 return NULL;
814 }
815
816 mgr->a2mp_chan = chan;
817 chan->data = mgr;
818
819 conn->hcon->amp_mgr = mgr;
820
821 kref_init(&mgr->kref);
822
Andrei Emeltchenko52c0d6e2012-09-27 17:26:12 +0300823 /* Remote AMP ctrl list initialization */
824 INIT_LIST_HEAD(&mgr->amp_ctrls);
825 mutex_init(&mgr->amp_ctrls_lock);
826
Andrei Emeltchenkof97268f2012-09-27 17:26:07 +0300827 mutex_lock(&amp_mgr_list_lock);
828 list_add(&mgr->list, &amp_mgr_list);
829 mutex_unlock(&amp_mgr_list_lock);
830
Andrei Emeltchenko9740e492012-05-29 13:59:02 +0300831 return mgr;
832}
Andrei Emeltchenko97e8e892012-05-29 13:59:17 +0300833
834struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
835 struct sk_buff *skb)
836{
837 struct amp_mgr *mgr;
838
Johan Hedberg07e307f2013-10-16 11:37:00 +0300839 if (conn->hcon->type != ACL_LINK)
840 return NULL;
841
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300842 mgr = amp_mgr_create(conn, false);
Andrei Emeltchenko97e8e892012-05-29 13:59:17 +0300843 if (!mgr) {
844 BT_ERR("Could not create AMP manager");
845 return NULL;
846 }
847
848 BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan);
849
850 return mgr->a2mp_chan;
851}
Andrei Emeltchenkof97268f2012-09-27 17:26:07 +0300852
853struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
854{
855 struct amp_mgr *mgr;
856
857 mutex_lock(&amp_mgr_list_lock);
858 list_for_each_entry(mgr, &amp_mgr_list, list) {
Andrei Emeltchenkocb6801c62012-12-07 14:59:08 +0200859 if (test_and_clear_bit(state, &mgr->state)) {
Andrei Emeltchenkof97268f2012-09-27 17:26:07 +0300860 amp_mgr_get(mgr);
861 mutex_unlock(&amp_mgr_list_lock);
862 return mgr;
863 }
864 }
865 mutex_unlock(&amp_mgr_list_lock);
866
867 return NULL;
868}
Andrei Emeltchenko8e2a0d92012-09-27 17:26:08 +0300869
870void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
871{
872 struct amp_mgr *mgr;
873 struct a2mp_info_rsp rsp;
874
875 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO);
876 if (!mgr)
877 return;
878
879 BT_DBG("%s mgr %p", hdev->name, mgr);
880
881 rsp.id = hdev->id;
882 rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
883
Marcel Holtmannece69122013-10-05 11:47:43 -0700884 if (hdev->amp_type != AMP_TYPE_BREDR) {
Andrei Emeltchenko8e2a0d92012-09-27 17:26:08 +0300885 rsp.status = 0;
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);
891 }
892
893 a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp);
894 amp_mgr_put(mgr);
895}
Andrei Emeltchenko903e4542012-09-27 17:26:09 +0300896
897void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status)
898{
899 struct amp_mgr *mgr;
900 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
901 struct a2mp_amp_assoc_rsp *rsp;
902 size_t len;
903
904 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
905 if (!mgr)
906 return;
907
908 BT_DBG("%s mgr %p", hdev->name, mgr);
909
910 len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
911 rsp = kzalloc(len, GFP_KERNEL);
912 if (!rsp) {
913 amp_mgr_put(mgr);
914 return;
915 }
916
917 rsp->id = hdev->id;
918
919 if (status) {
920 rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
921 } else {
922 rsp->status = A2MP_STATUS_SUCCESS;
923 memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
924 }
925
926 a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
927 amp_mgr_put(mgr);
928 kfree(rsp);
929}
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300930
Andrei Emeltchenko9495b2e2012-09-27 17:26:22 +0300931void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status)
932{
933 struct amp_mgr *mgr;
934 struct amp_assoc *loc_assoc = &hdev->loc_assoc;
935 struct a2mp_physlink_req *req;
936 struct l2cap_chan *bredr_chan;
937 size_t len;
938
939 mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL);
940 if (!mgr)
941 return;
942
943 len = sizeof(*req) + loc_assoc->len;
944
945 BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len);
946
947 req = kzalloc(len, GFP_KERNEL);
948 if (!req) {
949 amp_mgr_put(mgr);
950 return;
951 }
952
953 bredr_chan = mgr->bredr_chan;
954 if (!bredr_chan)
955 goto clean;
956
957 req->local_id = hdev->id;
Andrei Emeltchenkofffadc02012-11-01 15:37:03 +0200958 req->remote_id = bredr_chan->remote_amp_id;
Andrei Emeltchenko9495b2e2012-09-27 17:26:22 +0300959 memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len);
960
961 a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req);
962
963clean:
964 amp_mgr_put(mgr);
965 kfree(req);
966}
967
Andrei Emeltchenko8e05e3b2012-12-07 14:59:05 +0200968void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
969{
970 struct amp_mgr *mgr;
971 struct a2mp_physlink_rsp rsp;
972 struct hci_conn *hs_hcon;
973
974 mgr = amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC);
975 if (!mgr)
976 return;
977
978 hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
979 if (!hs_hcon) {
980 rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
981 } else {
982 rsp.remote_id = hs_hcon->remote_id;
983 rsp.status = A2MP_STATUS_SUCCESS;
984 }
985
986 BT_DBG("%s mgr %p hs_hcon %p status %u", hdev->name, mgr, hs_hcon,
987 status);
988
989 rsp.local_id = hdev->id;
990 a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, mgr->ident, sizeof(rsp), &rsp);
991 amp_mgr_put(mgr);
992}
993
Andrei Emeltchenko93c3e8f2012-09-27 17:26:16 +0300994void a2mp_discover_amp(struct l2cap_chan *chan)
995{
996 struct l2cap_conn *conn = chan->conn;
997 struct amp_mgr *mgr = conn->hcon->amp_mgr;
998 struct a2mp_discov_req req;
999
1000 BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr);
1001
1002 if (!mgr) {
1003 mgr = amp_mgr_create(conn, true);
1004 if (!mgr)
1005 return;
1006 }
1007
1008 mgr->bredr_chan = chan;
1009
1010 req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
1011 req.ext_feat = 0;
1012 a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);
1013}