1 // Copyright 2023 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14
15 #include "pw_bluetooth_sapphire/internal/host/l2cap/dynamic_channel.h"
16
17 #include <pw_assert/check.h>
18
19 #include "pw_bluetooth_sapphire/internal/host/common/log.h"
20 #include "pw_bluetooth_sapphire/internal/host/l2cap/bredr_dynamic_channel.h"
21 #include "pw_bluetooth_sapphire/internal/host/l2cap/dynamic_channel_registry.h"
22 #include "pw_bluetooth_sapphire/internal/host/l2cap/l2cap_defs.h"
23
24 namespace bt::l2cap::internal {
25
DynamicChannel(DynamicChannelRegistry * registry,Psm psm,ChannelId local_cid,ChannelId remote_cid)26 DynamicChannel::DynamicChannel(DynamicChannelRegistry* registry,
27 Psm psm,
28 ChannelId local_cid,
29 ChannelId remote_cid)
30 : registry_(registry),
31 psm_(psm),
32 local_cid_(local_cid),
33 remote_cid_(remote_cid),
34 opened_(false) {
35 PW_DCHECK(registry_);
36 }
37
SetRemoteChannelId(ChannelId remote_cid)38 bool DynamicChannel::SetRemoteChannelId(ChannelId remote_cid) {
39 // do not allow duplicate remote CIDs
40 auto channel = registry_->FindChannelByRemoteId(remote_cid);
41 if (channel && channel != this) {
42 bt_log(WARN,
43 "l2cap",
44 "channel %#.4x: received remote channel id %#.4x that is already "
45 "set for channel %#.4x",
46 local_cid(),
47 remote_cid,
48 channel->local_cid());
49 return false;
50 }
51
52 remote_cid_ = remote_cid;
53 return true;
54 }
55
OnDisconnected()56 void DynamicChannel::OnDisconnected() {
57 registry_->OnChannelDisconnected(this);
58 }
59
60 } // namespace bt::l2cap::internal
61