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_bluetooth_sapphire/internal/host/common/assert.h"
18 #include "pw_bluetooth_sapphire/internal/host/common/log.h"
19 #include "pw_bluetooth_sapphire/internal/host/l2cap/bredr_dynamic_channel.h"
20 #include "pw_bluetooth_sapphire/internal/host/l2cap/dynamic_channel_registry.h"
21 #include "pw_bluetooth_sapphire/internal/host/l2cap/l2cap_defs.h"
22
23 namespace bt::l2cap::internal {
24
DynamicChannel(DynamicChannelRegistry * registry,Psm psm,ChannelId local_cid,ChannelId remote_cid)25 DynamicChannel::DynamicChannel(DynamicChannelRegistry* registry,
26 Psm psm,
27 ChannelId local_cid,
28 ChannelId remote_cid)
29 : registry_(registry),
30 psm_(psm),
31 local_cid_(local_cid),
32 remote_cid_(remote_cid),
33 opened_(false) {
34 PW_DCHECK(registry_);
35 }
36
SetRemoteChannelId(ChannelId remote_cid)37 bool DynamicChannel::SetRemoteChannelId(ChannelId remote_cid) {
38 // do not allow duplicate remote CIDs
39 auto channel = registry_->FindChannelByRemoteId(remote_cid);
40 if (channel && channel != this) {
41 bt_log(WARN,
42 "l2cap",
43 "channel %#.4x: received remote channel id %#.4x that is already "
44 "set for channel %#.4x",
45 local_cid(),
46 remote_cid,
47 channel->local_cid());
48 return false;
49 }
50
51 remote_cid_ = remote_cid;
52 return true;
53 }
54
OnDisconnected()55 void DynamicChannel::OnDisconnected() {
56 registry_->OnChannelDisconnected(this);
57 }
58
59 } // namespace bt::l2cap::internal
60