1 /*
2 * Copyright 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "link_layer_socket_device"
18
19 #include "link_layer_socket_device.h"
20
21 #include <unistd.h>
22
23 #include "osi/include/log.h"
24 #include "packets/link_layer/link_layer_packet_builder.h"
25 #include "packets/link_layer/link_layer_packet_view.h"
26 #include "packets/packet_view.h"
27 #include "packets/view.h"
28
29 using std::vector;
30
31 namespace test_vendor_lib {
32
LinkLayerSocketDevice(int socket_fd,Phy::Type phy_type)33 LinkLayerSocketDevice::LinkLayerSocketDevice(int socket_fd, Phy::Type phy_type)
34 : socket_(socket_fd), phy_type_(phy_type) {}
35
TimerTick()36 void LinkLayerSocketDevice::TimerTick() {
37 if (bytes_left_ == 0) {
38 received_ = std::make_shared<std::vector<uint8_t>>(Link::kSizeBytes);
39 size_t bytes_received = socket_.TryReceive(Link::kSizeBytes, received_->data());
40 if (bytes_received == 0) {
41 return;
42 }
43 CHECK(bytes_received == Link::kSizeBytes) << "bytes_received == " << bytes_received;
44 packets::PacketView<true> size({packets::View(received_, 0, Link::kSizeBytes)});
45 bytes_left_ = size.begin().extract<uint32_t>();
46 received_->resize(Link::kSizeBytes + bytes_left_);
47 offset_ = Link::kSizeBytes;
48 }
49 size_t bytes_received = socket_.TryReceive(bytes_left_, received_->data() + offset_);
50 if (bytes_received == 0) {
51 return;
52 }
53 bytes_left_ -= bytes_received;
54 offset_ += bytes_received;
55 if (bytes_left_ == 0) {
56 SendLinkLayerPacket(packets::LinkLayerPacketBuilder::ReWrap(received_), phy_type_);
57 offset_ = 0;
58 received_.reset();
59 }
60 }
61
IncomingPacket(packets::LinkLayerPacketView packet)62 void LinkLayerSocketDevice::IncomingPacket(packets::LinkLayerPacketView packet) {
63 socket_.TrySend(packet);
64 }
65
66 } // namespace test_vendor_lib
67