| /****************************************************************************** |
| * |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| #include "stack_test_packet_utils.h" |
| |
| #include "hci/include/hci_layer.h" |
| #include "osi/include/allocator.h" |
| #include "stack/include/bt_hdr.h" |
| #include "stack/include/l2c_api.h" |
| #include "stack/include/l2cdefs.h" |
| |
| namespace bluetooth { |
| |
| std::vector<uint8_t> CreateL2capDataPacket(uint16_t lcid, |
| const std::vector<uint8_t>& data) { |
| // Data in little endian order |
| std::vector<uint8_t> result; |
| auto data_size = static_cast<uint16_t>(data.size()); |
| result.push_back(static_cast<uint8_t>(data_size)); |
| result.push_back(static_cast<uint8_t>(data_size >> 8)); |
| result.push_back(static_cast<uint8_t>(lcid)); |
| result.push_back(static_cast<uint8_t>(lcid >> 8)); |
| result.insert(result.end(), data.begin(), data.end()); |
| return result; |
| } |
| |
| std::vector<uint8_t> CreateAclPacket(uint16_t handle, uint8_t pb, uint8_t bc, |
| const std::vector<uint8_t>& data) { |
| // Data in little endian order |
| std::vector<uint8_t> result; |
| result.push_back(static_cast<uint8_t>(handle & 0x0F)); |
| uint8_t second_byte = 0; |
| second_byte |= (bc << 6) & 0b11000000; |
| second_byte |= (pb << 4) & 0b00110000; |
| second_byte |= (handle >> 8) & 0b00001111; |
| result.push_back(second_byte); |
| auto data_size = static_cast<uint16_t>(data.size()); |
| result.push_back(static_cast<uint8_t>(data_size)); |
| result.push_back(static_cast<uint8_t>(data_size >> 8)); |
| result.insert(result.end(), data.begin(), data.end()); |
| return result; |
| } |
| |
| BT_HDR* AllocateWrappedIncomingL2capAclPacket(const uint8_t* acl_packet_bytes, |
| size_t buffer_length) { |
| size_t packet_size = buffer_length + BT_HDR_SIZE; |
| auto packet = reinterpret_cast<BT_HDR*>(osi_malloc(packet_size)); |
| // Add ACL packet overhead + L2CAP packet overhead |
| packet->offset = 4 + L2CAP_PKT_OVERHEAD; |
| packet->len = static_cast<uint16_t>(buffer_length - 4 - L2CAP_PKT_OVERHEAD); |
| packet->layer_specific = 0; |
| packet->event = 0x1100; // MSG_HC_TO_STACK_HCI_ACL; |
| memcpy(packet->data, acl_packet_bytes, buffer_length); |
| return packet; |
| } |
| |
| BT_HDR* AllocateWrappedIncomingL2capAclPacket( |
| const std::vector<uint8_t>& buffer) { |
| return AllocateWrappedIncomingL2capAclPacket(buffer.data(), buffer.size()); |
| } |
| |
| BT_HDR* AllocateWrappedOutgoingL2capAclPacket(const uint8_t* acl_packet_bytes, |
| size_t buffer_length) { |
| size_t acl_l2cap_header_size = 4 + L2CAP_PKT_OVERHEAD; |
| CHECK_GE(L2CAP_MIN_OFFSET, static_cast<int>(acl_l2cap_header_size)); |
| size_t packet_size = |
| BT_HDR_SIZE + L2CAP_MIN_OFFSET + buffer_length - acl_l2cap_header_size; |
| auto packet = reinterpret_cast<BT_HDR*>(osi_malloc(packet_size)); |
| packet->offset = L2CAP_MIN_OFFSET; |
| packet->len = static_cast<uint16_t>(buffer_length - acl_l2cap_header_size); |
| packet->layer_specific = 0; |
| packet->event = 0; |
| memcpy(packet->data + packet->offset - acl_l2cap_header_size, |
| acl_packet_bytes, buffer_length); |
| return packet; |
| } |
| |
| BT_HDR* AllocateWrappedOutgoingL2capAclPacket( |
| const std::vector<uint8_t>& buffer) { |
| return AllocateWrappedOutgoingL2capAclPacket(buffer.data(), buffer.size()); |
| } |
| |
| } // namespace bluetooth |