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/*
* Copyright 2022 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 <gtest/gtest.h>
#include "common/init_flags.h"
#include "device/include/controller.h"
#include "internal_include/bt_trace.h"
#include "stack/btm/btm_int_types.h"
#include "stack/include/l2cap_hci_link_interface.h"
#include "stack/l2cap/l2c_int.h"
#include "types/raw_address.h"
tBTM_CB btm_cb;
extern tL2C_CB l2cb;
void l2c_link_send_to_lower_br_edr(tL2C_LCB* p_lcb, BT_HDR* p_buf);
void l2c_link_send_to_lower_ble(tL2C_LCB* p_lcb, BT_HDR* p_buf);
// Global trace level referred in the code under test
uint8_t appl_trace_level = BT_TRACE_LEVEL_VERBOSE;
extern "C" void LogMsg(uint32_t trace_set_mask, const char* fmt_str, ...) {}
namespace {
constexpr uint16_t kAclBufferCountClassic = 123;
constexpr uint8_t kAclBufferCountBle = 45;
} // namespace
class StackL2capTest : public ::testing::Test {
protected:
void SetUp() override {
bluetooth::common::InitFlags::SetAllForTesting();
controller_.get_acl_buffer_count_classic = []() {
return kAclBufferCountClassic;
};
controller_.get_acl_buffer_count_ble = []() { return kAclBufferCountBle; };
controller_.supports_ble = []() -> bool { return true; };
l2c_init();
}
void TearDown() override {
l2c_free();
controller_ = {};
}
controller_t controller_;
};
TEST_F(StackL2capTest, l2cble_process_data_length_change_event) {
l2cb.lcb_pool[0].tx_data_len = 0xdead;
// ACL unknown and legal inputs
l2cble_process_data_length_change_event(0x1234, 0x001b, 0x001b);
ASSERT_EQ(0xdead, l2cb.lcb_pool[0].tx_data_len);
l2cb.lcb_pool[0].in_use = true;
l2cu_set_lcb_handle(l2cb.lcb_pool[0], 0x1234);
ASSERT_EQ(0x1234, l2cb.lcb_pool[0].Handle());
// ACL known and illegal inputs
l2cble_process_data_length_change_event(0x1234, 1, 1);
ASSERT_EQ(0xdead, l2cb.lcb_pool[0].tx_data_len);
// ACL known and legal inputs
l2cble_process_data_length_change_event(0x1234, 0x001b, 0x001b);
ASSERT_EQ(0x001b, l2cb.lcb_pool[0].tx_data_len);
}
class StackL2capChannelTest : public StackL2capTest {
protected:
void SetUp() override { StackL2capTest::SetUp(); }
void TearDown() override { StackL2capTest::TearDown(); }
tL2C_CCB ccb_ = {
.in_use = true,
.chnl_state = CST_OPEN, // tL2C_CHNL_STATE
.local_conn_cfg =
{
// tL2CAP_LE_CFG_INFO
.result = 0,
.mtu = 100,
.mps = 100,
.credits = L2CA_LeCreditDefault(),
.number_of_channels = L2CAP_CREDIT_BASED_MAX_CIDS,
},
.peer_conn_cfg =
{
// tL2CAP_LE_CFG_INFO
.result = 0,
.mtu = 100,
.mps = 100,
.credits = L2CA_LeCreditDefault(),
.number_of_channels = L2CAP_CREDIT_BASED_MAX_CIDS,
},
.is_first_seg = false,
.ble_sdu = nullptr, // BT_HDR*; Buffer for storing unassembled sdu
.ble_sdu_length = 0, /* Length of unassembled sdu length*/
.p_next_ccb = nullptr, // struct t_l2c_ccb* Next CCB in the chain
.p_prev_ccb = nullptr, // struct t_l2c_ccb* Previous CCB in the chain
.p_lcb = nullptr, // struct t_l2c_linkcb* Link this CCB is assigned to
.local_cid = 40,
.remote_cid = 80,
.l2c_ccb_timer = nullptr, // alarm_t* CCB Timer Entry
.p_rcb = nullptr, // tL2C_RCB* Registration CB for this Channel
.config_done = 0, // Configuration flag word
.remote_config_rsp_result = 0, // The config rsp result from remote
.local_id = 12, // Transaction ID for local trans
.remote_id = 22, // Transaction ID for local
.flags = 0,
.connection_initiator = false,
.our_cfg = {}, // tL2CAP_CFG_INFO Our saved configuration options
.peer_cfg = {}, // tL2CAP_CFG_INFO Peer's saved configuration options
.xmit_hold_q = nullptr, // fixed_queue_t* Transmit data hold queue
.cong_sent = false,
.buff_quota = 0,
.ccb_priority =
L2CAP_CHNL_PRIORITY_HIGH, // tL2CAP_CHNL_PRIORITY Channel priority
.tx_data_rate = 0, // tL2CAP_CHNL_PRIORITY Channel Tx data rate
.rx_data_rate = 0, // tL2CAP_CHNL_PRIORITY Channel Rx data rate
.ertm_info =
{
// .tL2CAP_ERTM_INFO
.preferred_mode = 0,
},
.fcrb =
{
// tL2C_FCRB
.next_tx_seq = 0,
.last_rx_ack = 0,
.next_seq_expected = 0,
.last_ack_sent = 0,
.num_tries = 0,
.max_held_acks = 0,
.remote_busy = false,
.rej_sent = false,
.srej_sent = false,
.wait_ack = false,
.rej_after_srej = false,
.send_f_rsp = false,
.rx_sdu_len = 0,
.p_rx_sdu =
nullptr, // BT_HDR* Buffer holding the SDU being received
.waiting_for_ack_q = nullptr, // fixed_queue_t*
.srej_rcv_hold_q = nullptr, // fixed_queue_t*
.retrans_q = nullptr, // fixed_queue_t*
.ack_timer = nullptr, // alarm_t*
.mon_retrans_timer = nullptr, // alarm_t*
},
.tx_mps = 0,
.max_rx_mtu = 0,
.fcr_cfg_tries = 0,
.peer_cfg_already_rejected = false,
.out_cfg_fcr_present = false,
.is_flushable = false,
.fixed_chnl_idle_tout = 0,
.tx_data_len = 0,
.remote_credit_count = 0,
.ecoc = false,
.reconfig_started = false,
.metrics = {},
};
};
TEST_F(StackL2capChannelTest, l2c_lcc_proc_pdu__FirstSegment) {
ccb_.is_first_seg = true;
BT_HDR* p_buf = (BT_HDR*)osi_calloc(sizeof(BT_HDR) + 32);
p_buf->len = 32;
l2c_lcc_proc_pdu(&ccb_, p_buf);
}
TEST_F(StackL2capChannelTest, l2c_lcc_proc_pdu__NextSegment) {
BT_HDR* p_buf = (BT_HDR*)osi_calloc(sizeof(BT_HDR) + 32);
p_buf->len = 32;
l2c_lcc_proc_pdu(&ccb_, p_buf);
}
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