1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* 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.
*/
#pragma once
#include <hicn/transport/config.h>
#include <hicn/transport/core/connector.h>
#include <hicn/transport/portability/portability.h>
#include <hicn/transport/utils/ring_buffer.h>
//#include <hicn/transport/core/hicn_vapi.h>
#include <hicn/transport/core/asio_wrapper.h>
#include <utils/epoll_event_reactor.h>
#include <utils/fd_deadline_timer.h>
#include <deque>
#include <future>
#include <mutex>
#include <thread>
extern "C" {
#include <libmemif.h>
};
#define _Static_assert static_assert
namespace transport {
namespace core {
#define APP_NAME "libtransport"
#define IF_NAME "vpp_connection"
class MemifConnector : public Connector {
static inline std::size_t kbuf_size = 2048;
static inline std::size_t klog2_ring_size = 13;
using PacketRing = utils::CircularFifo<utils::MemBuf::Ptr, queue_size>;
struct Details {
// index
uint16_t index;
// memif conenction handle
memif_conn_handle_t conn;
// transmit queue id
uint16_t tx_qid;
// tx buffers
memif_buffer_t *tx_bufs;
// allocated tx buffers counter
// number of tx buffers pointing to shared memory
uint16_t tx_buf_num;
// rx buffers
memif_buffer_t *rx_bufs;
// allocated rx buffers counter
// number of rx buffers pointing to shared memory
uint16_t rx_buf_num;
// interface ip address
uint8_t ip_addr[4];
};
public:
MemifConnector(PacketReceivedCallback &&receive_callback,
PacketSentCallback &&packet_sent,
OnCloseCallback &&close_callback,
OnReconnectCallback &&on_reconnect,
asio::io_service &io_service,
std::string app_name = "Libtransport");
~MemifConnector() override;
void send(Packet &packet) override;
void send(const utils::MemBuf::Ptr &buffer) override;
void close() override;
void connect(uint32_t memif_id, long memif_mode,
const std::string &socket_filename,
std::size_t buffer_size = kbuf_size,
std::size_t log2_ring_size = klog2_ring_size);
TRANSPORT_ALWAYS_INLINE uint32_t getMemifId() { return memif_id_; };
private:
void init();
int doSend();
int createMemif(uint32_t index, uint8_t is_master);
uint32_t getMemifConfiguration();
int deleteMemif();
static int controlFdUpdate(memif_fd_event_t fde, void *private_ctx);
static int onConnect(memif_conn_handle_t conn, void *private_ctx);
static int onDisconnect(memif_conn_handle_t conn, void *private_ctx);
static int onInterrupt(memif_conn_handle_t conn, void *private_ctx,
uint16_t qid);
void threadMain();
uint16_t txBurst(uint16_t qid, std::error_code &ec);
uint16_t bufferAlloc(long n, uint16_t qid, std::error_code &ec);
void scheduleSend(std::uint64_t delay);
void sendCallback(const std::error_code &ec);
auto shared_from_this() { return utils::shared_from(this); }
private:
int epfd;
utils::EpollEventReactor event_reactor_;
std::thread memif_worker_;
std::atomic_bool timer_set_;
utils::FdDeadlineTimer send_timer_;
utils::FdDeadlineTimer disconnect_timer_;
asio::io_service &io_service_;
asio::executor_work_guard<asio::io_context::executor_type> work_;
Details memif_connection_;
uint16_t tx_buf_counter_;
PacketRing input_buffer_;
bool is_reconnection_;
bool data_available_;
uint32_t memif_id_;
uint8_t memif_mode_;
std::string app_name_;
uint16_t transmission_index_;
utils::SpinLock write_msgs_lock_;
std::string socket_filename_;
std::size_t buffer_size_;
std::size_t log2_ring_size_;
std::size_t max_memif_bufs_;
};
} // end namespace core
} // end namespace transport
|
