BadVPN – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | /** |
2 | * @file |
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3 | * lwIP iPerf server implementation |
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4 | */ |
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5 | |||
6 | /** |
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7 | * @defgroup iperf Iperf server |
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8 | * @ingroup apps |
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9 | * |
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10 | * This is a simple performance measuring server to check your bandwith using |
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11 | * iPerf2 on a PC as client. |
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12 | * It is currently a minimal implementation providing an IPv4 TCP server only. |
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13 | * |
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14 | * @todo: implement UDP mode and IPv6 |
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15 | */ |
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16 | |||
17 | /* |
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18 | * Copyright (c) 2014 Simon Goldschmidt |
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19 | * All rights reserved. |
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20 | * |
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21 | * Redistribution and use in source and binary forms, with or without modification, |
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22 | * are permitted provided that the following conditions are met: |
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23 | * |
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24 | * 1. Redistributions of source code must retain the above copyright notice, |
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25 | * this list of conditions and the following disclaimer. |
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26 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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27 | * this list of conditions and the following disclaimer in the documentation |
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28 | * and/or other materials provided with the distribution. |
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29 | * 3. The name of the author may not be used to endorse or promote products |
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30 | * derived from this software without specific prior written permission. |
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31 | * |
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32 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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33 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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34 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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35 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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36 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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37 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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38 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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39 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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41 | * OF SUCH DAMAGE. |
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42 | * |
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43 | * This file is part of the lwIP TCP/IP stack. |
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44 | * |
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45 | * Author: Simon Goldschmidt |
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46 | */ |
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47 | |||
48 | #include "lwip/apps/lwiperf.h" |
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49 | |||
50 | #include "lwip/tcp.h" |
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51 | #include "lwip/sys.h" |
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52 | |||
53 | #include <string.h> |
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54 | |||
55 | /* Currently, only TCP-over-IPv4 is implemented (does iperf support IPv6 anyway?) */ |
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56 | #if LWIP_IPV4 && LWIP_TCP && LWIP_CALLBACK_API |
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57 | |||
58 | /** Specify the idle timeout (in seconds) after that the test fails */ |
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59 | #ifndef LWIPERF_TCP_MAX_IDLE_SEC |
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60 | #define LWIPERF_TCP_MAX_IDLE_SEC 10U |
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61 | #endif |
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62 | #if LWIPERF_TCP_MAX_IDLE_SEC > 255 |
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63 | #error LWIPERF_TCP_MAX_IDLE_SEC must fit into an u8_t |
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64 | #endif |
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65 | |||
66 | /* File internal memory allocation (struct lwiperf_*): this defaults to |
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67 | the heap */ |
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68 | #ifndef LWIPERF_ALLOC |
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69 | #define LWIPERF_ALLOC(type) mem_malloc(sizeof(type)) |
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70 | #define LWIPERF_FREE(type, item) mem_free(item) |
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71 | #endif |
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72 | |||
73 | /** If this is 1, check that received data has the correct format */ |
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74 | #ifndef LWIPERF_CHECK_RX_DATA |
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75 | #define LWIPERF_CHECK_RX_DATA 0 |
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76 | #endif |
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77 | |||
78 | /** This is the Iperf settings struct sent from the client */ |
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79 | typedef struct _lwiperf_settings { |
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80 | #define LWIPERF_FLAGS_ANSWER_TEST 0x80000000 |
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81 | #define LWIPERF_FLAGS_ANSWER_NOW 0x00000001 |
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82 | u32_t flags; |
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83 | u32_t num_threads; /* unused for now */ |
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84 | u32_t remote_port; |
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85 | u32_t buffer_len; /* unused for now */ |
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86 | u32_t win_band; /* TCP window / UDP rate: unused for now */ |
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87 | u32_t amount; /* pos. value: bytes?; neg. values: time (unit is 10ms: 1/100 second) */ |
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88 | } lwiperf_settings_t; |
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89 | |||
90 | /** Basic connection handle */ |
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91 | struct _lwiperf_state_base; |
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92 | typedef struct _lwiperf_state_base lwiperf_state_base_t; |
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93 | struct _lwiperf_state_base { |
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94 | /* 1=tcp, 0=udp */ |
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95 | u8_t tcp; |
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96 | /* 1=server, 0=client */ |
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97 | u8_t server; |
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98 | lwiperf_state_base_t *next; |
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99 | lwiperf_state_base_t *related_server_state; |
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100 | }; |
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101 | |||
102 | /** Connection handle for a TCP iperf session */ |
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103 | typedef struct _lwiperf_state_tcp { |
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104 | lwiperf_state_base_t base; |
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105 | struct tcp_pcb *server_pcb; |
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106 | struct tcp_pcb *conn_pcb; |
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107 | u32_t time_started; |
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108 | lwiperf_report_fn report_fn; |
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109 | void *report_arg; |
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110 | u8_t poll_count; |
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111 | u8_t next_num; |
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112 | u32_t bytes_transferred; |
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113 | lwiperf_settings_t settings; |
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114 | u8_t have_settings_buf; |
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115 | } lwiperf_state_tcp_t; |
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116 | |||
117 | /** List of active iperf sessions */ |
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118 | static lwiperf_state_base_t *lwiperf_all_connections; |
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119 | /** A const buffer to send from: we want to measure sending, not copying! */ |
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120 | static const u8_t lwiperf_txbuf_const[1600] = { |
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121 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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122 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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123 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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124 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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125 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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126 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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127 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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128 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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129 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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130 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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131 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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132 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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133 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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134 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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135 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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136 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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137 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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138 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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139 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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140 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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141 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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142 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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143 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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144 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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145 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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146 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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147 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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148 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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149 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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150 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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151 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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152 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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153 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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154 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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155 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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156 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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157 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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158 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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159 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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160 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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161 | }; |
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162 | |||
163 | static err_t lwiperf_tcp_poll(void *arg, struct tcp_pcb *tpcb); |
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164 | static void lwiperf_tcp_err(void *arg, err_t err); |
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165 | |||
166 | /** Add an iperf session to the 'active' list */ |
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167 | static void |
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168 | lwiperf_list_add(lwiperf_state_base_t *item) |
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169 | { |
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170 | if (lwiperf_all_connections == NULL) { |
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171 | lwiperf_all_connections = item; |
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172 | } else { |
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173 | item = lwiperf_all_connections; |
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174 | } |
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175 | } |
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176 | |||
177 | /** Remove an iperf session from the 'active' list */ |
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178 | static void |
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179 | lwiperf_list_remove(lwiperf_state_base_t *item) |
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180 | { |
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181 | lwiperf_state_base_t *prev = NULL; |
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182 | lwiperf_state_base_t *iter; |
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183 | for (iter = lwiperf_all_connections; iter != NULL; prev = iter, iter = iter->next) { |
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184 | if (iter == item) { |
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185 | if (prev == NULL) { |
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186 | lwiperf_all_connections = iter->next; |
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187 | } else { |
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188 | prev->next = item; |
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189 | } |
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190 | /* @debug: ensure this item is listed only once */ |
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191 | for (iter = iter->next; iter != NULL; iter = iter->next) { |
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192 | LWIP_ASSERT("duplicate entry", iter != item); |
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193 | } |
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194 | break; |
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195 | } |
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196 | } |
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197 | } |
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198 | |||
199 | /** Call the report function of an iperf tcp session */ |
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200 | static void |
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201 | lwip_tcp_conn_report(lwiperf_state_tcp_t *conn, enum lwiperf_report_type report_type) |
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202 | { |
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203 | if ((conn != NULL) && (conn->report_fn != NULL)) { |
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204 | u32_t now, duration_ms, bandwidth_kbitpsec; |
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205 | now = sys_now(); |
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206 | duration_ms = now - conn->time_started; |
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207 | if (duration_ms == 0) { |
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208 | bandwidth_kbitpsec = 0; |
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209 | } else { |
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210 | bandwidth_kbitpsec = (conn->bytes_transferred / duration_ms) * 8U; |
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211 | } |
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212 | conn->report_fn(conn->report_arg, report_type, |
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213 | &conn->conn_pcb->local_ip, conn->conn_pcb->local_port, |
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214 | &conn->conn_pcb->remote_ip, conn->conn_pcb->remote_port, |
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215 | conn->bytes_transferred, duration_ms, bandwidth_kbitpsec); |
||
216 | } |
||
217 | } |
||
218 | |||
219 | /** Close an iperf tcp session */ |
||
220 | static void |
||
221 | lwiperf_tcp_close(lwiperf_state_tcp_t *conn, enum lwiperf_report_type report_type) |
||
222 | { |
||
223 | err_t err; |
||
224 | |||
225 | lwip_tcp_conn_report(conn, report_type); |
||
226 | lwiperf_list_remove(&conn->base); |
||
227 | if (conn->conn_pcb != NULL) { |
||
228 | tcp_arg(conn->conn_pcb, NULL); |
||
229 | tcp_poll(conn->conn_pcb, NULL, 0); |
||
230 | tcp_sent(conn->conn_pcb, NULL); |
||
231 | tcp_recv(conn->conn_pcb, NULL); |
||
232 | tcp_err(conn->conn_pcb, NULL); |
||
233 | err = tcp_close(conn->conn_pcb); |
||
234 | if (err != ERR_OK) { |
||
235 | /* don't want to wait for free memory here... */ |
||
236 | tcp_abort(conn->conn_pcb); |
||
237 | } |
||
238 | } else { |
||
239 | /* no conn pcb, this is the server pcb */ |
||
240 | err = tcp_close(conn->server_pcb); |
||
241 | LWIP_ASSERT("error", err != ERR_OK); |
||
242 | } |
||
243 | LWIPERF_FREE(lwiperf_state_tcp_t, conn); |
||
244 | } |
||
245 | |||
246 | /** Try to send more data on an iperf tcp session */ |
||
247 | static err_t |
||
248 | lwiperf_tcp_client_send_more(lwiperf_state_tcp_t *conn) |
||
249 | { |
||
250 | int send_more; |
||
251 | err_t err; |
||
252 | u16_t txlen; |
||
253 | u16_t txlen_max; |
||
254 | void *txptr; |
||
255 | u8_t apiflags; |
||
256 | |||
257 | LWIP_ASSERT("conn invalid", (conn != NULL) && conn->base.tcp && (conn->base.server == 0)); |
||
258 | |||
259 | do { |
||
260 | send_more = 0; |
||
261 | if (conn->settings.amount & PP_HTONL(0x80000000)) { |
||
262 | /* this session is time-limited */ |
||
263 | u32_t now = sys_now(); |
||
264 | u32_t diff_ms = now - conn->time_started; |
||
265 | u32_t time = (u32_t) - (s32_t)lwip_htonl(conn->settings.amount); |
||
266 | u32_t time_ms = time * 10; |
||
267 | if (diff_ms >= time_ms) { |
||
268 | /* time specified by the client is over -> close the connection */ |
||
269 | lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT); |
||
270 | return ERR_OK; |
||
271 | } |
||
272 | } else { |
||
273 | /* this session is byte-limited */ |
||
274 | u32_t amount_bytes = lwip_htonl(conn->settings.amount); |
||
275 | /* @todo: this can send up to 1*MSS more than requested... */ |
||
276 | if (amount_bytes >= conn->bytes_transferred) { |
||
277 | /* all requested bytes transferred -> close the connection */ |
||
278 | lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT); |
||
279 | return ERR_OK; |
||
280 | } |
||
281 | } |
||
282 | |||
283 | if (conn->bytes_transferred < 24) { |
||
284 | /* transmit the settings a first time */ |
||
285 | txptr = &((u8_t *)&conn->settings)[conn->bytes_transferred]; |
||
286 | txlen_max = (u16_t)(24 - conn->bytes_transferred); |
||
287 | apiflags = TCP_WRITE_FLAG_COPY; |
||
288 | } else if (conn->bytes_transferred < 48) { |
||
289 | /* transmit the settings a second time */ |
||
290 | txptr = &((u8_t *)&conn->settings)[conn->bytes_transferred - 24]; |
||
291 | txlen_max = (u16_t)(48 - conn->bytes_transferred); |
||
292 | apiflags = TCP_WRITE_FLAG_COPY | TCP_WRITE_FLAG_MORE; |
||
293 | send_more = 1; |
||
294 | } else { |
||
295 | /* transmit data */ |
||
296 | /* @todo: every x bytes, transmit the settings again */ |
||
297 | txptr = LWIP_CONST_CAST(void *, &lwiperf_txbuf_const[conn->bytes_transferred % 10]); |
||
298 | txlen_max = TCP_MSS; |
||
299 | if (conn->bytes_transferred == 48) { /* @todo: fix this for intermediate settings, too */ |
||
300 | txlen_max = TCP_MSS - 24; |
||
301 | } |
||
302 | apiflags = 0; /* no copying needed */ |
||
303 | send_more = 1; |
||
304 | } |
||
305 | txlen = txlen_max; |
||
306 | do { |
||
307 | err = tcp_write(conn->conn_pcb, txptr, txlen, apiflags); |
||
308 | if (err == ERR_MEM) { |
||
309 | txlen /= 2; |
||
310 | } |
||
311 | } while ((err == ERR_MEM) && (txlen >= (TCP_MSS / 2))); |
||
312 | |||
313 | if (err == ERR_OK) { |
||
314 | conn->bytes_transferred += txlen; |
||
315 | } else { |
||
316 | send_more = 0; |
||
317 | } |
||
318 | } while (send_more); |
||
319 | |||
320 | tcp_output(conn->conn_pcb); |
||
321 | return ERR_OK; |
||
322 | } |
||
323 | |||
324 | /** TCP sent callback, try to send more data */ |
||
325 | static err_t |
||
326 | lwiperf_tcp_client_sent(void *arg, struct tcp_pcb *tpcb, u16_t len) |
||
327 | { |
||
328 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg; |
||
329 | /* @todo: check 'len' (e.g. to time ACK of all data)? for now, we just send more... */ |
||
330 | LWIP_ASSERT("invalid conn", conn->conn_pcb == tpcb); |
||
331 | LWIP_UNUSED_ARG(tpcb); |
||
332 | LWIP_UNUSED_ARG(len); |
||
333 | |||
334 | conn->poll_count = 0; |
||
335 | |||
336 | return lwiperf_tcp_client_send_more(conn); |
||
337 | } |
||
338 | |||
339 | /** TCP connected callback (active connection), send data now */ |
||
340 | static err_t |
||
341 | lwiperf_tcp_client_connected(void *arg, struct tcp_pcb *tpcb, err_t err) |
||
342 | { |
||
343 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg; |
||
344 | LWIP_ASSERT("invalid conn", conn->conn_pcb == tpcb); |
||
345 | LWIP_UNUSED_ARG(tpcb); |
||
346 | if (err != ERR_OK) { |
||
347 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE); |
||
348 | return ERR_OK; |
||
349 | } |
||
350 | conn->poll_count = 0; |
||
351 | conn->time_started = sys_now(); |
||
352 | return lwiperf_tcp_client_send_more(conn); |
||
353 | } |
||
354 | |||
355 | /** Start TCP connection back to the client (either parallel or after the |
||
356 | * receive test has finished. |
||
357 | */ |
||
358 | static err_t |
||
359 | lwiperf_tx_start(lwiperf_state_tcp_t *conn) |
||
360 | { |
||
361 | err_t err; |
||
362 | lwiperf_state_tcp_t *client_conn; |
||
363 | struct tcp_pcb *newpcb; |
||
364 | ip_addr_t remote_addr; |
||
365 | u16_t remote_port; |
||
366 | |||
367 | client_conn = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t); |
||
368 | if (client_conn == NULL) { |
||
369 | return ERR_MEM; |
||
370 | } |
||
371 | newpcb = tcp_new(); |
||
372 | if (newpcb == NULL) { |
||
373 | LWIPERF_FREE(lwiperf_state_tcp_t, client_conn); |
||
374 | return ERR_MEM; |
||
375 | } |
||
376 | |||
377 | MEMCPY(client_conn, conn, sizeof(lwiperf_state_tcp_t)); |
||
378 | client_conn->base.server = 0; |
||
379 | client_conn->server_pcb = NULL; |
||
380 | client_conn->conn_pcb = newpcb; |
||
381 | client_conn->time_started = sys_now(); /* @todo: set this again on 'connected' */ |
||
382 | client_conn->poll_count = 0; |
||
383 | client_conn->next_num = 4; /* initial nr is '4' since the header has 24 byte */ |
||
384 | client_conn->bytes_transferred = 0; |
||
385 | client_conn->settings.flags = 0; /* prevent the remote side starting back as client again */ |
||
386 | |||
387 | tcp_arg(newpcb, client_conn); |
||
388 | tcp_sent(newpcb, lwiperf_tcp_client_sent); |
||
389 | tcp_poll(newpcb, lwiperf_tcp_poll, 2U); |
||
390 | tcp_err(newpcb, lwiperf_tcp_err); |
||
391 | |||
392 | ip_addr_copy(remote_addr, conn->conn_pcb->remote_ip); |
||
393 | remote_port = (u16_t)lwip_htonl(client_conn->settings.remote_port); |
||
394 | |||
395 | err = tcp_connect(newpcb, &remote_addr, remote_port, lwiperf_tcp_client_connected); |
||
396 | if (err != ERR_OK) { |
||
397 | lwiperf_tcp_close(client_conn, LWIPERF_TCP_ABORTED_LOCAL); |
||
398 | return err; |
||
399 | } |
||
400 | lwiperf_list_add(&client_conn->base); |
||
401 | return ERR_OK; |
||
402 | } |
||
403 | |||
404 | /** Receive data on an iperf tcp session */ |
||
405 | static err_t |
||
406 | lwiperf_tcp_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err) |
||
407 | { |
||
408 | u8_t tmp; |
||
409 | u16_t tot_len; |
||
410 | u32_t packet_idx; |
||
411 | struct pbuf *q; |
||
412 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg; |
||
413 | |||
414 | LWIP_ASSERT("pcb mismatch", conn->conn_pcb == tpcb); |
||
415 | LWIP_UNUSED_ARG(tpcb); |
||
416 | |||
417 | if (err != ERR_OK) { |
||
418 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE); |
||
419 | return ERR_OK; |
||
420 | } |
||
421 | if (p == NULL) { |
||
422 | /* connection closed -> test done */ |
||
423 | if ((conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST | LWIPERF_FLAGS_ANSWER_NOW)) == |
||
424 | PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) { |
||
425 | /* client requested transmission after end of test */ |
||
426 | lwiperf_tx_start(conn); |
||
427 | } |
||
428 | lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_SERVER); |
||
429 | return ERR_OK; |
||
430 | } |
||
431 | tot_len = p->tot_len; |
||
432 | |||
433 | conn->poll_count = 0; |
||
434 | |||
435 | if ((!conn->have_settings_buf) || ((conn->bytes_transferred - 24) % (1024 * 128) == 0)) { |
||
436 | /* wait for 24-byte header */ |
||
437 | if (p->tot_len < sizeof(lwiperf_settings_t)) { |
||
438 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR); |
||
439 | pbuf_free(p); |
||
440 | return ERR_VAL; |
||
441 | } |
||
442 | if (!conn->have_settings_buf) { |
||
443 | if (pbuf_copy_partial(p, &conn->settings, sizeof(lwiperf_settings_t), 0) != sizeof(lwiperf_settings_t)) { |
||
444 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL); |
||
445 | pbuf_free(p); |
||
446 | return ERR_VAL; |
||
447 | } |
||
448 | conn->have_settings_buf = 1; |
||
449 | if ((conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST | LWIPERF_FLAGS_ANSWER_NOW)) == |
||
450 | PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST | LWIPERF_FLAGS_ANSWER_NOW)) { |
||
451 | /* client requested parallel transmission test */ |
||
452 | err_t err2 = lwiperf_tx_start(conn); |
||
453 | if (err2 != ERR_OK) { |
||
454 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_TXERROR); |
||
455 | pbuf_free(p); |
||
456 | return err2; |
||
457 | } |
||
458 | } |
||
459 | } else { |
||
460 | if (pbuf_memcmp(p, 0, &conn->settings, sizeof(lwiperf_settings_t)) != 0) { |
||
461 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR); |
||
462 | pbuf_free(p); |
||
463 | return ERR_VAL; |
||
464 | } |
||
465 | } |
||
466 | conn->bytes_transferred += sizeof(lwiperf_settings_t); |
||
467 | if (conn->bytes_transferred <= 24) { |
||
468 | conn->time_started = sys_now(); |
||
469 | tcp_recved(tpcb, p->tot_len); |
||
470 | pbuf_free(p); |
||
471 | return ERR_OK; |
||
472 | } |
||
473 | conn->next_num = 4; /* 24 bytes received... */ |
||
474 | tmp = pbuf_remove_header(p, 24); |
||
475 | LWIP_ASSERT("pbuf_remove_header failed", tmp == 0); |
||
476 | } |
||
477 | |||
478 | packet_idx = 0; |
||
479 | for (q = p; q != NULL; q = q->next) { |
||
480 | #if LWIPERF_CHECK_RX_DATA |
||
481 | const u8_t *payload = (const u8_t *)q->payload; |
||
482 | u16_t i; |
||
483 | for (i = 0; i < q->len; i++) { |
||
484 | u8_t val = payload[i]; |
||
485 | u8_t num = val - '0'; |
||
486 | if (num == conn->next_num) { |
||
487 | conn->next_num++; |
||
488 | if (conn->next_num == 10) { |
||
489 | conn->next_num = 0; |
||
490 | } |
||
491 | } else { |
||
492 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR); |
||
493 | pbuf_free(p); |
||
494 | return ERR_VAL; |
||
495 | } |
||
496 | } |
||
497 | #endif |
||
498 | packet_idx += q->len; |
||
499 | } |
||
500 | LWIP_ASSERT("count mismatch", packet_idx == p->tot_len); |
||
501 | conn->bytes_transferred += packet_idx; |
||
502 | tcp_recved(tpcb, tot_len); |
||
503 | pbuf_free(p); |
||
504 | return ERR_OK; |
||
505 | } |
||
506 | |||
507 | /** Error callback, iperf tcp session aborted */ |
||
508 | static void |
||
509 | lwiperf_tcp_err(void *arg, err_t err) |
||
510 | { |
||
511 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg; |
||
512 | LWIP_UNUSED_ARG(err); |
||
513 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE); |
||
514 | } |
||
515 | |||
516 | /** TCP poll callback, try to send more data */ |
||
517 | static err_t |
||
518 | lwiperf_tcp_poll(void *arg, struct tcp_pcb *tpcb) |
||
519 | { |
||
520 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg; |
||
521 | LWIP_ASSERT("pcb mismatch", conn->conn_pcb == tpcb); |
||
522 | LWIP_UNUSED_ARG(tpcb); |
||
523 | if (++conn->poll_count >= LWIPERF_TCP_MAX_IDLE_SEC) { |
||
524 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL); |
||
525 | return ERR_OK; /* lwiperf_tcp_close frees conn */ |
||
526 | } |
||
527 | |||
528 | if (!conn->base.server) { |
||
529 | lwiperf_tcp_client_send_more(conn); |
||
530 | } |
||
531 | |||
532 | return ERR_OK; |
||
533 | } |
||
534 | |||
535 | /** This is called when a new client connects for an iperf tcp session */ |
||
536 | static err_t |
||
537 | lwiperf_tcp_accept(void *arg, struct tcp_pcb *newpcb, err_t err) |
||
538 | { |
||
539 | lwiperf_state_tcp_t *s, *conn; |
||
540 | if ((err != ERR_OK) || (newpcb == NULL) || (arg == NULL)) { |
||
541 | return ERR_VAL; |
||
542 | } |
||
543 | |||
544 | s = (lwiperf_state_tcp_t *)arg; |
||
545 | conn = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t); |
||
546 | if (conn == NULL) { |
||
547 | return ERR_MEM; |
||
548 | } |
||
549 | memset(conn, 0, sizeof(lwiperf_state_tcp_t)); |
||
550 | conn->base.tcp = 1; |
||
551 | conn->base.server = 1; |
||
552 | conn->base.related_server_state = &s->base; |
||
553 | conn->server_pcb = s->server_pcb; |
||
554 | conn->conn_pcb = newpcb; |
||
555 | conn->time_started = sys_now(); |
||
556 | conn->report_fn = s->report_fn; |
||
557 | conn->report_arg = s->report_arg; |
||
558 | |||
559 | /* setup the tcp rx connection */ |
||
560 | tcp_arg(newpcb, conn); |
||
561 | tcp_recv(newpcb, lwiperf_tcp_recv); |
||
562 | tcp_poll(newpcb, lwiperf_tcp_poll, 2U); |
||
563 | tcp_err(conn->conn_pcb, lwiperf_tcp_err); |
||
564 | |||
565 | lwiperf_list_add(&conn->base); |
||
566 | return ERR_OK; |
||
567 | } |
||
568 | |||
569 | /** |
||
570 | * @ingroup iperf |
||
571 | * Start a TCP iperf server on the default TCP port (5001) and listen for |
||
572 | * incoming connections from iperf clients. |
||
573 | * |
||
574 | * @returns a connection handle that can be used to abort the server |
||
575 | * by calling @ref lwiperf_abort() |
||
576 | */ |
||
577 | void * |
||
578 | lwiperf_start_tcp_server_default(lwiperf_report_fn report_fn, void *report_arg) |
||
579 | { |
||
580 | return lwiperf_start_tcp_server(IP_ADDR_ANY, LWIPERF_TCP_PORT_DEFAULT, |
||
581 | report_fn, report_arg); |
||
582 | } |
||
583 | |||
584 | /** |
||
585 | * @ingroup iperf |
||
586 | * Start a TCP iperf server on a specific IP address and port and listen for |
||
587 | * incoming connections from iperf clients. |
||
588 | * |
||
589 | * @returns a connection handle that can be used to abort the server |
||
590 | * by calling @ref lwiperf_abort() |
||
591 | */ |
||
592 | void * |
||
593 | lwiperf_start_tcp_server(const ip_addr_t *local_addr, u16_t local_port, |
||
594 | lwiperf_report_fn report_fn, void *report_arg) |
||
595 | { |
||
596 | err_t err; |
||
597 | struct tcp_pcb *pcb; |
||
598 | lwiperf_state_tcp_t *s; |
||
599 | |||
600 | if (local_addr == NULL) { |
||
601 | return NULL; |
||
602 | } |
||
603 | |||
604 | s = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t); |
||
605 | if (s == NULL) { |
||
606 | return NULL; |
||
607 | } |
||
608 | memset(s, 0, sizeof(lwiperf_state_tcp_t)); |
||
609 | s->base.tcp = 1; |
||
610 | s->base.server = 1; |
||
611 | s->report_fn = report_fn; |
||
612 | s->report_arg = report_arg; |
||
613 | |||
614 | pcb = tcp_new(); |
||
615 | if (pcb != NULL) { |
||
616 | err = tcp_bind(pcb, local_addr, local_port); |
||
617 | if (err == ERR_OK) { |
||
618 | s->server_pcb = tcp_listen_with_backlog(pcb, 1); |
||
619 | } |
||
620 | } |
||
621 | if (s->server_pcb == NULL) { |
||
622 | if (pcb != NULL) { |
||
623 | tcp_close(pcb); |
||
624 | } |
||
625 | LWIPERF_FREE(lwiperf_state_tcp_t, s); |
||
626 | return NULL; |
||
627 | } |
||
628 | pcb = NULL; |
||
629 | |||
630 | tcp_arg(s->server_pcb, s); |
||
631 | tcp_accept(s->server_pcb, lwiperf_tcp_accept); |
||
632 | |||
633 | lwiperf_list_add(&s->base); |
||
634 | return s; |
||
635 | } |
||
636 | |||
637 | /** |
||
638 | * @ingroup iperf |
||
639 | * Abort an iperf session (handle returned by lwiperf_start_tcp_server*()) |
||
640 | */ |
||
641 | void |
||
642 | lwiperf_abort(void *lwiperf_session) |
||
643 | { |
||
644 | lwiperf_state_base_t *i, *dealloc, *last = NULL; |
||
645 | |||
646 | for (i = lwiperf_all_connections; i != NULL; ) { |
||
647 | if ((i == lwiperf_session) || (i->related_server_state == lwiperf_session)) { |
||
648 | dealloc = i; |
||
649 | i = i->next; |
||
650 | if (last != NULL) { |
||
651 | last->next = i; |
||
652 | } |
||
653 | LWIPERF_FREE(lwiperf_state_tcp_t, dealloc); /* @todo: type? */ |
||
654 | } else { |
||
655 | last = i; |
||
656 | i = i->next; |
||
657 | } |
||
658 | } |
||
659 | } |
||
660 | |||
661 | #endif /* LWIP_IPV4 && LWIP_TCP && LWIP_CALLBACK_API */ |