1 | /**
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2 | * @file
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3 | * lwIP iPerf server implementation
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4 | */
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5 |
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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 client/server to check your bandwith using
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11 | * iPerf2 on a PC as server/client.
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12 | * It is currently a minimal implementation providing a TCP client/server only.
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13 | *
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14 | * @todo:
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15 | * - implement UDP mode
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16 | * - protect combined sessions handling (via 'related_master_state') against reallocation
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17 | * (this is a pointer address, currently, so if the same memory is allocated again,
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18 | * session pairs (tx/rx) can be confused on reallocation)
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19 | */
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20 |
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21 | /*
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22 | * Copyright (c) 2014 Simon Goldschmidt
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23 | * All rights reserved.
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24 | *
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25 | * Redistribution and use in source and binary forms, with or without modification,
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26 | * are permitted provided that the following conditions are met:
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27 | *
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28 | * 1. Redistributions of source code must retain the above copyright notice,
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29 | * this list of conditions and the following disclaimer.
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30 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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31 | * this list of conditions and the following disclaimer in the documentation
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32 | * and/or other materials provided with the distribution.
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33 | * 3. The name of the author may not be used to endorse or promote products
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34 | * derived from this software without specific prior written permission.
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35 | *
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36 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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37 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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38 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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39 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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40 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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41 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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42 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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43 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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44 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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45 | * OF SUCH DAMAGE.
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46 | *
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47 | * This file is part of the lwIP TCP/IP stack.
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48 | *
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49 | * Author: Simon Goldschmidt
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50 | */
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51 |
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52 | #include "lwip/apps/lwiperf.h"
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53 |
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54 | #include "lwip/tcp.h"
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55 | #include "lwip/sys.h"
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56 |
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57 | #include <string.h>
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58 |
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59 | /* Currently, only TCP is implemented */
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60 | #if LWIP_TCP && LWIP_CALLBACK_API
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61 |
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62 | /** Specify the idle timeout (in seconds) after that the test fails */
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63 | #ifndef LWIPERF_TCP_MAX_IDLE_SEC
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64 | #define LWIPERF_TCP_MAX_IDLE_SEC 10U
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65 | #endif
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66 | #if LWIPERF_TCP_MAX_IDLE_SEC > 255
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67 | #error LWIPERF_TCP_MAX_IDLE_SEC must fit into an u8_t
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68 | #endif
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69 |
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70 | /** Change this if you don't want to lwiperf to listen to any IP version */
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71 | #ifndef LWIPERF_SERVER_IP_TYPE
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72 | #define LWIPERF_SERVER_IP_TYPE IPADDR_TYPE_ANY
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73 | #endif
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74 |
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75 | /* File internal memory allocation (struct lwiperf_*): this defaults to
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76 | the heap */
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77 | #ifndef LWIPERF_ALLOC
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78 | #define LWIPERF_ALLOC(type) mem_malloc(sizeof(type))
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79 | #define LWIPERF_FREE(type, item) mem_free(item)
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80 | #endif
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81 |
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82 | /** If this is 1, check that received data has the correct format */
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83 | #ifndef LWIPERF_CHECK_RX_DATA
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84 | #define LWIPERF_CHECK_RX_DATA 0
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85 | #endif
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86 |
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87 | /** This is the Iperf settings struct sent from the client */
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88 | typedef struct _lwiperf_settings {
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89 | #define LWIPERF_FLAGS_ANSWER_TEST 0x80000000
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90 | #define LWIPERF_FLAGS_ANSWER_NOW 0x00000001
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91 | u32_t flags;
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92 | u32_t num_threads; /* unused for now */
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93 | u32_t remote_port;
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94 | u32_t buffer_len; /* unused for now */
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95 | u32_t win_band; /* TCP window / UDP rate: unused for now */
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96 | u32_t amount; /* pos. value: bytes?; neg. values: time (unit is 10ms: 1/100 second) */
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97 | } lwiperf_settings_t;
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98 |
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99 | /** Basic connection handle */
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100 | struct _lwiperf_state_base;
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101 | typedef struct _lwiperf_state_base lwiperf_state_base_t;
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102 | struct _lwiperf_state_base {
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103 | /* linked list */
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104 | lwiperf_state_base_t *next;
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105 | /* 1=tcp, 0=udp */
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106 | u8_t tcp;
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107 | /* 1=server, 0=client */
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108 | u8_t server;
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109 | /* master state used to abort sessions (e.g. listener, main client) */
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110 | lwiperf_state_base_t *related_master_state;
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111 | };
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112 |
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113 | /** Connection handle for a TCP iperf session */
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114 | typedef struct _lwiperf_state_tcp {
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115 | lwiperf_state_base_t base;
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116 | struct tcp_pcb *server_pcb;
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117 | struct tcp_pcb *conn_pcb;
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118 | u32_t time_started;
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119 | lwiperf_report_fn report_fn;
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120 | void *report_arg;
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121 | u8_t poll_count;
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122 | u8_t next_num;
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123 | /* 1=start server when client is closed */
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124 | u8_t client_tradeoff_mode;
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125 | u32_t bytes_transferred;
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126 | lwiperf_settings_t settings;
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127 | u8_t have_settings_buf;
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128 | u8_t specific_remote;
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129 | ip_addr_t remote_addr;
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130 | } lwiperf_state_tcp_t;
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131 |
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132 | /** List of active iperf sessions */
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133 | static lwiperf_state_base_t *lwiperf_all_connections;
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134 | /** A const buffer to send from: we want to measure sending, not copying! */
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135 | static const u8_t lwiperf_txbuf_const[1600] = {
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176 | };
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177 |
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178 | static err_t lwiperf_tcp_poll(void *arg, struct tcp_pcb *tpcb);
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179 | static void lwiperf_tcp_err(void *arg, err_t err);
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180 | static err_t lwiperf_start_tcp_server_impl(const ip_addr_t *local_addr, u16_t local_port,
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181 | lwiperf_report_fn report_fn, void *report_arg,
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182 | lwiperf_state_base_t *related_master_state, lwiperf_state_tcp_t **state);
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183 |
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184 |
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185 | /** Add an iperf session to the 'active' list */
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186 | static void
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187 | lwiperf_list_add(lwiperf_state_base_t *item)
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188 | {
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189 | item->next = lwiperf_all_connections;
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190 | lwiperf_all_connections = item;
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191 | }
|
---|
192 |
|
---|
193 | /** Remove an iperf session from the 'active' list */
|
---|
194 | static void
|
---|
195 | lwiperf_list_remove(lwiperf_state_base_t *item)
|
---|
196 | {
|
---|
197 | lwiperf_state_base_t *prev = NULL;
|
---|
198 | lwiperf_state_base_t *iter;
|
---|
199 | for (iter = lwiperf_all_connections; iter != NULL; prev = iter, iter = iter->next) {
|
---|
200 | if (iter == item) {
|
---|
201 | if (prev == NULL) {
|
---|
202 | lwiperf_all_connections = iter->next;
|
---|
203 | } else {
|
---|
204 | prev->next = iter->next;
|
---|
205 | }
|
---|
206 | /* @debug: ensure this item is listed only once */
|
---|
207 | for (iter = iter->next; iter != NULL; iter = iter->next) {
|
---|
208 | LWIP_ASSERT("duplicate entry", iter != item);
|
---|
209 | }
|
---|
210 | break;
|
---|
211 | }
|
---|
212 | }
|
---|
213 | }
|
---|
214 |
|
---|
215 | static lwiperf_state_base_t *
|
---|
216 | lwiperf_list_find(lwiperf_state_base_t *item)
|
---|
217 | {
|
---|
218 | lwiperf_state_base_t *iter;
|
---|
219 | for (iter = lwiperf_all_connections; iter != NULL; iter = iter->next) {
|
---|
220 | if (iter == item) {
|
---|
221 | return item;
|
---|
222 | }
|
---|
223 | }
|
---|
224 | return NULL;
|
---|
225 | }
|
---|
226 |
|
---|
227 | /** Call the report function of an iperf tcp session */
|
---|
228 | static void
|
---|
229 | lwip_tcp_conn_report(lwiperf_state_tcp_t *conn, enum lwiperf_report_type report_type)
|
---|
230 | {
|
---|
231 | if ((conn != NULL) && (conn->report_fn != NULL)) {
|
---|
232 | u32_t now, duration_ms, bandwidth_kbitpsec;
|
---|
233 | now = sys_now();
|
---|
234 | duration_ms = now - conn->time_started;
|
---|
235 | if (duration_ms == 0) {
|
---|
236 | bandwidth_kbitpsec = 0;
|
---|
237 | } else {
|
---|
238 | bandwidth_kbitpsec = (conn->bytes_transferred / duration_ms) * 8U;
|
---|
239 | }
|
---|
240 | conn->report_fn(conn->report_arg, report_type,
|
---|
241 | &conn->conn_pcb->local_ip, conn->conn_pcb->local_port,
|
---|
242 | &conn->conn_pcb->remote_ip, conn->conn_pcb->remote_port,
|
---|
243 | conn->bytes_transferred, duration_ms, bandwidth_kbitpsec);
|
---|
244 | }
|
---|
245 | }
|
---|
246 |
|
---|
247 | /** Close an iperf tcp session */
|
---|
248 | static void
|
---|
249 | lwiperf_tcp_close(lwiperf_state_tcp_t *conn, enum lwiperf_report_type report_type)
|
---|
250 | {
|
---|
251 | err_t err;
|
---|
252 |
|
---|
253 | lwiperf_list_remove(&conn->base);
|
---|
254 | lwip_tcp_conn_report(conn, report_type);
|
---|
255 | if (conn->conn_pcb != NULL) {
|
---|
256 | tcp_arg(conn->conn_pcb, NULL);
|
---|
257 | tcp_poll(conn->conn_pcb, NULL, 0);
|
---|
258 | tcp_sent(conn->conn_pcb, NULL);
|
---|
259 | tcp_recv(conn->conn_pcb, NULL);
|
---|
260 | tcp_err(conn->conn_pcb, NULL);
|
---|
261 | err = tcp_close(conn->conn_pcb);
|
---|
262 | if (err != ERR_OK) {
|
---|
263 | /* don't want to wait for free memory here... */
|
---|
264 | tcp_abort(conn->conn_pcb);
|
---|
265 | }
|
---|
266 | } else {
|
---|
267 | /* no conn pcb, this is the listener pcb */
|
---|
268 | err = tcp_close(conn->server_pcb);
|
---|
269 | LWIP_ASSERT("error", err == ERR_OK);
|
---|
270 | }
|
---|
271 | LWIPERF_FREE(lwiperf_state_tcp_t, conn);
|
---|
272 | }
|
---|
273 |
|
---|
274 | /** Try to send more data on an iperf tcp session */
|
---|
275 | static err_t
|
---|
276 | lwiperf_tcp_client_send_more(lwiperf_state_tcp_t *conn)
|
---|
277 | {
|
---|
278 | int send_more;
|
---|
279 | err_t err;
|
---|
280 | u16_t txlen;
|
---|
281 | u16_t txlen_max;
|
---|
282 | void *txptr;
|
---|
283 | u8_t apiflags;
|
---|
284 |
|
---|
285 | LWIP_ASSERT("conn invalid", (conn != NULL) && conn->base.tcp && (conn->base.server == 0));
|
---|
286 |
|
---|
287 | do {
|
---|
288 | send_more = 0;
|
---|
289 | if (conn->settings.amount & PP_HTONL(0x80000000)) {
|
---|
290 | /* this session is time-limited */
|
---|
291 | u32_t now = sys_now();
|
---|
292 | u32_t diff_ms = now - conn->time_started;
|
---|
293 | u32_t time = (u32_t) - (s32_t)lwip_htonl(conn->settings.amount);
|
---|
294 | u32_t time_ms = time * 10;
|
---|
295 | if (diff_ms >= time_ms) {
|
---|
296 | /* time specified by the client is over -> close the connection */
|
---|
297 | lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT);
|
---|
298 | return ERR_OK;
|
---|
299 | }
|
---|
300 | } else {
|
---|
301 | /* this session is byte-limited */
|
---|
302 | u32_t amount_bytes = lwip_htonl(conn->settings.amount);
|
---|
303 | /* @todo: this can send up to 1*MSS more than requested... */
|
---|
304 | if (amount_bytes >= conn->bytes_transferred) {
|
---|
305 | /* all requested bytes transferred -> close the connection */
|
---|
306 | lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT);
|
---|
307 | return ERR_OK;
|
---|
308 | }
|
---|
309 | }
|
---|
310 |
|
---|
311 | if (conn->bytes_transferred < 24) {
|
---|
312 | /* transmit the settings a first time */
|
---|
313 | txptr = &((u8_t *)&conn->settings)[conn->bytes_transferred];
|
---|
314 | txlen_max = (u16_t)(24 - conn->bytes_transferred);
|
---|
315 | apiflags = TCP_WRITE_FLAG_COPY;
|
---|
316 | } else if (conn->bytes_transferred < 48) {
|
---|
317 | /* transmit the settings a second time */
|
---|
318 | txptr = &((u8_t *)&conn->settings)[conn->bytes_transferred - 24];
|
---|
319 | txlen_max = (u16_t)(48 - conn->bytes_transferred);
|
---|
320 | apiflags = TCP_WRITE_FLAG_COPY | TCP_WRITE_FLAG_MORE;
|
---|
321 | send_more = 1;
|
---|
322 | } else {
|
---|
323 | /* transmit data */
|
---|
324 | /* @todo: every x bytes, transmit the settings again */
|
---|
325 | txptr = LWIP_CONST_CAST(void *, &lwiperf_txbuf_const[conn->bytes_transferred % 10]);
|
---|
326 | txlen_max = TCP_MSS;
|
---|
327 | if (conn->bytes_transferred == 48) { /* @todo: fix this for intermediate settings, too */
|
---|
328 | txlen_max = TCP_MSS - 24;
|
---|
329 | }
|
---|
330 | apiflags = 0; /* no copying needed */
|
---|
331 | send_more = 1;
|
---|
332 | }
|
---|
333 | txlen = txlen_max;
|
---|
334 | do {
|
---|
335 | err = tcp_write(conn->conn_pcb, txptr, txlen, apiflags);
|
---|
336 | if (err == ERR_MEM) {
|
---|
337 | txlen /= 2;
|
---|
338 | }
|
---|
339 | } while ((err == ERR_MEM) && (txlen >= (TCP_MSS / 2)));
|
---|
340 |
|
---|
341 | if (err == ERR_OK) {
|
---|
342 | conn->bytes_transferred += txlen;
|
---|
343 | } else {
|
---|
344 | send_more = 0;
|
---|
345 | }
|
---|
346 | } while (send_more);
|
---|
347 |
|
---|
348 | tcp_output(conn->conn_pcb);
|
---|
349 | return ERR_OK;
|
---|
350 | }
|
---|
351 |
|
---|
352 | /** TCP sent callback, try to send more data */
|
---|
353 | static err_t
|
---|
354 | lwiperf_tcp_client_sent(void *arg, struct tcp_pcb *tpcb, u16_t len)
|
---|
355 | {
|
---|
356 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
---|
357 | /* @todo: check 'len' (e.g. to time ACK of all data)? for now, we just send more... */
|
---|
358 | LWIP_ASSERT("invalid conn", conn->conn_pcb == tpcb);
|
---|
359 | LWIP_UNUSED_ARG(tpcb);
|
---|
360 | LWIP_UNUSED_ARG(len);
|
---|
361 |
|
---|
362 | conn->poll_count = 0;
|
---|
363 |
|
---|
364 | return lwiperf_tcp_client_send_more(conn);
|
---|
365 | }
|
---|
366 |
|
---|
367 | /** TCP connected callback (active connection), send data now */
|
---|
368 | static err_t
|
---|
369 | lwiperf_tcp_client_connected(void *arg, struct tcp_pcb *tpcb, err_t err)
|
---|
370 | {
|
---|
371 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
---|
372 | LWIP_ASSERT("invalid conn", conn->conn_pcb == tpcb);
|
---|
373 | LWIP_UNUSED_ARG(tpcb);
|
---|
374 | if (err != ERR_OK) {
|
---|
375 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE);
|
---|
376 | return ERR_OK;
|
---|
377 | }
|
---|
378 | conn->poll_count = 0;
|
---|
379 | conn->time_started = sys_now();
|
---|
380 | return lwiperf_tcp_client_send_more(conn);
|
---|
381 | }
|
---|
382 |
|
---|
383 | /** Start TCP connection back to the client (either parallel or after the
|
---|
384 | * receive test has finished.
|
---|
385 | */
|
---|
386 | static err_t
|
---|
387 | lwiperf_tx_start_impl(const ip_addr_t *remote_ip, u16_t remote_port, lwiperf_settings_t *settings, lwiperf_report_fn report_fn,
|
---|
388 | void *report_arg, lwiperf_state_base_t *related_master_state, lwiperf_state_tcp_t **new_conn)
|
---|
389 | {
|
---|
390 | err_t err;
|
---|
391 | lwiperf_state_tcp_t *client_conn;
|
---|
392 | struct tcp_pcb *newpcb;
|
---|
393 | ip_addr_t remote_addr;
|
---|
394 |
|
---|
395 | LWIP_ASSERT("remote_ip != NULL", remote_ip != NULL);
|
---|
396 | LWIP_ASSERT("remote_ip != NULL", settings != NULL);
|
---|
397 | LWIP_ASSERT("new_conn != NULL", new_conn != NULL);
|
---|
398 | *new_conn = NULL;
|
---|
399 |
|
---|
400 | client_conn = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t);
|
---|
401 | if (client_conn == NULL) {
|
---|
402 | return ERR_MEM;
|
---|
403 | }
|
---|
404 | newpcb = tcp_new_ip_type(IP_GET_TYPE(remote_ip));
|
---|
405 | if (newpcb == NULL) {
|
---|
406 | LWIPERF_FREE(lwiperf_state_tcp_t, client_conn);
|
---|
407 | return ERR_MEM;
|
---|
408 | }
|
---|
409 | memset(client_conn, 0, sizeof(lwiperf_state_tcp_t));
|
---|
410 | client_conn->base.tcp = 1;
|
---|
411 | client_conn->base.related_master_state = related_master_state;
|
---|
412 | client_conn->conn_pcb = newpcb;
|
---|
413 | client_conn->time_started = sys_now(); /* @todo: set this again on 'connected' */
|
---|
414 | client_conn->report_fn = report_fn;
|
---|
415 | client_conn->report_arg = report_arg;
|
---|
416 | client_conn->next_num = 4; /* initial nr is '4' since the header has 24 byte */
|
---|
417 | client_conn->bytes_transferred = 0;
|
---|
418 | memcpy(&client_conn->settings, settings, sizeof(*settings));
|
---|
419 | client_conn->have_settings_buf = 1;
|
---|
420 |
|
---|
421 | tcp_arg(newpcb, client_conn);
|
---|
422 | tcp_sent(newpcb, lwiperf_tcp_client_sent);
|
---|
423 | tcp_poll(newpcb, lwiperf_tcp_poll, 2U);
|
---|
424 | tcp_err(newpcb, lwiperf_tcp_err);
|
---|
425 |
|
---|
426 | ip_addr_copy(remote_addr, *remote_ip);
|
---|
427 |
|
---|
428 | err = tcp_connect(newpcb, &remote_addr, remote_port, lwiperf_tcp_client_connected);
|
---|
429 | if (err != ERR_OK) {
|
---|
430 | lwiperf_tcp_close(client_conn, LWIPERF_TCP_ABORTED_LOCAL);
|
---|
431 | return err;
|
---|
432 | }
|
---|
433 | lwiperf_list_add(&client_conn->base);
|
---|
434 | *new_conn = client_conn;
|
---|
435 | return ERR_OK;
|
---|
436 | }
|
---|
437 |
|
---|
438 | static err_t
|
---|
439 | lwiperf_tx_start_passive(lwiperf_state_tcp_t *conn)
|
---|
440 | {
|
---|
441 | err_t ret;
|
---|
442 | lwiperf_state_tcp_t *new_conn = NULL;
|
---|
443 | u16_t remote_port = (u16_t)lwip_htonl(conn->settings.remote_port);
|
---|
444 |
|
---|
445 | ret = lwiperf_tx_start_impl(&conn->conn_pcb->remote_ip, remote_port, &conn->settings, conn->report_fn, conn->report_arg,
|
---|
446 | conn->base.related_master_state, &new_conn);
|
---|
447 | if (ret == ERR_OK) {
|
---|
448 | LWIP_ASSERT("new_conn != NULL", new_conn != NULL);
|
---|
449 | new_conn->settings.flags = 0; /* prevent the remote side starting back as client again */
|
---|
450 | }
|
---|
451 | return ret;
|
---|
452 | }
|
---|
453 |
|
---|
454 | /** Receive data on an iperf tcp session */
|
---|
455 | static err_t
|
---|
456 | lwiperf_tcp_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)
|
---|
457 | {
|
---|
458 | u8_t tmp;
|
---|
459 | u16_t tot_len;
|
---|
460 | u32_t packet_idx;
|
---|
461 | struct pbuf *q;
|
---|
462 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
---|
463 |
|
---|
464 | LWIP_ASSERT("pcb mismatch", conn->conn_pcb == tpcb);
|
---|
465 | LWIP_UNUSED_ARG(tpcb);
|
---|
466 |
|
---|
467 | if (err != ERR_OK) {
|
---|
468 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE);
|
---|
469 | return ERR_OK;
|
---|
470 | }
|
---|
471 | if (p == NULL) {
|
---|
472 | /* connection closed -> test done */
|
---|
473 | if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) {
|
---|
474 | if ((conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_NOW)) == 0) {
|
---|
475 | /* client requested transmission after end of test */
|
---|
476 | lwiperf_tx_start_passive(conn);
|
---|
477 | }
|
---|
478 | }
|
---|
479 | lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_SERVER);
|
---|
480 | return ERR_OK;
|
---|
481 | }
|
---|
482 | tot_len = p->tot_len;
|
---|
483 |
|
---|
484 | conn->poll_count = 0;
|
---|
485 |
|
---|
486 | if ((!conn->have_settings_buf) || ((conn->bytes_transferred - 24) % (1024 * 128) == 0)) {
|
---|
487 | /* wait for 24-byte header */
|
---|
488 | if (p->tot_len < sizeof(lwiperf_settings_t)) {
|
---|
489 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR);
|
---|
490 | pbuf_free(p);
|
---|
491 | return ERR_OK;
|
---|
492 | }
|
---|
493 | if (!conn->have_settings_buf) {
|
---|
494 | if (pbuf_copy_partial(p, &conn->settings, sizeof(lwiperf_settings_t), 0) != sizeof(lwiperf_settings_t)) {
|
---|
495 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL);
|
---|
496 | pbuf_free(p);
|
---|
497 | return ERR_OK;
|
---|
498 | }
|
---|
499 | conn->have_settings_buf = 1;
|
---|
500 | if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) {
|
---|
501 | if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_NOW)) {
|
---|
502 | /* client requested parallel transmission test */
|
---|
503 | err_t err2 = lwiperf_tx_start_passive(conn);
|
---|
504 | if (err2 != ERR_OK) {
|
---|
505 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_TXERROR);
|
---|
506 | pbuf_free(p);
|
---|
507 | return ERR_OK;
|
---|
508 | }
|
---|
509 | }
|
---|
510 | }
|
---|
511 | } else {
|
---|
512 | if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) {
|
---|
513 | if (pbuf_memcmp(p, 0, &conn->settings, sizeof(lwiperf_settings_t)) != 0) {
|
---|
514 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR);
|
---|
515 | pbuf_free(p);
|
---|
516 | return ERR_OK;
|
---|
517 | }
|
---|
518 | }
|
---|
519 | }
|
---|
520 | conn->bytes_transferred += sizeof(lwiperf_settings_t);
|
---|
521 | if (conn->bytes_transferred <= 24) {
|
---|
522 | conn->time_started = sys_now();
|
---|
523 | tcp_recved(tpcb, p->tot_len);
|
---|
524 | pbuf_free(p);
|
---|
525 | return ERR_OK;
|
---|
526 | }
|
---|
527 | conn->next_num = 4; /* 24 bytes received... */
|
---|
528 | tmp = pbuf_remove_header(p, 24);
|
---|
529 | LWIP_ASSERT("pbuf_remove_header failed", tmp == 0);
|
---|
530 | LWIP_UNUSED_ARG(tmp); /* for LWIP_NOASSERT */
|
---|
531 | }
|
---|
532 |
|
---|
533 | packet_idx = 0;
|
---|
534 | for (q = p; q != NULL; q = q->next) {
|
---|
535 | #if LWIPERF_CHECK_RX_DATA
|
---|
536 | const u8_t *payload = (const u8_t *)q->payload;
|
---|
537 | u16_t i;
|
---|
538 | for (i = 0; i < q->len; i++) {
|
---|
539 | u8_t val = payload[i];
|
---|
540 | u8_t num = val - '0';
|
---|
541 | if (num == conn->next_num) {
|
---|
542 | conn->next_num++;
|
---|
543 | if (conn->next_num == 10) {
|
---|
544 | conn->next_num = 0;
|
---|
545 | }
|
---|
546 | } else {
|
---|
547 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR);
|
---|
548 | pbuf_free(p);
|
---|
549 | return ERR_OK;
|
---|
550 | }
|
---|
551 | }
|
---|
552 | #endif
|
---|
553 | packet_idx += q->len;
|
---|
554 | }
|
---|
555 | LWIP_ASSERT("count mismatch", packet_idx == p->tot_len);
|
---|
556 | conn->bytes_transferred += packet_idx;
|
---|
557 | tcp_recved(tpcb, tot_len);
|
---|
558 | pbuf_free(p);
|
---|
559 | return ERR_OK;
|
---|
560 | }
|
---|
561 |
|
---|
562 | /** Error callback, iperf tcp session aborted */
|
---|
563 | static void
|
---|
564 | lwiperf_tcp_err(void *arg, err_t err)
|
---|
565 | {
|
---|
566 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
---|
567 | LWIP_UNUSED_ARG(err);
|
---|
568 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE);
|
---|
569 | }
|
---|
570 |
|
---|
571 | /** TCP poll callback, try to send more data */
|
---|
572 | static err_t
|
---|
573 | lwiperf_tcp_poll(void *arg, struct tcp_pcb *tpcb)
|
---|
574 | {
|
---|
575 | lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
---|
576 | LWIP_ASSERT("pcb mismatch", conn->conn_pcb == tpcb);
|
---|
577 | LWIP_UNUSED_ARG(tpcb);
|
---|
578 | if (++conn->poll_count >= LWIPERF_TCP_MAX_IDLE_SEC) {
|
---|
579 | lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL);
|
---|
580 | return ERR_OK; /* lwiperf_tcp_close frees conn */
|
---|
581 | }
|
---|
582 |
|
---|
583 | if (!conn->base.server) {
|
---|
584 | lwiperf_tcp_client_send_more(conn);
|
---|
585 | }
|
---|
586 |
|
---|
587 | return ERR_OK;
|
---|
588 | }
|
---|
589 |
|
---|
590 | /** This is called when a new client connects for an iperf tcp session */
|
---|
591 | static err_t
|
---|
592 | lwiperf_tcp_accept(void *arg, struct tcp_pcb *newpcb, err_t err)
|
---|
593 | {
|
---|
594 | lwiperf_state_tcp_t *s, *conn;
|
---|
595 | if ((err != ERR_OK) || (newpcb == NULL) || (arg == NULL)) {
|
---|
596 | return ERR_VAL;
|
---|
597 | }
|
---|
598 |
|
---|
599 | s = (lwiperf_state_tcp_t *)arg;
|
---|
600 | LWIP_ASSERT("invalid session", s->base.server);
|
---|
601 | LWIP_ASSERT("invalid listen pcb", s->server_pcb != NULL);
|
---|
602 | LWIP_ASSERT("invalid conn pcb", s->conn_pcb == NULL);
|
---|
603 | if (s->specific_remote) {
|
---|
604 | LWIP_ASSERT("s->base.related_master_state != NULL", s->base.related_master_state != NULL);
|
---|
605 | if (!ip_addr_cmp(&newpcb->remote_ip, &s->remote_addr)) {
|
---|
606 | /* this listener belongs to a client session, and this is not the correct remote */
|
---|
607 | return ERR_VAL;
|
---|
608 | }
|
---|
609 | } else {
|
---|
610 | LWIP_ASSERT("s->base.related_master_state == NULL", s->base.related_master_state == NULL);
|
---|
611 | }
|
---|
612 |
|
---|
613 | conn = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t);
|
---|
614 | if (conn == NULL) {
|
---|
615 | return ERR_MEM;
|
---|
616 | }
|
---|
617 | memset(conn, 0, sizeof(lwiperf_state_tcp_t));
|
---|
618 | conn->base.tcp = 1;
|
---|
619 | conn->base.server = 1;
|
---|
620 | conn->base.related_master_state = &s->base;
|
---|
621 | conn->conn_pcb = newpcb;
|
---|
622 | conn->time_started = sys_now();
|
---|
623 | conn->report_fn = s->report_fn;
|
---|
624 | conn->report_arg = s->report_arg;
|
---|
625 |
|
---|
626 | /* setup the tcp rx connection */
|
---|
627 | tcp_arg(newpcb, conn);
|
---|
628 | tcp_recv(newpcb, lwiperf_tcp_recv);
|
---|
629 | tcp_poll(newpcb, lwiperf_tcp_poll, 2U);
|
---|
630 | tcp_err(conn->conn_pcb, lwiperf_tcp_err);
|
---|
631 |
|
---|
632 | if (s->specific_remote) {
|
---|
633 | /* this listener belongs to a client, so make the client the master of the newly created connection */
|
---|
634 | conn->base.related_master_state = s->base.related_master_state;
|
---|
635 | /* if dual mode or (tradeoff mode AND client is done): close the listener */
|
---|
636 | if (!s->client_tradeoff_mode || !lwiperf_list_find(s->base.related_master_state)) {
|
---|
637 | /* prevent report when closing: this is expected */
|
---|
638 | s->report_fn = NULL;
|
---|
639 | lwiperf_tcp_close(s, LWIPERF_TCP_ABORTED_LOCAL);
|
---|
640 | }
|
---|
641 | }
|
---|
642 | lwiperf_list_add(&conn->base);
|
---|
643 | return ERR_OK;
|
---|
644 | }
|
---|
645 |
|
---|
646 | /**
|
---|
647 | * @ingroup iperf
|
---|
648 | * Start a TCP iperf server on the default TCP port (5001) and listen for
|
---|
649 | * incoming connections from iperf clients.
|
---|
650 | *
|
---|
651 | * @returns a connection handle that can be used to abort the server
|
---|
652 | * by calling @ref lwiperf_abort()
|
---|
653 | */
|
---|
654 | void *
|
---|
655 | lwiperf_start_tcp_server_default(lwiperf_report_fn report_fn, void *report_arg)
|
---|
656 | {
|
---|
657 | return lwiperf_start_tcp_server(IP_ADDR_ANY, LWIPERF_TCP_PORT_DEFAULT,
|
---|
658 | report_fn, report_arg);
|
---|
659 | }
|
---|
660 |
|
---|
661 | /**
|
---|
662 | * @ingroup iperf
|
---|
663 | * Start a TCP iperf server on a specific IP address and port and listen for
|
---|
664 | * incoming connections from iperf clients.
|
---|
665 | *
|
---|
666 | * @returns a connection handle that can be used to abort the server
|
---|
667 | * by calling @ref lwiperf_abort()
|
---|
668 | */
|
---|
669 | void *
|
---|
670 | lwiperf_start_tcp_server(const ip_addr_t *local_addr, u16_t local_port,
|
---|
671 | lwiperf_report_fn report_fn, void *report_arg)
|
---|
672 | {
|
---|
673 | err_t err;
|
---|
674 | lwiperf_state_tcp_t *state = NULL;
|
---|
675 |
|
---|
676 | err = lwiperf_start_tcp_server_impl(local_addr, local_port, report_fn, report_arg,
|
---|
677 | NULL, &state);
|
---|
678 | if (err == ERR_OK) {
|
---|
679 | return state;
|
---|
680 | }
|
---|
681 | return NULL;
|
---|
682 | }
|
---|
683 |
|
---|
684 | static err_t lwiperf_start_tcp_server_impl(const ip_addr_t *local_addr, u16_t local_port,
|
---|
685 | lwiperf_report_fn report_fn, void *report_arg,
|
---|
686 | lwiperf_state_base_t *related_master_state, lwiperf_state_tcp_t **state)
|
---|
687 | {
|
---|
688 | err_t err;
|
---|
689 | struct tcp_pcb *pcb;
|
---|
690 | lwiperf_state_tcp_t *s;
|
---|
691 |
|
---|
692 | LWIP_ASSERT_CORE_LOCKED();
|
---|
693 |
|
---|
694 | LWIP_ASSERT("state != NULL", state != NULL);
|
---|
695 |
|
---|
696 | if (local_addr == NULL) {
|
---|
697 | return ERR_ARG;
|
---|
698 | }
|
---|
699 |
|
---|
700 | s = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t);
|
---|
701 | if (s == NULL) {
|
---|
702 | return ERR_MEM;
|
---|
703 | }
|
---|
704 | memset(s, 0, sizeof(lwiperf_state_tcp_t));
|
---|
705 | s->base.tcp = 1;
|
---|
706 | s->base.server = 1;
|
---|
707 | s->base.related_master_state = related_master_state;
|
---|
708 | s->report_fn = report_fn;
|
---|
709 | s->report_arg = report_arg;
|
---|
710 |
|
---|
711 | pcb = tcp_new_ip_type(LWIPERF_SERVER_IP_TYPE);
|
---|
712 | if (pcb == NULL) {
|
---|
713 | return ERR_MEM;
|
---|
714 | }
|
---|
715 | err = tcp_bind(pcb, local_addr, local_port);
|
---|
716 | if (err != ERR_OK) {
|
---|
717 | return err;
|
---|
718 | }
|
---|
719 | s->server_pcb = tcp_listen_with_backlog(pcb, 1);
|
---|
720 | if (s->server_pcb == NULL) {
|
---|
721 | if (pcb != NULL) {
|
---|
722 | tcp_close(pcb);
|
---|
723 | }
|
---|
724 | LWIPERF_FREE(lwiperf_state_tcp_t, s);
|
---|
725 | return ERR_MEM;
|
---|
726 | }
|
---|
727 | pcb = NULL;
|
---|
728 |
|
---|
729 | tcp_arg(s->server_pcb, s);
|
---|
730 | tcp_accept(s->server_pcb, lwiperf_tcp_accept);
|
---|
731 |
|
---|
732 | lwiperf_list_add(&s->base);
|
---|
733 | *state = s;
|
---|
734 | return ERR_OK;
|
---|
735 | }
|
---|
736 |
|
---|
737 | /**
|
---|
738 | * @ingroup iperf
|
---|
739 | * Start a TCP iperf client to the default TCP port (5001).
|
---|
740 | *
|
---|
741 | * @returns a connection handle that can be used to abort the client
|
---|
742 | * by calling @ref lwiperf_abort()
|
---|
743 | */
|
---|
744 | void* lwiperf_start_tcp_client_default(const ip_addr_t* remote_addr,
|
---|
745 | lwiperf_report_fn report_fn, void* report_arg)
|
---|
746 | {
|
---|
747 | return lwiperf_start_tcp_client(remote_addr, LWIPERF_TCP_PORT_DEFAULT, LWIPERF_CLIENT,
|
---|
748 | report_fn, report_arg);
|
---|
749 | }
|
---|
750 |
|
---|
751 | /**
|
---|
752 | * @ingroup iperf
|
---|
753 | * Start a TCP iperf client to a specific IP address and port.
|
---|
754 | *
|
---|
755 | * @returns a connection handle that can be used to abort the client
|
---|
756 | * by calling @ref lwiperf_abort()
|
---|
757 | */
|
---|
758 | void* lwiperf_start_tcp_client(const ip_addr_t* remote_addr, u16_t remote_port,
|
---|
759 | enum lwiperf_client_type type, lwiperf_report_fn report_fn, void* report_arg)
|
---|
760 | {
|
---|
761 | err_t ret;
|
---|
762 | lwiperf_settings_t settings;
|
---|
763 | lwiperf_state_tcp_t *state = NULL;
|
---|
764 |
|
---|
765 | memset(&settings, 0, sizeof(settings));
|
---|
766 | switch (type) {
|
---|
767 | case LWIPERF_CLIENT:
|
---|
768 | /* Unidirectional tx only test */
|
---|
769 | settings.flags = 0;
|
---|
770 | break;
|
---|
771 | case LWIPERF_DUAL:
|
---|
772 | /* Do a bidirectional test simultaneously */
|
---|
773 | settings.flags = htonl(LWIPERF_FLAGS_ANSWER_TEST | LWIPERF_FLAGS_ANSWER_NOW);
|
---|
774 | break;
|
---|
775 | case LWIPERF_TRADEOFF:
|
---|
776 | /* Do a bidirectional test individually */
|
---|
777 | settings.flags = htonl(LWIPERF_FLAGS_ANSWER_TEST);
|
---|
778 | break;
|
---|
779 | default:
|
---|
780 | /* invalid argument */
|
---|
781 | return NULL;
|
---|
782 | }
|
---|
783 | settings.num_threads = htonl(1);
|
---|
784 | settings.remote_port = htonl(LWIPERF_TCP_PORT_DEFAULT);
|
---|
785 | /* TODO: implement passing duration/amount of bytes to transfer */
|
---|
786 | settings.amount = htonl((u32_t)-1000);
|
---|
787 |
|
---|
788 | ret = lwiperf_tx_start_impl(remote_addr, remote_port, &settings, report_fn, report_arg, NULL, &state);
|
---|
789 | if (ret == ERR_OK) {
|
---|
790 | LWIP_ASSERT("state != NULL", state != NULL);
|
---|
791 | if (type != LWIPERF_CLIENT) {
|
---|
792 | /* start corresponding server now */
|
---|
793 | lwiperf_state_tcp_t *server = NULL;
|
---|
794 | ret = lwiperf_start_tcp_server_impl(&state->conn_pcb->local_ip, LWIPERF_TCP_PORT_DEFAULT,
|
---|
795 | report_fn, report_arg, (lwiperf_state_base_t *)state, &server);
|
---|
796 | if (ret != ERR_OK) {
|
---|
797 | /* starting server failed, abort client */
|
---|
798 | lwiperf_abort(state);
|
---|
799 | return NULL;
|
---|
800 | }
|
---|
801 | /* make this server accept one connection only */
|
---|
802 | server->specific_remote = 1;
|
---|
803 | server->remote_addr = state->conn_pcb->remote_ip;
|
---|
804 | if (type == LWIPERF_TRADEOFF) {
|
---|
805 | /* tradeoff means that the remote host connects only after the client is done,
|
---|
806 | so keep the listen pcb open until the client is done */
|
---|
807 | server->client_tradeoff_mode = 1;
|
---|
808 | }
|
---|
809 | }
|
---|
810 | return state;
|
---|
811 | }
|
---|
812 | return NULL;
|
---|
813 | }
|
---|
814 |
|
---|
815 | /**
|
---|
816 | * @ingroup iperf
|
---|
817 | * Abort an iperf session (handle returned by lwiperf_start_tcp_server*())
|
---|
818 | */
|
---|
819 | void
|
---|
820 | lwiperf_abort(void *lwiperf_session)
|
---|
821 | {
|
---|
822 | lwiperf_state_base_t *i, *dealloc, *last = NULL;
|
---|
823 |
|
---|
824 | LWIP_ASSERT_CORE_LOCKED();
|
---|
825 |
|
---|
826 | for (i = lwiperf_all_connections; i != NULL; ) {
|
---|
827 | if ((i == lwiperf_session) || (i->related_master_state == lwiperf_session)) {
|
---|
828 | dealloc = i;
|
---|
829 | i = i->next;
|
---|
830 | if (last != NULL) {
|
---|
831 | last->next = i;
|
---|
832 | }
|
---|
833 | LWIPERF_FREE(lwiperf_state_tcp_t, dealloc); /* @todo: type? */
|
---|
834 | } else {
|
---|
835 | last = i;
|
---|
836 | i = i->next;
|
---|
837 | }
|
---|
838 | }
|
---|
839 | }
|
---|
840 |
|
---|
841 | #endif /* LWIP_TCP && LWIP_CALLBACK_API */
|
---|