[457] | 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);
|
---|
| 183 |
|
---|
| 184 |
|
---|
| 185 | /** Add an iperf session to the 'active' list */
|
---|
| 186 | static void
|
---|
| 187 | lwiperf_list_add(lwiperf_state_base_t *item)
|
---|
| 188 | {
|
---|
| 189 | item->next = lwiperf_all_connections;
|
---|
| 190 | lwiperf_all_connections = item;
|
---|
| 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 */
|
---|