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+/**
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+ * @file
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+ * lwIP iPerf server implementation
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+ */
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+
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+/**
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+ * @defgroup iperf Iperf server
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+ * @ingroup apps
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+ *
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+ * This is a simple performance measuring client/server to check your bandwith using
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+ * iPerf2 on a PC as server/client.
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+ * It is currently a minimal implementation providing a TCP client/server only.
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+ *
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+ * @todo:
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+ * - implement UDP mode
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+ * - protect combined sessions handling (via 'related_master_state') against reallocation
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+ * (this is a pointer address, currently, so if the same memory is allocated again,
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+ * session pairs (tx/rx) can be confused on reallocation)
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+ */
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+
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+/*
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+ * Copyright (c) 2014 Simon Goldschmidt
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+ * All rights reserved.
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+ *
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+ * Redistribution and use in source and binary forms, with or without modification,
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+ * are permitted provided that the following conditions are met:
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+ *
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+ * 1. Redistributions of source code must retain the above copyright notice,
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+ * this list of conditions and the following disclaimer.
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+ * 2. Redistributions in binary form must reproduce the above copyright notice,
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+ * this list of conditions and the following disclaimer in the documentation
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+ * and/or other materials provided with the distribution.
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+ * 3. The name of the author may not be used to endorse or promote products
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+ * derived from this software without specific prior written permission.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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+ * OF SUCH DAMAGE.
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+ *
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+ * This file is part of the lwIP TCP/IP stack.
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+ *
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+ * Author: Simon Goldschmidt
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+ */
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+
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+#include "lwip/apps/lwiperf.h"
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+
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+#include "lwip/tcp.h"
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+#include "lwip/sys.h"
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+
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+#include <string.h>
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+
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+/* Currently, only TCP is implemented */
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+#if LWIP_TCP && LWIP_CALLBACK_API
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+
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+/** Specify the idle timeout (in seconds) after that the test fails */
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+#ifndef LWIPERF_TCP_MAX_IDLE_SEC
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+#define LWIPERF_TCP_MAX_IDLE_SEC 10U
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+#endif
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+#if LWIPERF_TCP_MAX_IDLE_SEC > 255
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+#error LWIPERF_TCP_MAX_IDLE_SEC must fit into an u8_t
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+#endif
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+
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+/** Change this if you don't want to lwiperf to listen to any IP version */
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+#ifndef LWIPERF_SERVER_IP_TYPE
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+#define LWIPERF_SERVER_IP_TYPE IPADDR_TYPE_ANY
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+#endif
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+
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+/* File internal memory allocation (struct lwiperf_*): this defaults to
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+ the heap */
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+#ifndef LWIPERF_ALLOC
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+#define LWIPERF_ALLOC(type) mem_malloc(sizeof(type))
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+#define LWIPERF_FREE(type, item) mem_free(item)
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+#endif
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+
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+/** If this is 1, check that received data has the correct format */
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+#ifndef LWIPERF_CHECK_RX_DATA
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+#define LWIPERF_CHECK_RX_DATA 0
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+#endif
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+
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+/** This is the Iperf settings struct sent from the client */
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+typedef struct _lwiperf_settings {
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+#define LWIPERF_FLAGS_ANSWER_TEST 0x80000000
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+#define LWIPERF_FLAGS_ANSWER_NOW 0x00000001
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+ u32_t flags;
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+ u32_t num_threads; /* unused for now */
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+ u32_t remote_port;
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+ u32_t buffer_len; /* unused for now */
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+ u32_t win_band; /* TCP window / UDP rate: unused for now */
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+ u32_t amount; /* pos. value: bytes?; neg. values: time (unit is 10ms: 1/100 second) */
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+} lwiperf_settings_t;
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+
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+/** Basic connection handle */
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+struct _lwiperf_state_base;
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+typedef struct _lwiperf_state_base lwiperf_state_base_t;
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+struct _lwiperf_state_base {
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+ /* linked list */
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+ lwiperf_state_base_t *next;
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+ /* 1=tcp, 0=udp */
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+ u8_t tcp;
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+ /* 1=server, 0=client */
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+ u8_t server;
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+ /* master state used to abort sessions (e.g. listener, main client) */
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+ lwiperf_state_base_t *related_master_state;
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+};
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+
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+/** Connection handle for a TCP iperf session */
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+typedef struct _lwiperf_state_tcp {
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+ lwiperf_state_base_t base;
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+ struct tcp_pcb *server_pcb;
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+ struct tcp_pcb *conn_pcb;
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+ u32_t time_started;
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+ lwiperf_report_fn report_fn;
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+ void *report_arg;
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+ u8_t poll_count;
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+ u8_t next_num;
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+ /* 1=start server when client is closed */
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+ u8_t client_tradeoff_mode;
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+ u32_t bytes_transferred;
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+ lwiperf_settings_t settings;
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+ u8_t have_settings_buf;
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+ u8_t specific_remote;
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+ ip_addr_t remote_addr;
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+} lwiperf_state_tcp_t;
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+
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+/** List of active iperf sessions */
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+static lwiperf_state_base_t *lwiperf_all_connections;
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+/** A const buffer to send from: we want to measure sending, not copying! */
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+static const u8_t lwiperf_txbuf_const[1600] = {
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+ '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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+ '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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+ '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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+ '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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+ '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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+ '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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+ '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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+ '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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+ '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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|
|
+ '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',
|
|
|
+};
|
|
|
+
|
|
|
+static err_t lwiperf_tcp_poll(void *arg, struct tcp_pcb *tpcb);
|
|
|
+static void lwiperf_tcp_err(void *arg, err_t err);
|
|
|
+static err_t lwiperf_start_tcp_server_impl(const ip_addr_t *local_addr, u16_t local_port,
|
|
|
+ lwiperf_report_fn report_fn, void *report_arg,
|
|
|
+ lwiperf_state_base_t *related_master_state, lwiperf_state_tcp_t **state);
|
|
|
+
|
|
|
+
|
|
|
+/** Add an iperf session to the 'active' list */
|
|
|
+static void
|
|
|
+lwiperf_list_add(lwiperf_state_base_t *item)
|
|
|
+{
|
|
|
+ item->next = lwiperf_all_connections;
|
|
|
+ lwiperf_all_connections = item;
|
|
|
+}
|
|
|
+
|
|
|
+/** Remove an iperf session from the 'active' list */
|
|
|
+static void
|
|
|
+lwiperf_list_remove(lwiperf_state_base_t *item)
|
|
|
+{
|
|
|
+ lwiperf_state_base_t *prev = NULL;
|
|
|
+ lwiperf_state_base_t *iter;
|
|
|
+ for (iter = lwiperf_all_connections; iter != NULL; prev = iter, iter = iter->next) {
|
|
|
+ if (iter == item) {
|
|
|
+ if (prev == NULL) {
|
|
|
+ lwiperf_all_connections = iter->next;
|
|
|
+ } else {
|
|
|
+ prev->next = iter->next;
|
|
|
+ }
|
|
|
+ /* @debug: ensure this item is listed only once */
|
|
|
+ for (iter = iter->next; iter != NULL; iter = iter->next) {
|
|
|
+ LWIP_ASSERT("duplicate entry", iter != item);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static lwiperf_state_base_t *
|
|
|
+lwiperf_list_find(lwiperf_state_base_t *item)
|
|
|
+{
|
|
|
+ lwiperf_state_base_t *iter;
|
|
|
+ for (iter = lwiperf_all_connections; iter != NULL; iter = iter->next) {
|
|
|
+ if (iter == item) {
|
|
|
+ return item;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return NULL;
|
|
|
+}
|
|
|
+
|
|
|
+/** Call the report function of an iperf tcp session */
|
|
|
+static void
|
|
|
+lwip_tcp_conn_report(lwiperf_state_tcp_t *conn, enum lwiperf_report_type report_type)
|
|
|
+{
|
|
|
+ if ((conn != NULL) && (conn->report_fn != NULL)) {
|
|
|
+ u32_t now, duration_ms, bandwidth_kbitpsec;
|
|
|
+ now = sys_now();
|
|
|
+ duration_ms = now - conn->time_started;
|
|
|
+ if (duration_ms == 0) {
|
|
|
+ bandwidth_kbitpsec = 0;
|
|
|
+ } else {
|
|
|
+ bandwidth_kbitpsec = (conn->bytes_transferred / duration_ms) * 8U;
|
|
|
+ }
|
|
|
+ conn->report_fn(conn->report_arg, report_type,
|
|
|
+ &conn->conn_pcb->local_ip, conn->conn_pcb->local_port,
|
|
|
+ &conn->conn_pcb->remote_ip, conn->conn_pcb->remote_port,
|
|
|
+ conn->bytes_transferred, duration_ms, bandwidth_kbitpsec);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/** Close an iperf tcp session */
|
|
|
+static void
|
|
|
+lwiperf_tcp_close(lwiperf_state_tcp_t *conn, enum lwiperf_report_type report_type)
|
|
|
+{
|
|
|
+ err_t err;
|
|
|
+
|
|
|
+ lwiperf_list_remove(&conn->base);
|
|
|
+ lwip_tcp_conn_report(conn, report_type);
|
|
|
+ if (conn->conn_pcb != NULL) {
|
|
|
+ tcp_arg(conn->conn_pcb, NULL);
|
|
|
+ tcp_poll(conn->conn_pcb, NULL, 0);
|
|
|
+ tcp_sent(conn->conn_pcb, NULL);
|
|
|
+ tcp_recv(conn->conn_pcb, NULL);
|
|
|
+ tcp_err(conn->conn_pcb, NULL);
|
|
|
+ err = tcp_close(conn->conn_pcb);
|
|
|
+ if (err != ERR_OK) {
|
|
|
+ /* don't want to wait for free memory here... */
|
|
|
+ tcp_abort(conn->conn_pcb);
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* no conn pcb, this is the listener pcb */
|
|
|
+ err = tcp_close(conn->server_pcb);
|
|
|
+ LWIP_ASSERT("error", err == ERR_OK);
|
|
|
+ }
|
|
|
+ LWIPERF_FREE(lwiperf_state_tcp_t, conn);
|
|
|
+}
|
|
|
+
|
|
|
+/** Try to send more data on an iperf tcp session */
|
|
|
+static err_t
|
|
|
+lwiperf_tcp_client_send_more(lwiperf_state_tcp_t *conn)
|
|
|
+{
|
|
|
+ int send_more;
|
|
|
+ err_t err;
|
|
|
+ u16_t txlen;
|
|
|
+ u16_t txlen_max;
|
|
|
+ void *txptr;
|
|
|
+ u8_t apiflags;
|
|
|
+
|
|
|
+ LWIP_ASSERT("conn invalid", (conn != NULL) && conn->base.tcp && (conn->base.server == 0));
|
|
|
+
|
|
|
+ do {
|
|
|
+ send_more = 0;
|
|
|
+ if (conn->settings.amount & PP_HTONL(0x80000000)) {
|
|
|
+ /* this session is time-limited */
|
|
|
+ u32_t now = sys_now();
|
|
|
+ u32_t diff_ms = now - conn->time_started;
|
|
|
+ u32_t time = (u32_t) - (s32_t)lwip_htonl(conn->settings.amount);
|
|
|
+ u32_t time_ms = time * 10;
|
|
|
+ if (diff_ms >= time_ms) {
|
|
|
+ /* time specified by the client is over -> close the connection */
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* this session is byte-limited */
|
|
|
+ u32_t amount_bytes = lwip_htonl(conn->settings.amount);
|
|
|
+ /* @todo: this can send up to 1*MSS more than requested... */
|
|
|
+ if (amount_bytes >= conn->bytes_transferred) {
|
|
|
+ /* all requested bytes transferred -> close the connection */
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (conn->bytes_transferred < 24) {
|
|
|
+ /* transmit the settings a first time */
|
|
|
+ txptr = &((u8_t *)&conn->settings)[conn->bytes_transferred];
|
|
|
+ txlen_max = (u16_t)(24 - conn->bytes_transferred);
|
|
|
+ apiflags = TCP_WRITE_FLAG_COPY;
|
|
|
+ } else if (conn->bytes_transferred < 48) {
|
|
|
+ /* transmit the settings a second time */
|
|
|
+ txptr = &((u8_t *)&conn->settings)[conn->bytes_transferred - 24];
|
|
|
+ txlen_max = (u16_t)(48 - conn->bytes_transferred);
|
|
|
+ apiflags = TCP_WRITE_FLAG_COPY | TCP_WRITE_FLAG_MORE;
|
|
|
+ send_more = 1;
|
|
|
+ } else {
|
|
|
+ /* transmit data */
|
|
|
+ /* @todo: every x bytes, transmit the settings again */
|
|
|
+ txptr = LWIP_CONST_CAST(void *, &lwiperf_txbuf_const[conn->bytes_transferred % 10]);
|
|
|
+ txlen_max = TCP_MSS;
|
|
|
+ if (conn->bytes_transferred == 48) { /* @todo: fix this for intermediate settings, too */
|
|
|
+ txlen_max = TCP_MSS - 24;
|
|
|
+ }
|
|
|
+ apiflags = 0; /* no copying needed */
|
|
|
+ send_more = 1;
|
|
|
+ }
|
|
|
+ txlen = txlen_max;
|
|
|
+ do {
|
|
|
+ err = tcp_write(conn->conn_pcb, txptr, txlen, apiflags);
|
|
|
+ if (err == ERR_MEM) {
|
|
|
+ txlen /= 2;
|
|
|
+ }
|
|
|
+ } while ((err == ERR_MEM) && (txlen >= (TCP_MSS / 2)));
|
|
|
+
|
|
|
+ if (err == ERR_OK) {
|
|
|
+ conn->bytes_transferred += txlen;
|
|
|
+ } else {
|
|
|
+ send_more = 0;
|
|
|
+ }
|
|
|
+ } while (send_more);
|
|
|
+
|
|
|
+ tcp_output(conn->conn_pcb);
|
|
|
+ return ERR_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/** TCP sent callback, try to send more data */
|
|
|
+static err_t
|
|
|
+lwiperf_tcp_client_sent(void *arg, struct tcp_pcb *tpcb, u16_t len)
|
|
|
+{
|
|
|
+ lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
|
|
+ /* @todo: check 'len' (e.g. to time ACK of all data)? for now, we just send more... */
|
|
|
+ LWIP_ASSERT("invalid conn", conn->conn_pcb == tpcb);
|
|
|
+ LWIP_UNUSED_ARG(tpcb);
|
|
|
+ LWIP_UNUSED_ARG(len);
|
|
|
+
|
|
|
+ conn->poll_count = 0;
|
|
|
+
|
|
|
+ return lwiperf_tcp_client_send_more(conn);
|
|
|
+}
|
|
|
+
|
|
|
+/** TCP connected callback (active connection), send data now */
|
|
|
+static err_t
|
|
|
+lwiperf_tcp_client_connected(void *arg, struct tcp_pcb *tpcb, err_t err)
|
|
|
+{
|
|
|
+ lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
|
|
+ LWIP_ASSERT("invalid conn", conn->conn_pcb == tpcb);
|
|
|
+ LWIP_UNUSED_ARG(tpcb);
|
|
|
+ if (err != ERR_OK) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ conn->poll_count = 0;
|
|
|
+ conn->time_started = sys_now();
|
|
|
+ return lwiperf_tcp_client_send_more(conn);
|
|
|
+}
|
|
|
+
|
|
|
+/** Start TCP connection back to the client (either parallel or after the
|
|
|
+ * receive test has finished.
|
|
|
+ */
|
|
|
+static err_t
|
|
|
+lwiperf_tx_start_impl(const ip_addr_t *remote_ip, u16_t remote_port, lwiperf_settings_t *settings, lwiperf_report_fn report_fn,
|
|
|
+ void *report_arg, lwiperf_state_base_t *related_master_state, lwiperf_state_tcp_t **new_conn)
|
|
|
+{
|
|
|
+ err_t err;
|
|
|
+ lwiperf_state_tcp_t *client_conn;
|
|
|
+ struct tcp_pcb *newpcb;
|
|
|
+ ip_addr_t remote_addr;
|
|
|
+
|
|
|
+ LWIP_ASSERT("remote_ip != NULL", remote_ip != NULL);
|
|
|
+ LWIP_ASSERT("remote_ip != NULL", settings != NULL);
|
|
|
+ LWIP_ASSERT("new_conn != NULL", new_conn != NULL);
|
|
|
+ *new_conn = NULL;
|
|
|
+
|
|
|
+ client_conn = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t);
|
|
|
+ if (client_conn == NULL) {
|
|
|
+ return ERR_MEM;
|
|
|
+ }
|
|
|
+ newpcb = tcp_new_ip_type(IP_GET_TYPE(remote_ip));
|
|
|
+ if (newpcb == NULL) {
|
|
|
+ LWIPERF_FREE(lwiperf_state_tcp_t, client_conn);
|
|
|
+ return ERR_MEM;
|
|
|
+ }
|
|
|
+ memset(client_conn, 0, sizeof(lwiperf_state_tcp_t));
|
|
|
+ client_conn->base.tcp = 1;
|
|
|
+ client_conn->base.related_master_state = related_master_state;
|
|
|
+ client_conn->conn_pcb = newpcb;
|
|
|
+ client_conn->time_started = sys_now(); /* @todo: set this again on 'connected' */
|
|
|
+ client_conn->report_fn = report_fn;
|
|
|
+ client_conn->report_arg = report_arg;
|
|
|
+ client_conn->next_num = 4; /* initial nr is '4' since the header has 24 byte */
|
|
|
+ client_conn->bytes_transferred = 0;
|
|
|
+ memcpy(&client_conn->settings, settings, sizeof(*settings));
|
|
|
+ client_conn->have_settings_buf = 1;
|
|
|
+
|
|
|
+ tcp_arg(newpcb, client_conn);
|
|
|
+ tcp_sent(newpcb, lwiperf_tcp_client_sent);
|
|
|
+ tcp_poll(newpcb, lwiperf_tcp_poll, 2U);
|
|
|
+ tcp_err(newpcb, lwiperf_tcp_err);
|
|
|
+
|
|
|
+ ip_addr_copy(remote_addr, *remote_ip);
|
|
|
+
|
|
|
+ err = tcp_connect(newpcb, &remote_addr, remote_port, lwiperf_tcp_client_connected);
|
|
|
+ if (err != ERR_OK) {
|
|
|
+ lwiperf_tcp_close(client_conn, LWIPERF_TCP_ABORTED_LOCAL);
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+ lwiperf_list_add(&client_conn->base);
|
|
|
+ *new_conn = client_conn;
|
|
|
+ return ERR_OK;
|
|
|
+}
|
|
|
+
|
|
|
+static err_t
|
|
|
+lwiperf_tx_start_passive(lwiperf_state_tcp_t *conn)
|
|
|
+{
|
|
|
+ err_t ret;
|
|
|
+ lwiperf_state_tcp_t *new_conn = NULL;
|
|
|
+ u16_t remote_port = (u16_t)lwip_htonl(conn->settings.remote_port);
|
|
|
+
|
|
|
+ ret = lwiperf_tx_start_impl(&conn->conn_pcb->remote_ip, remote_port, &conn->settings, conn->report_fn, conn->report_arg,
|
|
|
+ conn->base.related_master_state, &new_conn);
|
|
|
+ if (ret == ERR_OK) {
|
|
|
+ LWIP_ASSERT("new_conn != NULL", new_conn != NULL);
|
|
|
+ new_conn->settings.flags = 0; /* prevent the remote side starting back as client again */
|
|
|
+ }
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+/** Receive data on an iperf tcp session */
|
|
|
+static err_t
|
|
|
+lwiperf_tcp_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)
|
|
|
+{
|
|
|
+ u8_t tmp;
|
|
|
+ u16_t tot_len;
|
|
|
+ u32_t packet_idx;
|
|
|
+ struct pbuf *q;
|
|
|
+ lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
|
|
+
|
|
|
+ LWIP_ASSERT("pcb mismatch", conn->conn_pcb == tpcb);
|
|
|
+ LWIP_UNUSED_ARG(tpcb);
|
|
|
+
|
|
|
+ if (err != ERR_OK) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ if (p == NULL) {
|
|
|
+ /* connection closed -> test done */
|
|
|
+ if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) {
|
|
|
+ if ((conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_NOW)) == 0) {
|
|
|
+ /* client requested transmission after end of test */
|
|
|
+ lwiperf_tx_start_passive(conn);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_SERVER);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ tot_len = p->tot_len;
|
|
|
+
|
|
|
+ conn->poll_count = 0;
|
|
|
+
|
|
|
+ if ((!conn->have_settings_buf) || ((conn->bytes_transferred - 24) % (1024 * 128) == 0)) {
|
|
|
+ /* wait for 24-byte header */
|
|
|
+ if (p->tot_len < sizeof(lwiperf_settings_t)) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ if (!conn->have_settings_buf) {
|
|
|
+ if (pbuf_copy_partial(p, &conn->settings, sizeof(lwiperf_settings_t), 0) != sizeof(lwiperf_settings_t)) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ conn->have_settings_buf = 1;
|
|
|
+ if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) {
|
|
|
+ if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_NOW)) {
|
|
|
+ /* client requested parallel transmission test */
|
|
|
+ err_t err2 = lwiperf_tx_start_passive(conn);
|
|
|
+ if (err2 != ERR_OK) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_TXERROR);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if (conn->settings.flags & PP_HTONL(LWIPERF_FLAGS_ANSWER_TEST)) {
|
|
|
+ if (pbuf_memcmp(p, 0, &conn->settings, sizeof(lwiperf_settings_t)) != 0) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ conn->bytes_transferred += sizeof(lwiperf_settings_t);
|
|
|
+ if (conn->bytes_transferred <= 24) {
|
|
|
+ conn->time_started = sys_now();
|
|
|
+ tcp_recved(tpcb, p->tot_len);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ conn->next_num = 4; /* 24 bytes received... */
|
|
|
+ tmp = pbuf_remove_header(p, 24);
|
|
|
+ LWIP_ASSERT("pbuf_remove_header failed", tmp == 0);
|
|
|
+ LWIP_UNUSED_ARG(tmp); /* for LWIP_NOASSERT */
|
|
|
+ }
|
|
|
+
|
|
|
+ packet_idx = 0;
|
|
|
+ for (q = p; q != NULL; q = q->next) {
|
|
|
+#if LWIPERF_CHECK_RX_DATA
|
|
|
+ const u8_t *payload = (const u8_t *)q->payload;
|
|
|
+ u16_t i;
|
|
|
+ for (i = 0; i < q->len; i++) {
|
|
|
+ u8_t val = payload[i];
|
|
|
+ u8_t num = val - '0';
|
|
|
+ if (num == conn->next_num) {
|
|
|
+ conn->next_num++;
|
|
|
+ if (conn->next_num == 10) {
|
|
|
+ conn->next_num = 0;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL_DATAERROR);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ packet_idx += q->len;
|
|
|
+ }
|
|
|
+ LWIP_ASSERT("count mismatch", packet_idx == p->tot_len);
|
|
|
+ conn->bytes_transferred += packet_idx;
|
|
|
+ tcp_recved(tpcb, tot_len);
|
|
|
+ pbuf_free(p);
|
|
|
+ return ERR_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/** Error callback, iperf tcp session aborted */
|
|
|
+static void
|
|
|
+lwiperf_tcp_err(void *arg, err_t err)
|
|
|
+{
|
|
|
+ lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
|
|
+ LWIP_UNUSED_ARG(err);
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_REMOTE);
|
|
|
+}
|
|
|
+
|
|
|
+/** TCP poll callback, try to send more data */
|
|
|
+static err_t
|
|
|
+lwiperf_tcp_poll(void *arg, struct tcp_pcb *tpcb)
|
|
|
+{
|
|
|
+ lwiperf_state_tcp_t *conn = (lwiperf_state_tcp_t *)arg;
|
|
|
+ LWIP_ASSERT("pcb mismatch", conn->conn_pcb == tpcb);
|
|
|
+ LWIP_UNUSED_ARG(tpcb);
|
|
|
+ if (++conn->poll_count >= LWIPERF_TCP_MAX_IDLE_SEC) {
|
|
|
+ lwiperf_tcp_close(conn, LWIPERF_TCP_ABORTED_LOCAL);
|
|
|
+ return ERR_OK; /* lwiperf_tcp_close frees conn */
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!conn->base.server) {
|
|
|
+ lwiperf_tcp_client_send_more(conn);
|
|
|
+ }
|
|
|
+
|
|
|
+ return ERR_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/** This is called when a new client connects for an iperf tcp session */
|
|
|
+static err_t
|
|
|
+lwiperf_tcp_accept(void *arg, struct tcp_pcb *newpcb, err_t err)
|
|
|
+{
|
|
|
+ lwiperf_state_tcp_t *s, *conn;
|
|
|
+ if ((err != ERR_OK) || (newpcb == NULL) || (arg == NULL)) {
|
|
|
+ return ERR_VAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ s = (lwiperf_state_tcp_t *)arg;
|
|
|
+ LWIP_ASSERT("invalid session", s->base.server);
|
|
|
+ LWIP_ASSERT("invalid listen pcb", s->server_pcb != NULL);
|
|
|
+ LWIP_ASSERT("invalid conn pcb", s->conn_pcb == NULL);
|
|
|
+ if (s->specific_remote) {
|
|
|
+ LWIP_ASSERT("s->base.related_master_state != NULL", s->base.related_master_state != NULL);
|
|
|
+ if (!ip_addr_cmp(&newpcb->remote_ip, &s->remote_addr)) {
|
|
|
+ /* this listener belongs to a client session, and this is not the correct remote */
|
|
|
+ return ERR_VAL;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ LWIP_ASSERT("s->base.related_master_state == NULL", s->base.related_master_state == NULL);
|
|
|
+ }
|
|
|
+
|
|
|
+ conn = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t);
|
|
|
+ if (conn == NULL) {
|
|
|
+ return ERR_MEM;
|
|
|
+ }
|
|
|
+ memset(conn, 0, sizeof(lwiperf_state_tcp_t));
|
|
|
+ conn->base.tcp = 1;
|
|
|
+ conn->base.server = 1;
|
|
|
+ conn->base.related_master_state = &s->base;
|
|
|
+ conn->conn_pcb = newpcb;
|
|
|
+ conn->time_started = sys_now();
|
|
|
+ conn->report_fn = s->report_fn;
|
|
|
+ conn->report_arg = s->report_arg;
|
|
|
+
|
|
|
+ /* setup the tcp rx connection */
|
|
|
+ tcp_arg(newpcb, conn);
|
|
|
+ tcp_recv(newpcb, lwiperf_tcp_recv);
|
|
|
+ tcp_poll(newpcb, lwiperf_tcp_poll, 2U);
|
|
|
+ tcp_err(conn->conn_pcb, lwiperf_tcp_err);
|
|
|
+
|
|
|
+ if (s->specific_remote) {
|
|
|
+ /* this listener belongs to a client, so make the client the master of the newly created connection */
|
|
|
+ conn->base.related_master_state = s->base.related_master_state;
|
|
|
+ /* if dual mode or (tradeoff mode AND client is done): close the listener */
|
|
|
+ if (!s->client_tradeoff_mode || !lwiperf_list_find(s->base.related_master_state)) {
|
|
|
+ /* prevent report when closing: this is expected */
|
|
|
+ s->report_fn = NULL;
|
|
|
+ lwiperf_tcp_close(s, LWIPERF_TCP_ABORTED_LOCAL);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ lwiperf_list_add(&conn->base);
|
|
|
+ return ERR_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @ingroup iperf
|
|
|
+ * Start a TCP iperf server on the default TCP port (5001) and listen for
|
|
|
+ * incoming connections from iperf clients.
|
|
|
+ *
|
|
|
+ * @returns a connection handle that can be used to abort the server
|
|
|
+ * by calling @ref lwiperf_abort()
|
|
|
+ */
|
|
|
+void *
|
|
|
+lwiperf_start_tcp_server_default(lwiperf_report_fn report_fn, void *report_arg)
|
|
|
+{
|
|
|
+ return lwiperf_start_tcp_server(IP_ADDR_ANY, LWIPERF_TCP_PORT_DEFAULT,
|
|
|
+ report_fn, report_arg);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @ingroup iperf
|
|
|
+ * Start a TCP iperf server on a specific IP address and port and listen for
|
|
|
+ * incoming connections from iperf clients.
|
|
|
+ *
|
|
|
+ * @returns a connection handle that can be used to abort the server
|
|
|
+ * by calling @ref lwiperf_abort()
|
|
|
+ */
|
|
|
+void *
|
|
|
+lwiperf_start_tcp_server(const ip_addr_t *local_addr, u16_t local_port,
|
|
|
+ lwiperf_report_fn report_fn, void *report_arg)
|
|
|
+{
|
|
|
+ err_t err;
|
|
|
+ lwiperf_state_tcp_t *state = NULL;
|
|
|
+
|
|
|
+ err = lwiperf_start_tcp_server_impl(local_addr, local_port, report_fn, report_arg,
|
|
|
+ NULL, &state);
|
|
|
+ if (err == ERR_OK) {
|
|
|
+ return state;
|
|
|
+ }
|
|
|
+ return NULL;
|
|
|
+}
|
|
|
+
|
|
|
+static err_t lwiperf_start_tcp_server_impl(const ip_addr_t *local_addr, u16_t local_port,
|
|
|
+ lwiperf_report_fn report_fn, void *report_arg,
|
|
|
+ lwiperf_state_base_t *related_master_state, lwiperf_state_tcp_t **state)
|
|
|
+{
|
|
|
+ err_t err;
|
|
|
+ struct tcp_pcb *pcb;
|
|
|
+ lwiperf_state_tcp_t *s;
|
|
|
+
|
|
|
+ LWIP_ASSERT_CORE_LOCKED();
|
|
|
+
|
|
|
+ LWIP_ASSERT("state != NULL", state != NULL);
|
|
|
+
|
|
|
+ if (local_addr == NULL) {
|
|
|
+ return ERR_ARG;
|
|
|
+ }
|
|
|
+
|
|
|
+ s = (lwiperf_state_tcp_t *)LWIPERF_ALLOC(lwiperf_state_tcp_t);
|
|
|
+ if (s == NULL) {
|
|
|
+ return ERR_MEM;
|
|
|
+ }
|
|
|
+ memset(s, 0, sizeof(lwiperf_state_tcp_t));
|
|
|
+ s->base.tcp = 1;
|
|
|
+ s->base.server = 1;
|
|
|
+ s->base.related_master_state = related_master_state;
|
|
|
+ s->report_fn = report_fn;
|
|
|
+ s->report_arg = report_arg;
|
|
|
+
|
|
|
+ pcb = tcp_new_ip_type(LWIPERF_SERVER_IP_TYPE);
|
|
|
+ if (pcb == NULL) {
|
|
|
+ return ERR_MEM;
|
|
|
+ }
|
|
|
+ err = tcp_bind(pcb, local_addr, local_port);
|
|
|
+ if (err != ERR_OK) {
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+ s->server_pcb = tcp_listen_with_backlog(pcb, 1);
|
|
|
+ if (s->server_pcb == NULL) {
|
|
|
+ if (pcb != NULL) {
|
|
|
+ tcp_close(pcb);
|
|
|
+ }
|
|
|
+ LWIPERF_FREE(lwiperf_state_tcp_t, s);
|
|
|
+ return ERR_MEM;
|
|
|
+ }
|
|
|
+ pcb = NULL;
|
|
|
+
|
|
|
+ tcp_arg(s->server_pcb, s);
|
|
|
+ tcp_accept(s->server_pcb, lwiperf_tcp_accept);
|
|
|
+
|
|
|
+ lwiperf_list_add(&s->base);
|
|
|
+ *state = s;
|
|
|
+ return ERR_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @ingroup iperf
|
|
|
+ * Start a TCP iperf client to the default TCP port (5001).
|
|
|
+ *
|
|
|
+ * @returns a connection handle that can be used to abort the client
|
|
|
+ * by calling @ref lwiperf_abort()
|
|
|
+ */
|
|
|
+void* lwiperf_start_tcp_client_default(const ip_addr_t* remote_addr,
|
|
|
+ lwiperf_report_fn report_fn, void* report_arg)
|
|
|
+{
|
|
|
+ return lwiperf_start_tcp_client(remote_addr, LWIPERF_TCP_PORT_DEFAULT, LWIPERF_CLIENT,
|
|
|
+ report_fn, report_arg);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @ingroup iperf
|
|
|
+ * Start a TCP iperf client to a specific IP address and port.
|
|
|
+ *
|
|
|
+ * @returns a connection handle that can be used to abort the client
|
|
|
+ * by calling @ref lwiperf_abort()
|
|
|
+ */
|
|
|
+void* lwiperf_start_tcp_client(const ip_addr_t* remote_addr, u16_t remote_port,
|
|
|
+ enum lwiperf_client_type type, lwiperf_report_fn report_fn, void* report_arg)
|
|
|
+{
|
|
|
+ err_t ret;
|
|
|
+ lwiperf_settings_t settings;
|
|
|
+ lwiperf_state_tcp_t *state = NULL;
|
|
|
+
|
|
|
+ memset(&settings, 0, sizeof(settings));
|
|
|
+ switch (type) {
|
|
|
+ case LWIPERF_CLIENT:
|
|
|
+ /* Unidirectional tx only test */
|
|
|
+ settings.flags = 0;
|
|
|
+ break;
|
|
|
+ case LWIPERF_DUAL:
|
|
|
+ /* Do a bidirectional test simultaneously */
|
|
|
+ settings.flags = htonl(LWIPERF_FLAGS_ANSWER_TEST | LWIPERF_FLAGS_ANSWER_NOW);
|
|
|
+ break;
|
|
|
+ case LWIPERF_TRADEOFF:
|
|
|
+ /* Do a bidirectional test individually */
|
|
|
+ settings.flags = htonl(LWIPERF_FLAGS_ANSWER_TEST);
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ /* invalid argument */
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+ settings.num_threads = htonl(1);
|
|
|
+ settings.remote_port = htonl(LWIPERF_TCP_PORT_DEFAULT);
|
|
|
+ /* TODO: implement passing duration/amount of bytes to transfer */
|
|
|
+ settings.amount = htonl((u32_t)-1000);
|
|
|
+
|
|
|
+ ret = lwiperf_tx_start_impl(remote_addr, remote_port, &settings, report_fn, report_arg, NULL, &state);
|
|
|
+ if (ret == ERR_OK) {
|
|
|
+ LWIP_ASSERT("state != NULL", state != NULL);
|
|
|
+ if (type != LWIPERF_CLIENT) {
|
|
|
+ /* start corresponding server now */
|
|
|
+ lwiperf_state_tcp_t *server = NULL;
|
|
|
+ ret = lwiperf_start_tcp_server_impl(&state->conn_pcb->local_ip, LWIPERF_TCP_PORT_DEFAULT,
|
|
|
+ report_fn, report_arg, (lwiperf_state_base_t *)state, &server);
|
|
|
+ if (ret != ERR_OK) {
|
|
|
+ /* starting server failed, abort client */
|
|
|
+ lwiperf_abort(state);
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+ /* make this server accept one connection only */
|
|
|
+ server->specific_remote = 1;
|
|
|
+ server->remote_addr = state->conn_pcb->remote_ip;
|
|
|
+ if (type == LWIPERF_TRADEOFF) {
|
|
|
+ /* tradeoff means that the remote host connects only after the client is done,
|
|
|
+ so keep the listen pcb open until the client is done */
|
|
|
+ server->client_tradeoff_mode = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return state;
|
|
|
+ }
|
|
|
+ return NULL;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @ingroup iperf
|
|
|
+ * Abort an iperf session (handle returned by lwiperf_start_tcp_server*())
|
|
|
+ */
|
|
|
+void
|
|
|
+lwiperf_abort(void *lwiperf_session)
|
|
|
+{
|
|
|
+ lwiperf_state_base_t *i, *dealloc, *last = NULL;
|
|
|
+
|
|
|
+ LWIP_ASSERT_CORE_LOCKED();
|
|
|
+
|
|
|
+ for (i = lwiperf_all_connections; i != NULL; ) {
|
|
|
+ if ((i == lwiperf_session) || (i->related_master_state == lwiperf_session)) {
|
|
|
+ dealloc = i;
|
|
|
+ i = i->next;
|
|
|
+ if (last != NULL) {
|
|
|
+ last->next = i;
|
|
|
+ }
|
|
|
+ LWIPERF_FREE(lwiperf_state_tcp_t, dealloc); /* @todo: type? */
|
|
|
+ } else {
|
|
|
+ last = i;
|
|
|
+ i = i->next;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+#endif /* LWIP_TCP && LWIP_CALLBACK_API */
|