diff options
Diffstat (limited to 'FreeRTOS/Demo/Posix_GCC/src/main_networking.c')
| -rw-r--r-- | FreeRTOS/Demo/Posix_GCC/src/main_networking.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/Posix_GCC/src/main_networking.c b/FreeRTOS/Demo/Posix_GCC/src/main_networking.c new file mode 100644 index 000000000..edb589720 --- /dev/null +++ b/FreeRTOS/Demo/Posix_GCC/src/main_networking.c @@ -0,0 +1,321 @@ +/* + * FreeRTOS Kernel V10.3.0 + * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy of + * this software and associated documentation files (the "Software"), to deal in + * the Software without restriction, including without limitation the rights to + * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of + * the Software, and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR + * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * http://www.FreeRTOS.org + * http://aws.amazon.com/freertos + * + * 1 tab == 4 spaces! + */ + +/* + * This project is a cut down version of the project described on the following + * link. Only the simple UDP client and server and the TCP echo clients are + * included in the build: + * http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/examples_FreeRTOS_simulator.html + */ + +/* Standard includes. */ +#include <stdio.h> +#include <time.h> +#include <unistd.h> + +/* FreeRTOS includes. */ +#include <FreeRTOS.h> +#include "task.h" + +/* Demo application includes. */ +#include "FreeRTOS_IP.h" +#include "FreeRTOS_Sockets.h" +/*#include "SimpleUDPClientAndServer.h" */ +/*#include "SimpleTCPEchoServer.h" */ +/*#include "TCPEchoClient_SingleTasks.h" */ +/*#include "demo_logging.h" */ +#include "TCPEchoClient_SingleTasks.h" + +/* Simple UDP client and server task parameters. */ +#define mainSIMPLE_UDP_CLIENT_SERVER_TASK_PRIORITY ( tskIDLE_PRIORITY ) +#define mainSIMPLE_UDP_CLIENT_SERVER_PORT ( 5005UL ) + +/* Echo client task parameters - used for both TCP and UDP echo clients. */ +#define mainECHO_CLIENT_TASK_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 ) /* Not used in the linux port. */ +#define mainECHO_CLIENT_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 ) + +/* Echo server task parameters. */ +#define mainECHO_SERVER_TASK_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 ) /* Not used in the linux port. */ +#define mainECHO_SERVER_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 ) + +/* Define a name that will be used for LLMNR and NBNS searches. */ +#define mainHOST_NAME "RTOSDemo" +#define mainDEVICE_NICK_NAME "linux_demo" + +/* Set the following constants to 1 or 0 to define which tasks to include and +exclude: + +mainCREATE_TCP_ECHO_TASKS_SINGLE: When set to 1 a set of tasks are created that +send TCP echo requests to the standard echo port (port 7), then wait for and +verify the echo reply, from within the same task (Tx and Rx are performed in the +same RTOS task). The IP address of the echo server must be configured using the +configECHO_SERVER_ADDR0 to configECHO_SERVER_ADDR3 constants in +FreeRTOSConfig.h. + +*/ +#define mainCREATE_TCP_ECHO_TASKS_SINGLE 1 +/*-----------------------------------------------------------*/ + +/* + * Just seeds the simple pseudo random number generator. + */ +static void prvSRand( UBaseType_t ulSeed ); + +/* + * Miscellaneous initialisation including preparing the logging and seeding the + * random number generator. + */ +static void prvMiscInitialisation( void ); + +/* The default IP and MAC address used by the demo. The address configuration +defined here will be used if ipconfigUSE_DHCP is 0, or if ipconfigUSE_DHCP is +1 but a DHCP server could not be contacted. See the online documentation for +more information. */ +static const uint8_t ucIPAddress[ 4 ] = { configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 }; +static const uint8_t ucNetMask[ 4 ] = { configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 }; +static const uint8_t ucGatewayAddress[ 4 ] = { configGATEWAY_ADDR0, configGATEWAY_ADDR1, configGATEWAY_ADDR2, configGATEWAY_ADDR3 }; +static const uint8_t ucDNSServerAddress[ 4 ] = { configDNS_SERVER_ADDR0, configDNS_SERVER_ADDR1, configDNS_SERVER_ADDR2, configDNS_SERVER_ADDR3 }; + +/* Set the following constant to pdTRUE to log using the method indicated by the +name of the constant, or pdFALSE to not log using the method indicated by the +name of the constant. Options include to standard out (xLogToStdout), to a disk +file (xLogToFile), and to a UDP port (xLogToUDP). If xLogToUDP is set to pdTRUE +then UDP messages are sent to the IP address configured as the echo server +address (see the configECHO_SERVER_ADDR0 definitions in FreeRTOSConfig.h) and +the port number set by configPRINT_PORT in FreeRTOSConfig.h. */ +const BaseType_t xLogToStdout = pdTRUE, xLogToFile = pdFALSE, xLogToUDP = pdFALSE; + +/* Default MAC address configuration. The demo creates a virtual network +connection that uses this MAC address by accessing the raw Ethernet data +to and from a real network connection on the host PC. See the +configNETWORK_INTERFACE_TO_USE definition for information on how to configure +the real network connection to use. */ +const uint8_t ucMACAddress[ 6 ] = { configMAC_ADDR0, configMAC_ADDR1, configMAC_ADDR2, configMAC_ADDR3, configMAC_ADDR4, configMAC_ADDR5 }; + +/* Use by the pseudo random number generator. */ +static UBaseType_t ulNextRand; + +/*-----------------------------------------------------------*/ + +void main_tcp_echo_client_tasks( void ) +{ +const uint32_t ulLongTime_ms = pdMS_TO_TICKS( 1000UL ); + + /* + * Instructions for using this project are provided on: + * http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/examples_FreeRTOS_simulator.html + */ + + /* Miscellaneous initialisation including preparing the logging and seeding + the random number generator. */ + prvMiscInitialisation(); + + /* Initialise the network interface. + + ***NOTE*** Tasks that use the network are created in the network event hook + when the network is connected and ready for use (see the definition of + vApplicationIPNetworkEventHook() below). The address values passed in here + are used if ipconfigUSE_DHCP is set to 0, or if ipconfigUSE_DHCP is set to 1 + but a DHCP server cannot be contacted. */ + FreeRTOS_debug_printf( ( "FreeRTOS_IPInit\n" ) ); + FreeRTOS_IPInit( ucIPAddress, + ucNetMask, + ucGatewayAddress, + ucDNSServerAddress, + ucMACAddress ); + + /* Start the RTOS scheduler. */ + FreeRTOS_debug_printf( ( "vTaskStartScheduler\n" ) ); + vTaskStartScheduler(); + FreeRTOS_debug_printf( ( "Should not reach this point after scheduler\n" ) ); + + /* If all is well, the scheduler will now be running, and the following + line will never be reached. If the following line does execute, then + there was insufficient FreeRTOS heap memory available for the idle and/or + timer tasks to be created. See the memory management section on the + FreeRTOS web site for more details (this is standard text that is not not + really applicable to the Win32 simulator port). */ + for( ; ; ) + { + usleep( ulLongTime_ms * 1000 ); + } +} +/*-----------------------------------------------------------*/ + +/* Called by FreeRTOS+TCP when the network connects or disconnects. Disconnect +events are only received if implemented in the MAC driver. */ +void vApplicationIPNetworkEventHook( eIPCallbackEvent_t eNetworkEvent ) +{ +uint32_t ulIPAddress, ulNetMask, ulGatewayAddress, ulDNSServerAddress; +char cBuffer[ 16 ]; +static BaseType_t xTasksAlreadyCreated = pdFALSE; + + /* If the network has just come up...*/ + if( eNetworkEvent == eNetworkUp ) + { + /* Create the tasks that use the IP stack if they have not already been + created. */ + if( xTasksAlreadyCreated == pdFALSE ) + { + /* See the comments above the definitions of these pre-processor + macros at the top of this file for a description of the individual + demo tasks. */ + + #if ( mainCREATE_TCP_ECHO_TASKS_SINGLE == 1 ) + { + vStartTCPEchoClientTasks_SingleTasks( mainECHO_CLIENT_TASK_STACK_SIZE, mainECHO_CLIENT_TASK_PRIORITY ); + } + #endif /* mainCREATE_TCP_ECHO_TASKS_SINGLE */ + + xTasksAlreadyCreated = pdTRUE; + } + + /* Print out the network configuration, which may have come from a DHCP + server. */ + FreeRTOS_GetAddressConfiguration( &ulIPAddress, &ulNetMask, &ulGatewayAddress, &ulDNSServerAddress ); + FreeRTOS_inet_ntoa( ulIPAddress, cBuffer ); + FreeRTOS_printf( ( "\r\n\r\nIP Address: %s\r\n", cBuffer ) ); + + FreeRTOS_inet_ntoa( ulNetMask, cBuffer ); + FreeRTOS_printf( ( "Subnet Mask: %s\r\n", cBuffer ) ); + + FreeRTOS_inet_ntoa( ulGatewayAddress, cBuffer ); + FreeRTOS_printf( ( "Gateway Address: %s\r\n", cBuffer ) ); + + FreeRTOS_inet_ntoa( ulDNSServerAddress, cBuffer ); + FreeRTOS_printf( ( "DNS Server Address: %s\r\n\r\n\r\n", cBuffer ) ); + } + else + { + printf( "application iddle hook network down\n" ); + } +} +/*-----------------------------------------------------------*/ + +UBaseType_t uxRand( void ) +{ +const uint32_t ulMultiplier = 0x015a4e35UL, ulIncrement = 1UL; + + /* Utility function to generate a pseudo random number. */ + + ulNextRand = ( ulMultiplier * ulNextRand ) + ulIncrement; + return( ( int ) ( ulNextRand >> 16UL ) & 0x7fffUL ); +} +/*-----------------------------------------------------------*/ + +static void prvSRand( UBaseType_t ulSeed ) +{ + /* Utility function to seed the pseudo random number generator. */ + ulNextRand = ulSeed; +} +/*-----------------------------------------------------------*/ + +static void prvMiscInitialisation( void ) +{ +time_t xTimeNow; + + /* Seed the random number generator. */ + time( &xTimeNow ); + FreeRTOS_debug_printf( ( "Seed for randomiser: %lu\n", xTimeNow ) ); + prvSRand( ( uint32_t ) xTimeNow ); + FreeRTOS_debug_printf( ( "Random numbers: %08X %08X %08X %08X\n", + ipconfigRAND32(), + ipconfigRAND32(), + ipconfigRAND32(), + ipconfigRAND32() ) ); +} +/*-----------------------------------------------------------*/ + +#if ( ipconfigUSE_LLMNR != 0 ) || ( ipconfigUSE_NBNS != 0 ) || ( ipconfigDHCP_REGISTER_HOSTNAME == 1 ) + + const char * pcApplicationHostnameHook( void ) + { + /* Assign the name "FreeRTOS" to this network node. This function will + be called during the DHCP: the machine will be registered with an IP + address plus this name. */ + return mainHOST_NAME; + } + +#endif +/*-----------------------------------------------------------*/ + +#if ( ipconfigUSE_LLMNR != 0 ) || ( ipconfigUSE_NBNS != 0 ) + + BaseType_t xApplicationDNSQueryHook( const char *pcName ) + { + BaseType_t xReturn; + + /* Determine if a name lookup is for this node. Two names are given + to this node: that returned by pcApplicationHostnameHook() and that set + by mainDEVICE_NICK_NAME. */ + if( strcasecmp( pcName, pcApplicationHostnameHook() ) == 0 ) + { + xReturn = pdPASS; + } + else if( strcasecmp( pcName, mainDEVICE_NICK_NAME ) == 0 ) + { + xReturn = pdPASS; + } + else + { + xReturn = pdFAIL; + } + + return xReturn; + } + +#endif /* if ( ipconfigUSE_LLMNR != 0 ) || ( ipconfigUSE_NBNS != 0 ) */ + +/* + * Callback that provides the inputs necessary to generate a randomized TCP + * Initial Sequence Number per RFC 6528. THIS IS ONLY A DUMMY IMPLEMENTATION + * THAT RETURNS A PSEUDO RANDOM NUMBER SO IS NOT INTENDED FOR USE IN PRODUCTION + * SYSTEMS. + */ +extern uint32_t ulApplicationGetNextSequenceNumber( uint32_t ulSourceAddress, + uint16_t usSourcePort, + uint32_t ulDestinationAddress, + uint16_t usDestinationPort ) +{ + ( void ) ulSourceAddress; + ( void ) usSourcePort; + ( void ) ulDestinationAddress; + ( void ) usDestinationPort; + + return uxRand(); +} + +/* + * Supply a random number to FreeRTOS+TCP stack. + * THIS IS ONLY A DUMMY IMPLEMENTATION THAT RETURNS A PSEUDO RANDOM NUMBER + * SO IS NOT INTENDED FOR USE IN PRODUCTION SYSTEMS. + */ +BaseType_t xApplicationGetRandomNumber( uint32_t * pulNumber ) +{ + *( pulNumber ) = uxRand(); + return pdTRUE; +} |