mongoose/test/freertos-tcp/include/FreeRTOS_Sockets.h

521 lines
23 KiB
C

/*
* FreeRTOS+TCP V2.3.2
* 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://aws.amazon.com/freertos
* http://www.FreeRTOS.org
*/
#ifndef FREERTOS_SOCKETS_H
#define FREERTOS_SOCKETS_H
#ifdef __cplusplus
extern "C" {
#endif
/* Standard includes. */
#include <string.h>
/* Application level configuration options. */
#include "FreeRTOSIPConfig.h"
#ifndef FREERTOS_IP_CONFIG_H
#error FreeRTOSIPConfig.h has not been included yet
#endif
/* Event bit definitions are required by the select functions. */
#include "event_groups.h"
#ifndef INC_FREERTOS_H
#error FreeRTOS.h must be included before FreeRTOS_Sockets.h.
#endif
#ifndef INC_TASK_H
#ifndef TASK_H /* For compatibility with older FreeRTOS versions. */
#error The FreeRTOS header file task.h must be included before FreeRTOS_Sockets.h.
#endif
#endif
/* Assigned to an Socket_t variable when the socket is not valid, probably
* because it could not be created. */
#define FREERTOS_INVALID_SOCKET ( ( Socket_t ) ~0U )
/* API function error values. As errno is supported, the FreeRTOS sockets
* functions return error codes rather than just a pass or fail indication. */
/* HT: Extended the number of error codes, gave them positive values and if possible
* the corresponding found in errno.h
* In case of an error, API's will still return negative numbers, e.g.
* return -pdFREERTOS_ERRNO_EWOULDBLOCK;
* in case an operation would block */
/* The following defines are obsolete, please use -pdFREERTOS_ERRNO_Exxx */
#define FREERTOS_SOCKET_ERROR ( -1 )
#define FREERTOS_EWOULDBLOCK ( -pdFREERTOS_ERRNO_EWOULDBLOCK )
#define FREERTOS_EINVAL ( -pdFREERTOS_ERRNO_EINVAL )
#define FREERTOS_EADDRNOTAVAIL ( -pdFREERTOS_ERRNO_EADDRNOTAVAIL )
#define FREERTOS_EADDRINUSE ( -pdFREERTOS_ERRNO_EADDRINUSE )
#define FREERTOS_ENOBUFS ( -pdFREERTOS_ERRNO_ENOBUFS )
#define FREERTOS_ENOPROTOOPT ( -pdFREERTOS_ERRNO_ENOPROTOOPT )
#define FREERTOS_ECLOSED ( -pdFREERTOS_ERRNO_ENOTCONN )
/* Values for the parameters to FreeRTOS_socket(), inline with the Berkeley
* standard. See the documentation of FreeRTOS_socket() for more information. */
#define FREERTOS_AF_INET ( 2 )
#define FREERTOS_AF_INET6 ( 10 )
#define FREERTOS_SOCK_DGRAM ( 2 )
#define FREERTOS_IPPROTO_UDP ( 17 )
#define FREERTOS_SOCK_STREAM ( 1 )
#define FREERTOS_IPPROTO_TCP ( 6 )
/* IP packet of type "Any local network"
* can be used in stead of TCP for testing with sockets in raw mode
*/
#define FREERTOS_IPPROTO_USR_LAN ( 63 )
/* A bit value that can be passed into the FreeRTOS_sendto() function as part of
* the flags parameter. Setting the FREERTOS_ZERO_COPY in the flags parameter
* indicates that the zero copy interface is being used. See the documentation for
* FreeRTOS_sockets() for more information. */
#define FREERTOS_ZERO_COPY ( 1 )
/* Values that can be passed in the option name parameter of calls to
* FreeRTOS_setsockopt(). */
#define FREERTOS_SO_RCVTIMEO ( 0 ) /* Used to set the receive time out. */
#define FREERTOS_SO_SNDTIMEO ( 1 ) /* Used to set the send time out. */
#define FREERTOS_SO_UDPCKSUM_OUT ( 2 ) /* Used to turn the use of the UDP checksum by a socket on or off. This also doubles as part of an 8-bit bitwise socket option. */
#if ( ipconfigSOCKET_HAS_USER_SEMAPHORE == 1 )
#define FREERTOS_SO_SET_SEMAPHORE ( 3 ) /* Used to set a user's semaphore */
#endif
#define FREERTOS_SO_SNDBUF ( 4 ) /* Set the size of the send buffer (TCP only) */
#define FREERTOS_SO_RCVBUF ( 5 ) /* Set the size of the receive buffer (TCP only) */
#if ipconfigUSE_CALLBACKS == 1
#define FREERTOS_SO_TCP_CONN_HANDLER ( 6 ) /* Install a callback for (dis) connection events. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
#define FREERTOS_SO_TCP_RECV_HANDLER ( 7 ) /* Install a callback for receiving TCP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
#define FREERTOS_SO_TCP_SENT_HANDLER ( 8 ) /* Install a callback for sending TCP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
#define FREERTOS_SO_UDP_RECV_HANDLER ( 9 ) /* Install a callback for receiving UDP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
#define FREERTOS_SO_UDP_SENT_HANDLER ( 10 ) /* Install a callback for sending UDP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
#endif /* ipconfigUSE_CALLBACKS */
#define FREERTOS_SO_REUSE_LISTEN_SOCKET ( 11 ) /* When a listening socket gets connected, do not create a new one but re-use it */
#define FREERTOS_SO_CLOSE_AFTER_SEND ( 12 ) /* As soon as the last byte has been transmitted, finalise the connection */
#define FREERTOS_SO_WIN_PROPERTIES ( 13 ) /* Set all buffer and window properties in one call, parameter is pointer to WinProperties_t */
#define FREERTOS_SO_SET_FULL_SIZE ( 14 ) /* Refuse to send packets smaller than MSS */
#define FREERTOS_SO_STOP_RX ( 15 ) /* Temporarily hold up reception, used by streaming client */
#if ( ipconfigUDP_MAX_RX_PACKETS > 0 )
#define FREERTOS_SO_UDP_MAX_RX_PACKETS ( 16 ) /* This option helps to limit the maximum number of packets a UDP socket will buffer */
#endif
#if ( ipconfigSOCKET_HAS_USER_WAKE_CALLBACK == 1 )
#define FREERTOS_SO_WAKEUP_CALLBACK ( 17 )
#endif
#define FREERTOS_SO_SET_LOW_HIGH_WATER ( 18 )
#define FREERTOS_NOT_LAST_IN_FRAGMENTED_PACKET ( 0x80 ) /* For internal use only, but also part of an 8-bit bitwise value. */
#define FREERTOS_FRAGMENTED_PACKET ( 0x40 ) /* For internal use only, but also part of an 8-bit bitwise value. */
/* Values for flag for FreeRTOS_shutdown(). */
#define FREERTOS_SHUT_RD ( 0 ) /* Not really at this moment, just for compatibility of the interface */
#define FREERTOS_SHUT_WR ( 1 )
#define FREERTOS_SHUT_RDWR ( 2 )
/* Values for flag for FreeRTOS_recv(). */
#define FREERTOS_MSG_OOB ( 2 ) /* process out-of-band data */
#define FREERTOS_MSG_PEEK ( 4 ) /* peek at incoming message */
#define FREERTOS_MSG_DONTROUTE ( 8 ) /* send without using routing tables */
#define FREERTOS_MSG_DONTWAIT ( 16 ) /* Can be used with recvfrom(), sendto(), recv(), and send(). */
/**
* Structure to hold the properties of Tx/Rx buffers and windows.
*/
typedef struct xWIN_PROPS
{
/* Properties of the Tx buffer and Tx window */
int32_t lTxBufSize; /**< Unit: bytes */
int32_t lTxWinSize; /**< Unit: MSS */
/* Properties of the Rx buffer and Rx window */
int32_t lRxBufSize; /**< Unit: bytes */
int32_t lRxWinSize; /**< Unit: MSS */
} WinProperties_t;
/**
* Structure to pass for the 'FREERTOS_SO_SET_LOW_HIGH_WATER' option
*/
typedef struct xLOW_HIGH_WATER
{
size_t uxLittleSpace; /**< Send a STOP when buffer space drops below X bytes */
size_t uxEnoughSpace; /**< Send a GO when buffer space grows above X bytes */
} LowHighWater_t;
/* For compatibility with the expected Berkeley sockets naming. */
#define socklen_t uint32_t
/**
* For this limited implementation, only two members are required in the
* Berkeley style sockaddr structure.
*/
struct freertos_sockaddr
{
/* _HT_ On 32- and 64-bit architectures, the addition of the two uint8_t
* fields doesn't make the structure bigger, due to alignment.
* The fields are inserted as a preparation for IPv6. */
/* sin_len and sin_family not used in the IPv4-only release. */
uint8_t sin_len; /**< length of this structure. */
uint8_t sin_family; /**< FREERTOS_AF_INET. */
uint16_t sin_port; /**< The port */
uint32_t sin_addr; /**< The IP address */
};
extern const char * FreeRTOS_inet_ntoa( uint32_t ulIPAddress,
char * pcBuffer );
#if ipconfigBYTE_ORDER == pdFREERTOS_LITTLE_ENDIAN
#define FreeRTOS_inet_addr_quick( ucOctet0, ucOctet1, ucOctet2, ucOctet3 ) \
( ( ( ( uint32_t ) ( ucOctet3 ) ) << 24UL ) | \
( ( ( uint32_t ) ( ucOctet2 ) ) << 16UL ) | \
( ( ( uint32_t ) ( ucOctet1 ) ) << 8UL ) | \
( ( uint32_t ) ( ucOctet0 ) ) )
#else /* ipconfigBYTE_ORDER */
#define FreeRTOS_inet_addr_quick( ucOctet0, ucOctet1, ucOctet2, ucOctet3 ) \
( ( ( ( uint32_t ) ( ucOctet0 ) ) << 24UL ) | \
( ( ( uint32_t ) ( ucOctet1 ) ) << 16UL ) | \
( ( ( uint32_t ) ( ucOctet2 ) ) << 8UL ) | \
( ( uint32_t ) ( ucOctet3 ) ) )
#endif /* ipconfigBYTE_ORDER */
/* The socket type itself. */
struct xSOCKET;
typedef struct xSOCKET * Socket_t;
typedef struct xSOCKET const * ConstSocket_t;
static portINLINE BaseType_t xSocketValid( Socket_t xSocket )
{
BaseType_t xReturnValue = pdFALSE;
/*
* There are two values which can indicate an invalid socket:
* FREERTOS_INVALID_SOCKET and NULL. In order to compare against
* both values, the code cannot be compliant with rule 11.4,
* hence the Coverity suppression statement below.
*/
/* coverity[misra_c_2012_rule_11_4_violation] */
if( ( xSocket != FREERTOS_INVALID_SOCKET ) && ( xSocket != NULL ) )
{
xReturnValue = pdTRUE;
}
return xReturnValue;
}
#if ( ipconfigSUPPORT_SELECT_FUNCTION == 1 )
/* The SocketSet_t type is the equivalent to the fd_set type used by the
* Berkeley API. */
struct xSOCKET_SET;
typedef struct xSOCKET_SET * SocketSet_t;
#endif /* ( ipconfigSUPPORT_SELECT_FUNCTION == 1 ) */
/**
* FULL, UP-TO-DATE AND MAINTAINED REFERENCE DOCUMENTATION FOR ALL THESE
* FUNCTIONS IS AVAILABLE ON THE FOLLOWING URL:
* http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/FreeRTOS_TCP_API_Functions.html
*/
Socket_t FreeRTOS_socket( BaseType_t xDomain,
BaseType_t xType,
BaseType_t xProtocol );
int32_t FreeRTOS_recvfrom( Socket_t xSocket,
void * pvBuffer,
size_t uxBufferLength,
BaseType_t xFlags,
struct freertos_sockaddr * pxSourceAddress,
socklen_t * pxSourceAddressLength );
int32_t FreeRTOS_sendto( Socket_t xSocket,
const void * pvBuffer,
size_t uxTotalDataLength,
BaseType_t xFlags,
const struct freertos_sockaddr * pxDestinationAddress,
socklen_t xDestinationAddressLength );
BaseType_t FreeRTOS_bind( Socket_t xSocket,
struct freertos_sockaddr const * pxAddress,
socklen_t xAddressLength );
/* function to get the local address and IP port */
size_t FreeRTOS_GetLocalAddress( ConstSocket_t xSocket,
struct freertos_sockaddr * pxAddress );
#if ( ipconfigETHERNET_DRIVER_FILTERS_PACKETS == 1 )
/* Returns true if an UDP socket exists bound to mentioned port number. */
BaseType_t xPortHasUDPSocket( uint16_t usPortNr );
#endif
#if ipconfigUSE_TCP == 1
BaseType_t FreeRTOS_connect( Socket_t xClientSocket,
struct freertos_sockaddr * pxAddress,
socklen_t xAddressLength );
BaseType_t FreeRTOS_listen( Socket_t xSocket,
BaseType_t xBacklog );
BaseType_t FreeRTOS_recv( Socket_t xSocket,
void * pvBuffer,
size_t uxBufferLength,
BaseType_t xFlags );
BaseType_t FreeRTOS_send( Socket_t xSocket,
const void * pvBuffer,
size_t uxDataLength,
BaseType_t xFlags );
Socket_t FreeRTOS_accept( Socket_t xServerSocket,
struct freertos_sockaddr * pxAddress,
socklen_t * pxAddressLength );
BaseType_t FreeRTOS_shutdown( Socket_t xSocket,
BaseType_t xHow );
#if ( ipconfigSUPPORT_SIGNALS != 0 )
/* Send a signal to the task which is waiting for a given socket. */
BaseType_t FreeRTOS_SignalSocket( Socket_t xSocket );
/* Send a signal to the task which reads from this socket (FromISR
* version). */
BaseType_t FreeRTOS_SignalSocketFromISR( Socket_t xSocket,
BaseType_t * pxHigherPriorityTaskWoken );
#endif /* ipconfigSUPPORT_SIGNALS */
/* Return the remote address and IP port. */
BaseType_t FreeRTOS_GetRemoteAddress( ConstSocket_t xSocket,
struct freertos_sockaddr * pxAddress );
#if ( ipconfigUSE_TCP == 1 )
/* Returns pdTRUE if TCP socket is connected. */
BaseType_t FreeRTOS_issocketconnected( ConstSocket_t xSocket );
/* Returns the actual size of MSS being used. */
BaseType_t FreeRTOS_mss( ConstSocket_t xSocket );
#endif /* ( ipconfigUSE_TCP == 1 ) */
/* For internal use only: return the connection status. */
BaseType_t FreeRTOS_connstatus( ConstSocket_t xSocket );
/* Returns the number of bytes that may be added to txStream */
BaseType_t FreeRTOS_maywrite( ConstSocket_t xSocket );
/*
* Two helper functions, mostly for testing
* rx_size returns the number of bytes available in the Rx buffer
* tx_space returns the free space in the Tx buffer
*/
#if ( ipconfigUSE_TCP == 1 )
BaseType_t FreeRTOS_rx_size( ConstSocket_t xSocket );
BaseType_t FreeRTOS_tx_space( ConstSocket_t xSocket );
BaseType_t FreeRTOS_tx_size( ConstSocket_t xSocket );
#endif
/* Returns the number of outstanding bytes in txStream. */
/* The function FreeRTOS_outstanding() was already implemented
* FreeRTOS_tx_size(). */
#define FreeRTOS_outstanding( xSocket ) FreeRTOS_tx_size( xSocket )
/* Returns the number of bytes in the socket's rxStream. */
/* The function FreeRTOS_recvcount() was already implemented
* FreeRTOS_rx_size(). */
#define FreeRTOS_recvcount( xSocket ) FreeRTOS_rx_size( xSocket )
/*
* For advanced applications only:
* Get a direct pointer to the circular transmit buffer.
* '*pxLength' will contain the number of bytes that may be written.
*/
uint8_t * FreeRTOS_get_tx_head( ConstSocket_t xSocket,
BaseType_t * pxLength );
#endif /* ipconfigUSE_TCP */
#if ( ipconfigUSE_CALLBACKS != 0 )
/*
* Connect / disconnect handler for a TCP socket
* For example:
* static void vMyConnectHandler (Socket_t xSocket, BaseType_t ulConnected)
* {
* }
* F_TCP_UDP_Handler_t xHnd = { vMyConnectHandler };
* FreeRTOS_setsockopt( sock, 0, FREERTOS_SO_TCP_CONN_HANDLER, ( void * ) &xHnd, sizeof( xHnd ) );
*/
#ifdef __COVERITY__
typedef void (* FOnConnected_t )( Socket_t xSocket,
BaseType_t ulConnected );
#else
typedef void (* FOnConnected_t )( Socket_t,
BaseType_t );
#endif
/*
* Reception handler for a TCP socket
* A user-proved function will be called on reception of a message
* If the handler returns a positive number, the messages will not be stored
* For example:
* static BaseType_t xOnTCPReceive( Socket_t xSocket, void * pData, size_t uxLength )
* {
* // handle the message
* return 1;
* }
* F_TCP_UDP_Handler_t xHand = { xOnTCPReceive };
* FreeRTOS_setsockopt( sock, 0, FREERTOS_SO_TCP_RECV_HANDLER, ( void * ) &xHand, sizeof( xHand ) );
*/
#ifdef __COVERITY__
typedef BaseType_t (* FOnTCPReceive_t )( Socket_t xSocket,
void * pData,
size_t xLength );
typedef void (* FOnTCPSent_t )( Socket_t xSocket,
size_t xLength );
#else
typedef BaseType_t (* FOnTCPReceive_t )( Socket_t,
void *,
size_t );
typedef void (* FOnTCPSent_t )( Socket_t,
size_t );
#endif /* ifdef __COVERITY__ */
/*
* Reception handler for a UDP socket
* A user-proved function will be called on reception of a message
* If the handler returns a positive number, the messages will not be stored
*/
#ifdef __COVERITY__
typedef BaseType_t (* FOnUDPReceive_t ) ( Socket_t xSocket,
void * pData,
size_t xLength,
const struct freertos_sockaddr * pxFrom,
const struct freertos_sockaddr * pxDest );
typedef void (* FOnUDPSent_t )( Socket_t xSocket,
size_t xLength );
#else
typedef BaseType_t (* FOnUDPReceive_t ) ( Socket_t,
void *,
size_t,
const struct freertos_sockaddr *,
const struct freertos_sockaddr * );
typedef void (* FOnUDPSent_t )( Socket_t,
size_t );
#endif /* ifdef __COVERITY__ */
typedef union xTCP_UDP_HANDLER
{
FOnConnected_t pxOnTCPConnected; /* FREERTOS_SO_TCP_CONN_HANDLER */
FOnTCPReceive_t pxOnTCPReceive; /* FREERTOS_SO_TCP_RECV_HANDLER */
FOnTCPSent_t pxOnTCPSent; /* FREERTOS_SO_TCP_SENT_HANDLER */
FOnUDPReceive_t pxOnUDPReceive; /* FREERTOS_SO_UDP_RECV_HANDLER */
FOnUDPSent_t pxOnUDPSent; /* FREERTOS_SO_UDP_SENT_HANDLER */
} F_TCP_UDP_Handler_t;
#endif /* ( ipconfigUSE_CALLBACKS != 0 ) */
BaseType_t FreeRTOS_setsockopt( Socket_t xSocket,
int32_t lLevel,
int32_t lOptionName,
const void * pvOptionValue,
size_t uxOptionLength );
BaseType_t FreeRTOS_closesocket( Socket_t xSocket );
/* The following function header should be placed in FreeRTOS_DNS.h.
* It is kept here because some applications expect it in FreeRTOS_Sockets.h.*/
#ifndef __COVERITY__
uint32_t FreeRTOS_gethostbyname( const char * pcHostName );
#endif
BaseType_t FreeRTOS_inet_pton( BaseType_t xAddressFamily,
const char * pcSource,
void * pvDestination );
const char * FreeRTOS_inet_ntop( BaseType_t xAddressFamily,
const void * pvSource,
char * pcDestination,
socklen_t uxSize );
/* Convert a null-terminated string in dot-decimal-notation (d.d.d.d) to a 32-bit unsigned integer. */
uint32_t FreeRTOS_inet_addr( const char * pcIPAddress );
BaseType_t FreeRTOS_inet_pton4( const char * pcSource,
void * pvDestination );
const char * FreeRTOS_inet_ntop4( const void * pvSource,
char * pcDestination,
socklen_t uxSize );
/*
* For the web server: borrow the circular Rx buffer for inspection
* HTML driver wants to see if a sequence of 13/10/13/10 is available
*/
const struct xSTREAM_BUFFER * FreeRTOS_get_rx_buf( ConstSocket_t xSocket );
void FreeRTOS_netstat( void );
#if ipconfigSUPPORT_SELECT_FUNCTION == 1
/* For FD_SET and FD_CLR, a combination of the following bits can be used: */
typedef enum eSELECT_EVENT
{
eSELECT_READ = 0x0001,
eSELECT_WRITE = 0x0002,
eSELECT_EXCEPT = 0x0004,
eSELECT_INTR = 0x0008,
eSELECT_ALL = 0x000F,
/* Reserved for internal use: */
eSELECT_CALL_IP = 0x0010,
/* end */
} eSelectEvent_t;
SocketSet_t FreeRTOS_CreateSocketSet( void );
void FreeRTOS_DeleteSocketSet( SocketSet_t xSocketSet );
void FreeRTOS_FD_SET( Socket_t xSocket,
SocketSet_t xSocketSet,
EventBits_t xBitsToSet );
void FreeRTOS_FD_CLR( Socket_t xSocket,
SocketSet_t xSocketSet,
EventBits_t xBitsToClear );
EventBits_t FreeRTOS_FD_ISSET( Socket_t xSocket,
SocketSet_t xSocketSet );
BaseType_t FreeRTOS_select( SocketSet_t xSocketSet,
TickType_t xBlockTimeTicks );
#endif /* ipconfigSUPPORT_SELECT_FUNCTION */
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* FREERTOS_SOCKETS_H */