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63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "queue.h"
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/* FreeRTOS+TCP includes. */
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#include "FreeRTOS_IP.h"
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#include "FreeRTOS_IP_Private.h"
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#include "FreeRTOS_TCP_IP.h"
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#include "FreeRTOS_Stream_Buffer.h"
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/* This proof assumes FreeRTOS_socket, pxTCPSocketLookup and
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pxGetNetworkBufferWithDescriptor are implemented correctly.
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It also assumes prvSingleStepTCPHeaderOptions, prvCheckOptions, prvTCPPrepareSend,
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prvTCPHandleState and prvTCPReturnPacket are correct. These functions are
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proved to be correct separately. */
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/* Implementation of safe malloc */
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void *safeMalloc(size_t xWantedSize ){
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if(xWantedSize == 0){
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return NULL;
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}
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uint8_t byte;
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return byte ? malloc(xWantedSize) : NULL;
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}
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/* Abstraction of FreeRTOS_socket */
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Socket_t FreeRTOS_socket( BaseType_t xDomain, BaseType_t xType, BaseType_t xProtocol) {
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return safeMalloc(sizeof(FreeRTOS_Socket_t));
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}
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/* Abstraction of pxTCPSocketLookup */
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FreeRTOS_Socket_t *pxTCPSocketLookup(uint32_t ulLocalIP, UBaseType_t uxLocalPort, uint32_t ulRemoteIP, UBaseType_t uxRemotePort) {
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FreeRTOS_Socket_t * xRetSocket = safeMalloc(sizeof(FreeRTOS_Socket_t));
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if (xRetSocket) {
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xRetSocket->u.xTCP.txStream = safeMalloc(sizeof(StreamBuffer_t));
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xRetSocket->u.xTCP.pxPeerSocket = safeMalloc(sizeof(StreamBuffer_t));
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}
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return xRetSocket;
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}
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/* Abstraction of pxGetNetworkBufferWithDescriptor */
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NetworkBufferDescriptor_t *pxGetNetworkBufferWithDescriptor( size_t xRequestedSizeBytes, TickType_t xBlockTimeTicks ){
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NetworkBufferDescriptor_t *pxNetworkBuffer = safeMalloc(sizeof(NetworkBufferDescriptor_t));
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if(pxNetworkBuffer) {
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pxNetworkBuffer->pucEthernetBuffer = safeMalloc(xRequestedSizeBytes);
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__CPROVER_assume(pxNetworkBuffer->xDataLength == ipSIZE_OF_ETH_HEADER + sizeof(int32_t));
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}
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return pxNetworkBuffer;
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}
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void harness() {
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NetworkBufferDescriptor_t *pxNetworkBuffer = safeMalloc(sizeof(NetworkBufferDescriptor_t));
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if (pxNetworkBuffer) {
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pxNetworkBuffer->pucEthernetBuffer = safeMalloc(sizeof(TCPPacket_t));
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}
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if (pxNetworkBuffer && pxNetworkBuffer->pucEthernetBuffer) {
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xProcessReceivedTCPPacket(pxNetworkBuffer);
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}
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}
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