diff options
Diffstat (limited to 'FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket')
2 files changed, 93 insertions, 0 deletions
diff --git a/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/Makefile.json b/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/Makefile.json new file mode 100644 index 000000000..901a72729 --- /dev/null +++ b/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/Makefile.json @@ -0,0 +1,31 @@ +{ + "ENTRY": "ProcessReceivedTCPPacket", + "CBMCFLAGS": + [ + "--unwind 1", + "--unwindset prvTCPSendRepeated.0:13", + "--nondet-static" + ], + "OBJS": + [ + "$(ENTRY)_harness.goto", + "$(FREERTOS)/../FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_TCP_IP.goto" + ], + "INSTFLAGS": + [ + "--remove-function-body prvSingleStepTCPHeaderOptions", + "--remove-function-body prvCheckOptions", + "--remove-function-body prvTCPPrepareSend", + "--remove-function-body prvTCPReturnPacket", + "--remove-function-body prvTCPHandleState" + ], + "DEF": + [ + "FREERTOS_TCP_ENABLE_VERIFICATION" + ], + "INC": + [ + "$(FREERTOS)/tools/cbmc/include" + ] +} + diff --git a/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/ProcessReceivedTCPPacket_harness.c b/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/ProcessReceivedTCPPacket_harness.c new file mode 100644 index 000000000..bf84ecf05 --- /dev/null +++ b/FreeRTOS-Plus/Test/CBMC/proofs/parsing/ProcessReceivedTCPPacket/ProcessReceivedTCPPacket_harness.c @@ -0,0 +1,62 @@ +/* FreeRTOS includes. */ +#include "FreeRTOS.h" +#include "queue.h" + +/* FreeRTOS+TCP includes. */ +#include "FreeRTOS_IP.h" +#include "FreeRTOS_IP_Private.h" +#include "FreeRTOS_TCP_IP.h" +#include "FreeRTOS_Stream_Buffer.h" + +/* This proof assumes FreeRTOS_socket, pxTCPSocketLookup and +pxGetNetworkBufferWithDescriptor are implemented correctly. + +It also assumes prvSingleStepTCPHeaderOptions, prvCheckOptions, prvTCPPrepareSend, +prvTCPHandleState and prvTCPReturnPacket are correct. These functions are +proved to be correct separately. */ + +/* Implementation of safe malloc */ +void *safeMalloc(size_t xWantedSize ){ + if(xWantedSize == 0){ + return NULL; + } + uint8_t byte; + return byte ? malloc(xWantedSize) : NULL; +} + +/* Abstraction of FreeRTOS_socket */ +Socket_t FreeRTOS_socket( BaseType_t xDomain, BaseType_t xType, BaseType_t xProtocol) { + return safeMalloc(sizeof(FreeRTOS_Socket_t)); +} + +/* Abstraction of pxTCPSocketLookup */ +FreeRTOS_Socket_t *pxTCPSocketLookup(uint32_t ulLocalIP, UBaseType_t uxLocalPort, uint32_t ulRemoteIP, UBaseType_t uxRemotePort) { + FreeRTOS_Socket_t * xRetSocket = safeMalloc(sizeof(FreeRTOS_Socket_t)); + if (xRetSocket) { + xRetSocket->u.xTCP.txStream = safeMalloc(sizeof(StreamBuffer_t)); + xRetSocket->u.xTCP.pxPeerSocket = safeMalloc(sizeof(StreamBuffer_t)); + } + return xRetSocket; +} + +/* Abstraction of pxGetNetworkBufferWithDescriptor */ +NetworkBufferDescriptor_t *pxGetNetworkBufferWithDescriptor( size_t xRequestedSizeBytes, TickType_t xBlockTimeTicks ){ + NetworkBufferDescriptor_t *pxNetworkBuffer = safeMalloc(sizeof(NetworkBufferDescriptor_t)); + if(pxNetworkBuffer) { + pxNetworkBuffer->pucEthernetBuffer = safeMalloc(xRequestedSizeBytes); + __CPROVER_assume(pxNetworkBuffer->xDataLength == ipSIZE_OF_ETH_HEADER + sizeof(int32_t)); + } + return pxNetworkBuffer; +} + +void harness() { + NetworkBufferDescriptor_t *pxNetworkBuffer = safeMalloc(sizeof(NetworkBufferDescriptor_t)); + if (pxNetworkBuffer) { + pxNetworkBuffer->pucEthernetBuffer = safeMalloc(sizeof(TCPPacket_t)); + } + if (pxNetworkBuffer && pxNetworkBuffer->pucEthernetBuffer) { + xProcessReceivedTCPPacket(pxNetworkBuffer); + + } + +} |