/*
* Copyright (C) 2010 NXP Semiconductors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* \file phFriNfc_LlcpTransport_Connectionless.c
* \brief
*
* Project: NFC-FRI
*
*/
/*include files*/
#include <phOsalNfc.h>
#include <phLibNfcStatus.h>
#include <phLibNfc.h>
#include <phNfcLlcpTypes.h>
#include <phFriNfc_LlcpTransport.h>
#include <phFriNfc_Llcp.h>
static void phFriNfc_LlcpTransport_Connectionless_SendTo_CB(void* pContext,
uint8_t socketIndex,
NFCSTATUS status);
NFCSTATUS phFriNfc_LlcpTransport_Connectionless_HandlePendingOperations(phFriNfc_LlcpTransport_Socket_t *pSocket)
{
NFCSTATUS status = NFCSTATUS_FAILED;
/* Check if something is pending and if transport layer is ready to send */
if ((pSocket->pfSocketSend_Cb != NULL) &&
(pSocket->psTransport->bSendPending == FALSE))
{
/* Fill the psLlcpHeader stuture with the DSAP,PTYPE and the SSAP */
pSocket->sLlcpHeader.dsap = pSocket->socket_dSap;
pSocket->sLlcpHeader.ptype = PHFRINFC_LLCP_PTYPE_UI;
pSocket->sLlcpHeader.ssap = pSocket->socket_sSap;
/* Send to data to the approiate socket */
status = phFriNfc_LlcpTransport_LinkSend(pSocket->psTransport,
&pSocket->sLlcpHeader,
NULL,
&pSocket->sSocketSendBuffer,
phFriNfc_LlcpTransport_Connectionless_SendTo_CB,
pSocket->index,
pSocket);
}
else
{
/* Cannot send now, retry later */
}
return status;
}
/* TODO: comment function Handle_Connectionless_IncommingFrame */
void Handle_Connectionless_IncommingFrame(phFriNfc_LlcpTransport_t *pLlcpTransport,
phNfc_sData_t *psData,
uint8_t dsap,
uint8_t ssap)
{
phFriNfc_LlcpTransport_Socket_t * pSocket = NULL;
uint8_t i = 0;
uint8_t writeIndex;
/* Look through the socket table for a match */
for(i=0;i<PHFRINFC_LLCP_NB_SOCKET_MAX;i++)
{
if(pLlcpTransport->pSocketTable[i].socket_sSap == dsap)
{
/* Socket found ! */
pSocket = &pLlcpTransport->pSocketTable[i];
/* Forward directly to application if a read is pending */
if (pSocket->bSocketRecvPending == TRUE)
{
/* Reset the RecvPending variable */
pSocket->bSocketRecvPending = FALSE;
/* Copy the received buffer into the receive buffer */
memcpy(pSocket->sSocketRecvBuffer->buffer, psData->buffer, psData->length);
/* Update the received length */
*pSocket->receivedLength = psData->length;
/* call the recv callback */
pSocket->pfSocketRecvFrom_Cb(pSocket->pRecvContext, ssap, NFCSTATUS_SUCCESS);
pSocket->pfSocketRecvFrom_Cb = NULL;
}
/* If no read is pending, try to bufferize for later reading */
else
{
if((pSocket->indexRwWrite - pSocket->indexRwRead) < pSocket->localRW)
{
writeIndex = pSocket->indexRwWrite % pSocket->localRW;
/* Save SSAP */
pSocket->sSocketRwBufferTable[writeIndex].buffer[0] = ssap;
/* Save UI frame payload */
memcpy(pSocket->sSocketRwBufferTable[writeIndex].buffer + 1,
psData->buffer,
psData->length);
pSocket->sSocketRwBufferTable[writeIndex].length = psData->length;
/* Update the RW write index */
pSocket->indexRwWrite++;
}
else
{
/* Unable to bufferize the packet, drop it */
}
}
break;
}
}
}
/* TODO: comment function phFriNfc_LlcpTransport_Connectionless_SendTo_CB */
static void phFriNfc_LlcpTransport_Connectionless_SendTo_CB(void* pContext,
uint8_t socketIndex,
NFCSTATUS status)
{
phFriNfc_LlcpTransport_Socket_t * pLlcpSocket = (phFriNfc_LlcpTransport_Socket_t*)pContext;
pphFriNfc_LlcpTransportSocketSendCb_t pfSavedCallback;
void * pSavedContext;
/* Call the send callback */
pfSavedCallback = pLlcpSocket->pfSocketSend_Cb;
if (pfSavedCallback != NULL)
{
pLlcpSocket->pfSocketSend_Cb = NULL;
pfSavedCallback(pLlcpSocket->pSendContext, status);
}
}
static void phFriNfc_LlcpTransport_Connectionless_Abort(phFriNfc_LlcpTransport_Socket_t* pLlcpSocket)
{
if (pLlcpSocket->pfSocketSend_Cb != NULL)
{
pLlcpSocket->pfSocketSend_Cb(pLlcpSocket->pSendContext, NFCSTATUS_ABORTED);
pLlcpSocket->pSendContext = NULL;
pLlcpSocket->pfSocketSend_Cb = NULL;
}
if (pLlcpSocket->pfSocketRecvFrom_Cb != NULL)
{
pLlcpSocket->pfSocketRecvFrom_Cb(pLlcpSocket->pRecvContext, 0, NFCSTATUS_ABORTED);
pLlcpSocket->pRecvContext = NULL;
pLlcpSocket->pfSocketRecvFrom_Cb = NULL;
pLlcpSocket->pfSocketRecv_Cb = NULL;
}
pLlcpSocket->pAcceptContext = NULL;
pLlcpSocket->pfSocketAccept_Cb = NULL;
pLlcpSocket->pListenContext = NULL;
pLlcpSocket->pfSocketListen_Cb = NULL;
pLlcpSocket->pConnectContext = NULL;
pLlcpSocket->pfSocketConnect_Cb = NULL;
pLlcpSocket->pDisconnectContext = NULL;
pLlcpSocket->pfSocketDisconnect_Cb = NULL;
}
/**
* \ingroup grp_fri_nfc
* \brief <b>Close a socket on a LLCP-connectionless device</b>.
*
* This function closes a LLCP socket previously created using phFriNfc_LlcpTransport_Socket.
*
* \param[in] pLlcpSocket A pointer to a phFriNfc_LlcpTransport_Socket_t.
* \retval NFCSTATUS_SUCCESS Operation successful.
* \retval NFCSTATUS_INVALID_PARAMETER One or more of the supplied parameters
* could not be properly interpreted.
* \retval NFCSTATUS_FAILED Operation failed.
*/
NFCSTATUS phFriNfc_LlcpTransport_Connectionless_Close(phFriNfc_LlcpTransport_Socket_t* pLlcpSocket)
{
/* Reset the pointer to the socket closed */
pLlcpSocket->eSocket_State = phFriNfc_LlcpTransportSocket_eSocketDefault;
pLlcpSocket->eSocket_Type = phFriNfc_LlcpTransport_eDefaultType;
pLlcpSocket->pContext = NULL;
pLlcpSocket->pSocketErrCb = NULL;
pLlcpSocket->socket_sSap = PHFRINFC_LLCP_SAP_DEFAULT;
pLlcpSocket->socket_dSap = PHFRINFC_LLCP_SAP_DEFAULT;
pLlcpSocket->bSocketRecvPending = FALSE;
pLlcpSocket->bSocketSendPending = FALSE;
pLlcpSocket->bSocketListenPending = FALSE;
pLlcpSocket->bSocketDiscPending = FALSE;
pLlcpSocket->RemoteBusyConditionInfo = FALSE;
pLlcpSocket->ReceiverBusyCondition = FALSE;
pLlcpSocket->socket_VS = 0;
pLlcpSocket->socket_VSA = 0;
pLlcpSocket->socket_VR = 0;
pLlcpSocket->socket_VRA = 0;
phFriNfc_LlcpTransport_Connectionless_Abort(pLlcpSocket);
memset(&pLlcpSocket->sSocketOption, 0x00, sizeof(phFriNfc_LlcpTransport_sSocketOptions_t));
if (pLlcpSocket->sServiceName.buffer != NULL) {
phOsalNfc_FreeMemory(pLlcpSocket->sServiceName.buffer);
}
pLlcpSocket->sServiceName.buffer = NULL;
pLlcpSocket->sServiceName.length = 0;
return NFCSTATUS_SUCCESS;
}
/**
* \ingroup grp_fri_nfc
* \brief <b>Send data on a socket to a given destination SAP</b>.
*
* This function is used to write data on a socket to a given destination SAP.
* This function can only be called on a connectionless socket.
*
*
* \param[in] pLlcpSocket A pointer to a LlcpSocket created.
* \param[in] nSap The destination SAP.
* \param[in] psBuffer The buffer containing the data to send.
* \param[in] pSend_RspCb The callback to be called when the
* operation is completed.
* \param[in] pContext Upper layer context to be returned in
* the callback.
*
* \retval NFCSTATUS_SUCCESS Operation successful.
* \retval NFCSTATUS_INVALID_PARAMETER One or more of the supplied parameters
* could not be properly interpreted.
* \retval NFCSTATUS_PENDING Reception operation is in progress,
* pSend_RspCb will be called upon completion.
* \retval NFCSTATUS_INVALID_STATE The socket is not in a valid state, or not of
* a valid type to perform the requsted operation.
* \retval NFCSTATUS_NOT_INITIALISED Indicates stack is not yet initialized.
* \retval NFCSTATUS_SHUTDOWN Shutdown in progress.
* \retval NFCSTATUS_FAILED Operation failed.
*/
NFCSTATUS phFriNfc_LlcpTransport_Connectionless_SendTo(phFriNfc_LlcpTransport_Socket_t *pLlcpSocket,
uint8_t nSap,
phNfc_sData_t* psBuffer,
pphFriNfc_LlcpTransportSocketSendCb_t pSend_RspCb,
void* pContext)
{
NFCSTATUS status = NFCSTATUS_FAILED;
/* Store send callback and context*/
pLlcpSocket->pfSocketSend_Cb = pSend_RspCb;
pLlcpSocket->pSendContext = pContext;
/* Test if a send is already pending at transport level */
if(pLlcpSocket->psTransport->bSendPending == TRUE)
{
/* Save the request so it can be handled in phFriNfc_LlcpTransport_Connectionless_HandlePendingOperations() */
pLlcpSocket->sSocketSendBuffer = *psBuffer;
pLlcpSocket->socket_dSap = nSap;
status = NFCSTATUS_PENDING;
}
else
{
/* Fill the psLlcpHeader stuture with the DSAP,PTYPE and the SSAP */
pLlcpSocket->sLlcpHeader.dsap = nSap;
pLlcpSocket->sLlcpHeader.ptype = PHFRINFC_LLCP_PTYPE_UI;
pLlcpSocket->sLlcpHeader.ssap = pLlcpSocket->socket_sSap;
/* Send to data to the approiate socket */
status = phFriNfc_LlcpTransport_LinkSend(pLlcpSocket->psTransport,
&pLlcpSocket->sLlcpHeader,
NULL,
psBuffer,
phFriNfc_LlcpTransport_Connectionless_SendTo_CB,
pLlcpSocket->index,
pLlcpSocket);
}
return status;
}
/**
* \ingroup grp_lib_nfc
* \brief <b>Read data on a socket and get the source SAP</b>.
*
* This function is the same as phLibNfc_Llcp_Recv, except that the callback includes
* the source SAP. This functions can only be called on a connectionless socket.
*
*
* \param[in] pLlcpSocket A pointer to a LlcpSocket created.
* \param[in] psBuffer The buffer receiving the data.
* \param[in] pRecv_RspCb The callback to be called when the
* operation is completed.
* \param[in] pContext Upper layer context to be returned in
* the callback.
*
* \retval NFCSTATUS_SUCCESS Operation successful.
* \retval NFCSTATUS_INVALID_PARAMETER One or more of the supplied parameters
* could not be properly interpreted.
* \retval NFCSTATUS_PENDING Reception operation is in progress,
* pRecv_RspCb will be called upon completion.
* \retval NFCSTATUS_INVALID_STATE The socket is not in a valid state, or not of
* a valid type to perform the requsted operation.
* \retval NFCSTATUS_NOT_INITIALISED Indicates stack is not yet initialized.
* \retval NFCSTATUS_SHUTDOWN Shutdown in progress.
* \retval NFCSTATUS_FAILED Operation failed.
*/
NFCSTATUS phLibNfc_LlcpTransport_Connectionless_RecvFrom(phFriNfc_LlcpTransport_Socket_t *pLlcpSocket,
phNfc_sData_t* psBuffer,
pphFriNfc_LlcpTransportSocketRecvFromCb_t pRecv_Cb,
void *pContext)
{
NFCSTATUS status = NFCSTATUS_PENDING;
uint8_t readIndex;
uint8_t ssap;
if(pLlcpSocket->bSocketRecvPending)
{
status = PHNFCSTVAL(CID_FRI_NFC_LLCP_TRANSPORT, NFCSTATUS_REJECTED);
}
else
{
/* Check if pending packets in RW */
if(pLlcpSocket->indexRwRead != pLlcpSocket->indexRwWrite)
{
readIndex = pLlcpSocket->indexRwRead % pLlcpSocket->localRW;
/* Extract ssap and buffer from RW buffer */
ssap = pLlcpSocket->sSocketRwBufferTable[readIndex].buffer[0];
memcpy(psBuffer->buffer,
pLlcpSocket->sSocketRwBufferTable[readIndex].buffer + 1,
pLlcpSocket->sSocketRwBufferTable[readIndex].length);
psBuffer->length = pLlcpSocket->sSocketRwBufferTable[readIndex].length;
/* Reset RW buffer length */
pLlcpSocket->sSocketRwBufferTable[readIndex].length = 0;
/* Update Value Rw Read Index */
pLlcpSocket->indexRwRead++;
/* call the recv callback */
pRecv_Cb(pContext, ssap, NFCSTATUS_SUCCESS);
status = NFCSTATUS_SUCCESS;
}
/* Otherwise, wait for a packet to come */
else
{
/* Store the callback and context*/
pLlcpSocket->pfSocketRecvFrom_Cb = pRecv_Cb;
pLlcpSocket->pRecvContext = pContext;
/* Store the pointer to the receive buffer */
pLlcpSocket->sSocketRecvBuffer = psBuffer;
pLlcpSocket->receivedLength = &psBuffer->length;
/* Set RecvPending to TRUE */
pLlcpSocket->bSocketRecvPending = TRUE;
}
}
return status;
}