IPSTACK * IPSRefresh(IPSTACK * pIpStack, const LLADP * pLLAdp, IPSTATUS * pStatus)
{
AssignStatusSafely(pStatus, ipsSuccess);
if(pIpStack == NULL)
{
pIpStack = IPSGetIpStackFromAdaptor(pLLAdp, ippnTCP, pStatus);
}
else
{
pIpStack = IPSSwapSrcAndDest(pIpStack);
}
if(pIpStack != NULL)
{
// the payload may have a pointer in it that we are going to clear
// that pointer may or may not be from the heap; but if it is not from
// the heap, the pointer will be outside of the heap ranage and be ignored
// by the heap manager with no damage.
if(pIpStack->fFreePayloadToAdp)
{
RRHPFree(pIpStack->pLLAdp->pNwAdp->hAdpHeap, pIpStack->pPayload);
}
pIpStack->cbPayload = 0;
pIpStack->pPayload = NULL;
switch(pIpStack->protocol)
{
case ippnUDP:
pIpStack->pUDPHdr->cbHdrData = sizeof(UDPHDR);
pIpStack->pUDPHdr->checksum = 0;
break;
case ippnTCP:
pIpStack->pTCPHdr->u16Flags = 0;
pIpStack->pTCPHdr->dataOffset = sizeof(TCPHDR)/sizeof(uint32_t);
pIpStack->pTCPHdr->urgentPtr = 0;
pIpStack->pTCPHdr->checksum = 0;
break;
default:
break;
}
}
return(pIpStack);
}
bool ICMPv4Send(const LLADP * pLLAdp, IPv4 * pIPv4Dest, void * pICMPDgm, uint32_t cbICMPDgm, IPSTATUS * pStatus)
{
IPSTACK * pIpStack;
if( (pIpStack = IPSGetIpStackFromAdaptor(pLLAdp, ippnICMP, pStatus)) == NULL)
{
return(false);
}
pIpStack->cbPayload = cbICMPDgm;
pIpStack->pPayload = pICMPDgm;
pIpStack->pICMPHdr->checksum = 0;
pIpStack->pIPv4Hdr->cbTotal += cbICMPDgm;
pIpStack->pIPv4Hdr->ipDest.u32 = pIPv4Dest->u32;
return(ILSend(pIpStack, pStatus));
}
bool UDPSend(HSOCKET hSocket, const uint8_t * pbDatagram, uint16_t cbDatagram, IPSTATUS * pStatus)
{
UDPSOCKET * pSocket = (UDPSOCKET *) hSocket;
IPSTACK * pIpStack = NULL;
if(pSocket->s.portRemote == portListen || pSocket->s.portRemote == portInvalid)
{
AssignStatusSafely(pStatus, ipsSocketNotResolved);
return(false);
}
else if((pIpStack = IPSGetIpStackFromAdaptor(pSocket->s.pLLAdp, ippnUDP, pStatus)) == NULL)
{
return(false);
}
else if(UDPRawSend(pSocket->s.pLLAdp, pIpStack, (void *) &pSocket->s.ipRemote, pSocket->s.portRemote, pSocket->s.portLocal, pbDatagram, cbDatagram, true, pStatus))
{
return(true);
}
else
{
IPSRelease(pIpStack);
return(false);
}
}
