/**
Detach the Pcb of the socket.
@param Sk Pointer to the socket of this TCP instance.
**/
VOID
Tcp4DetachPcb (
IN SOCKET *Sk
)
{
TCP4_PROTO_DATA *ProtoData;
TCP_CB *Tcb;
ProtoData = (TCP4_PROTO_DATA *) Sk->ProtoReserved;
Tcb = ProtoData->TcpPcb;
ASSERT (Tcb != NULL);
Tcp4FlushPcb (Tcb);
//
// Close the IP protocol.
//
gBS->CloseProtocol (
Tcb->IpInfo->ChildHandle,
&gEfiIp4ProtocolGuid,
ProtoData->TcpService->IpIo->Image,
Sk->SockHandle
);
IpIoRemoveIp (ProtoData->TcpService->IpIo, Tcb->IpInfo);
FreePool (Tcb);
ProtoData->TcpPcb = NULL;
}
/**
Attach a Pcb to the socket.
@param Sk Pointer to the socket of this TCP instance.
@retval EFI_SUCCESS The operation is completed successfully.
@retval EFI_OUT_OF_RESOURCES Failed due to resource limit.
**/
EFI_STATUS
Tcp4AttachPcb (
IN SOCKET *Sk
)
{
TCP_CB *Tcb;
TCP4_PROTO_DATA *ProtoData;
IP_IO *IpIo;
EFI_STATUS Status;
VOID *Ip;
Tcb = AllocateZeroPool (sizeof (TCP_CB));
if (Tcb == NULL) {
DEBUG ((EFI_D_ERROR, "Tcp4ConfigurePcb: failed to allocate a TCB\n"));
return EFI_OUT_OF_RESOURCES;
}
ProtoData = (TCP4_PROTO_DATA *) Sk->ProtoReserved;
IpIo = ProtoData->TcpService->IpIo;
//
// Create an IpInfo for this Tcb.
//
Tcb->IpInfo = IpIoAddIp (IpIo);
if (Tcb->IpInfo == NULL) {
FreePool (Tcb);
return EFI_OUT_OF_RESOURCES;
}
//
// Open the new created IP instance BY_CHILD.
//
Status = gBS->OpenProtocol (
Tcb->IpInfo->ChildHandle,
&gEfiIp4ProtocolGuid,
&Ip,
IpIo->Image,
Sk->SockHandle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
if (EFI_ERROR (Status)) {
IpIoRemoveIp (IpIo, Tcb->IpInfo);
return Status;
}
InitializeListHead (&Tcb->List);
InitializeListHead (&Tcb->SndQue);
InitializeListHead (&Tcb->RcvQue);
Tcb->State = TCP_CLOSED;
Tcb->Sk = Sk;
ProtoData->TcpPcb = Tcb;
return EFI_SUCCESS;
}
/**
Detach the Pcb of the socket.
@param Sk Pointer to the socket of this TCP instance.
**/
VOID
Tcp4DetachPcb (
IN SOCKET *Sk
)
{
TCP4_PROTO_DATA *ProtoData;
TCP_CB *Tcb;
ProtoData = (TCP4_PROTO_DATA *) Sk->ProtoReserved;
Tcb = ProtoData->TcpPcb;
ASSERT (Tcb != NULL);
Tcp4FlushPcb (Tcb);
IpIoRemoveIp (ProtoData->TcpService->IpIo, Tcb->IpInfo);
FreePool (Tcb);
ProtoData->TcpPcb = NULL;
}
/**
Detach the Pcb of the socket.
@param[in, out] Sk Pointer to the socket of this TCP instance.
**/
VOID
TcpDetachPcb (
IN OUT SOCKET *Sk
)
{
TCP_PROTO_DATA *ProtoData;
TCP_CB *Tcb;
EFI_GUID *IpProtocolGuid;
if (Sk->IpVersion == IP_VERSION_4) {
IpProtocolGuid = &gEfiIp4ProtocolGuid;
} else {
IpProtocolGuid = &gEfiIp6ProtocolGuid;
}
ProtoData = (TCP_PROTO_DATA *) Sk->ProtoReserved;
Tcb = ProtoData->TcpPcb;
ASSERT (Tcb != NULL);
TcpFlushPcb (Tcb);
//
// Close the IP protocol.
//
gBS->CloseProtocol (
Tcb->IpInfo->ChildHandle,
IpProtocolGuid,
ProtoData->TcpService->IpIo->Image,
Sk->SockHandle
);
IpIoRemoveIp (ProtoData->TcpService->IpIo, Tcb->IpInfo);
FreePool (Tcb);
ProtoData->TcpPcb = NULL;
}
