[lwip-users] loading the stack ...

[Teratux]

Hi ... I'm using a port of the lwip stack on the FreeRtos operating 
system.  I'm trying to create a gateway between an ethernet interface 
and a serial port on a ARM based board.   Here's a snippet of what I'm 
trying to use based on the examples.  I ommited a few portions and 
focused on the main issue.

struct netconn *pNewConnection;
   struct netconn *pListener;
   pListener = netconn_new( NETCONN_TCP );
   netconn_bind(pListener, NULL, RC_PORT );
   netconn_listen( pListener );
   int n = 0;
pNewConnection = netconn_accept(pListener);

while ( ( in = netconn_recv(pNewConnection) ) != NULL )
{

      if ( in != NULL )
     {
            netbuf_data(in, (void*)&pBuff, &len);

            i = 0;
            while( i < len )
            {
              xQueueSend( handleUpr, (void*)&pBuff[i++], 10 );
              vParTestToggleLED(3);
            }
            netbuf_delete(in);
     }
}

This code starts a netconn_recv loop receiving data from a 
pNewConnection and sending the data on to a queue provided in the 
FreeRtos to another task.  On the other end, I start a client with a 
loop sending data over ethernet.  My idea is to try to stress the 
application.

The result of this is that, as time passes, the operating system starts 
to block in the netconn_recv line waiting for data while I'm overloading 
on the other end.  I checked and the problem doesn't reside on the 
ethernet end, the problem is only solved when I restart my application 
and thus the lwip stack for another run, until some time passes ( maybe 
1 or 2 minutes ) before it starts to block and unblock, each block 
period increasing as time passes.

Can anyone help ??