Waiting for mbufs

[Chris Johns]

gregory.menke at gsfc.nasa.gov wrote:

> Sure, but I think I have plenty free here- and I'm only pinging one of
> the interfaces once a second or so.  The same load (greater for that
> matter, simulataneous pings on both interfaces) works fine if each
> unit has its own receive task.

I assume these are 64bytes pings. This should not be a problem. It is doing 
things like 64K pings that clusters get used quickly.

Is your transmitter working ok and not consuming packets ?

Another thing to looks for is missed interrupts or receive events. Things look 
like they are working, but it is a following packet that flushes through an 
earlier one.

I had a bug in the Coldfire 5272 driver I am working on where I had freed an 
invalid mbuf pointer (it was 0). This resulted in these sorts of errors as the 
mbuf pool was suddenly empty but the counts said otherwise.

-- 
  Chris Johns, cjohns at cybertec.com.au