em driver - issue #2

Sat Feb 5 15:00:00 PST 2005

On Sat, Feb 05, 2005 at 05:48:38PM -0500, EM1897 at xxxxxxx wrote:
> 
> I set the m_getcl() in em_get_buf to MB_WAIT and the symptoms are
> interesting. After about 5 seconds, the mbuf exhausted message
> appears again. But, it doesn't lock up. For a short time the NIC is 
> issuing flow controls (as the transmit stream is being held up to a 
> lower than optimal volume), after awhile the box is able to handle 
> the full stream normally, showing ~144000 received packets in the 
> ICMP unreachable message, as is expected.

em(4) plays some dirty games with the mbuf clusters here. Give me a bit
to look further into it.

Joerg