Re: BNX driver problem when mbuf clusters run out

[Matt Thomas <matt%3am-software.com@localhost>]

On Apr 19, 2012, at 5:08 PM, Beverly Schwartz wrote:

> 
> On Apr 19, 2012, at 8:02 PM, Matt Thomas wrote:
>> 
>> Unfortunately, that can lead to receiver livelock (spend all the time 
>> servicing interrupts without making progress).  The best thing to do is pass 
>> the packet up the stack and just another packet to the hardware.  Instead 
>> use bnx_tick to add mbufs if needed.  This gives the stack a chance to run 
>> and hopefully free some mbufs.
> 
> I tried that.  And at first, things move along.  But eventually, bnx_rx_intr 
> never gets called, because 
> if (sblk->status_rx_quick_consumer_index0 != sc->nw_rx_cons)
> in bnx_intr always fails.

For now, can you try the patch at

http://www.netbsd.org/~matt/if_bnx-diff.txt

It's kind of ugly but it is a minimal change.