[OmniOS-discuss] [discuss] Re: [networking] rge_intr troubles

[Saso Kiselkov]

I'm willing to test anything you suggest.

-- 
Saso

On 10/2/16 10:09 PM, Garrett D'Amore wrote:
> ah so maybe we need to change the logic so that the exhaustion of descriptors takes precedence over the rx fifo overrun.  
> 
> Sent from my iPhone
> 
>> On Oct 2, 2016, at 12:45 PM, Saso Kiselkov <skiselkov.ml at gmail.com> wrote:
>>
>> Thanks for the suggestions! Results below:
>>
>>> On 10/2/16 7:20 PM, Garrett D'Amore wrote:
>>> But as a first test, you can try calling rge_receive().  The simplest
>>> way I can see to do that is to OR in the value of RGE_NO_RXDESC_INT in
>>> the check at 1495. (Btw the ordering of the checks at 1488 and 1495 are
>>> suboptimal, as the rx interrupt should be the *hot* code path.
>>
>> Sadly, this won't help. RGE_RX_INT is already a composite of
>> RX_OK_INT | RX_ERR_INT | NO_RXDESC_INT
>>
>>> One thing you might also try doing is changing the value in rge.h for
>>> RGE_RECV_COPY_SIZE from 256 to something much larger — 8000 will be
>>> larger than the largest possible rge frame.  I have a theory that part
>>> of the problem you are encountering may be due to being out of buffers
>>> to loan up, and the screwy handling for that case.
>>
>> Tried this, but to no avail. It still goes into the sad place. Sadly,
>> this stupid box doesn't even have a serial port with which I could
>> provide you access. And I'm out of PCI-e slots to shove in an Intel NIC,
>> so the on-board Realtek POS is my last option. Well that, or using Linux
>> with Illumos as a KVM on top of it, but even saying that out loud leaves
>> a bad taste in my mouth...
>>
>> Cheers,
>> --
>> Saso
>>
> 
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