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

Saso Kiselkov skiselkov.ml at gmail.com
Sun Oct 2 20:32:53 UTC 2016

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    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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