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From: Stefan Bethke <stb@lassitu.de>
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Date: Sat, 31 Dec 2011 13:36:48 +0100
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To: freebsd-mips@freebsd.org
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Cc: Aleksandr Rybalko <ray@ddteam.net>
Subject: Re: arge problem on MR3420
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Am 30.12.2011 um 23:49 schrieb Stefan Bethke:

> OK, trying to pull in everyone.  There seems to be a problem with =
if_arge on certain chips/platforms.  I've encountered it on TL-MR3420 =
and WRT-160NL.  I'm currently working off Adrians gitorious repo.

The problem is limited to BOOTP; if I mount a USB stick as root, I can =
bring up arge1 without issue.

On the AR7241, arge0 is connected to a phy and the blue WAN port, arge1 =
is connected to the built-in switch.  The port speeds are fixed (1000 =
for the switch, 100 for the phy).

With BOOTP enabled, I'm getting an interrupt storm on intr 3.  I've =
enabled debugging for arge, and it seems there is a TX underrun that is =
not being cleared in that case.  I'm not fully understanding the code, =
so I'm not sure why the TX underrun is not being cleared, or keeps =
reoccurring.


Stefan

--=20
Stefan Bethke <stb@lassitu.de>   Fon +49 151 14070811