Re: Mystery packet killing tg3

[Stephen Hemminger <shemminger@xxxxxxxx>]

On Tue, 3 May 2005 15:39:54 -0700
"David S. Miller" <davem@xxxxxxxxxxxxx> wrote:

> On Tue, 3 May 2005 15:45:00 -0700
> Stephen Hemminger <shemminger@xxxxxxxx> wrote:
> 
> > No, I forced it to always be true and still dies (when taking network down).
> 
> You're reproducing this pretty fast.
> 
> Does the link jam up, or are you just simply downing the interface
> and the stop block messages are printed out?

Initially, it reproduced everytime link came up, we reconfigured the VLAN to
have a mirror port into a laptop to try and capture what was happening, but when
we did that the bootup problem went away. It was in the tg3_reset_hw
during initial dev_open.

Today it only triggers when
I force it by doing something does a dev_close (like ifconfig or rmmod).
Since the message is the same, I assume it is the same or similar problem.

> If it jams up, what kind of traffic are you using to trigger this
> problem?

No traffic is present when the close occurs. But some DMA could be stuck
(forever) in flight at that point.