RE: [lwip-users] Problem with long term running of lwIP.

[Pettinato, Jim]

Well... I finally got it to happen on my development system, by putting
it on the corporate LAN and letting it get bombarded by all those stupid
broadcast messages. 

The state of the driver was that the ring buffer tail pointer ended up
with a NULL pbuf pointer, so it was stalled. And my pbuf resources were
exhausted before the head pointer wrote all the way around the ring
again, so it stalled when the pbufs ran out. So... turned out to be my
driver, looks like in my case. Just needed to add some protection to
avoid overrunning the ring buffer (I'm not sure it was purely an
overrun; it may have been an unprotected area in the buffer read routine
that needed protection from interrupts as well.)

Gonna let it run over the weekend with the fixes and we'll see how it
looks on Monday.

-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of Taranowski, Thomas (SWCOE)
Sent: Friday, February 29, 2008 5:22 PM
To: Mailing list for lwIP users
Subject: RE: [lwip-users] Problem with long term running of lwIP.

I'm testing with a pro100.  We're gathering some data right now, so
hopefully we'll some something interesting :)

> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden
On
> Behalf Of Kieran Mansley
> Sent: Friday, February 29, 2008 1:02 AM
> To: Mailing list for lwIP users
> Subject: RE: [lwip-users] Problem with long term running of lwIP.
> 
> On Wed, 2008-02-27 at 19:37 -0500, Taranowski, Thomas (SWCOE) wrote:
> > Thanks for the replies.  I've added in some statistics collection
code,
> > and am working with my customer to see if we can figure out the
problem.
> > I'll post any answers I find.
> 
> That so many people are seeing this problem is worrying.  Can we try
and
> establish if there's anything (port, driver, hardware) in common
between
> those who have this issue?
> 
> Kieran
> 
> 
> 
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